Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Written by Doug Lea and Martin Buchholz with assistance from |
| 3 | * members of JCP JSR-166 Expert Group and released to the public |
| 4 | * domain, as explained at |
| 5 | * http://creativecommons.org/publicdomain/zero/1.0/ |
| 6 | */ |
| 7 | |
| 8 | package jsr166; |
| 9 | |
| 10 | import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 11 | import static java.util.concurrent.TimeUnit.SECONDS; |
| 12 | import static java.util.concurrent.CompletableFuture.completedFuture; |
| 13 | import static java.util.concurrent.CompletableFuture.failedFuture; |
| 14 | |
| 15 | import java.lang.reflect.Method; |
| 16 | import java.lang.reflect.Modifier; |
| 17 | |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 18 | import java.util.stream.Collectors; |
| 19 | import java.util.stream.Stream; |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 20 | |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.Arrays; |
| 23 | import java.util.List; |
| 24 | import java.util.Objects; |
| 25 | import java.util.Set; |
| 26 | import java.util.concurrent.Callable; |
| 27 | import java.util.concurrent.CancellationException; |
| 28 | import java.util.concurrent.CompletableFuture; |
| 29 | import java.util.concurrent.CompletionException; |
| 30 | import java.util.concurrent.CompletionStage; |
| 31 | import java.util.concurrent.ExecutionException; |
| 32 | import java.util.concurrent.Executor; |
| 33 | import java.util.concurrent.ForkJoinPool; |
| 34 | import java.util.concurrent.ForkJoinTask; |
| 35 | import java.util.concurrent.TimeoutException; |
| 36 | import java.util.concurrent.TimeUnit; |
| 37 | import java.util.concurrent.atomic.AtomicInteger; |
| 38 | import java.util.concurrent.atomic.AtomicReference; |
| 39 | import java.util.function.BiConsumer; |
| 40 | import java.util.function.BiFunction; |
| 41 | import java.util.function.Consumer; |
| 42 | import java.util.function.Function; |
| 43 | import java.util.function.Predicate; |
| 44 | import java.util.function.Supplier; |
| 45 | |
| 46 | import junit.framework.AssertionFailedError; |
| 47 | import junit.framework.Test; |
| 48 | import junit.framework.TestSuite; |
| 49 | |
| 50 | public class CompletableFutureTest extends JSR166TestCase { |
| 51 | |
| 52 | // android-note: Removed because the CTS runner does a bad job of |
| 53 | // retrying tests that have suite() declarations. |
| 54 | // |
| 55 | // public static void main(String[] args) { |
| 56 | // main(suite(), args); |
| 57 | // } |
| 58 | // public static Test suite() { |
| 59 | // return new TestSuite(CompletableFutureTest.class); |
| 60 | // } |
| 61 | |
| 62 | static class CFException extends RuntimeException {} |
| 63 | |
| 64 | void checkIncomplete(CompletableFuture<?> f) { |
| 65 | assertFalse(f.isDone()); |
| 66 | assertFalse(f.isCancelled()); |
| 67 | assertTrue(f.toString().contains("Not completed")); |
| 68 | try { |
| 69 | assertNull(f.getNow(null)); |
| 70 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 71 | try { |
| 72 | f.get(0L, SECONDS); |
| 73 | shouldThrow(); |
| 74 | } |
| 75 | catch (TimeoutException success) {} |
| 76 | catch (Throwable fail) { threadUnexpectedException(fail); } |
| 77 | } |
| 78 | |
| 79 | <T> void checkCompletedNormally(CompletableFuture<T> f, T value) { |
| 80 | checkTimedGet(f, value); |
| 81 | |
| 82 | try { |
| 83 | assertEquals(value, f.join()); |
| 84 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 85 | try { |
| 86 | assertEquals(value, f.getNow(null)); |
| 87 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 88 | try { |
| 89 | assertEquals(value, f.get()); |
| 90 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 91 | assertTrue(f.isDone()); |
| 92 | assertFalse(f.isCancelled()); |
| 93 | assertFalse(f.isCompletedExceptionally()); |
| 94 | assertTrue(f.toString().contains("[Completed normally]")); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Returns the "raw" internal exceptional completion of f, |
| 99 | * without any additional wrapping with CompletionException. |
| 100 | */ |
| 101 | <U> Throwable exceptionalCompletion(CompletableFuture<U> f) { |
| 102 | // handle (and whenComplete) can distinguish between "direct" |
| 103 | // and "wrapped" exceptional completion |
| 104 | return f.handle((U u, Throwable t) -> t).join(); |
| 105 | } |
| 106 | |
| 107 | void checkCompletedExceptionally(CompletableFuture<?> f, |
| 108 | boolean wrapped, |
| 109 | Consumer<Throwable> checker) { |
| 110 | Throwable cause = exceptionalCompletion(f); |
| 111 | if (wrapped) { |
| 112 | assertTrue(cause instanceof CompletionException); |
| 113 | cause = cause.getCause(); |
| 114 | } |
| 115 | checker.accept(cause); |
| 116 | |
| 117 | long startTime = System.nanoTime(); |
| 118 | try { |
| 119 | f.get(LONG_DELAY_MS, MILLISECONDS); |
| 120 | shouldThrow(); |
| 121 | } catch (ExecutionException success) { |
| 122 | assertSame(cause, success.getCause()); |
| 123 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 124 | assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
| 125 | |
| 126 | try { |
| 127 | f.join(); |
| 128 | shouldThrow(); |
| 129 | } catch (CompletionException success) { |
| 130 | assertSame(cause, success.getCause()); |
| 131 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 132 | |
| 133 | try { |
| 134 | f.getNow(null); |
| 135 | shouldThrow(); |
| 136 | } catch (CompletionException success) { |
| 137 | assertSame(cause, success.getCause()); |
| 138 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 139 | |
| 140 | try { |
| 141 | f.get(); |
| 142 | shouldThrow(); |
| 143 | } catch (ExecutionException success) { |
| 144 | assertSame(cause, success.getCause()); |
| 145 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 146 | |
| 147 | assertFalse(f.isCancelled()); |
| 148 | assertTrue(f.isDone()); |
| 149 | assertTrue(f.isCompletedExceptionally()); |
Sorin Basca | da643e0 | 2021-10-18 10:15:31 +0000 | [diff] [blame] | 150 | assertTrue(f.toString().contains("[Completed exceptionally:")); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | void checkCompletedWithWrappedCFException(CompletableFuture<?> f) { |
| 154 | checkCompletedExceptionally(f, true, |
| 155 | (t) -> assertTrue(t instanceof CFException)); |
| 156 | } |
| 157 | |
| 158 | void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) { |
| 159 | checkCompletedExceptionally(f, true, |
| 160 | (t) -> assertTrue(t instanceof CancellationException)); |
| 161 | } |
| 162 | |
| 163 | void checkCompletedWithTimeoutException(CompletableFuture<?> f) { |
| 164 | checkCompletedExceptionally(f, false, |
| 165 | (t) -> assertTrue(t instanceof TimeoutException)); |
| 166 | } |
| 167 | |
| 168 | void checkCompletedWithWrappedException(CompletableFuture<?> f, |
| 169 | Throwable ex) { |
| 170 | checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex)); |
| 171 | } |
| 172 | |
| 173 | void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) { |
| 174 | checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex)); |
| 175 | } |
| 176 | |
| 177 | void checkCancelled(CompletableFuture<?> f) { |
| 178 | long startTime = System.nanoTime(); |
| 179 | try { |
| 180 | f.get(LONG_DELAY_MS, MILLISECONDS); |
| 181 | shouldThrow(); |
| 182 | } catch (CancellationException success) { |
| 183 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 184 | assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
| 185 | |
| 186 | try { |
| 187 | f.join(); |
| 188 | shouldThrow(); |
| 189 | } catch (CancellationException success) {} |
| 190 | try { |
| 191 | f.getNow(null); |
| 192 | shouldThrow(); |
| 193 | } catch (CancellationException success) {} |
| 194 | try { |
| 195 | f.get(); |
| 196 | shouldThrow(); |
| 197 | } catch (CancellationException success) { |
| 198 | } catch (Throwable fail) { threadUnexpectedException(fail); } |
| 199 | |
| 200 | assertTrue(exceptionalCompletion(f) instanceof CancellationException); |
| 201 | |
| 202 | assertTrue(f.isDone()); |
| 203 | assertTrue(f.isCompletedExceptionally()); |
| 204 | assertTrue(f.isCancelled()); |
Sorin Basca | da643e0 | 2021-10-18 10:15:31 +0000 | [diff] [blame] | 205 | assertTrue(f.toString().contains("[Completed exceptionally:")); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | /** |
| 209 | * A newly constructed CompletableFuture is incomplete, as indicated |
| 210 | * by methods isDone, isCancelled, and getNow |
| 211 | */ |
| 212 | public void testConstructor() { |
| 213 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 214 | checkIncomplete(f); |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * complete completes normally, as indicated by methods isDone, |
| 219 | * isCancelled, join, get, and getNow |
| 220 | */ |
| 221 | public void testComplete() { |
| 222 | for (Integer v1 : new Integer[] { 1, null }) |
| 223 | { |
| 224 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 225 | checkIncomplete(f); |
| 226 | assertTrue(f.complete(v1)); |
| 227 | assertFalse(f.complete(v1)); |
| 228 | checkCompletedNormally(f, v1); |
| 229 | }} |
| 230 | |
| 231 | /** |
| 232 | * completeExceptionally completes exceptionally, as indicated by |
| 233 | * methods isDone, isCancelled, join, get, and getNow |
| 234 | */ |
| 235 | public void testCompleteExceptionally() { |
| 236 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 237 | CFException ex = new CFException(); |
| 238 | checkIncomplete(f); |
| 239 | f.completeExceptionally(ex); |
| 240 | checkCompletedExceptionally(f, ex); |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * cancel completes exceptionally and reports cancelled, as indicated by |
| 245 | * methods isDone, isCancelled, join, get, and getNow |
| 246 | */ |
| 247 | public void testCancel() { |
| 248 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 249 | { |
| 250 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 251 | checkIncomplete(f); |
| 252 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 253 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 254 | assertTrue(f.cancel(!mayInterruptIfRunning)); |
| 255 | checkCancelled(f); |
| 256 | }} |
| 257 | |
| 258 | /** |
| 259 | * obtrudeValue forces completion with given value |
| 260 | */ |
| 261 | public void testObtrudeValue() { |
| 262 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 263 | checkIncomplete(f); |
| 264 | assertTrue(f.complete(one)); |
| 265 | checkCompletedNormally(f, one); |
| 266 | f.obtrudeValue(three); |
| 267 | checkCompletedNormally(f, three); |
| 268 | f.obtrudeValue(two); |
| 269 | checkCompletedNormally(f, two); |
| 270 | f = new CompletableFuture<>(); |
| 271 | f.obtrudeValue(three); |
| 272 | checkCompletedNormally(f, three); |
| 273 | f.obtrudeValue(null); |
| 274 | checkCompletedNormally(f, null); |
| 275 | f = new CompletableFuture<>(); |
| 276 | f.completeExceptionally(new CFException()); |
| 277 | f.obtrudeValue(four); |
| 278 | checkCompletedNormally(f, four); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * obtrudeException forces completion with given exception |
| 283 | */ |
| 284 | public void testObtrudeException() { |
| 285 | for (Integer v1 : new Integer[] { 1, null }) |
| 286 | { |
| 287 | CFException ex; |
| 288 | CompletableFuture<Integer> f; |
| 289 | |
| 290 | f = new CompletableFuture<>(); |
| 291 | assertTrue(f.complete(v1)); |
| 292 | for (int i = 0; i < 2; i++) { |
| 293 | f.obtrudeException(ex = new CFException()); |
| 294 | checkCompletedExceptionally(f, ex); |
| 295 | } |
| 296 | |
| 297 | f = new CompletableFuture<>(); |
| 298 | for (int i = 0; i < 2; i++) { |
| 299 | f.obtrudeException(ex = new CFException()); |
| 300 | checkCompletedExceptionally(f, ex); |
| 301 | } |
| 302 | |
| 303 | f = new CompletableFuture<>(); |
| 304 | f.completeExceptionally(ex = new CFException()); |
| 305 | f.obtrudeValue(v1); |
| 306 | checkCompletedNormally(f, v1); |
| 307 | f.obtrudeException(ex = new CFException()); |
| 308 | checkCompletedExceptionally(f, ex); |
| 309 | f.completeExceptionally(new CFException()); |
| 310 | checkCompletedExceptionally(f, ex); |
| 311 | assertFalse(f.complete(v1)); |
| 312 | checkCompletedExceptionally(f, ex); |
| 313 | }} |
| 314 | |
| 315 | /** |
| 316 | * getNumberOfDependents returns number of dependent tasks |
| 317 | */ |
| 318 | public void testGetNumberOfDependents() { |
| 319 | for (ExecutionMode m : ExecutionMode.values()) |
| 320 | for (Integer v1 : new Integer[] { 1, null }) |
| 321 | { |
| 322 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 323 | assertEquals(0, f.getNumberOfDependents()); |
| 324 | final CompletableFuture<Void> g = m.thenRun(f, new Noop(m)); |
| 325 | assertEquals(1, f.getNumberOfDependents()); |
| 326 | assertEquals(0, g.getNumberOfDependents()); |
| 327 | final CompletableFuture<Void> h = m.thenRun(f, new Noop(m)); |
| 328 | assertEquals(2, f.getNumberOfDependents()); |
| 329 | assertEquals(0, h.getNumberOfDependents()); |
| 330 | assertTrue(f.complete(v1)); |
| 331 | checkCompletedNormally(g, null); |
| 332 | checkCompletedNormally(h, null); |
| 333 | assertEquals(0, f.getNumberOfDependents()); |
| 334 | assertEquals(0, g.getNumberOfDependents()); |
| 335 | assertEquals(0, h.getNumberOfDependents()); |
| 336 | }} |
| 337 | |
| 338 | /** |
| 339 | * toString indicates current completion state |
| 340 | */ |
| 341 | public void testToString() { |
| 342 | CompletableFuture<String> f; |
| 343 | |
| 344 | f = new CompletableFuture<String>(); |
| 345 | assertTrue(f.toString().contains("[Not completed]")); |
| 346 | |
| 347 | assertTrue(f.complete("foo")); |
| 348 | assertTrue(f.toString().contains("[Completed normally]")); |
| 349 | |
| 350 | f = new CompletableFuture<String>(); |
| 351 | assertTrue(f.completeExceptionally(new IndexOutOfBoundsException())); |
Sorin Basca | da643e0 | 2021-10-18 10:15:31 +0000 | [diff] [blame] | 352 | assertTrue(f.toString().contains("[Completed exceptionally:")); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 353 | |
| 354 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
| 355 | f = new CompletableFuture<String>(); |
| 356 | assertTrue(f.cancel(mayInterruptIfRunning)); |
Sorin Basca | da643e0 | 2021-10-18 10:15:31 +0000 | [diff] [blame] | 357 | assertTrue(f.toString().contains("[Completed exceptionally:")); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 358 | } |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * completedFuture returns a completed CompletableFuture with given value |
| 363 | */ |
| 364 | public void testCompletedFuture() { |
| 365 | CompletableFuture<String> f = CompletableFuture.completedFuture("test"); |
| 366 | checkCompletedNormally(f, "test"); |
| 367 | } |
| 368 | |
| 369 | abstract class CheckedAction { |
| 370 | int invocationCount = 0; |
| 371 | final ExecutionMode m; |
| 372 | CheckedAction(ExecutionMode m) { this.m = m; } |
| 373 | void invoked() { |
| 374 | m.checkExecutionMode(); |
| 375 | assertEquals(0, invocationCount++); |
| 376 | } |
| 377 | void assertNotInvoked() { assertEquals(0, invocationCount); } |
| 378 | void assertInvoked() { assertEquals(1, invocationCount); } |
| 379 | } |
| 380 | |
| 381 | abstract class CheckedIntegerAction extends CheckedAction { |
| 382 | Integer value; |
| 383 | CheckedIntegerAction(ExecutionMode m) { super(m); } |
| 384 | void assertValue(Integer expected) { |
| 385 | assertInvoked(); |
| 386 | assertEquals(expected, value); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | class IntegerSupplier extends CheckedAction |
| 391 | implements Supplier<Integer> |
| 392 | { |
| 393 | final Integer value; |
| 394 | IntegerSupplier(ExecutionMode m, Integer value) { |
| 395 | super(m); |
| 396 | this.value = value; |
| 397 | } |
| 398 | public Integer get() { |
| 399 | invoked(); |
| 400 | return value; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | // A function that handles and produces null values as well. |
| 405 | static Integer inc(Integer x) { |
| 406 | return (x == null) ? null : x + 1; |
| 407 | } |
| 408 | |
| 409 | class NoopConsumer extends CheckedIntegerAction |
| 410 | implements Consumer<Integer> |
| 411 | { |
| 412 | NoopConsumer(ExecutionMode m) { super(m); } |
| 413 | public void accept(Integer x) { |
| 414 | invoked(); |
| 415 | value = x; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | class IncFunction extends CheckedIntegerAction |
| 420 | implements Function<Integer,Integer> |
| 421 | { |
| 422 | IncFunction(ExecutionMode m) { super(m); } |
| 423 | public Integer apply(Integer x) { |
| 424 | invoked(); |
| 425 | return value = inc(x); |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | // Choose non-commutative actions for better coverage |
| 430 | // A non-commutative function that handles and produces null values as well. |
| 431 | static Integer subtract(Integer x, Integer y) { |
| 432 | return (x == null && y == null) ? null : |
| 433 | ((x == null) ? 42 : x.intValue()) |
| 434 | - ((y == null) ? 99 : y.intValue()); |
| 435 | } |
| 436 | |
| 437 | class SubtractAction extends CheckedIntegerAction |
| 438 | implements BiConsumer<Integer, Integer> |
| 439 | { |
| 440 | SubtractAction(ExecutionMode m) { super(m); } |
| 441 | public void accept(Integer x, Integer y) { |
| 442 | invoked(); |
| 443 | value = subtract(x, y); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | class SubtractFunction extends CheckedIntegerAction |
| 448 | implements BiFunction<Integer, Integer, Integer> |
| 449 | { |
| 450 | SubtractFunction(ExecutionMode m) { super(m); } |
| 451 | public Integer apply(Integer x, Integer y) { |
| 452 | invoked(); |
| 453 | return value = subtract(x, y); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | class Noop extends CheckedAction implements Runnable { |
| 458 | Noop(ExecutionMode m) { super(m); } |
| 459 | public void run() { |
| 460 | invoked(); |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | class FailingSupplier extends CheckedAction |
| 465 | implements Supplier<Integer> |
| 466 | { |
| 467 | FailingSupplier(ExecutionMode m) { super(m); } |
| 468 | public Integer get() { |
| 469 | invoked(); |
| 470 | throw new CFException(); |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | class FailingConsumer extends CheckedIntegerAction |
| 475 | implements Consumer<Integer> |
| 476 | { |
| 477 | FailingConsumer(ExecutionMode m) { super(m); } |
| 478 | public void accept(Integer x) { |
| 479 | invoked(); |
| 480 | value = x; |
| 481 | throw new CFException(); |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | class FailingBiConsumer extends CheckedIntegerAction |
| 486 | implements BiConsumer<Integer, Integer> |
| 487 | { |
| 488 | FailingBiConsumer(ExecutionMode m) { super(m); } |
| 489 | public void accept(Integer x, Integer y) { |
| 490 | invoked(); |
| 491 | value = subtract(x, y); |
| 492 | throw new CFException(); |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | class FailingFunction extends CheckedIntegerAction |
| 497 | implements Function<Integer, Integer> |
| 498 | { |
| 499 | FailingFunction(ExecutionMode m) { super(m); } |
| 500 | public Integer apply(Integer x) { |
| 501 | invoked(); |
| 502 | value = x; |
| 503 | throw new CFException(); |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | class FailingBiFunction extends CheckedIntegerAction |
| 508 | implements BiFunction<Integer, Integer, Integer> |
| 509 | { |
| 510 | FailingBiFunction(ExecutionMode m) { super(m); } |
| 511 | public Integer apply(Integer x, Integer y) { |
| 512 | invoked(); |
| 513 | value = subtract(x, y); |
| 514 | throw new CFException(); |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | class FailingRunnable extends CheckedAction implements Runnable { |
| 519 | FailingRunnable(ExecutionMode m) { super(m); } |
| 520 | public void run() { |
| 521 | invoked(); |
| 522 | throw new CFException(); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | class CompletableFutureInc extends CheckedIntegerAction |
| 527 | implements Function<Integer, CompletableFuture<Integer>> |
| 528 | { |
| 529 | CompletableFutureInc(ExecutionMode m) { super(m); } |
| 530 | public CompletableFuture<Integer> apply(Integer x) { |
| 531 | invoked(); |
| 532 | value = x; |
| 533 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 534 | assertTrue(f.complete(inc(x))); |
| 535 | return f; |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | class FailingCompletableFutureFunction extends CheckedIntegerAction |
| 540 | implements Function<Integer, CompletableFuture<Integer>> |
| 541 | { |
| 542 | FailingCompletableFutureFunction(ExecutionMode m) { super(m); } |
| 543 | public CompletableFuture<Integer> apply(Integer x) { |
| 544 | invoked(); |
| 545 | value = x; |
| 546 | throw new CFException(); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | // Used for explicit executor tests |
| 551 | static final class ThreadExecutor implements Executor { |
| 552 | final AtomicInteger count = new AtomicInteger(0); |
| 553 | static final ThreadGroup tg = new ThreadGroup("ThreadExecutor"); |
| 554 | static boolean startedCurrentThread() { |
| 555 | return Thread.currentThread().getThreadGroup() == tg; |
| 556 | } |
| 557 | |
| 558 | public void execute(Runnable r) { |
| 559 | count.getAndIncrement(); |
| 560 | new Thread(tg, r).start(); |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | static final boolean defaultExecutorIsCommonPool |
| 565 | = ForkJoinPool.getCommonPoolParallelism() > 1; |
| 566 | |
| 567 | /** |
| 568 | * Permits the testing of parallel code for the 3 different |
| 569 | * execution modes without copy/pasting all the test methods. |
| 570 | */ |
| 571 | enum ExecutionMode { |
| 572 | SYNC { |
| 573 | public void checkExecutionMode() { |
| 574 | assertFalse(ThreadExecutor.startedCurrentThread()); |
| 575 | assertNull(ForkJoinTask.getPool()); |
| 576 | } |
| 577 | public CompletableFuture<Void> runAsync(Runnable a) { |
| 578 | throw new UnsupportedOperationException(); |
| 579 | } |
| 580 | public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) { |
| 581 | throw new UnsupportedOperationException(); |
| 582 | } |
| 583 | public <T> CompletableFuture<Void> thenRun |
| 584 | (CompletableFuture<T> f, Runnable a) { |
| 585 | return f.thenRun(a); |
| 586 | } |
| 587 | public <T> CompletableFuture<Void> thenAccept |
| 588 | (CompletableFuture<T> f, Consumer<? super T> a) { |
| 589 | return f.thenAccept(a); |
| 590 | } |
| 591 | public <T,U> CompletableFuture<U> thenApply |
| 592 | (CompletableFuture<T> f, Function<? super T,U> a) { |
| 593 | return f.thenApply(a); |
| 594 | } |
| 595 | public <T,U> CompletableFuture<U> thenCompose |
| 596 | (CompletableFuture<T> f, |
| 597 | Function<? super T,? extends CompletionStage<U>> a) { |
| 598 | return f.thenCompose(a); |
| 599 | } |
| 600 | public <T,U> CompletableFuture<U> handle |
| 601 | (CompletableFuture<T> f, |
| 602 | BiFunction<? super T,Throwable,? extends U> a) { |
| 603 | return f.handle(a); |
| 604 | } |
| 605 | public <T> CompletableFuture<T> whenComplete |
| 606 | (CompletableFuture<T> f, |
| 607 | BiConsumer<? super T,? super Throwable> a) { |
| 608 | return f.whenComplete(a); |
| 609 | } |
| 610 | public <T,U> CompletableFuture<Void> runAfterBoth |
| 611 | (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) { |
| 612 | return f.runAfterBoth(g, a); |
| 613 | } |
| 614 | public <T,U> CompletableFuture<Void> thenAcceptBoth |
| 615 | (CompletableFuture<T> f, |
| 616 | CompletionStage<? extends U> g, |
| 617 | BiConsumer<? super T,? super U> a) { |
| 618 | return f.thenAcceptBoth(g, a); |
| 619 | } |
| 620 | public <T,U,V> CompletableFuture<V> thenCombine |
| 621 | (CompletableFuture<T> f, |
| 622 | CompletionStage<? extends U> g, |
| 623 | BiFunction<? super T,? super U,? extends V> a) { |
| 624 | return f.thenCombine(g, a); |
| 625 | } |
| 626 | public <T> CompletableFuture<Void> runAfterEither |
| 627 | (CompletableFuture<T> f, |
| 628 | CompletionStage<?> g, |
| 629 | java.lang.Runnable a) { |
| 630 | return f.runAfterEither(g, a); |
| 631 | } |
| 632 | public <T> CompletableFuture<Void> acceptEither |
| 633 | (CompletableFuture<T> f, |
| 634 | CompletionStage<? extends T> g, |
| 635 | Consumer<? super T> a) { |
| 636 | return f.acceptEither(g, a); |
| 637 | } |
| 638 | public <T,U> CompletableFuture<U> applyToEither |
| 639 | (CompletableFuture<T> f, |
| 640 | CompletionStage<? extends T> g, |
| 641 | Function<? super T,U> a) { |
| 642 | return f.applyToEither(g, a); |
| 643 | } |
| 644 | }, |
| 645 | |
| 646 | ASYNC { |
| 647 | public void checkExecutionMode() { |
| 648 | assertEquals(defaultExecutorIsCommonPool, |
| 649 | (ForkJoinPool.commonPool() == ForkJoinTask.getPool())); |
| 650 | } |
| 651 | public CompletableFuture<Void> runAsync(Runnable a) { |
| 652 | return CompletableFuture.runAsync(a); |
| 653 | } |
| 654 | public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) { |
| 655 | return CompletableFuture.supplyAsync(a); |
| 656 | } |
| 657 | public <T> CompletableFuture<Void> thenRun |
| 658 | (CompletableFuture<T> f, Runnable a) { |
| 659 | return f.thenRunAsync(a); |
| 660 | } |
| 661 | public <T> CompletableFuture<Void> thenAccept |
| 662 | (CompletableFuture<T> f, Consumer<? super T> a) { |
| 663 | return f.thenAcceptAsync(a); |
| 664 | } |
| 665 | public <T,U> CompletableFuture<U> thenApply |
| 666 | (CompletableFuture<T> f, Function<? super T,U> a) { |
| 667 | return f.thenApplyAsync(a); |
| 668 | } |
| 669 | public <T,U> CompletableFuture<U> thenCompose |
| 670 | (CompletableFuture<T> f, |
| 671 | Function<? super T,? extends CompletionStage<U>> a) { |
| 672 | return f.thenComposeAsync(a); |
| 673 | } |
| 674 | public <T,U> CompletableFuture<U> handle |
| 675 | (CompletableFuture<T> f, |
| 676 | BiFunction<? super T,Throwable,? extends U> a) { |
| 677 | return f.handleAsync(a); |
| 678 | } |
| 679 | public <T> CompletableFuture<T> whenComplete |
| 680 | (CompletableFuture<T> f, |
| 681 | BiConsumer<? super T,? super Throwable> a) { |
| 682 | return f.whenCompleteAsync(a); |
| 683 | } |
| 684 | public <T,U> CompletableFuture<Void> runAfterBoth |
| 685 | (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) { |
| 686 | return f.runAfterBothAsync(g, a); |
| 687 | } |
| 688 | public <T,U> CompletableFuture<Void> thenAcceptBoth |
| 689 | (CompletableFuture<T> f, |
| 690 | CompletionStage<? extends U> g, |
| 691 | BiConsumer<? super T,? super U> a) { |
| 692 | return f.thenAcceptBothAsync(g, a); |
| 693 | } |
| 694 | public <T,U,V> CompletableFuture<V> thenCombine |
| 695 | (CompletableFuture<T> f, |
| 696 | CompletionStage<? extends U> g, |
| 697 | BiFunction<? super T,? super U,? extends V> a) { |
| 698 | return f.thenCombineAsync(g, a); |
| 699 | } |
| 700 | public <T> CompletableFuture<Void> runAfterEither |
| 701 | (CompletableFuture<T> f, |
| 702 | CompletionStage<?> g, |
| 703 | java.lang.Runnable a) { |
| 704 | return f.runAfterEitherAsync(g, a); |
| 705 | } |
| 706 | public <T> CompletableFuture<Void> acceptEither |
| 707 | (CompletableFuture<T> f, |
| 708 | CompletionStage<? extends T> g, |
| 709 | Consumer<? super T> a) { |
| 710 | return f.acceptEitherAsync(g, a); |
| 711 | } |
| 712 | public <T,U> CompletableFuture<U> applyToEither |
| 713 | (CompletableFuture<T> f, |
| 714 | CompletionStage<? extends T> g, |
| 715 | Function<? super T,U> a) { |
| 716 | return f.applyToEitherAsync(g, a); |
| 717 | } |
| 718 | }, |
| 719 | |
| 720 | EXECUTOR { |
| 721 | public void checkExecutionMode() { |
| 722 | assertTrue(ThreadExecutor.startedCurrentThread()); |
| 723 | } |
| 724 | public CompletableFuture<Void> runAsync(Runnable a) { |
| 725 | return CompletableFuture.runAsync(a, new ThreadExecutor()); |
| 726 | } |
| 727 | public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) { |
| 728 | return CompletableFuture.supplyAsync(a, new ThreadExecutor()); |
| 729 | } |
| 730 | public <T> CompletableFuture<Void> thenRun |
| 731 | (CompletableFuture<T> f, Runnable a) { |
| 732 | return f.thenRunAsync(a, new ThreadExecutor()); |
| 733 | } |
| 734 | public <T> CompletableFuture<Void> thenAccept |
| 735 | (CompletableFuture<T> f, Consumer<? super T> a) { |
| 736 | return f.thenAcceptAsync(a, new ThreadExecutor()); |
| 737 | } |
| 738 | public <T,U> CompletableFuture<U> thenApply |
| 739 | (CompletableFuture<T> f, Function<? super T,U> a) { |
| 740 | return f.thenApplyAsync(a, new ThreadExecutor()); |
| 741 | } |
| 742 | public <T,U> CompletableFuture<U> thenCompose |
| 743 | (CompletableFuture<T> f, |
| 744 | Function<? super T,? extends CompletionStage<U>> a) { |
| 745 | return f.thenComposeAsync(a, new ThreadExecutor()); |
| 746 | } |
| 747 | public <T,U> CompletableFuture<U> handle |
| 748 | (CompletableFuture<T> f, |
| 749 | BiFunction<? super T,Throwable,? extends U> a) { |
| 750 | return f.handleAsync(a, new ThreadExecutor()); |
| 751 | } |
| 752 | public <T> CompletableFuture<T> whenComplete |
| 753 | (CompletableFuture<T> f, |
| 754 | BiConsumer<? super T,? super Throwable> a) { |
| 755 | return f.whenCompleteAsync(a, new ThreadExecutor()); |
| 756 | } |
| 757 | public <T,U> CompletableFuture<Void> runAfterBoth |
| 758 | (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) { |
| 759 | return f.runAfterBothAsync(g, a, new ThreadExecutor()); |
| 760 | } |
| 761 | public <T,U> CompletableFuture<Void> thenAcceptBoth |
| 762 | (CompletableFuture<T> f, |
| 763 | CompletionStage<? extends U> g, |
| 764 | BiConsumer<? super T,? super U> a) { |
| 765 | return f.thenAcceptBothAsync(g, a, new ThreadExecutor()); |
| 766 | } |
| 767 | public <T,U,V> CompletableFuture<V> thenCombine |
| 768 | (CompletableFuture<T> f, |
| 769 | CompletionStage<? extends U> g, |
| 770 | BiFunction<? super T,? super U,? extends V> a) { |
| 771 | return f.thenCombineAsync(g, a, new ThreadExecutor()); |
| 772 | } |
| 773 | public <T> CompletableFuture<Void> runAfterEither |
| 774 | (CompletableFuture<T> f, |
| 775 | CompletionStage<?> g, |
| 776 | java.lang.Runnable a) { |
| 777 | return f.runAfterEitherAsync(g, a, new ThreadExecutor()); |
| 778 | } |
| 779 | public <T> CompletableFuture<Void> acceptEither |
| 780 | (CompletableFuture<T> f, |
| 781 | CompletionStage<? extends T> g, |
| 782 | Consumer<? super T> a) { |
| 783 | return f.acceptEitherAsync(g, a, new ThreadExecutor()); |
| 784 | } |
| 785 | public <T,U> CompletableFuture<U> applyToEither |
| 786 | (CompletableFuture<T> f, |
| 787 | CompletionStage<? extends T> g, |
| 788 | Function<? super T,U> a) { |
| 789 | return f.applyToEitherAsync(g, a, new ThreadExecutor()); |
| 790 | } |
| 791 | }; |
| 792 | |
| 793 | public abstract void checkExecutionMode(); |
| 794 | public abstract CompletableFuture<Void> runAsync(Runnable a); |
| 795 | public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a); |
| 796 | public abstract <T> CompletableFuture<Void> thenRun |
| 797 | (CompletableFuture<T> f, Runnable a); |
| 798 | public abstract <T> CompletableFuture<Void> thenAccept |
| 799 | (CompletableFuture<T> f, Consumer<? super T> a); |
| 800 | public abstract <T,U> CompletableFuture<U> thenApply |
| 801 | (CompletableFuture<T> f, Function<? super T,U> a); |
| 802 | public abstract <T,U> CompletableFuture<U> thenCompose |
| 803 | (CompletableFuture<T> f, |
| 804 | Function<? super T,? extends CompletionStage<U>> a); |
| 805 | public abstract <T,U> CompletableFuture<U> handle |
| 806 | (CompletableFuture<T> f, |
| 807 | BiFunction<? super T,Throwable,? extends U> a); |
| 808 | public abstract <T> CompletableFuture<T> whenComplete |
| 809 | (CompletableFuture<T> f, |
| 810 | BiConsumer<? super T,? super Throwable> a); |
| 811 | public abstract <T,U> CompletableFuture<Void> runAfterBoth |
| 812 | (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a); |
| 813 | public abstract <T,U> CompletableFuture<Void> thenAcceptBoth |
| 814 | (CompletableFuture<T> f, |
| 815 | CompletionStage<? extends U> g, |
| 816 | BiConsumer<? super T,? super U> a); |
| 817 | public abstract <T,U,V> CompletableFuture<V> thenCombine |
| 818 | (CompletableFuture<T> f, |
| 819 | CompletionStage<? extends U> g, |
| 820 | BiFunction<? super T,? super U,? extends V> a); |
| 821 | public abstract <T> CompletableFuture<Void> runAfterEither |
| 822 | (CompletableFuture<T> f, |
| 823 | CompletionStage<?> g, |
| 824 | java.lang.Runnable a); |
| 825 | public abstract <T> CompletableFuture<Void> acceptEither |
| 826 | (CompletableFuture<T> f, |
| 827 | CompletionStage<? extends T> g, |
| 828 | Consumer<? super T> a); |
| 829 | public abstract <T,U> CompletableFuture<U> applyToEither |
| 830 | (CompletableFuture<T> f, |
| 831 | CompletionStage<? extends T> g, |
| 832 | Function<? super T,U> a); |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * exceptionally action is not invoked when source completes |
| 837 | * normally, and source result is propagated |
| 838 | */ |
| 839 | public void testExceptionally_normalCompletion() { |
| 840 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 841 | for (Integer v1 : new Integer[] { 1, null }) |
| 842 | { |
| 843 | final AtomicInteger a = new AtomicInteger(0); |
| 844 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 845 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 846 | final CompletableFuture<Integer> g = f.exceptionally |
| 847 | ((Throwable t) -> { |
| 848 | a.getAndIncrement(); |
| 849 | threadFail("should not be called"); |
| 850 | return null; // unreached |
| 851 | }); |
| 852 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 853 | |
| 854 | checkCompletedNormally(g, v1); |
| 855 | checkCompletedNormally(f, v1); |
| 856 | assertEquals(0, a.get()); |
| 857 | }} |
| 858 | |
| 859 | /** |
| 860 | * exceptionally action completes with function value on source |
| 861 | * exception |
| 862 | */ |
| 863 | public void testExceptionally_exceptionalCompletion() { |
| 864 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 865 | for (Integer v1 : new Integer[] { 1, null }) |
| 866 | { |
| 867 | final AtomicInteger a = new AtomicInteger(0); |
| 868 | final CFException ex = new CFException(); |
| 869 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 870 | if (!createIncomplete) f.completeExceptionally(ex); |
| 871 | final CompletableFuture<Integer> g = f.exceptionally |
| 872 | ((Throwable t) -> { |
| 873 | ExecutionMode.SYNC.checkExecutionMode(); |
| 874 | threadAssertSame(t, ex); |
| 875 | a.getAndIncrement(); |
| 876 | return v1; |
| 877 | }); |
| 878 | if (createIncomplete) f.completeExceptionally(ex); |
| 879 | |
| 880 | checkCompletedNormally(g, v1); |
| 881 | assertEquals(1, a.get()); |
| 882 | }} |
| 883 | |
| 884 | /** |
| 885 | * If an "exceptionally action" throws an exception, it completes |
| 886 | * exceptionally with that exception |
| 887 | */ |
| 888 | public void testExceptionally_exceptionalCompletionActionFailed() { |
| 889 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 890 | { |
| 891 | final AtomicInteger a = new AtomicInteger(0); |
| 892 | final CFException ex1 = new CFException(); |
| 893 | final CFException ex2 = new CFException(); |
| 894 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 895 | if (!createIncomplete) f.completeExceptionally(ex1); |
| 896 | final CompletableFuture<Integer> g = f.exceptionally |
| 897 | ((Throwable t) -> { |
| 898 | ExecutionMode.SYNC.checkExecutionMode(); |
| 899 | threadAssertSame(t, ex1); |
| 900 | a.getAndIncrement(); |
| 901 | throw ex2; |
| 902 | }); |
| 903 | if (createIncomplete) f.completeExceptionally(ex1); |
| 904 | |
| 905 | checkCompletedWithWrappedException(g, ex2); |
| 906 | checkCompletedExceptionally(f, ex1); |
| 907 | assertEquals(1, a.get()); |
| 908 | }} |
| 909 | |
| 910 | /** |
| 911 | * whenComplete action executes on normal completion, propagating |
| 912 | * source result. |
| 913 | */ |
| 914 | public void testWhenComplete_normalCompletion() { |
| 915 | for (ExecutionMode m : ExecutionMode.values()) |
| 916 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 917 | for (Integer v1 : new Integer[] { 1, null }) |
| 918 | { |
| 919 | final AtomicInteger a = new AtomicInteger(0); |
| 920 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 921 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 922 | final CompletableFuture<Integer> g = m.whenComplete |
| 923 | (f, |
| 924 | (Integer result, Throwable t) -> { |
| 925 | m.checkExecutionMode(); |
| 926 | threadAssertSame(result, v1); |
| 927 | threadAssertNull(t); |
| 928 | a.getAndIncrement(); |
| 929 | }); |
| 930 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 931 | |
| 932 | checkCompletedNormally(g, v1); |
| 933 | checkCompletedNormally(f, v1); |
| 934 | assertEquals(1, a.get()); |
| 935 | }} |
| 936 | |
| 937 | /** |
| 938 | * whenComplete action executes on exceptional completion, propagating |
| 939 | * source result. |
| 940 | */ |
| 941 | public void testWhenComplete_exceptionalCompletion() { |
| 942 | for (ExecutionMode m : ExecutionMode.values()) |
| 943 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 944 | { |
| 945 | final AtomicInteger a = new AtomicInteger(0); |
| 946 | final CFException ex = new CFException(); |
| 947 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 948 | if (!createIncomplete) f.completeExceptionally(ex); |
| 949 | final CompletableFuture<Integer> g = m.whenComplete |
| 950 | (f, |
| 951 | (Integer result, Throwable t) -> { |
| 952 | m.checkExecutionMode(); |
| 953 | threadAssertNull(result); |
| 954 | threadAssertSame(t, ex); |
| 955 | a.getAndIncrement(); |
| 956 | }); |
| 957 | if (createIncomplete) f.completeExceptionally(ex); |
| 958 | |
| 959 | checkCompletedWithWrappedException(g, ex); |
| 960 | checkCompletedExceptionally(f, ex); |
| 961 | assertEquals(1, a.get()); |
| 962 | }} |
| 963 | |
| 964 | /** |
| 965 | * whenComplete action executes on cancelled source, propagating |
| 966 | * CancellationException. |
| 967 | */ |
| 968 | public void testWhenComplete_sourceCancelled() { |
| 969 | for (ExecutionMode m : ExecutionMode.values()) |
| 970 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 971 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 972 | { |
| 973 | final AtomicInteger a = new AtomicInteger(0); |
| 974 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 975 | if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
| 976 | final CompletableFuture<Integer> g = m.whenComplete |
| 977 | (f, |
| 978 | (Integer result, Throwable t) -> { |
| 979 | m.checkExecutionMode(); |
| 980 | threadAssertNull(result); |
| 981 | threadAssertTrue(t instanceof CancellationException); |
| 982 | a.getAndIncrement(); |
| 983 | }); |
| 984 | if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
| 985 | |
| 986 | checkCompletedWithWrappedCancellationException(g); |
| 987 | checkCancelled(f); |
| 988 | assertEquals(1, a.get()); |
| 989 | }} |
| 990 | |
| 991 | /** |
| 992 | * If a whenComplete action throws an exception when triggered by |
| 993 | * a normal completion, it completes exceptionally |
| 994 | */ |
| 995 | public void testWhenComplete_sourceCompletedNormallyActionFailed() { |
| 996 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 997 | for (ExecutionMode m : ExecutionMode.values()) |
| 998 | for (Integer v1 : new Integer[] { 1, null }) |
| 999 | { |
| 1000 | final AtomicInteger a = new AtomicInteger(0); |
| 1001 | final CFException ex = new CFException(); |
| 1002 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1003 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 1004 | final CompletableFuture<Integer> g = m.whenComplete |
| 1005 | (f, |
| 1006 | (Integer result, Throwable t) -> { |
| 1007 | m.checkExecutionMode(); |
| 1008 | threadAssertSame(result, v1); |
| 1009 | threadAssertNull(t); |
| 1010 | a.getAndIncrement(); |
| 1011 | throw ex; |
| 1012 | }); |
| 1013 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 1014 | |
| 1015 | checkCompletedWithWrappedException(g, ex); |
| 1016 | checkCompletedNormally(f, v1); |
| 1017 | assertEquals(1, a.get()); |
| 1018 | }} |
| 1019 | |
| 1020 | /** |
| 1021 | * If a whenComplete action throws an exception when triggered by |
| 1022 | * a source completion that also throws an exception, the source |
| 1023 | * exception takes precedence (unlike handle) |
| 1024 | */ |
| 1025 | public void testWhenComplete_sourceFailedActionFailed() { |
| 1026 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1027 | for (ExecutionMode m : ExecutionMode.values()) |
| 1028 | { |
| 1029 | final AtomicInteger a = new AtomicInteger(0); |
| 1030 | final CFException ex1 = new CFException(); |
| 1031 | final CFException ex2 = new CFException(); |
| 1032 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1033 | |
| 1034 | if (!createIncomplete) f.completeExceptionally(ex1); |
| 1035 | final CompletableFuture<Integer> g = m.whenComplete |
| 1036 | (f, |
| 1037 | (Integer result, Throwable t) -> { |
| 1038 | m.checkExecutionMode(); |
| 1039 | threadAssertSame(t, ex1); |
| 1040 | threadAssertNull(result); |
| 1041 | a.getAndIncrement(); |
| 1042 | throw ex2; |
| 1043 | }); |
| 1044 | if (createIncomplete) f.completeExceptionally(ex1); |
| 1045 | |
| 1046 | checkCompletedWithWrappedException(g, ex1); |
| 1047 | checkCompletedExceptionally(f, ex1); |
| 1048 | if (testImplementationDetails) { |
| 1049 | assertEquals(1, ex1.getSuppressed().length); |
| 1050 | assertSame(ex2, ex1.getSuppressed()[0]); |
| 1051 | } |
| 1052 | assertEquals(1, a.get()); |
| 1053 | }} |
| 1054 | |
| 1055 | /** |
| 1056 | * handle action completes normally with function value on normal |
| 1057 | * completion of source |
| 1058 | */ |
| 1059 | public void testHandle_normalCompletion() { |
| 1060 | for (ExecutionMode m : ExecutionMode.values()) |
| 1061 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1062 | for (Integer v1 : new Integer[] { 1, null }) |
| 1063 | { |
| 1064 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1065 | final AtomicInteger a = new AtomicInteger(0); |
| 1066 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 1067 | final CompletableFuture<Integer> g = m.handle |
| 1068 | (f, |
| 1069 | (Integer result, Throwable t) -> { |
| 1070 | m.checkExecutionMode(); |
| 1071 | threadAssertSame(result, v1); |
| 1072 | threadAssertNull(t); |
| 1073 | a.getAndIncrement(); |
| 1074 | return inc(v1); |
| 1075 | }); |
| 1076 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 1077 | |
| 1078 | checkCompletedNormally(g, inc(v1)); |
| 1079 | checkCompletedNormally(f, v1); |
| 1080 | assertEquals(1, a.get()); |
| 1081 | }} |
| 1082 | |
| 1083 | /** |
| 1084 | * handle action completes normally with function value on |
| 1085 | * exceptional completion of source |
| 1086 | */ |
| 1087 | public void testHandle_exceptionalCompletion() { |
| 1088 | for (ExecutionMode m : ExecutionMode.values()) |
| 1089 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1090 | for (Integer v1 : new Integer[] { 1, null }) |
| 1091 | { |
| 1092 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1093 | final AtomicInteger a = new AtomicInteger(0); |
| 1094 | final CFException ex = new CFException(); |
| 1095 | if (!createIncomplete) f.completeExceptionally(ex); |
| 1096 | final CompletableFuture<Integer> g = m.handle |
| 1097 | (f, |
| 1098 | (Integer result, Throwable t) -> { |
| 1099 | m.checkExecutionMode(); |
| 1100 | threadAssertNull(result); |
| 1101 | threadAssertSame(t, ex); |
| 1102 | a.getAndIncrement(); |
| 1103 | return v1; |
| 1104 | }); |
| 1105 | if (createIncomplete) f.completeExceptionally(ex); |
| 1106 | |
| 1107 | checkCompletedNormally(g, v1); |
| 1108 | checkCompletedExceptionally(f, ex); |
| 1109 | assertEquals(1, a.get()); |
| 1110 | }} |
| 1111 | |
| 1112 | /** |
| 1113 | * handle action completes normally with function value on |
| 1114 | * cancelled source |
| 1115 | */ |
| 1116 | public void testHandle_sourceCancelled() { |
| 1117 | for (ExecutionMode m : ExecutionMode.values()) |
| 1118 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1119 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1120 | for (Integer v1 : new Integer[] { 1, null }) |
| 1121 | { |
| 1122 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1123 | final AtomicInteger a = new AtomicInteger(0); |
| 1124 | if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
| 1125 | final CompletableFuture<Integer> g = m.handle |
| 1126 | (f, |
| 1127 | (Integer result, Throwable t) -> { |
| 1128 | m.checkExecutionMode(); |
| 1129 | threadAssertNull(result); |
| 1130 | threadAssertTrue(t instanceof CancellationException); |
| 1131 | a.getAndIncrement(); |
| 1132 | return v1; |
| 1133 | }); |
| 1134 | if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
| 1135 | |
| 1136 | checkCompletedNormally(g, v1); |
| 1137 | checkCancelled(f); |
| 1138 | assertEquals(1, a.get()); |
| 1139 | }} |
| 1140 | |
| 1141 | /** |
| 1142 | * If a "handle action" throws an exception when triggered by |
| 1143 | * a normal completion, it completes exceptionally |
| 1144 | */ |
| 1145 | public void testHandle_sourceCompletedNormallyActionFailed() { |
| 1146 | for (ExecutionMode m : ExecutionMode.values()) |
| 1147 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1148 | for (Integer v1 : new Integer[] { 1, null }) |
| 1149 | { |
| 1150 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1151 | final AtomicInteger a = new AtomicInteger(0); |
| 1152 | final CFException ex = new CFException(); |
| 1153 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 1154 | final CompletableFuture<Integer> g = m.handle |
| 1155 | (f, |
| 1156 | (Integer result, Throwable t) -> { |
| 1157 | m.checkExecutionMode(); |
| 1158 | threadAssertSame(result, v1); |
| 1159 | threadAssertNull(t); |
| 1160 | a.getAndIncrement(); |
| 1161 | throw ex; |
| 1162 | }); |
| 1163 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 1164 | |
| 1165 | checkCompletedWithWrappedException(g, ex); |
| 1166 | checkCompletedNormally(f, v1); |
| 1167 | assertEquals(1, a.get()); |
| 1168 | }} |
| 1169 | |
| 1170 | /** |
| 1171 | * If a "handle action" throws an exception when triggered by |
| 1172 | * a source completion that also throws an exception, the action |
| 1173 | * exception takes precedence (unlike whenComplete) |
| 1174 | */ |
| 1175 | public void testHandle_sourceFailedActionFailed() { |
| 1176 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 1177 | for (ExecutionMode m : ExecutionMode.values()) |
| 1178 | { |
| 1179 | final AtomicInteger a = new AtomicInteger(0); |
| 1180 | final CFException ex1 = new CFException(); |
| 1181 | final CFException ex2 = new CFException(); |
| 1182 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1183 | |
| 1184 | if (!createIncomplete) f.completeExceptionally(ex1); |
| 1185 | final CompletableFuture<Integer> g = m.handle |
| 1186 | (f, |
| 1187 | (Integer result, Throwable t) -> { |
| 1188 | m.checkExecutionMode(); |
| 1189 | threadAssertNull(result); |
| 1190 | threadAssertSame(ex1, t); |
| 1191 | a.getAndIncrement(); |
| 1192 | throw ex2; |
| 1193 | }); |
| 1194 | if (createIncomplete) f.completeExceptionally(ex1); |
| 1195 | |
| 1196 | checkCompletedWithWrappedException(g, ex2); |
| 1197 | checkCompletedExceptionally(f, ex1); |
| 1198 | assertEquals(1, a.get()); |
| 1199 | }} |
| 1200 | |
| 1201 | /** |
| 1202 | * runAsync completes after running Runnable |
| 1203 | */ |
| 1204 | public void testRunAsync_normalCompletion() { |
| 1205 | ExecutionMode[] executionModes = { |
| 1206 | ExecutionMode.ASYNC, |
| 1207 | ExecutionMode.EXECUTOR, |
| 1208 | }; |
| 1209 | for (ExecutionMode m : executionModes) |
| 1210 | { |
| 1211 | final Noop r = new Noop(m); |
| 1212 | final CompletableFuture<Void> f = m.runAsync(r); |
| 1213 | assertNull(f.join()); |
| 1214 | checkCompletedNormally(f, null); |
| 1215 | r.assertInvoked(); |
| 1216 | }} |
| 1217 | |
| 1218 | /** |
| 1219 | * failing runAsync completes exceptionally after running Runnable |
| 1220 | */ |
| 1221 | public void testRunAsync_exceptionalCompletion() { |
| 1222 | ExecutionMode[] executionModes = { |
| 1223 | ExecutionMode.ASYNC, |
| 1224 | ExecutionMode.EXECUTOR, |
| 1225 | }; |
| 1226 | for (ExecutionMode m : executionModes) |
| 1227 | { |
| 1228 | final FailingRunnable r = new FailingRunnable(m); |
| 1229 | final CompletableFuture<Void> f = m.runAsync(r); |
| 1230 | checkCompletedWithWrappedCFException(f); |
| 1231 | r.assertInvoked(); |
| 1232 | }} |
| 1233 | |
| 1234 | /** |
| 1235 | * supplyAsync completes with result of supplier |
| 1236 | */ |
| 1237 | public void testSupplyAsync_normalCompletion() { |
| 1238 | ExecutionMode[] executionModes = { |
| 1239 | ExecutionMode.ASYNC, |
| 1240 | ExecutionMode.EXECUTOR, |
| 1241 | }; |
| 1242 | for (ExecutionMode m : executionModes) |
| 1243 | for (Integer v1 : new Integer[] { 1, null }) |
| 1244 | { |
| 1245 | final IntegerSupplier r = new IntegerSupplier(m, v1); |
| 1246 | final CompletableFuture<Integer> f = m.supplyAsync(r); |
| 1247 | assertSame(v1, f.join()); |
| 1248 | checkCompletedNormally(f, v1); |
| 1249 | r.assertInvoked(); |
| 1250 | }} |
| 1251 | |
| 1252 | /** |
| 1253 | * Failing supplyAsync completes exceptionally |
| 1254 | */ |
| 1255 | public void testSupplyAsync_exceptionalCompletion() { |
| 1256 | ExecutionMode[] executionModes = { |
| 1257 | ExecutionMode.ASYNC, |
| 1258 | ExecutionMode.EXECUTOR, |
| 1259 | }; |
| 1260 | for (ExecutionMode m : executionModes) |
| 1261 | { |
| 1262 | FailingSupplier r = new FailingSupplier(m); |
| 1263 | CompletableFuture<Integer> f = m.supplyAsync(r); |
| 1264 | checkCompletedWithWrappedCFException(f); |
| 1265 | r.assertInvoked(); |
| 1266 | }} |
| 1267 | |
| 1268 | // seq completion methods |
| 1269 | |
| 1270 | /** |
| 1271 | * thenRun result completes normally after normal completion of source |
| 1272 | */ |
| 1273 | public void testThenRun_normalCompletion() { |
| 1274 | for (ExecutionMode m : ExecutionMode.values()) |
| 1275 | for (Integer v1 : new Integer[] { 1, null }) |
| 1276 | { |
| 1277 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1278 | final Noop[] rs = new Noop[6]; |
| 1279 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 1280 | |
| 1281 | final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]); |
| 1282 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]); |
| 1283 | final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]); |
| 1284 | checkIncomplete(h0); |
| 1285 | checkIncomplete(h1); |
| 1286 | checkIncomplete(h2); |
| 1287 | assertTrue(f.complete(v1)); |
| 1288 | final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]); |
| 1289 | final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]); |
| 1290 | final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]); |
| 1291 | |
| 1292 | checkCompletedNormally(h0, null); |
| 1293 | checkCompletedNormally(h1, null); |
| 1294 | checkCompletedNormally(h2, null); |
| 1295 | checkCompletedNormally(h3, null); |
| 1296 | checkCompletedNormally(h4, null); |
| 1297 | checkCompletedNormally(h5, null); |
| 1298 | checkCompletedNormally(f, v1); |
| 1299 | for (Noop r : rs) r.assertInvoked(); |
| 1300 | }} |
| 1301 | |
| 1302 | /** |
| 1303 | * thenRun result completes exceptionally after exceptional |
| 1304 | * completion of source |
| 1305 | */ |
| 1306 | public void testThenRun_exceptionalCompletion() { |
| 1307 | for (ExecutionMode m : ExecutionMode.values()) |
| 1308 | { |
| 1309 | final CFException ex = new CFException(); |
| 1310 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1311 | final Noop[] rs = new Noop[6]; |
| 1312 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 1313 | |
| 1314 | final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]); |
| 1315 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]); |
| 1316 | final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]); |
| 1317 | checkIncomplete(h0); |
| 1318 | checkIncomplete(h1); |
| 1319 | checkIncomplete(h2); |
| 1320 | assertTrue(f.completeExceptionally(ex)); |
| 1321 | final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]); |
| 1322 | final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]); |
| 1323 | final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]); |
| 1324 | |
| 1325 | checkCompletedWithWrappedException(h0, ex); |
| 1326 | checkCompletedWithWrappedException(h1, ex); |
| 1327 | checkCompletedWithWrappedException(h2, ex); |
| 1328 | checkCompletedWithWrappedException(h3, ex); |
| 1329 | checkCompletedWithWrappedException(h4, ex); |
| 1330 | checkCompletedWithWrappedException(h5, ex); |
| 1331 | checkCompletedExceptionally(f, ex); |
| 1332 | for (Noop r : rs) r.assertNotInvoked(); |
| 1333 | }} |
| 1334 | |
| 1335 | /** |
| 1336 | * thenRun result completes exceptionally if source cancelled |
| 1337 | */ |
| 1338 | public void testThenRun_sourceCancelled() { |
| 1339 | for (ExecutionMode m : ExecutionMode.values()) |
| 1340 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1341 | { |
| 1342 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1343 | final Noop[] rs = new Noop[6]; |
| 1344 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 1345 | |
| 1346 | final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]); |
| 1347 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]); |
| 1348 | final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]); |
| 1349 | checkIncomplete(h0); |
| 1350 | checkIncomplete(h1); |
| 1351 | checkIncomplete(h2); |
| 1352 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 1353 | final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]); |
| 1354 | final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]); |
| 1355 | final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]); |
| 1356 | |
| 1357 | checkCompletedWithWrappedCancellationException(h0); |
| 1358 | checkCompletedWithWrappedCancellationException(h1); |
| 1359 | checkCompletedWithWrappedCancellationException(h2); |
| 1360 | checkCompletedWithWrappedCancellationException(h3); |
| 1361 | checkCompletedWithWrappedCancellationException(h4); |
| 1362 | checkCompletedWithWrappedCancellationException(h5); |
| 1363 | checkCancelled(f); |
| 1364 | for (Noop r : rs) r.assertNotInvoked(); |
| 1365 | }} |
| 1366 | |
| 1367 | /** |
| 1368 | * thenRun result completes exceptionally if action does |
| 1369 | */ |
| 1370 | public void testThenRun_actionFailed() { |
| 1371 | for (ExecutionMode m : ExecutionMode.values()) |
| 1372 | for (Integer v1 : new Integer[] { 1, null }) |
| 1373 | { |
| 1374 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1375 | final FailingRunnable[] rs = new FailingRunnable[6]; |
| 1376 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m); |
| 1377 | |
| 1378 | final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]); |
| 1379 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]); |
| 1380 | final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]); |
| 1381 | assertTrue(f.complete(v1)); |
| 1382 | final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]); |
| 1383 | final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]); |
| 1384 | final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]); |
| 1385 | |
| 1386 | checkCompletedWithWrappedCFException(h0); |
| 1387 | checkCompletedWithWrappedCFException(h1); |
| 1388 | checkCompletedWithWrappedCFException(h2); |
| 1389 | checkCompletedWithWrappedCFException(h3); |
| 1390 | checkCompletedWithWrappedCFException(h4); |
| 1391 | checkCompletedWithWrappedCFException(h5); |
| 1392 | checkCompletedNormally(f, v1); |
| 1393 | }} |
| 1394 | |
| 1395 | /** |
| 1396 | * thenApply result completes normally after normal completion of source |
| 1397 | */ |
| 1398 | public void testThenApply_normalCompletion() { |
| 1399 | for (ExecutionMode m : ExecutionMode.values()) |
| 1400 | for (Integer v1 : new Integer[] { 1, null }) |
| 1401 | { |
| 1402 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1403 | final IncFunction[] rs = new IncFunction[4]; |
| 1404 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 1405 | |
| 1406 | final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]); |
| 1407 | final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]); |
| 1408 | checkIncomplete(h0); |
| 1409 | checkIncomplete(h1); |
| 1410 | assertTrue(f.complete(v1)); |
| 1411 | final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]); |
| 1412 | final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]); |
| 1413 | |
| 1414 | checkCompletedNormally(h0, inc(v1)); |
| 1415 | checkCompletedNormally(h1, inc(v1)); |
| 1416 | checkCompletedNormally(h2, inc(v1)); |
| 1417 | checkCompletedNormally(h3, inc(v1)); |
| 1418 | checkCompletedNormally(f, v1); |
| 1419 | for (IncFunction r : rs) r.assertValue(inc(v1)); |
| 1420 | }} |
| 1421 | |
| 1422 | /** |
| 1423 | * thenApply result completes exceptionally after exceptional |
| 1424 | * completion of source |
| 1425 | */ |
| 1426 | public void testThenApply_exceptionalCompletion() { |
| 1427 | for (ExecutionMode m : ExecutionMode.values()) |
| 1428 | { |
| 1429 | final CFException ex = new CFException(); |
| 1430 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1431 | final IncFunction[] rs = new IncFunction[4]; |
| 1432 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 1433 | |
| 1434 | final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]); |
| 1435 | final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]); |
| 1436 | assertTrue(f.completeExceptionally(ex)); |
| 1437 | final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]); |
| 1438 | final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]); |
| 1439 | |
| 1440 | checkCompletedWithWrappedException(h0, ex); |
| 1441 | checkCompletedWithWrappedException(h1, ex); |
| 1442 | checkCompletedWithWrappedException(h2, ex); |
| 1443 | checkCompletedWithWrappedException(h3, ex); |
| 1444 | checkCompletedExceptionally(f, ex); |
| 1445 | for (IncFunction r : rs) r.assertNotInvoked(); |
| 1446 | }} |
| 1447 | |
| 1448 | /** |
| 1449 | * thenApply result completes exceptionally if source cancelled |
| 1450 | */ |
| 1451 | public void testThenApply_sourceCancelled() { |
| 1452 | for (ExecutionMode m : ExecutionMode.values()) |
| 1453 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1454 | { |
| 1455 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1456 | final IncFunction[] rs = new IncFunction[4]; |
| 1457 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 1458 | |
| 1459 | final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]); |
| 1460 | final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]); |
| 1461 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 1462 | final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]); |
| 1463 | final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]); |
| 1464 | |
| 1465 | checkCompletedWithWrappedCancellationException(h0); |
| 1466 | checkCompletedWithWrappedCancellationException(h1); |
| 1467 | checkCompletedWithWrappedCancellationException(h2); |
| 1468 | checkCompletedWithWrappedCancellationException(h3); |
| 1469 | checkCancelled(f); |
| 1470 | for (IncFunction r : rs) r.assertNotInvoked(); |
| 1471 | }} |
| 1472 | |
| 1473 | /** |
| 1474 | * thenApply result completes exceptionally if action does |
| 1475 | */ |
| 1476 | public void testThenApply_actionFailed() { |
| 1477 | for (ExecutionMode m : ExecutionMode.values()) |
| 1478 | for (Integer v1 : new Integer[] { 1, null }) |
| 1479 | { |
| 1480 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1481 | final FailingFunction[] rs = new FailingFunction[4]; |
| 1482 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m); |
| 1483 | |
| 1484 | final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]); |
| 1485 | final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]); |
| 1486 | assertTrue(f.complete(v1)); |
| 1487 | final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]); |
| 1488 | final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]); |
| 1489 | |
| 1490 | checkCompletedWithWrappedCFException(h0); |
| 1491 | checkCompletedWithWrappedCFException(h1); |
| 1492 | checkCompletedWithWrappedCFException(h2); |
| 1493 | checkCompletedWithWrappedCFException(h3); |
| 1494 | checkCompletedNormally(f, v1); |
| 1495 | }} |
| 1496 | |
| 1497 | /** |
| 1498 | * thenAccept result completes normally after normal completion of source |
| 1499 | */ |
| 1500 | public void testThenAccept_normalCompletion() { |
| 1501 | for (ExecutionMode m : ExecutionMode.values()) |
| 1502 | for (Integer v1 : new Integer[] { 1, null }) |
| 1503 | { |
| 1504 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1505 | final NoopConsumer[] rs = new NoopConsumer[4]; |
| 1506 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 1507 | |
| 1508 | final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]); |
| 1509 | final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]); |
| 1510 | checkIncomplete(h0); |
| 1511 | checkIncomplete(h1); |
| 1512 | assertTrue(f.complete(v1)); |
| 1513 | final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]); |
| 1514 | final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]); |
| 1515 | |
| 1516 | checkCompletedNormally(h0, null); |
| 1517 | checkCompletedNormally(h1, null); |
| 1518 | checkCompletedNormally(h2, null); |
| 1519 | checkCompletedNormally(h3, null); |
| 1520 | checkCompletedNormally(f, v1); |
| 1521 | for (NoopConsumer r : rs) r.assertValue(v1); |
| 1522 | }} |
| 1523 | |
| 1524 | /** |
| 1525 | * thenAccept result completes exceptionally after exceptional |
| 1526 | * completion of source |
| 1527 | */ |
| 1528 | public void testThenAccept_exceptionalCompletion() { |
| 1529 | for (ExecutionMode m : ExecutionMode.values()) |
| 1530 | { |
| 1531 | final CFException ex = new CFException(); |
| 1532 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1533 | final NoopConsumer[] rs = new NoopConsumer[4]; |
| 1534 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 1535 | |
| 1536 | final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]); |
| 1537 | final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]); |
| 1538 | assertTrue(f.completeExceptionally(ex)); |
| 1539 | final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]); |
| 1540 | final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]); |
| 1541 | |
| 1542 | checkCompletedWithWrappedException(h0, ex); |
| 1543 | checkCompletedWithWrappedException(h1, ex); |
| 1544 | checkCompletedWithWrappedException(h2, ex); |
| 1545 | checkCompletedWithWrappedException(h3, ex); |
| 1546 | checkCompletedExceptionally(f, ex); |
| 1547 | for (NoopConsumer r : rs) r.assertNotInvoked(); |
| 1548 | }} |
| 1549 | |
| 1550 | /** |
| 1551 | * thenAccept result completes exceptionally if source cancelled |
| 1552 | */ |
| 1553 | public void testThenAccept_sourceCancelled() { |
| 1554 | for (ExecutionMode m : ExecutionMode.values()) |
| 1555 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1556 | { |
| 1557 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1558 | final NoopConsumer[] rs = new NoopConsumer[4]; |
| 1559 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 1560 | |
| 1561 | final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]); |
| 1562 | final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]); |
| 1563 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 1564 | final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]); |
| 1565 | final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]); |
| 1566 | |
| 1567 | checkCompletedWithWrappedCancellationException(h0); |
| 1568 | checkCompletedWithWrappedCancellationException(h1); |
| 1569 | checkCompletedWithWrappedCancellationException(h2); |
| 1570 | checkCompletedWithWrappedCancellationException(h3); |
| 1571 | checkCancelled(f); |
| 1572 | for (NoopConsumer r : rs) r.assertNotInvoked(); |
| 1573 | }} |
| 1574 | |
| 1575 | /** |
| 1576 | * thenAccept result completes exceptionally if action does |
| 1577 | */ |
| 1578 | public void testThenAccept_actionFailed() { |
| 1579 | for (ExecutionMode m : ExecutionMode.values()) |
| 1580 | for (Integer v1 : new Integer[] { 1, null }) |
| 1581 | { |
| 1582 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1583 | final FailingConsumer[] rs = new FailingConsumer[4]; |
| 1584 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m); |
| 1585 | |
| 1586 | final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]); |
| 1587 | final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]); |
| 1588 | assertTrue(f.complete(v1)); |
| 1589 | final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]); |
| 1590 | final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]); |
| 1591 | |
| 1592 | checkCompletedWithWrappedCFException(h0); |
| 1593 | checkCompletedWithWrappedCFException(h1); |
| 1594 | checkCompletedWithWrappedCFException(h2); |
| 1595 | checkCompletedWithWrappedCFException(h3); |
| 1596 | checkCompletedNormally(f, v1); |
| 1597 | }} |
| 1598 | |
| 1599 | /** |
| 1600 | * thenCombine result completes normally after normal completion |
| 1601 | * of sources |
| 1602 | */ |
| 1603 | public void testThenCombine_normalCompletion() { |
| 1604 | for (ExecutionMode m : ExecutionMode.values()) |
| 1605 | for (boolean fFirst : new boolean[] { true, false }) |
| 1606 | for (Integer v1 : new Integer[] { 1, null }) |
| 1607 | for (Integer v2 : new Integer[] { 2, null }) |
| 1608 | { |
| 1609 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1610 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1611 | final SubtractFunction[] rs = new SubtractFunction[6]; |
| 1612 | for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m); |
| 1613 | |
| 1614 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1615 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1616 | final Integer w1 = fFirst ? v1 : v2; |
| 1617 | final Integer w2 = !fFirst ? v1 : v2; |
| 1618 | |
| 1619 | final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]); |
| 1620 | final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]); |
| 1621 | assertTrue(fst.complete(w1)); |
| 1622 | final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]); |
| 1623 | final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]); |
| 1624 | checkIncomplete(h0); rs[0].assertNotInvoked(); |
| 1625 | checkIncomplete(h2); rs[2].assertNotInvoked(); |
| 1626 | checkCompletedNormally(h1, subtract(w1, w1)); |
| 1627 | checkCompletedNormally(h3, subtract(w1, w1)); |
| 1628 | rs[1].assertValue(subtract(w1, w1)); |
| 1629 | rs[3].assertValue(subtract(w1, w1)); |
| 1630 | assertTrue(snd.complete(w2)); |
| 1631 | final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]); |
| 1632 | |
| 1633 | checkCompletedNormally(h0, subtract(v1, v2)); |
| 1634 | checkCompletedNormally(h2, subtract(v1, v2)); |
| 1635 | checkCompletedNormally(h4, subtract(v1, v2)); |
| 1636 | rs[0].assertValue(subtract(v1, v2)); |
| 1637 | rs[2].assertValue(subtract(v1, v2)); |
| 1638 | rs[4].assertValue(subtract(v1, v2)); |
| 1639 | |
| 1640 | checkCompletedNormally(f, v1); |
| 1641 | checkCompletedNormally(g, v2); |
| 1642 | }} |
| 1643 | |
| 1644 | /** |
| 1645 | * thenCombine result completes exceptionally after exceptional |
| 1646 | * completion of either source |
| 1647 | */ |
| 1648 | public void testThenCombine_exceptionalCompletion() throws Throwable { |
| 1649 | for (ExecutionMode m : ExecutionMode.values()) |
| 1650 | for (boolean fFirst : new boolean[] { true, false }) |
| 1651 | for (boolean failFirst : new boolean[] { true, false }) |
| 1652 | for (Integer v1 : new Integer[] { 1, null }) |
| 1653 | { |
| 1654 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1655 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1656 | final CFException ex = new CFException(); |
| 1657 | final SubtractFunction r1 = new SubtractFunction(m); |
| 1658 | final SubtractFunction r2 = new SubtractFunction(m); |
| 1659 | final SubtractFunction r3 = new SubtractFunction(m); |
| 1660 | |
| 1661 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1662 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1663 | final Callable<Boolean> complete1 = failFirst ? |
| 1664 | () -> fst.completeExceptionally(ex) : |
| 1665 | () -> fst.complete(v1); |
| 1666 | final Callable<Boolean> complete2 = failFirst ? |
| 1667 | () -> snd.complete(v1) : |
| 1668 | () -> snd.completeExceptionally(ex); |
| 1669 | |
| 1670 | final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1); |
| 1671 | assertTrue(complete1.call()); |
| 1672 | final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2); |
| 1673 | checkIncomplete(h1); |
| 1674 | checkIncomplete(h2); |
| 1675 | assertTrue(complete2.call()); |
| 1676 | final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3); |
| 1677 | |
| 1678 | checkCompletedWithWrappedException(h1, ex); |
| 1679 | checkCompletedWithWrappedException(h2, ex); |
| 1680 | checkCompletedWithWrappedException(h3, ex); |
| 1681 | r1.assertNotInvoked(); |
| 1682 | r2.assertNotInvoked(); |
| 1683 | r3.assertNotInvoked(); |
| 1684 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 1685 | checkCompletedExceptionally(failFirst ? fst : snd, ex); |
| 1686 | }} |
| 1687 | |
| 1688 | /** |
| 1689 | * thenCombine result completes exceptionally if either source cancelled |
| 1690 | */ |
| 1691 | public void testThenCombine_sourceCancelled() throws Throwable { |
| 1692 | for (ExecutionMode m : ExecutionMode.values()) |
| 1693 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1694 | for (boolean fFirst : new boolean[] { true, false }) |
| 1695 | for (boolean failFirst : new boolean[] { true, false }) |
| 1696 | for (Integer v1 : new Integer[] { 1, null }) |
| 1697 | { |
| 1698 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1699 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1700 | final SubtractFunction r1 = new SubtractFunction(m); |
| 1701 | final SubtractFunction r2 = new SubtractFunction(m); |
| 1702 | final SubtractFunction r3 = new SubtractFunction(m); |
| 1703 | |
| 1704 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1705 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1706 | final Callable<Boolean> complete1 = failFirst ? |
| 1707 | () -> fst.cancel(mayInterruptIfRunning) : |
| 1708 | () -> fst.complete(v1); |
| 1709 | final Callable<Boolean> complete2 = failFirst ? |
| 1710 | () -> snd.complete(v1) : |
| 1711 | () -> snd.cancel(mayInterruptIfRunning); |
| 1712 | |
| 1713 | final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1); |
| 1714 | assertTrue(complete1.call()); |
| 1715 | final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2); |
| 1716 | checkIncomplete(h1); |
| 1717 | checkIncomplete(h2); |
| 1718 | assertTrue(complete2.call()); |
| 1719 | final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3); |
| 1720 | |
| 1721 | checkCompletedWithWrappedCancellationException(h1); |
| 1722 | checkCompletedWithWrappedCancellationException(h2); |
| 1723 | checkCompletedWithWrappedCancellationException(h3); |
| 1724 | r1.assertNotInvoked(); |
| 1725 | r2.assertNotInvoked(); |
| 1726 | r3.assertNotInvoked(); |
| 1727 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 1728 | checkCancelled(failFirst ? fst : snd); |
| 1729 | }} |
| 1730 | |
| 1731 | /** |
| 1732 | * thenCombine result completes exceptionally if action does |
| 1733 | */ |
| 1734 | public void testThenCombine_actionFailed() { |
| 1735 | for (ExecutionMode m : ExecutionMode.values()) |
| 1736 | for (boolean fFirst : new boolean[] { true, false }) |
| 1737 | for (Integer v1 : new Integer[] { 1, null }) |
| 1738 | for (Integer v2 : new Integer[] { 2, null }) |
| 1739 | { |
| 1740 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1741 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1742 | final FailingBiFunction r1 = new FailingBiFunction(m); |
| 1743 | final FailingBiFunction r2 = new FailingBiFunction(m); |
| 1744 | final FailingBiFunction r3 = new FailingBiFunction(m); |
| 1745 | |
| 1746 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1747 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1748 | final Integer w1 = fFirst ? v1 : v2; |
| 1749 | final Integer w2 = !fFirst ? v1 : v2; |
| 1750 | |
| 1751 | final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1); |
| 1752 | assertTrue(fst.complete(w1)); |
| 1753 | final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2); |
| 1754 | assertTrue(snd.complete(w2)); |
| 1755 | final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3); |
| 1756 | |
| 1757 | checkCompletedWithWrappedCFException(h1); |
| 1758 | checkCompletedWithWrappedCFException(h2); |
| 1759 | checkCompletedWithWrappedCFException(h3); |
| 1760 | r1.assertInvoked(); |
| 1761 | r2.assertInvoked(); |
| 1762 | r3.assertInvoked(); |
| 1763 | checkCompletedNormally(f, v1); |
| 1764 | checkCompletedNormally(g, v2); |
| 1765 | }} |
| 1766 | |
| 1767 | /** |
| 1768 | * thenAcceptBoth result completes normally after normal |
| 1769 | * completion of sources |
| 1770 | */ |
| 1771 | public void testThenAcceptBoth_normalCompletion() { |
| 1772 | for (ExecutionMode m : ExecutionMode.values()) |
| 1773 | for (boolean fFirst : new boolean[] { true, false }) |
| 1774 | for (Integer v1 : new Integer[] { 1, null }) |
| 1775 | for (Integer v2 : new Integer[] { 2, null }) |
| 1776 | { |
| 1777 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1778 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1779 | final SubtractAction r1 = new SubtractAction(m); |
| 1780 | final SubtractAction r2 = new SubtractAction(m); |
| 1781 | final SubtractAction r3 = new SubtractAction(m); |
| 1782 | |
| 1783 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1784 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1785 | final Integer w1 = fFirst ? v1 : v2; |
| 1786 | final Integer w2 = !fFirst ? v1 : v2; |
| 1787 | |
| 1788 | final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1); |
| 1789 | assertTrue(fst.complete(w1)); |
| 1790 | final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2); |
| 1791 | checkIncomplete(h1); |
| 1792 | checkIncomplete(h2); |
| 1793 | r1.assertNotInvoked(); |
| 1794 | r2.assertNotInvoked(); |
| 1795 | assertTrue(snd.complete(w2)); |
| 1796 | final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3); |
| 1797 | |
| 1798 | checkCompletedNormally(h1, null); |
| 1799 | checkCompletedNormally(h2, null); |
| 1800 | checkCompletedNormally(h3, null); |
| 1801 | r1.assertValue(subtract(v1, v2)); |
| 1802 | r2.assertValue(subtract(v1, v2)); |
| 1803 | r3.assertValue(subtract(v1, v2)); |
| 1804 | checkCompletedNormally(f, v1); |
| 1805 | checkCompletedNormally(g, v2); |
| 1806 | }} |
| 1807 | |
| 1808 | /** |
| 1809 | * thenAcceptBoth result completes exceptionally after exceptional |
| 1810 | * completion of either source |
| 1811 | */ |
| 1812 | public void testThenAcceptBoth_exceptionalCompletion() throws Throwable { |
| 1813 | for (ExecutionMode m : ExecutionMode.values()) |
| 1814 | for (boolean fFirst : new boolean[] { true, false }) |
| 1815 | for (boolean failFirst : new boolean[] { true, false }) |
| 1816 | for (Integer v1 : new Integer[] { 1, null }) |
| 1817 | { |
| 1818 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1819 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1820 | final CFException ex = new CFException(); |
| 1821 | final SubtractAction r1 = new SubtractAction(m); |
| 1822 | final SubtractAction r2 = new SubtractAction(m); |
| 1823 | final SubtractAction r3 = new SubtractAction(m); |
| 1824 | |
| 1825 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1826 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1827 | final Callable<Boolean> complete1 = failFirst ? |
| 1828 | () -> fst.completeExceptionally(ex) : |
| 1829 | () -> fst.complete(v1); |
| 1830 | final Callable<Boolean> complete2 = failFirst ? |
| 1831 | () -> snd.complete(v1) : |
| 1832 | () -> snd.completeExceptionally(ex); |
| 1833 | |
| 1834 | final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1); |
| 1835 | assertTrue(complete1.call()); |
| 1836 | final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2); |
| 1837 | checkIncomplete(h1); |
| 1838 | checkIncomplete(h2); |
| 1839 | assertTrue(complete2.call()); |
| 1840 | final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3); |
| 1841 | |
| 1842 | checkCompletedWithWrappedException(h1, ex); |
| 1843 | checkCompletedWithWrappedException(h2, ex); |
| 1844 | checkCompletedWithWrappedException(h3, ex); |
| 1845 | r1.assertNotInvoked(); |
| 1846 | r2.assertNotInvoked(); |
| 1847 | r3.assertNotInvoked(); |
| 1848 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 1849 | checkCompletedExceptionally(failFirst ? fst : snd, ex); |
| 1850 | }} |
| 1851 | |
| 1852 | /** |
| 1853 | * thenAcceptBoth result completes exceptionally if either source cancelled |
| 1854 | */ |
| 1855 | public void testThenAcceptBoth_sourceCancelled() throws Throwable { |
| 1856 | for (ExecutionMode m : ExecutionMode.values()) |
| 1857 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 1858 | for (boolean fFirst : new boolean[] { true, false }) |
| 1859 | for (boolean failFirst : new boolean[] { true, false }) |
| 1860 | for (Integer v1 : new Integer[] { 1, null }) |
| 1861 | { |
| 1862 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1863 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1864 | final SubtractAction r1 = new SubtractAction(m); |
| 1865 | final SubtractAction r2 = new SubtractAction(m); |
| 1866 | final SubtractAction r3 = new SubtractAction(m); |
| 1867 | |
| 1868 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1869 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1870 | final Callable<Boolean> complete1 = failFirst ? |
| 1871 | () -> fst.cancel(mayInterruptIfRunning) : |
| 1872 | () -> fst.complete(v1); |
| 1873 | final Callable<Boolean> complete2 = failFirst ? |
| 1874 | () -> snd.complete(v1) : |
| 1875 | () -> snd.cancel(mayInterruptIfRunning); |
| 1876 | |
| 1877 | final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1); |
| 1878 | assertTrue(complete1.call()); |
| 1879 | final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2); |
| 1880 | checkIncomplete(h1); |
| 1881 | checkIncomplete(h2); |
| 1882 | assertTrue(complete2.call()); |
| 1883 | final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3); |
| 1884 | |
| 1885 | checkCompletedWithWrappedCancellationException(h1); |
| 1886 | checkCompletedWithWrappedCancellationException(h2); |
| 1887 | checkCompletedWithWrappedCancellationException(h3); |
| 1888 | r1.assertNotInvoked(); |
| 1889 | r2.assertNotInvoked(); |
| 1890 | r3.assertNotInvoked(); |
| 1891 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 1892 | checkCancelled(failFirst ? fst : snd); |
| 1893 | }} |
| 1894 | |
| 1895 | /** |
| 1896 | * thenAcceptBoth result completes exceptionally if action does |
| 1897 | */ |
| 1898 | public void testThenAcceptBoth_actionFailed() { |
| 1899 | for (ExecutionMode m : ExecutionMode.values()) |
| 1900 | for (boolean fFirst : new boolean[] { true, false }) |
| 1901 | for (Integer v1 : new Integer[] { 1, null }) |
| 1902 | for (Integer v2 : new Integer[] { 2, null }) |
| 1903 | { |
| 1904 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1905 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1906 | final FailingBiConsumer r1 = new FailingBiConsumer(m); |
| 1907 | final FailingBiConsumer r2 = new FailingBiConsumer(m); |
| 1908 | final FailingBiConsumer r3 = new FailingBiConsumer(m); |
| 1909 | |
| 1910 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1911 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1912 | final Integer w1 = fFirst ? v1 : v2; |
| 1913 | final Integer w2 = !fFirst ? v1 : v2; |
| 1914 | |
| 1915 | final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1); |
| 1916 | assertTrue(fst.complete(w1)); |
| 1917 | final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2); |
| 1918 | assertTrue(snd.complete(w2)); |
| 1919 | final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3); |
| 1920 | |
| 1921 | checkCompletedWithWrappedCFException(h1); |
| 1922 | checkCompletedWithWrappedCFException(h2); |
| 1923 | checkCompletedWithWrappedCFException(h3); |
| 1924 | r1.assertInvoked(); |
| 1925 | r2.assertInvoked(); |
| 1926 | r3.assertInvoked(); |
| 1927 | checkCompletedNormally(f, v1); |
| 1928 | checkCompletedNormally(g, v2); |
| 1929 | }} |
| 1930 | |
| 1931 | /** |
| 1932 | * runAfterBoth result completes normally after normal |
| 1933 | * completion of sources |
| 1934 | */ |
| 1935 | public void testRunAfterBoth_normalCompletion() { |
| 1936 | for (ExecutionMode m : ExecutionMode.values()) |
| 1937 | for (boolean fFirst : new boolean[] { true, false }) |
| 1938 | for (Integer v1 : new Integer[] { 1, null }) |
| 1939 | for (Integer v2 : new Integer[] { 2, null }) |
| 1940 | { |
| 1941 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1942 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1943 | final Noop r1 = new Noop(m); |
| 1944 | final Noop r2 = new Noop(m); |
| 1945 | final Noop r3 = new Noop(m); |
| 1946 | |
| 1947 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1948 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1949 | final Integer w1 = fFirst ? v1 : v2; |
| 1950 | final Integer w2 = !fFirst ? v1 : v2; |
| 1951 | |
| 1952 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1); |
| 1953 | assertTrue(fst.complete(w1)); |
| 1954 | final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2); |
| 1955 | checkIncomplete(h1); |
| 1956 | checkIncomplete(h2); |
| 1957 | r1.assertNotInvoked(); |
| 1958 | r2.assertNotInvoked(); |
| 1959 | assertTrue(snd.complete(w2)); |
| 1960 | final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3); |
| 1961 | |
| 1962 | checkCompletedNormally(h1, null); |
| 1963 | checkCompletedNormally(h2, null); |
| 1964 | checkCompletedNormally(h3, null); |
| 1965 | r1.assertInvoked(); |
| 1966 | r2.assertInvoked(); |
| 1967 | r3.assertInvoked(); |
| 1968 | checkCompletedNormally(f, v1); |
| 1969 | checkCompletedNormally(g, v2); |
| 1970 | }} |
| 1971 | |
| 1972 | /** |
| 1973 | * runAfterBoth result completes exceptionally after exceptional |
| 1974 | * completion of either source |
| 1975 | */ |
| 1976 | public void testRunAfterBoth_exceptionalCompletion() throws Throwable { |
| 1977 | for (ExecutionMode m : ExecutionMode.values()) |
| 1978 | for (boolean fFirst : new boolean[] { true, false }) |
| 1979 | for (boolean failFirst : new boolean[] { true, false }) |
| 1980 | for (Integer v1 : new Integer[] { 1, null }) |
| 1981 | { |
| 1982 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 1983 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 1984 | final CFException ex = new CFException(); |
| 1985 | final Noop r1 = new Noop(m); |
| 1986 | final Noop r2 = new Noop(m); |
| 1987 | final Noop r3 = new Noop(m); |
| 1988 | |
| 1989 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 1990 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 1991 | final Callable<Boolean> complete1 = failFirst ? |
| 1992 | () -> fst.completeExceptionally(ex) : |
| 1993 | () -> fst.complete(v1); |
| 1994 | final Callable<Boolean> complete2 = failFirst ? |
| 1995 | () -> snd.complete(v1) : |
| 1996 | () -> snd.completeExceptionally(ex); |
| 1997 | |
| 1998 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1); |
| 1999 | assertTrue(complete1.call()); |
| 2000 | final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2); |
| 2001 | checkIncomplete(h1); |
| 2002 | checkIncomplete(h2); |
| 2003 | assertTrue(complete2.call()); |
| 2004 | final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3); |
| 2005 | |
| 2006 | checkCompletedWithWrappedException(h1, ex); |
| 2007 | checkCompletedWithWrappedException(h2, ex); |
| 2008 | checkCompletedWithWrappedException(h3, ex); |
| 2009 | r1.assertNotInvoked(); |
| 2010 | r2.assertNotInvoked(); |
| 2011 | r3.assertNotInvoked(); |
| 2012 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 2013 | checkCompletedExceptionally(failFirst ? fst : snd, ex); |
| 2014 | }} |
| 2015 | |
| 2016 | /** |
| 2017 | * runAfterBoth result completes exceptionally if either source cancelled |
| 2018 | */ |
| 2019 | public void testRunAfterBoth_sourceCancelled() throws Throwable { |
| 2020 | for (ExecutionMode m : ExecutionMode.values()) |
| 2021 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2022 | for (boolean fFirst : new boolean[] { true, false }) |
| 2023 | for (boolean failFirst : new boolean[] { true, false }) |
| 2024 | for (Integer v1 : new Integer[] { 1, null }) |
| 2025 | { |
| 2026 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2027 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2028 | final Noop r1 = new Noop(m); |
| 2029 | final Noop r2 = new Noop(m); |
| 2030 | final Noop r3 = new Noop(m); |
| 2031 | |
| 2032 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 2033 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 2034 | final Callable<Boolean> complete1 = failFirst ? |
| 2035 | () -> fst.cancel(mayInterruptIfRunning) : |
| 2036 | () -> fst.complete(v1); |
| 2037 | final Callable<Boolean> complete2 = failFirst ? |
| 2038 | () -> snd.complete(v1) : |
| 2039 | () -> snd.cancel(mayInterruptIfRunning); |
| 2040 | |
| 2041 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1); |
| 2042 | assertTrue(complete1.call()); |
| 2043 | final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2); |
| 2044 | checkIncomplete(h1); |
| 2045 | checkIncomplete(h2); |
| 2046 | assertTrue(complete2.call()); |
| 2047 | final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3); |
| 2048 | |
| 2049 | checkCompletedWithWrappedCancellationException(h1); |
| 2050 | checkCompletedWithWrappedCancellationException(h2); |
| 2051 | checkCompletedWithWrappedCancellationException(h3); |
| 2052 | r1.assertNotInvoked(); |
| 2053 | r2.assertNotInvoked(); |
| 2054 | r3.assertNotInvoked(); |
| 2055 | checkCompletedNormally(failFirst ? snd : fst, v1); |
| 2056 | checkCancelled(failFirst ? fst : snd); |
| 2057 | }} |
| 2058 | |
| 2059 | /** |
| 2060 | * runAfterBoth result completes exceptionally if action does |
| 2061 | */ |
| 2062 | public void testRunAfterBoth_actionFailed() { |
| 2063 | for (ExecutionMode m : ExecutionMode.values()) |
| 2064 | for (boolean fFirst : new boolean[] { true, false }) |
| 2065 | for (Integer v1 : new Integer[] { 1, null }) |
| 2066 | for (Integer v2 : new Integer[] { 2, null }) |
| 2067 | { |
| 2068 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2069 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2070 | final FailingRunnable r1 = new FailingRunnable(m); |
| 2071 | final FailingRunnable r2 = new FailingRunnable(m); |
| 2072 | final FailingRunnable r3 = new FailingRunnable(m); |
| 2073 | |
| 2074 | final CompletableFuture<Integer> fst = fFirst ? f : g; |
| 2075 | final CompletableFuture<Integer> snd = !fFirst ? f : g; |
| 2076 | final Integer w1 = fFirst ? v1 : v2; |
| 2077 | final Integer w2 = !fFirst ? v1 : v2; |
| 2078 | |
| 2079 | final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1); |
| 2080 | assertTrue(fst.complete(w1)); |
| 2081 | final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2); |
| 2082 | assertTrue(snd.complete(w2)); |
| 2083 | final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3); |
| 2084 | |
| 2085 | checkCompletedWithWrappedCFException(h1); |
| 2086 | checkCompletedWithWrappedCFException(h2); |
| 2087 | checkCompletedWithWrappedCFException(h3); |
| 2088 | r1.assertInvoked(); |
| 2089 | r2.assertInvoked(); |
| 2090 | r3.assertInvoked(); |
| 2091 | checkCompletedNormally(f, v1); |
| 2092 | checkCompletedNormally(g, v2); |
| 2093 | }} |
| 2094 | |
| 2095 | /** |
| 2096 | * applyToEither result completes normally after normal completion |
| 2097 | * of either source |
| 2098 | */ |
| 2099 | public void testApplyToEither_normalCompletion() { |
| 2100 | for (ExecutionMode m : ExecutionMode.values()) |
| 2101 | for (Integer v1 : new Integer[] { 1, null }) |
| 2102 | for (Integer v2 : new Integer[] { 2, null }) |
| 2103 | { |
| 2104 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2105 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2106 | final IncFunction[] rs = new IncFunction[6]; |
| 2107 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 2108 | |
| 2109 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2110 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2111 | checkIncomplete(h0); |
| 2112 | checkIncomplete(h1); |
| 2113 | rs[0].assertNotInvoked(); |
| 2114 | rs[1].assertNotInvoked(); |
| 2115 | f.complete(v1); |
| 2116 | checkCompletedNormally(h0, inc(v1)); |
| 2117 | checkCompletedNormally(h1, inc(v1)); |
| 2118 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2119 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2120 | checkCompletedNormally(h2, inc(v1)); |
| 2121 | checkCompletedNormally(h3, inc(v1)); |
| 2122 | g.complete(v2); |
| 2123 | |
| 2124 | // unspecified behavior - both source completions available |
| 2125 | final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]); |
| 2126 | final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]); |
| 2127 | rs[4].assertValue(h4.join()); |
| 2128 | rs[5].assertValue(h5.join()); |
| 2129 | assertTrue(Objects.equals(inc(v1), h4.join()) || |
| 2130 | Objects.equals(inc(v2), h4.join())); |
| 2131 | assertTrue(Objects.equals(inc(v1), h5.join()) || |
| 2132 | Objects.equals(inc(v2), h5.join())); |
| 2133 | |
| 2134 | checkCompletedNormally(f, v1); |
| 2135 | checkCompletedNormally(g, v2); |
| 2136 | checkCompletedNormally(h0, inc(v1)); |
| 2137 | checkCompletedNormally(h1, inc(v1)); |
| 2138 | checkCompletedNormally(h2, inc(v1)); |
| 2139 | checkCompletedNormally(h3, inc(v1)); |
| 2140 | for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1)); |
| 2141 | }} |
| 2142 | |
| 2143 | /** |
| 2144 | * applyToEither result completes exceptionally after exceptional |
| 2145 | * completion of either source |
| 2146 | */ |
| 2147 | public void testApplyToEither_exceptionalCompletion() { |
| 2148 | for (ExecutionMode m : ExecutionMode.values()) |
| 2149 | for (Integer v1 : new Integer[] { 1, null }) |
| 2150 | { |
| 2151 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2152 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2153 | final CFException ex = new CFException(); |
| 2154 | final IncFunction[] rs = new IncFunction[6]; |
| 2155 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 2156 | |
| 2157 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2158 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2159 | checkIncomplete(h0); |
| 2160 | checkIncomplete(h1); |
| 2161 | rs[0].assertNotInvoked(); |
| 2162 | rs[1].assertNotInvoked(); |
| 2163 | f.completeExceptionally(ex); |
| 2164 | checkCompletedWithWrappedException(h0, ex); |
| 2165 | checkCompletedWithWrappedException(h1, ex); |
| 2166 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2167 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2168 | checkCompletedWithWrappedException(h2, ex); |
| 2169 | checkCompletedWithWrappedException(h3, ex); |
| 2170 | g.complete(v1); |
| 2171 | |
| 2172 | // unspecified behavior - both source completions available |
| 2173 | final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]); |
| 2174 | final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]); |
| 2175 | try { |
| 2176 | assertEquals(inc(v1), h4.join()); |
| 2177 | rs[4].assertValue(inc(v1)); |
| 2178 | } catch (CompletionException ok) { |
| 2179 | checkCompletedWithWrappedException(h4, ex); |
| 2180 | rs[4].assertNotInvoked(); |
| 2181 | } |
| 2182 | try { |
| 2183 | assertEquals(inc(v1), h5.join()); |
| 2184 | rs[5].assertValue(inc(v1)); |
| 2185 | } catch (CompletionException ok) { |
| 2186 | checkCompletedWithWrappedException(h5, ex); |
| 2187 | rs[5].assertNotInvoked(); |
| 2188 | } |
| 2189 | |
| 2190 | checkCompletedExceptionally(f, ex); |
| 2191 | checkCompletedNormally(g, v1); |
| 2192 | checkCompletedWithWrappedException(h0, ex); |
| 2193 | checkCompletedWithWrappedException(h1, ex); |
| 2194 | checkCompletedWithWrappedException(h2, ex); |
| 2195 | checkCompletedWithWrappedException(h3, ex); |
| 2196 | checkCompletedWithWrappedException(h4, ex); |
| 2197 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2198 | }} |
| 2199 | |
| 2200 | public void testApplyToEither_exceptionalCompletion2() { |
| 2201 | for (ExecutionMode m : ExecutionMode.values()) |
| 2202 | for (boolean fFirst : new boolean[] { true, false }) |
| 2203 | for (Integer v1 : new Integer[] { 1, null }) |
| 2204 | { |
| 2205 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2206 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2207 | final CFException ex = new CFException(); |
| 2208 | final IncFunction[] rs = new IncFunction[6]; |
| 2209 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 2210 | |
| 2211 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2212 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2213 | assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2214 | assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2215 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2216 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2217 | |
| 2218 | // unspecified behavior - both source completions available |
| 2219 | try { |
| 2220 | assertEquals(inc(v1), h0.join()); |
| 2221 | rs[0].assertValue(inc(v1)); |
| 2222 | } catch (CompletionException ok) { |
| 2223 | checkCompletedWithWrappedException(h0, ex); |
| 2224 | rs[0].assertNotInvoked(); |
| 2225 | } |
| 2226 | try { |
| 2227 | assertEquals(inc(v1), h1.join()); |
| 2228 | rs[1].assertValue(inc(v1)); |
| 2229 | } catch (CompletionException ok) { |
| 2230 | checkCompletedWithWrappedException(h1, ex); |
| 2231 | rs[1].assertNotInvoked(); |
| 2232 | } |
| 2233 | try { |
| 2234 | assertEquals(inc(v1), h2.join()); |
| 2235 | rs[2].assertValue(inc(v1)); |
| 2236 | } catch (CompletionException ok) { |
| 2237 | checkCompletedWithWrappedException(h2, ex); |
| 2238 | rs[2].assertNotInvoked(); |
| 2239 | } |
| 2240 | try { |
| 2241 | assertEquals(inc(v1), h3.join()); |
| 2242 | rs[3].assertValue(inc(v1)); |
| 2243 | } catch (CompletionException ok) { |
| 2244 | checkCompletedWithWrappedException(h3, ex); |
| 2245 | rs[3].assertNotInvoked(); |
| 2246 | } |
| 2247 | |
| 2248 | checkCompletedNormally(f, v1); |
| 2249 | checkCompletedExceptionally(g, ex); |
| 2250 | }} |
| 2251 | |
| 2252 | /** |
| 2253 | * applyToEither result completes exceptionally if either source cancelled |
| 2254 | */ |
| 2255 | public void testApplyToEither_sourceCancelled() { |
| 2256 | for (ExecutionMode m : ExecutionMode.values()) |
| 2257 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2258 | for (Integer v1 : new Integer[] { 1, null }) |
| 2259 | { |
| 2260 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2261 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2262 | final IncFunction[] rs = new IncFunction[6]; |
| 2263 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 2264 | |
| 2265 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2266 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2267 | checkIncomplete(h0); |
| 2268 | checkIncomplete(h1); |
| 2269 | rs[0].assertNotInvoked(); |
| 2270 | rs[1].assertNotInvoked(); |
| 2271 | f.cancel(mayInterruptIfRunning); |
| 2272 | checkCompletedWithWrappedCancellationException(h0); |
| 2273 | checkCompletedWithWrappedCancellationException(h1); |
| 2274 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2275 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2276 | checkCompletedWithWrappedCancellationException(h2); |
| 2277 | checkCompletedWithWrappedCancellationException(h3); |
| 2278 | g.complete(v1); |
| 2279 | |
| 2280 | // unspecified behavior - both source completions available |
| 2281 | final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]); |
| 2282 | final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]); |
| 2283 | try { |
| 2284 | assertEquals(inc(v1), h4.join()); |
| 2285 | rs[4].assertValue(inc(v1)); |
| 2286 | } catch (CompletionException ok) { |
| 2287 | checkCompletedWithWrappedCancellationException(h4); |
| 2288 | rs[4].assertNotInvoked(); |
| 2289 | } |
| 2290 | try { |
| 2291 | assertEquals(inc(v1), h5.join()); |
| 2292 | rs[5].assertValue(inc(v1)); |
| 2293 | } catch (CompletionException ok) { |
| 2294 | checkCompletedWithWrappedCancellationException(h5); |
| 2295 | rs[5].assertNotInvoked(); |
| 2296 | } |
| 2297 | |
| 2298 | checkCancelled(f); |
| 2299 | checkCompletedNormally(g, v1); |
| 2300 | checkCompletedWithWrappedCancellationException(h0); |
| 2301 | checkCompletedWithWrappedCancellationException(h1); |
| 2302 | checkCompletedWithWrappedCancellationException(h2); |
| 2303 | checkCompletedWithWrappedCancellationException(h3); |
| 2304 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2305 | }} |
| 2306 | |
| 2307 | public void testApplyToEither_sourceCancelled2() { |
| 2308 | for (ExecutionMode m : ExecutionMode.values()) |
| 2309 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2310 | for (boolean fFirst : new boolean[] { true, false }) |
| 2311 | for (Integer v1 : new Integer[] { 1, null }) |
| 2312 | { |
| 2313 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2314 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2315 | final IncFunction[] rs = new IncFunction[6]; |
| 2316 | for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m); |
| 2317 | |
| 2318 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2319 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2320 | assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning)); |
| 2321 | assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning)); |
| 2322 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2323 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2324 | |
| 2325 | // unspecified behavior - both source completions available |
| 2326 | try { |
| 2327 | assertEquals(inc(v1), h0.join()); |
| 2328 | rs[0].assertValue(inc(v1)); |
| 2329 | } catch (CompletionException ok) { |
| 2330 | checkCompletedWithWrappedCancellationException(h0); |
| 2331 | rs[0].assertNotInvoked(); |
| 2332 | } |
| 2333 | try { |
| 2334 | assertEquals(inc(v1), h1.join()); |
| 2335 | rs[1].assertValue(inc(v1)); |
| 2336 | } catch (CompletionException ok) { |
| 2337 | checkCompletedWithWrappedCancellationException(h1); |
| 2338 | rs[1].assertNotInvoked(); |
| 2339 | } |
| 2340 | try { |
| 2341 | assertEquals(inc(v1), h2.join()); |
| 2342 | rs[2].assertValue(inc(v1)); |
| 2343 | } catch (CompletionException ok) { |
| 2344 | checkCompletedWithWrappedCancellationException(h2); |
| 2345 | rs[2].assertNotInvoked(); |
| 2346 | } |
| 2347 | try { |
| 2348 | assertEquals(inc(v1), h3.join()); |
| 2349 | rs[3].assertValue(inc(v1)); |
| 2350 | } catch (CompletionException ok) { |
| 2351 | checkCompletedWithWrappedCancellationException(h3); |
| 2352 | rs[3].assertNotInvoked(); |
| 2353 | } |
| 2354 | |
| 2355 | checkCompletedNormally(f, v1); |
| 2356 | checkCancelled(g); |
| 2357 | }} |
| 2358 | |
| 2359 | /** |
| 2360 | * applyToEither result completes exceptionally if action does |
| 2361 | */ |
| 2362 | public void testApplyToEither_actionFailed() { |
| 2363 | for (ExecutionMode m : ExecutionMode.values()) |
| 2364 | for (Integer v1 : new Integer[] { 1, null }) |
| 2365 | for (Integer v2 : new Integer[] { 2, null }) |
| 2366 | { |
| 2367 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2368 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2369 | final FailingFunction[] rs = new FailingFunction[6]; |
| 2370 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m); |
| 2371 | |
| 2372 | final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]); |
| 2373 | final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]); |
| 2374 | f.complete(v1); |
| 2375 | final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
| 2376 | final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
| 2377 | checkCompletedWithWrappedCFException(h0); |
| 2378 | checkCompletedWithWrappedCFException(h1); |
| 2379 | checkCompletedWithWrappedCFException(h2); |
| 2380 | checkCompletedWithWrappedCFException(h3); |
| 2381 | for (int i = 0; i < 4; i++) rs[i].assertValue(v1); |
| 2382 | |
| 2383 | g.complete(v2); |
| 2384 | |
| 2385 | // unspecified behavior - both source completions available |
| 2386 | final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]); |
| 2387 | final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]); |
| 2388 | |
| 2389 | checkCompletedWithWrappedCFException(h4); |
| 2390 | assertTrue(Objects.equals(v1, rs[4].value) || |
| 2391 | Objects.equals(v2, rs[4].value)); |
| 2392 | checkCompletedWithWrappedCFException(h5); |
| 2393 | assertTrue(Objects.equals(v1, rs[5].value) || |
| 2394 | Objects.equals(v2, rs[5].value)); |
| 2395 | |
| 2396 | checkCompletedNormally(f, v1); |
| 2397 | checkCompletedNormally(g, v2); |
| 2398 | }} |
| 2399 | |
| 2400 | /** |
| 2401 | * acceptEither result completes normally after normal completion |
| 2402 | * of either source |
| 2403 | */ |
| 2404 | public void testAcceptEither_normalCompletion() { |
| 2405 | for (ExecutionMode m : ExecutionMode.values()) |
| 2406 | for (Integer v1 : new Integer[] { 1, null }) |
| 2407 | for (Integer v2 : new Integer[] { 2, null }) |
| 2408 | { |
| 2409 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2410 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2411 | final NoopConsumer[] rs = new NoopConsumer[6]; |
| 2412 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 2413 | |
| 2414 | final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]); |
| 2415 | final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]); |
| 2416 | checkIncomplete(h0); |
| 2417 | checkIncomplete(h1); |
| 2418 | rs[0].assertNotInvoked(); |
| 2419 | rs[1].assertNotInvoked(); |
| 2420 | f.complete(v1); |
| 2421 | checkCompletedNormally(h0, null); |
| 2422 | checkCompletedNormally(h1, null); |
| 2423 | rs[0].assertValue(v1); |
| 2424 | rs[1].assertValue(v1); |
| 2425 | final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
| 2426 | final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
| 2427 | checkCompletedNormally(h2, null); |
| 2428 | checkCompletedNormally(h3, null); |
| 2429 | rs[2].assertValue(v1); |
| 2430 | rs[3].assertValue(v1); |
| 2431 | g.complete(v2); |
| 2432 | |
| 2433 | // unspecified behavior - both source completions available |
| 2434 | final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]); |
| 2435 | final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]); |
| 2436 | checkCompletedNormally(h4, null); |
| 2437 | checkCompletedNormally(h5, null); |
| 2438 | assertTrue(Objects.equals(v1, rs[4].value) || |
| 2439 | Objects.equals(v2, rs[4].value)); |
| 2440 | assertTrue(Objects.equals(v1, rs[5].value) || |
| 2441 | Objects.equals(v2, rs[5].value)); |
| 2442 | |
| 2443 | checkCompletedNormally(f, v1); |
| 2444 | checkCompletedNormally(g, v2); |
| 2445 | checkCompletedNormally(h0, null); |
| 2446 | checkCompletedNormally(h1, null); |
| 2447 | checkCompletedNormally(h2, null); |
| 2448 | checkCompletedNormally(h3, null); |
| 2449 | for (int i = 0; i < 4; i++) rs[i].assertValue(v1); |
| 2450 | }} |
| 2451 | |
| 2452 | /** |
| 2453 | * acceptEither result completes exceptionally after exceptional |
| 2454 | * completion of either source |
| 2455 | */ |
| 2456 | public void testAcceptEither_exceptionalCompletion() { |
| 2457 | for (ExecutionMode m : ExecutionMode.values()) |
| 2458 | for (Integer v1 : new Integer[] { 1, null }) |
| 2459 | { |
| 2460 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2461 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2462 | final CFException ex = new CFException(); |
| 2463 | final NoopConsumer[] rs = new NoopConsumer[6]; |
| 2464 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 2465 | |
| 2466 | final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]); |
| 2467 | final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]); |
| 2468 | checkIncomplete(h0); |
| 2469 | checkIncomplete(h1); |
| 2470 | rs[0].assertNotInvoked(); |
| 2471 | rs[1].assertNotInvoked(); |
| 2472 | f.completeExceptionally(ex); |
| 2473 | checkCompletedWithWrappedException(h0, ex); |
| 2474 | checkCompletedWithWrappedException(h1, ex); |
| 2475 | final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
| 2476 | final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
| 2477 | checkCompletedWithWrappedException(h2, ex); |
| 2478 | checkCompletedWithWrappedException(h3, ex); |
| 2479 | |
| 2480 | g.complete(v1); |
| 2481 | |
| 2482 | // unspecified behavior - both source completions available |
| 2483 | final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]); |
| 2484 | final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]); |
| 2485 | try { |
| 2486 | assertNull(h4.join()); |
| 2487 | rs[4].assertValue(v1); |
| 2488 | } catch (CompletionException ok) { |
| 2489 | checkCompletedWithWrappedException(h4, ex); |
| 2490 | rs[4].assertNotInvoked(); |
| 2491 | } |
| 2492 | try { |
| 2493 | assertNull(h5.join()); |
| 2494 | rs[5].assertValue(v1); |
| 2495 | } catch (CompletionException ok) { |
| 2496 | checkCompletedWithWrappedException(h5, ex); |
| 2497 | rs[5].assertNotInvoked(); |
| 2498 | } |
| 2499 | |
| 2500 | checkCompletedExceptionally(f, ex); |
| 2501 | checkCompletedNormally(g, v1); |
| 2502 | checkCompletedWithWrappedException(h0, ex); |
| 2503 | checkCompletedWithWrappedException(h1, ex); |
| 2504 | checkCompletedWithWrappedException(h2, ex); |
| 2505 | checkCompletedWithWrappedException(h3, ex); |
| 2506 | checkCompletedWithWrappedException(h4, ex); |
| 2507 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2508 | }} |
| 2509 | |
| 2510 | public void testAcceptEither_exceptionalCompletion2() { |
| 2511 | for (ExecutionMode m : ExecutionMode.values()) |
| 2512 | for (boolean fFirst : new boolean[] { true, false }) |
| 2513 | for (Integer v1 : new Integer[] { 1, null }) |
| 2514 | { |
| 2515 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2516 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2517 | final CFException ex = new CFException(); |
| 2518 | final NoopConsumer[] rs = new NoopConsumer[6]; |
| 2519 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 2520 | |
| 2521 | final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]); |
| 2522 | final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]); |
| 2523 | assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2524 | assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2525 | final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
| 2526 | final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
| 2527 | |
| 2528 | // unspecified behavior - both source completions available |
| 2529 | try { |
| 2530 | assertEquals(null, h0.join()); |
| 2531 | rs[0].assertValue(v1); |
| 2532 | } catch (CompletionException ok) { |
| 2533 | checkCompletedWithWrappedException(h0, ex); |
| 2534 | rs[0].assertNotInvoked(); |
| 2535 | } |
| 2536 | try { |
| 2537 | assertEquals(null, h1.join()); |
| 2538 | rs[1].assertValue(v1); |
| 2539 | } catch (CompletionException ok) { |
| 2540 | checkCompletedWithWrappedException(h1, ex); |
| 2541 | rs[1].assertNotInvoked(); |
| 2542 | } |
| 2543 | try { |
| 2544 | assertEquals(null, h2.join()); |
| 2545 | rs[2].assertValue(v1); |
| 2546 | } catch (CompletionException ok) { |
| 2547 | checkCompletedWithWrappedException(h2, ex); |
| 2548 | rs[2].assertNotInvoked(); |
| 2549 | } |
| 2550 | try { |
| 2551 | assertEquals(null, h3.join()); |
| 2552 | rs[3].assertValue(v1); |
| 2553 | } catch (CompletionException ok) { |
| 2554 | checkCompletedWithWrappedException(h3, ex); |
| 2555 | rs[3].assertNotInvoked(); |
| 2556 | } |
| 2557 | |
| 2558 | checkCompletedNormally(f, v1); |
| 2559 | checkCompletedExceptionally(g, ex); |
| 2560 | }} |
| 2561 | |
| 2562 | /** |
| 2563 | * acceptEither result completes exceptionally if either source cancelled |
| 2564 | */ |
| 2565 | public void testAcceptEither_sourceCancelled() { |
| 2566 | for (ExecutionMode m : ExecutionMode.values()) |
| 2567 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2568 | for (Integer v1 : new Integer[] { 1, null }) |
| 2569 | { |
| 2570 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2571 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2572 | final NoopConsumer[] rs = new NoopConsumer[6]; |
| 2573 | for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m); |
| 2574 | |
| 2575 | final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]); |
| 2576 | final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]); |
| 2577 | checkIncomplete(h0); |
| 2578 | checkIncomplete(h1); |
| 2579 | rs[0].assertNotInvoked(); |
| 2580 | rs[1].assertNotInvoked(); |
| 2581 | f.cancel(mayInterruptIfRunning); |
| 2582 | checkCompletedWithWrappedCancellationException(h0); |
| 2583 | checkCompletedWithWrappedCancellationException(h1); |
| 2584 | final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
| 2585 | final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
| 2586 | checkCompletedWithWrappedCancellationException(h2); |
| 2587 | checkCompletedWithWrappedCancellationException(h3); |
| 2588 | |
| 2589 | g.complete(v1); |
| 2590 | |
| 2591 | // unspecified behavior - both source completions available |
| 2592 | final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]); |
| 2593 | final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]); |
| 2594 | try { |
| 2595 | assertNull(h4.join()); |
| 2596 | rs[4].assertValue(v1); |
| 2597 | } catch (CompletionException ok) { |
| 2598 | checkCompletedWithWrappedCancellationException(h4); |
| 2599 | rs[4].assertNotInvoked(); |
| 2600 | } |
| 2601 | try { |
| 2602 | assertNull(h5.join()); |
| 2603 | rs[5].assertValue(v1); |
| 2604 | } catch (CompletionException ok) { |
| 2605 | checkCompletedWithWrappedCancellationException(h5); |
| 2606 | rs[5].assertNotInvoked(); |
| 2607 | } |
| 2608 | |
| 2609 | checkCancelled(f); |
| 2610 | checkCompletedNormally(g, v1); |
| 2611 | checkCompletedWithWrappedCancellationException(h0); |
| 2612 | checkCompletedWithWrappedCancellationException(h1); |
| 2613 | checkCompletedWithWrappedCancellationException(h2); |
| 2614 | checkCompletedWithWrappedCancellationException(h3); |
| 2615 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2616 | }} |
| 2617 | |
| 2618 | /** |
| 2619 | * acceptEither result completes exceptionally if action does |
| 2620 | */ |
| 2621 | public void testAcceptEither_actionFailed() { |
| 2622 | for (ExecutionMode m : ExecutionMode.values()) |
| 2623 | for (Integer v1 : new Integer[] { 1, null }) |
| 2624 | for (Integer v2 : new Integer[] { 2, null }) |
| 2625 | { |
| 2626 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2627 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2628 | final FailingConsumer[] rs = new FailingConsumer[6]; |
| 2629 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m); |
| 2630 | |
| 2631 | final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]); |
| 2632 | final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]); |
| 2633 | f.complete(v1); |
| 2634 | final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
| 2635 | final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
| 2636 | checkCompletedWithWrappedCFException(h0); |
| 2637 | checkCompletedWithWrappedCFException(h1); |
| 2638 | checkCompletedWithWrappedCFException(h2); |
| 2639 | checkCompletedWithWrappedCFException(h3); |
| 2640 | for (int i = 0; i < 4; i++) rs[i].assertValue(v1); |
| 2641 | |
| 2642 | g.complete(v2); |
| 2643 | |
| 2644 | // unspecified behavior - both source completions available |
| 2645 | final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]); |
| 2646 | final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]); |
| 2647 | |
| 2648 | checkCompletedWithWrappedCFException(h4); |
| 2649 | assertTrue(Objects.equals(v1, rs[4].value) || |
| 2650 | Objects.equals(v2, rs[4].value)); |
| 2651 | checkCompletedWithWrappedCFException(h5); |
| 2652 | assertTrue(Objects.equals(v1, rs[5].value) || |
| 2653 | Objects.equals(v2, rs[5].value)); |
| 2654 | |
| 2655 | checkCompletedNormally(f, v1); |
| 2656 | checkCompletedNormally(g, v2); |
| 2657 | }} |
| 2658 | |
| 2659 | /** |
| 2660 | * runAfterEither result completes normally after normal completion |
| 2661 | * of either source |
| 2662 | */ |
| 2663 | public void testRunAfterEither_normalCompletion() { |
| 2664 | for (ExecutionMode m : ExecutionMode.values()) |
| 2665 | for (Integer v1 : new Integer[] { 1, null }) |
| 2666 | for (Integer v2 : new Integer[] { 2, null }) |
| 2667 | { |
| 2668 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2669 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2670 | final Noop[] rs = new Noop[6]; |
| 2671 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 2672 | |
| 2673 | final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]); |
| 2674 | final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]); |
| 2675 | checkIncomplete(h0); |
| 2676 | checkIncomplete(h1); |
| 2677 | rs[0].assertNotInvoked(); |
| 2678 | rs[1].assertNotInvoked(); |
| 2679 | f.complete(v1); |
| 2680 | checkCompletedNormally(h0, null); |
| 2681 | checkCompletedNormally(h1, null); |
| 2682 | rs[0].assertInvoked(); |
| 2683 | rs[1].assertInvoked(); |
| 2684 | final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
| 2685 | final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
| 2686 | checkCompletedNormally(h2, null); |
| 2687 | checkCompletedNormally(h3, null); |
| 2688 | rs[2].assertInvoked(); |
| 2689 | rs[3].assertInvoked(); |
| 2690 | |
| 2691 | g.complete(v2); |
| 2692 | |
| 2693 | final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]); |
| 2694 | final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]); |
| 2695 | |
| 2696 | checkCompletedNormally(f, v1); |
| 2697 | checkCompletedNormally(g, v2); |
| 2698 | checkCompletedNormally(h0, null); |
| 2699 | checkCompletedNormally(h1, null); |
| 2700 | checkCompletedNormally(h2, null); |
| 2701 | checkCompletedNormally(h3, null); |
| 2702 | checkCompletedNormally(h4, null); |
| 2703 | checkCompletedNormally(h5, null); |
| 2704 | for (int i = 0; i < 6; i++) rs[i].assertInvoked(); |
| 2705 | }} |
| 2706 | |
| 2707 | /** |
| 2708 | * runAfterEither result completes exceptionally after exceptional |
| 2709 | * completion of either source |
| 2710 | */ |
| 2711 | public void testRunAfterEither_exceptionalCompletion() { |
| 2712 | for (ExecutionMode m : ExecutionMode.values()) |
| 2713 | for (Integer v1 : new Integer[] { 1, null }) |
| 2714 | { |
| 2715 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2716 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2717 | final CFException ex = new CFException(); |
| 2718 | final Noop[] rs = new Noop[6]; |
| 2719 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 2720 | |
| 2721 | final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]); |
| 2722 | final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]); |
| 2723 | checkIncomplete(h0); |
| 2724 | checkIncomplete(h1); |
| 2725 | rs[0].assertNotInvoked(); |
| 2726 | rs[1].assertNotInvoked(); |
| 2727 | assertTrue(f.completeExceptionally(ex)); |
| 2728 | checkCompletedWithWrappedException(h0, ex); |
| 2729 | checkCompletedWithWrappedException(h1, ex); |
| 2730 | final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
| 2731 | final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
| 2732 | checkCompletedWithWrappedException(h2, ex); |
| 2733 | checkCompletedWithWrappedException(h3, ex); |
| 2734 | |
| 2735 | assertTrue(g.complete(v1)); |
| 2736 | |
| 2737 | // unspecified behavior - both source completions available |
| 2738 | final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]); |
| 2739 | final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]); |
| 2740 | try { |
| 2741 | assertNull(h4.join()); |
| 2742 | rs[4].assertInvoked(); |
| 2743 | } catch (CompletionException ok) { |
| 2744 | checkCompletedWithWrappedException(h4, ex); |
| 2745 | rs[4].assertNotInvoked(); |
| 2746 | } |
| 2747 | try { |
| 2748 | assertNull(h5.join()); |
| 2749 | rs[5].assertInvoked(); |
| 2750 | } catch (CompletionException ok) { |
| 2751 | checkCompletedWithWrappedException(h5, ex); |
| 2752 | rs[5].assertNotInvoked(); |
| 2753 | } |
| 2754 | |
| 2755 | checkCompletedExceptionally(f, ex); |
| 2756 | checkCompletedNormally(g, v1); |
| 2757 | checkCompletedWithWrappedException(h0, ex); |
| 2758 | checkCompletedWithWrappedException(h1, ex); |
| 2759 | checkCompletedWithWrappedException(h2, ex); |
| 2760 | checkCompletedWithWrappedException(h3, ex); |
| 2761 | checkCompletedWithWrappedException(h4, ex); |
| 2762 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2763 | }} |
| 2764 | |
| 2765 | public void testRunAfterEither_exceptionalCompletion2() { |
| 2766 | for (ExecutionMode m : ExecutionMode.values()) |
| 2767 | for (boolean fFirst : new boolean[] { true, false }) |
| 2768 | for (Integer v1 : new Integer[] { 1, null }) |
| 2769 | { |
| 2770 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2771 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2772 | final CFException ex = new CFException(); |
| 2773 | final Noop[] rs = new Noop[6]; |
| 2774 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 2775 | |
| 2776 | final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]); |
| 2777 | final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]); |
| 2778 | assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2779 | assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex)); |
| 2780 | final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
| 2781 | final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
| 2782 | |
| 2783 | // unspecified behavior - both source completions available |
| 2784 | try { |
| 2785 | assertEquals(null, h0.join()); |
| 2786 | rs[0].assertInvoked(); |
| 2787 | } catch (CompletionException ok) { |
| 2788 | checkCompletedWithWrappedException(h0, ex); |
| 2789 | rs[0].assertNotInvoked(); |
| 2790 | } |
| 2791 | try { |
| 2792 | assertEquals(null, h1.join()); |
| 2793 | rs[1].assertInvoked(); |
| 2794 | } catch (CompletionException ok) { |
| 2795 | checkCompletedWithWrappedException(h1, ex); |
| 2796 | rs[1].assertNotInvoked(); |
| 2797 | } |
| 2798 | try { |
| 2799 | assertEquals(null, h2.join()); |
| 2800 | rs[2].assertInvoked(); |
| 2801 | } catch (CompletionException ok) { |
| 2802 | checkCompletedWithWrappedException(h2, ex); |
| 2803 | rs[2].assertNotInvoked(); |
| 2804 | } |
| 2805 | try { |
| 2806 | assertEquals(null, h3.join()); |
| 2807 | rs[3].assertInvoked(); |
| 2808 | } catch (CompletionException ok) { |
| 2809 | checkCompletedWithWrappedException(h3, ex); |
| 2810 | rs[3].assertNotInvoked(); |
| 2811 | } |
| 2812 | |
| 2813 | checkCompletedNormally(f, v1); |
| 2814 | checkCompletedExceptionally(g, ex); |
| 2815 | }} |
| 2816 | |
| 2817 | /** |
| 2818 | * runAfterEither result completes exceptionally if either source cancelled |
| 2819 | */ |
| 2820 | public void testRunAfterEither_sourceCancelled() { |
| 2821 | for (ExecutionMode m : ExecutionMode.values()) |
| 2822 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2823 | for (Integer v1 : new Integer[] { 1, null }) |
| 2824 | { |
| 2825 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2826 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2827 | final Noop[] rs = new Noop[6]; |
| 2828 | for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m); |
| 2829 | |
| 2830 | final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]); |
| 2831 | final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]); |
| 2832 | checkIncomplete(h0); |
| 2833 | checkIncomplete(h1); |
| 2834 | rs[0].assertNotInvoked(); |
| 2835 | rs[1].assertNotInvoked(); |
| 2836 | f.cancel(mayInterruptIfRunning); |
| 2837 | checkCompletedWithWrappedCancellationException(h0); |
| 2838 | checkCompletedWithWrappedCancellationException(h1); |
| 2839 | final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
| 2840 | final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
| 2841 | checkCompletedWithWrappedCancellationException(h2); |
| 2842 | checkCompletedWithWrappedCancellationException(h3); |
| 2843 | |
| 2844 | assertTrue(g.complete(v1)); |
| 2845 | |
| 2846 | // unspecified behavior - both source completions available |
| 2847 | final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]); |
| 2848 | final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]); |
| 2849 | try { |
| 2850 | assertNull(h4.join()); |
| 2851 | rs[4].assertInvoked(); |
| 2852 | } catch (CompletionException ok) { |
| 2853 | checkCompletedWithWrappedCancellationException(h4); |
| 2854 | rs[4].assertNotInvoked(); |
| 2855 | } |
| 2856 | try { |
| 2857 | assertNull(h5.join()); |
| 2858 | rs[5].assertInvoked(); |
| 2859 | } catch (CompletionException ok) { |
| 2860 | checkCompletedWithWrappedCancellationException(h5); |
| 2861 | rs[5].assertNotInvoked(); |
| 2862 | } |
| 2863 | |
| 2864 | checkCancelled(f); |
| 2865 | checkCompletedNormally(g, v1); |
| 2866 | checkCompletedWithWrappedCancellationException(h0); |
| 2867 | checkCompletedWithWrappedCancellationException(h1); |
| 2868 | checkCompletedWithWrappedCancellationException(h2); |
| 2869 | checkCompletedWithWrappedCancellationException(h3); |
| 2870 | for (int i = 0; i < 4; i++) rs[i].assertNotInvoked(); |
| 2871 | }} |
| 2872 | |
| 2873 | /** |
| 2874 | * runAfterEither result completes exceptionally if action does |
| 2875 | */ |
| 2876 | public void testRunAfterEither_actionFailed() { |
| 2877 | for (ExecutionMode m : ExecutionMode.values()) |
| 2878 | for (Integer v1 : new Integer[] { 1, null }) |
| 2879 | for (Integer v2 : new Integer[] { 2, null }) |
| 2880 | { |
| 2881 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2882 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2883 | final FailingRunnable[] rs = new FailingRunnable[6]; |
| 2884 | for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m); |
| 2885 | |
| 2886 | final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]); |
| 2887 | final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]); |
| 2888 | assertTrue(f.complete(v1)); |
| 2889 | final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
| 2890 | final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
| 2891 | checkCompletedWithWrappedCFException(h0); |
| 2892 | checkCompletedWithWrappedCFException(h1); |
| 2893 | checkCompletedWithWrappedCFException(h2); |
| 2894 | checkCompletedWithWrappedCFException(h3); |
| 2895 | for (int i = 0; i < 4; i++) rs[i].assertInvoked(); |
| 2896 | assertTrue(g.complete(v2)); |
| 2897 | final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]); |
| 2898 | final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]); |
| 2899 | checkCompletedWithWrappedCFException(h4); |
| 2900 | checkCompletedWithWrappedCFException(h5); |
| 2901 | |
| 2902 | checkCompletedNormally(f, v1); |
| 2903 | checkCompletedNormally(g, v2); |
| 2904 | for (int i = 0; i < 6; i++) rs[i].assertInvoked(); |
| 2905 | }} |
| 2906 | |
| 2907 | /** |
| 2908 | * thenCompose result completes normally after normal completion of source |
| 2909 | */ |
| 2910 | public void testThenCompose_normalCompletion() { |
| 2911 | for (ExecutionMode m : ExecutionMode.values()) |
| 2912 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 2913 | for (Integer v1 : new Integer[] { 1, null }) |
| 2914 | { |
| 2915 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2916 | final CompletableFutureInc r = new CompletableFutureInc(m); |
| 2917 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 2918 | final CompletableFuture<Integer> g = m.thenCompose(f, r); |
| 2919 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 2920 | |
| 2921 | checkCompletedNormally(g, inc(v1)); |
| 2922 | checkCompletedNormally(f, v1); |
| 2923 | r.assertValue(v1); |
| 2924 | }} |
| 2925 | |
| 2926 | /** |
| 2927 | * thenCompose result completes exceptionally after exceptional |
| 2928 | * completion of source |
| 2929 | */ |
| 2930 | public void testThenCompose_exceptionalCompletion() { |
| 2931 | for (ExecutionMode m : ExecutionMode.values()) |
| 2932 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 2933 | { |
| 2934 | final CFException ex = new CFException(); |
| 2935 | final CompletableFutureInc r = new CompletableFutureInc(m); |
| 2936 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2937 | if (!createIncomplete) f.completeExceptionally(ex); |
| 2938 | final CompletableFuture<Integer> g = m.thenCompose(f, r); |
| 2939 | if (createIncomplete) f.completeExceptionally(ex); |
| 2940 | |
| 2941 | checkCompletedWithWrappedException(g, ex); |
| 2942 | checkCompletedExceptionally(f, ex); |
| 2943 | r.assertNotInvoked(); |
| 2944 | }} |
| 2945 | |
| 2946 | /** |
| 2947 | * thenCompose result completes exceptionally if action does |
| 2948 | */ |
| 2949 | public void testThenCompose_actionFailed() { |
| 2950 | for (ExecutionMode m : ExecutionMode.values()) |
| 2951 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 2952 | for (Integer v1 : new Integer[] { 1, null }) |
| 2953 | { |
| 2954 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2955 | final FailingCompletableFutureFunction r |
| 2956 | = new FailingCompletableFutureFunction(m); |
| 2957 | if (!createIncomplete) assertTrue(f.complete(v1)); |
| 2958 | final CompletableFuture<Integer> g = m.thenCompose(f, r); |
| 2959 | if (createIncomplete) assertTrue(f.complete(v1)); |
| 2960 | |
| 2961 | checkCompletedWithWrappedCFException(g); |
| 2962 | checkCompletedNormally(f, v1); |
| 2963 | }} |
| 2964 | |
| 2965 | /** |
| 2966 | * thenCompose result completes exceptionally if source cancelled |
| 2967 | */ |
| 2968 | public void testThenCompose_sourceCancelled() { |
| 2969 | for (ExecutionMode m : ExecutionMode.values()) |
| 2970 | for (boolean createIncomplete : new boolean[] { true, false }) |
| 2971 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 2972 | { |
| 2973 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2974 | final CompletableFutureInc r = new CompletableFutureInc(m); |
| 2975 | if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
| 2976 | final CompletableFuture<Integer> g = m.thenCompose(f, r); |
| 2977 | if (createIncomplete) { |
| 2978 | checkIncomplete(g); |
| 2979 | assertTrue(f.cancel(mayInterruptIfRunning)); |
| 2980 | } |
| 2981 | |
| 2982 | checkCompletedWithWrappedCancellationException(g); |
| 2983 | checkCancelled(f); |
| 2984 | }} |
| 2985 | |
| 2986 | /** |
| 2987 | * thenCompose result completes exceptionally if the result of the action does |
| 2988 | */ |
| 2989 | public void testThenCompose_actionReturnsFailingFuture() { |
| 2990 | for (ExecutionMode m : ExecutionMode.values()) |
| 2991 | for (int order = 0; order < 6; order++) |
| 2992 | for (Integer v1 : new Integer[] { 1, null }) |
| 2993 | { |
| 2994 | final CFException ex = new CFException(); |
| 2995 | final CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 2996 | final CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 2997 | final CompletableFuture<Integer> h; |
| 2998 | // Test all permutations of orders |
| 2999 | switch (order) { |
| 3000 | case 0: |
| 3001 | assertTrue(f.complete(v1)); |
| 3002 | assertTrue(g.completeExceptionally(ex)); |
| 3003 | h = m.thenCompose(f, (x -> g)); |
| 3004 | break; |
| 3005 | case 1: |
| 3006 | assertTrue(f.complete(v1)); |
| 3007 | h = m.thenCompose(f, (x -> g)); |
| 3008 | assertTrue(g.completeExceptionally(ex)); |
| 3009 | break; |
| 3010 | case 2: |
| 3011 | assertTrue(g.completeExceptionally(ex)); |
| 3012 | assertTrue(f.complete(v1)); |
| 3013 | h = m.thenCompose(f, (x -> g)); |
| 3014 | break; |
| 3015 | case 3: |
| 3016 | assertTrue(g.completeExceptionally(ex)); |
| 3017 | h = m.thenCompose(f, (x -> g)); |
| 3018 | assertTrue(f.complete(v1)); |
| 3019 | break; |
| 3020 | case 4: |
| 3021 | h = m.thenCompose(f, (x -> g)); |
| 3022 | assertTrue(f.complete(v1)); |
| 3023 | assertTrue(g.completeExceptionally(ex)); |
| 3024 | break; |
| 3025 | case 5: |
| 3026 | h = m.thenCompose(f, (x -> g)); |
| 3027 | assertTrue(f.complete(v1)); |
| 3028 | assertTrue(g.completeExceptionally(ex)); |
| 3029 | break; |
| 3030 | default: throw new AssertionError(); |
| 3031 | } |
| 3032 | |
| 3033 | checkCompletedExceptionally(g, ex); |
| 3034 | checkCompletedWithWrappedException(h, ex); |
| 3035 | checkCompletedNormally(f, v1); |
| 3036 | }} |
| 3037 | |
| 3038 | // other static methods |
| 3039 | |
| 3040 | /** |
| 3041 | * allOf(no component futures) returns a future completed normally |
| 3042 | * with the value null |
| 3043 | */ |
| 3044 | public void testAllOf_empty() throws Exception { |
| 3045 | CompletableFuture<Void> f = CompletableFuture.allOf(); |
| 3046 | checkCompletedNormally(f, null); |
| 3047 | } |
| 3048 | |
| 3049 | /** |
| 3050 | * allOf returns a future completed normally with the value null |
| 3051 | * when all components complete normally |
| 3052 | */ |
| 3053 | public void testAllOf_normal() throws Exception { |
| 3054 | for (int k = 1; k < 10; k++) { |
| 3055 | CompletableFuture<Integer>[] fs |
| 3056 | = (CompletableFuture<Integer>[]) new CompletableFuture[k]; |
| 3057 | for (int i = 0; i < k; i++) |
| 3058 | fs[i] = new CompletableFuture<>(); |
| 3059 | CompletableFuture<Void> f = CompletableFuture.allOf(fs); |
| 3060 | for (int i = 0; i < k; i++) { |
| 3061 | checkIncomplete(f); |
| 3062 | checkIncomplete(CompletableFuture.allOf(fs)); |
| 3063 | fs[i].complete(one); |
| 3064 | } |
| 3065 | checkCompletedNormally(f, null); |
| 3066 | checkCompletedNormally(CompletableFuture.allOf(fs), null); |
| 3067 | } |
| 3068 | } |
| 3069 | |
| 3070 | public void testAllOf_backwards() throws Exception { |
| 3071 | for (int k = 1; k < 10; k++) { |
| 3072 | CompletableFuture<Integer>[] fs |
| 3073 | = (CompletableFuture<Integer>[]) new CompletableFuture[k]; |
| 3074 | for (int i = 0; i < k; i++) |
| 3075 | fs[i] = new CompletableFuture<>(); |
| 3076 | CompletableFuture<Void> f = CompletableFuture.allOf(fs); |
| 3077 | for (int i = k - 1; i >= 0; i--) { |
| 3078 | checkIncomplete(f); |
| 3079 | checkIncomplete(CompletableFuture.allOf(fs)); |
| 3080 | fs[i].complete(one); |
| 3081 | } |
| 3082 | checkCompletedNormally(f, null); |
| 3083 | checkCompletedNormally(CompletableFuture.allOf(fs), null); |
| 3084 | } |
| 3085 | } |
| 3086 | |
| 3087 | public void testAllOf_exceptional() throws Exception { |
| 3088 | for (int k = 1; k < 10; k++) { |
| 3089 | CompletableFuture<Integer>[] fs |
| 3090 | = (CompletableFuture<Integer>[]) new CompletableFuture[k]; |
| 3091 | CFException ex = new CFException(); |
| 3092 | for (int i = 0; i < k; i++) |
| 3093 | fs[i] = new CompletableFuture<>(); |
| 3094 | CompletableFuture<Void> f = CompletableFuture.allOf(fs); |
| 3095 | for (int i = 0; i < k; i++) { |
| 3096 | checkIncomplete(f); |
| 3097 | checkIncomplete(CompletableFuture.allOf(fs)); |
| 3098 | if (i != k / 2) { |
| 3099 | fs[i].complete(i); |
| 3100 | checkCompletedNormally(fs[i], i); |
| 3101 | } else { |
| 3102 | fs[i].completeExceptionally(ex); |
| 3103 | checkCompletedExceptionally(fs[i], ex); |
| 3104 | } |
| 3105 | } |
| 3106 | checkCompletedWithWrappedException(f, ex); |
| 3107 | checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex); |
| 3108 | } |
| 3109 | } |
| 3110 | |
| 3111 | /** |
| 3112 | * anyOf(no component futures) returns an incomplete future |
| 3113 | */ |
| 3114 | public void testAnyOf_empty() throws Exception { |
| 3115 | for (Integer v1 : new Integer[] { 1, null }) |
| 3116 | { |
| 3117 | CompletableFuture<Object> f = CompletableFuture.anyOf(); |
| 3118 | checkIncomplete(f); |
| 3119 | |
| 3120 | f.complete(v1); |
| 3121 | checkCompletedNormally(f, v1); |
| 3122 | }} |
| 3123 | |
| 3124 | /** |
| 3125 | * anyOf returns a future completed normally with a value when |
| 3126 | * a component future does |
| 3127 | */ |
| 3128 | public void testAnyOf_normal() throws Exception { |
| 3129 | for (int k = 0; k < 10; k++) { |
| 3130 | CompletableFuture[] fs = new CompletableFuture[k]; |
| 3131 | for (int i = 0; i < k; i++) |
| 3132 | fs[i] = new CompletableFuture<>(); |
| 3133 | CompletableFuture<Object> f = CompletableFuture.anyOf(fs); |
| 3134 | checkIncomplete(f); |
| 3135 | for (int i = 0; i < k; i++) { |
| 3136 | fs[i].complete(i); |
| 3137 | checkCompletedNormally(f, 0); |
| 3138 | int x = (int) CompletableFuture.anyOf(fs).join(); |
| 3139 | assertTrue(0 <= x && x <= i); |
| 3140 | } |
| 3141 | } |
| 3142 | } |
| 3143 | public void testAnyOf_normal_backwards() throws Exception { |
| 3144 | for (int k = 0; k < 10; k++) { |
| 3145 | CompletableFuture[] fs = new CompletableFuture[k]; |
| 3146 | for (int i = 0; i < k; i++) |
| 3147 | fs[i] = new CompletableFuture<>(); |
| 3148 | CompletableFuture<Object> f = CompletableFuture.anyOf(fs); |
| 3149 | checkIncomplete(f); |
| 3150 | for (int i = k - 1; i >= 0; i--) { |
| 3151 | fs[i].complete(i); |
| 3152 | checkCompletedNormally(f, k - 1); |
| 3153 | int x = (int) CompletableFuture.anyOf(fs).join(); |
| 3154 | assertTrue(i <= x && x <= k - 1); |
| 3155 | } |
| 3156 | } |
| 3157 | } |
| 3158 | |
| 3159 | /** |
| 3160 | * anyOf result completes exceptionally when any component does. |
| 3161 | */ |
| 3162 | public void testAnyOf_exceptional() throws Exception { |
| 3163 | for (int k = 0; k < 10; k++) { |
| 3164 | CompletableFuture[] fs = new CompletableFuture[k]; |
| 3165 | CFException[] exs = new CFException[k]; |
| 3166 | for (int i = 0; i < k; i++) { |
| 3167 | fs[i] = new CompletableFuture<>(); |
| 3168 | exs[i] = new CFException(); |
| 3169 | } |
| 3170 | CompletableFuture<Object> f = CompletableFuture.anyOf(fs); |
| 3171 | checkIncomplete(f); |
| 3172 | for (int i = 0; i < k; i++) { |
| 3173 | fs[i].completeExceptionally(exs[i]); |
| 3174 | checkCompletedWithWrappedException(f, exs[0]); |
| 3175 | checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs)); |
| 3176 | } |
| 3177 | } |
| 3178 | } |
| 3179 | |
| 3180 | public void testAnyOf_exceptional_backwards() throws Exception { |
| 3181 | for (int k = 0; k < 10; k++) { |
| 3182 | CompletableFuture[] fs = new CompletableFuture[k]; |
| 3183 | CFException[] exs = new CFException[k]; |
| 3184 | for (int i = 0; i < k; i++) { |
| 3185 | fs[i] = new CompletableFuture<>(); |
| 3186 | exs[i] = new CFException(); |
| 3187 | } |
| 3188 | CompletableFuture<Object> f = CompletableFuture.anyOf(fs); |
| 3189 | checkIncomplete(f); |
| 3190 | for (int i = k - 1; i >= 0; i--) { |
| 3191 | fs[i].completeExceptionally(exs[i]); |
| 3192 | checkCompletedWithWrappedException(f, exs[k - 1]); |
| 3193 | checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs)); |
| 3194 | } |
| 3195 | } |
| 3196 | } |
| 3197 | |
| 3198 | /** |
| 3199 | * Completion methods throw NullPointerException with null arguments |
| 3200 | */ |
| 3201 | public void testNPE() { |
| 3202 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3203 | CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 3204 | CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null; |
| 3205 | ThreadExecutor exec = new ThreadExecutor(); |
| 3206 | |
| 3207 | Runnable[] throwingActions = { |
| 3208 | () -> CompletableFuture.supplyAsync(null), |
| 3209 | () -> CompletableFuture.supplyAsync(null, exec), |
| 3210 | () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null), |
| 3211 | |
| 3212 | () -> CompletableFuture.runAsync(null), |
| 3213 | () -> CompletableFuture.runAsync(null, exec), |
| 3214 | () -> CompletableFuture.runAsync(() -> {}, null), |
| 3215 | |
| 3216 | () -> f.completeExceptionally(null), |
| 3217 | |
| 3218 | () -> f.thenApply(null), |
| 3219 | () -> f.thenApplyAsync(null), |
| 3220 | () -> f.thenApplyAsync((x) -> x, null), |
| 3221 | () -> f.thenApplyAsync(null, exec), |
| 3222 | |
| 3223 | () -> f.thenAccept(null), |
| 3224 | () -> f.thenAcceptAsync(null), |
| 3225 | () -> f.thenAcceptAsync((x) -> {} , null), |
| 3226 | () -> f.thenAcceptAsync(null, exec), |
| 3227 | |
| 3228 | () -> f.thenRun(null), |
| 3229 | () -> f.thenRunAsync(null), |
| 3230 | () -> f.thenRunAsync(() -> {} , null), |
| 3231 | () -> f.thenRunAsync(null, exec), |
| 3232 | |
| 3233 | () -> f.thenCombine(g, null), |
| 3234 | () -> f.thenCombineAsync(g, null), |
| 3235 | () -> f.thenCombineAsync(g, null, exec), |
| 3236 | () -> f.thenCombine(nullFuture, (x, y) -> x), |
| 3237 | () -> f.thenCombineAsync(nullFuture, (x, y) -> x), |
| 3238 | () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec), |
| 3239 | () -> f.thenCombineAsync(g, (x, y) -> x, null), |
| 3240 | |
| 3241 | () -> f.thenAcceptBoth(g, null), |
| 3242 | () -> f.thenAcceptBothAsync(g, null), |
| 3243 | () -> f.thenAcceptBothAsync(g, null, exec), |
| 3244 | () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}), |
| 3245 | () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}), |
| 3246 | () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec), |
| 3247 | () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null), |
| 3248 | |
| 3249 | () -> f.runAfterBoth(g, null), |
| 3250 | () -> f.runAfterBothAsync(g, null), |
| 3251 | () -> f.runAfterBothAsync(g, null, exec), |
| 3252 | () -> f.runAfterBoth(nullFuture, () -> {}), |
| 3253 | () -> f.runAfterBothAsync(nullFuture, () -> {}), |
| 3254 | () -> f.runAfterBothAsync(nullFuture, () -> {}, exec), |
| 3255 | () -> f.runAfterBothAsync(g, () -> {}, null), |
| 3256 | |
| 3257 | () -> f.applyToEither(g, null), |
| 3258 | () -> f.applyToEitherAsync(g, null), |
| 3259 | () -> f.applyToEitherAsync(g, null, exec), |
| 3260 | () -> f.applyToEither(nullFuture, (x) -> x), |
| 3261 | () -> f.applyToEitherAsync(nullFuture, (x) -> x), |
| 3262 | () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec), |
| 3263 | () -> f.applyToEitherAsync(g, (x) -> x, null), |
| 3264 | |
| 3265 | () -> f.acceptEither(g, null), |
| 3266 | () -> f.acceptEitherAsync(g, null), |
| 3267 | () -> f.acceptEitherAsync(g, null, exec), |
| 3268 | () -> f.acceptEither(nullFuture, (x) -> {}), |
| 3269 | () -> f.acceptEitherAsync(nullFuture, (x) -> {}), |
| 3270 | () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec), |
| 3271 | () -> f.acceptEitherAsync(g, (x) -> {}, null), |
| 3272 | |
| 3273 | () -> f.runAfterEither(g, null), |
| 3274 | () -> f.runAfterEitherAsync(g, null), |
| 3275 | () -> f.runAfterEitherAsync(g, null, exec), |
| 3276 | () -> f.runAfterEither(nullFuture, () -> {}), |
| 3277 | () -> f.runAfterEitherAsync(nullFuture, () -> {}), |
| 3278 | () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec), |
| 3279 | () -> f.runAfterEitherAsync(g, () -> {}, null), |
| 3280 | |
| 3281 | () -> f.thenCompose(null), |
| 3282 | () -> f.thenComposeAsync(null), |
| 3283 | () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null), |
| 3284 | () -> f.thenComposeAsync(null, exec), |
| 3285 | |
| 3286 | () -> f.exceptionally(null), |
| 3287 | |
| 3288 | () -> f.handle(null), |
| 3289 | |
| 3290 | () -> CompletableFuture.allOf((CompletableFuture<?>)null), |
| 3291 | () -> CompletableFuture.allOf((CompletableFuture<?>[])null), |
| 3292 | () -> CompletableFuture.allOf(f, null), |
| 3293 | () -> CompletableFuture.allOf(null, f), |
| 3294 | |
| 3295 | () -> CompletableFuture.anyOf((CompletableFuture<?>)null), |
| 3296 | () -> CompletableFuture.anyOf((CompletableFuture<?>[])null), |
| 3297 | () -> CompletableFuture.anyOf(f, null), |
| 3298 | () -> CompletableFuture.anyOf(null, f), |
| 3299 | |
| 3300 | () -> f.obtrudeException(null), |
| 3301 | |
| 3302 | () -> CompletableFuture.delayedExecutor(1L, SECONDS, null), |
| 3303 | () -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()), |
| 3304 | () -> CompletableFuture.delayedExecutor(1L, null), |
| 3305 | |
| 3306 | () -> f.orTimeout(1L, null), |
| 3307 | () -> f.completeOnTimeout(42, 1L, null), |
| 3308 | |
| 3309 | () -> CompletableFuture.failedFuture(null), |
| 3310 | () -> CompletableFuture.failedStage(null), |
| 3311 | }; |
| 3312 | |
| 3313 | assertThrows(NullPointerException.class, throwingActions); |
| 3314 | assertEquals(0, exec.count.get()); |
| 3315 | } |
| 3316 | |
| 3317 | /** |
| 3318 | * toCompletableFuture returns this CompletableFuture. |
| 3319 | */ |
| 3320 | public void testToCompletableFuture() { |
| 3321 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3322 | assertSame(f, f.toCompletableFuture()); |
| 3323 | } |
| 3324 | |
| 3325 | // jdk9 |
| 3326 | |
| 3327 | /** |
| 3328 | * newIncompleteFuture returns an incomplete CompletableFuture |
| 3329 | */ |
| 3330 | public void testNewIncompleteFuture() { |
| 3331 | for (Integer v1 : new Integer[] { 1, null }) |
| 3332 | { |
| 3333 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3334 | CompletableFuture<Integer> g = f.newIncompleteFuture(); |
| 3335 | checkIncomplete(f); |
| 3336 | checkIncomplete(g); |
| 3337 | f.complete(v1); |
| 3338 | checkCompletedNormally(f, v1); |
| 3339 | checkIncomplete(g); |
| 3340 | g.complete(v1); |
| 3341 | checkCompletedNormally(g, v1); |
| 3342 | assertSame(g.getClass(), CompletableFuture.class); |
| 3343 | }} |
| 3344 | |
| 3345 | /** |
| 3346 | * completedStage returns a completed CompletionStage |
| 3347 | */ |
| 3348 | public void testCompletedStage() { |
| 3349 | AtomicInteger x = new AtomicInteger(0); |
| 3350 | AtomicReference<Throwable> r = new AtomicReference<Throwable>(); |
| 3351 | CompletionStage<Integer> f = CompletableFuture.completedStage(1); |
| 3352 | f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);}); |
| 3353 | assertEquals(x.get(), 1); |
| 3354 | assertNull(r.get()); |
| 3355 | } |
| 3356 | |
| 3357 | /** |
| 3358 | * defaultExecutor by default returns the commonPool if |
| 3359 | * it supports more than one thread. |
| 3360 | */ |
| 3361 | public void testDefaultExecutor() { |
| 3362 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3363 | Executor e = f.defaultExecutor(); |
| 3364 | Executor c = ForkJoinPool.commonPool(); |
| 3365 | if (ForkJoinPool.getCommonPoolParallelism() > 1) |
| 3366 | assertSame(e, c); |
| 3367 | else |
| 3368 | assertNotSame(e, c); |
| 3369 | } |
| 3370 | |
| 3371 | /** |
| 3372 | * failedFuture returns a CompletableFuture completed |
| 3373 | * exceptionally with the given Exception |
| 3374 | */ |
| 3375 | public void testFailedFuture() { |
| 3376 | CFException ex = new CFException(); |
| 3377 | CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex); |
| 3378 | checkCompletedExceptionally(f, ex); |
| 3379 | } |
| 3380 | |
| 3381 | /** |
| 3382 | * failedFuture(null) throws NPE |
| 3383 | */ |
| 3384 | public void testFailedFuture_null() { |
| 3385 | try { |
| 3386 | CompletableFuture<Integer> f = CompletableFuture.failedFuture(null); |
| 3387 | shouldThrow(); |
| 3388 | } catch (NullPointerException success) {} |
| 3389 | } |
| 3390 | |
| 3391 | /** |
| 3392 | * copy returns a CompletableFuture that is completed normally, |
| 3393 | * with the same value, when source is. |
| 3394 | */ |
| 3395 | public void testCopy() { |
| 3396 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3397 | CompletableFuture<Integer> g = f.copy(); |
| 3398 | checkIncomplete(f); |
| 3399 | checkIncomplete(g); |
| 3400 | f.complete(1); |
| 3401 | checkCompletedNormally(f, 1); |
| 3402 | checkCompletedNormally(g, 1); |
| 3403 | } |
| 3404 | |
| 3405 | /** |
| 3406 | * copy returns a CompletableFuture that is completed exceptionally |
| 3407 | * when source is. |
| 3408 | */ |
| 3409 | public void testCopy2() { |
| 3410 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3411 | CompletableFuture<Integer> g = f.copy(); |
| 3412 | checkIncomplete(f); |
| 3413 | checkIncomplete(g); |
| 3414 | CFException ex = new CFException(); |
| 3415 | f.completeExceptionally(ex); |
| 3416 | checkCompletedExceptionally(f, ex); |
| 3417 | checkCompletedWithWrappedException(g, ex); |
| 3418 | } |
| 3419 | |
| 3420 | /** |
| 3421 | * minimalCompletionStage returns a CompletableFuture that is |
| 3422 | * completed normally, with the same value, when source is. |
| 3423 | */ |
| 3424 | public void testMinimalCompletionStage() { |
| 3425 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3426 | CompletionStage<Integer> g = f.minimalCompletionStage(); |
| 3427 | AtomicInteger x = new AtomicInteger(0); |
| 3428 | AtomicReference<Throwable> r = new AtomicReference<Throwable>(); |
| 3429 | checkIncomplete(f); |
| 3430 | g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);}); |
| 3431 | f.complete(1); |
| 3432 | checkCompletedNormally(f, 1); |
| 3433 | assertEquals(x.get(), 1); |
| 3434 | assertNull(r.get()); |
| 3435 | } |
| 3436 | |
| 3437 | /** |
| 3438 | * minimalCompletionStage returns a CompletableFuture that is |
| 3439 | * completed exceptionally when source is. |
| 3440 | */ |
| 3441 | public void testMinimalCompletionStage2() { |
| 3442 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3443 | CompletionStage<Integer> g = f.minimalCompletionStage(); |
| 3444 | AtomicInteger x = new AtomicInteger(0); |
| 3445 | AtomicReference<Throwable> r = new AtomicReference<Throwable>(); |
| 3446 | g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);}); |
| 3447 | checkIncomplete(f); |
| 3448 | CFException ex = new CFException(); |
| 3449 | f.completeExceptionally(ex); |
| 3450 | checkCompletedExceptionally(f, ex); |
| 3451 | assertEquals(x.get(), 0); |
| 3452 | assertEquals(r.get().getCause(), ex); |
| 3453 | } |
| 3454 | |
| 3455 | /** |
| 3456 | * failedStage returns a CompletionStage completed |
| 3457 | * exceptionally with the given Exception |
| 3458 | */ |
| 3459 | public void testFailedStage() { |
| 3460 | CFException ex = new CFException(); |
| 3461 | CompletionStage<Integer> f = CompletableFuture.failedStage(ex); |
| 3462 | AtomicInteger x = new AtomicInteger(0); |
| 3463 | AtomicReference<Throwable> r = new AtomicReference<Throwable>(); |
| 3464 | f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);}); |
| 3465 | assertEquals(x.get(), 0); |
| 3466 | assertEquals(r.get(), ex); |
| 3467 | } |
| 3468 | |
| 3469 | /** |
| 3470 | * completeAsync completes with value of given supplier |
| 3471 | */ |
| 3472 | public void testCompleteAsync() { |
| 3473 | for (Integer v1 : new Integer[] { 1, null }) |
| 3474 | { |
| 3475 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3476 | f.completeAsync(() -> v1); |
| 3477 | f.join(); |
| 3478 | checkCompletedNormally(f, v1); |
| 3479 | }} |
| 3480 | |
| 3481 | /** |
| 3482 | * completeAsync completes exceptionally if given supplier throws |
| 3483 | */ |
| 3484 | public void testCompleteAsync2() { |
| 3485 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3486 | CFException ex = new CFException(); |
| 3487 | f.completeAsync(() -> {if (true) throw ex; return 1;}); |
| 3488 | try { |
| 3489 | f.join(); |
| 3490 | shouldThrow(); |
| 3491 | } catch (CompletionException success) {} |
| 3492 | checkCompletedWithWrappedException(f, ex); |
| 3493 | } |
| 3494 | |
| 3495 | /** |
| 3496 | * completeAsync with given executor completes with value of given supplier |
| 3497 | */ |
| 3498 | public void testCompleteAsync3() { |
| 3499 | for (Integer v1 : new Integer[] { 1, null }) |
| 3500 | { |
| 3501 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3502 | ThreadExecutor executor = new ThreadExecutor(); |
| 3503 | f.completeAsync(() -> v1, executor); |
| 3504 | assertSame(v1, f.join()); |
| 3505 | checkCompletedNormally(f, v1); |
| 3506 | assertEquals(1, executor.count.get()); |
| 3507 | }} |
| 3508 | |
| 3509 | /** |
| 3510 | * completeAsync with given executor completes exceptionally if |
| 3511 | * given supplier throws |
| 3512 | */ |
| 3513 | public void testCompleteAsync4() { |
| 3514 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3515 | CFException ex = new CFException(); |
| 3516 | ThreadExecutor executor = new ThreadExecutor(); |
| 3517 | f.completeAsync(() -> {if (true) throw ex; return 1;}, executor); |
| 3518 | try { |
| 3519 | f.join(); |
| 3520 | shouldThrow(); |
| 3521 | } catch (CompletionException success) {} |
| 3522 | checkCompletedWithWrappedException(f, ex); |
| 3523 | assertEquals(1, executor.count.get()); |
| 3524 | } |
| 3525 | |
| 3526 | /** |
| 3527 | * orTimeout completes with TimeoutException if not complete |
| 3528 | */ |
| 3529 | public void testOrTimeout_timesOut() { |
| 3530 | long timeoutMillis = timeoutMillis(); |
| 3531 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3532 | long startTime = System.nanoTime(); |
| 3533 | f.orTimeout(timeoutMillis, MILLISECONDS); |
| 3534 | checkCompletedWithTimeoutException(f); |
| 3535 | assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
| 3536 | } |
| 3537 | |
| 3538 | /** |
| 3539 | * orTimeout completes normally if completed before timeout |
| 3540 | */ |
| 3541 | public void testOrTimeout_completed() { |
| 3542 | for (Integer v1 : new Integer[] { 1, null }) |
| 3543 | { |
| 3544 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3545 | CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 3546 | long startTime = System.nanoTime(); |
| 3547 | f.complete(v1); |
| 3548 | f.orTimeout(LONG_DELAY_MS, MILLISECONDS); |
| 3549 | g.orTimeout(LONG_DELAY_MS, MILLISECONDS); |
| 3550 | g.complete(v1); |
| 3551 | checkCompletedNormally(f, v1); |
| 3552 | checkCompletedNormally(g, v1); |
| 3553 | assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
| 3554 | }} |
| 3555 | |
| 3556 | /** |
| 3557 | * completeOnTimeout completes with given value if not complete |
| 3558 | */ |
| 3559 | public void testCompleteOnTimeout_timesOut() { |
| 3560 | testInParallel(() -> testCompleteOnTimeout_timesOut(42), |
| 3561 | () -> testCompleteOnTimeout_timesOut(null)); |
| 3562 | } |
| 3563 | |
| 3564 | public void testCompleteOnTimeout_timesOut(Integer v) { |
| 3565 | long timeoutMillis = timeoutMillis(); |
| 3566 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3567 | long startTime = System.nanoTime(); |
| 3568 | f.completeOnTimeout(v, timeoutMillis, MILLISECONDS); |
| 3569 | assertSame(v, f.join()); |
| 3570 | assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
| 3571 | f.complete(99); // should have no effect |
| 3572 | checkCompletedNormally(f, v); |
| 3573 | } |
| 3574 | |
| 3575 | /** |
| 3576 | * completeOnTimeout has no effect if completed within timeout |
| 3577 | */ |
| 3578 | public void testCompleteOnTimeout_completed() { |
| 3579 | for (Integer v1 : new Integer[] { 1, null }) |
| 3580 | { |
| 3581 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3582 | CompletableFuture<Integer> g = new CompletableFuture<>(); |
| 3583 | long startTime = System.nanoTime(); |
| 3584 | f.complete(v1); |
| 3585 | f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS); |
| 3586 | g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS); |
| 3587 | g.complete(v1); |
| 3588 | checkCompletedNormally(f, v1); |
| 3589 | checkCompletedNormally(g, v1); |
| 3590 | assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
| 3591 | }} |
| 3592 | |
| 3593 | /** |
| 3594 | * delayedExecutor returns an executor that delays submission |
| 3595 | */ |
| 3596 | public void testDelayedExecutor() { |
| 3597 | testInParallel(() -> testDelayedExecutor(null, null), |
| 3598 | () -> testDelayedExecutor(null, 1), |
| 3599 | () -> testDelayedExecutor(new ThreadExecutor(), 1), |
| 3600 | () -> testDelayedExecutor(new ThreadExecutor(), 1)); |
| 3601 | } |
| 3602 | |
| 3603 | public void testDelayedExecutor(Executor executor, Integer v) throws Exception { |
| 3604 | long timeoutMillis = timeoutMillis(); |
| 3605 | // Use an "unreasonably long" long timeout to catch lingering threads |
| 3606 | long longTimeoutMillis = 1000 * 60 * 60 * 24; |
| 3607 | final Executor delayer, longDelayer; |
| 3608 | if (executor == null) { |
| 3609 | delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS); |
| 3610 | longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS); |
| 3611 | } else { |
| 3612 | delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor); |
| 3613 | longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor); |
| 3614 | } |
| 3615 | long startTime = System.nanoTime(); |
| 3616 | CompletableFuture<Integer> f = |
| 3617 | CompletableFuture.supplyAsync(() -> v, delayer); |
| 3618 | CompletableFuture<Integer> g = |
| 3619 | CompletableFuture.supplyAsync(() -> v, longDelayer); |
| 3620 | |
| 3621 | assertNull(g.getNow(null)); |
| 3622 | |
| 3623 | assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS)); |
| 3624 | long millisElapsed = millisElapsedSince(startTime); |
| 3625 | assertTrue(millisElapsed >= timeoutMillis); |
| 3626 | assertTrue(millisElapsed < LONG_DELAY_MS / 2); |
| 3627 | |
| 3628 | checkCompletedNormally(f, v); |
| 3629 | |
| 3630 | checkIncomplete(g); |
| 3631 | assertTrue(g.cancel(true)); |
| 3632 | } |
| 3633 | |
| 3634 | //--- tests of implementation details; not part of official tck --- |
| 3635 | |
| 3636 | Object resultOf(CompletableFuture<?> f) { |
| 3637 | try { |
| 3638 | java.lang.reflect.Field resultField |
| 3639 | = CompletableFuture.class.getDeclaredField("result"); |
| 3640 | resultField.setAccessible(true); |
| 3641 | return resultField.get(f); |
| 3642 | } catch (Throwable t) { throw new AssertionError(t); } |
| 3643 | } |
| 3644 | |
| 3645 | public void testExceptionPropagationReusesResultObject() { |
| 3646 | if (!testImplementationDetails) return; |
| 3647 | for (ExecutionMode m : ExecutionMode.values()) |
| 3648 | { |
| 3649 | final CFException ex = new CFException(); |
| 3650 | final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42); |
| 3651 | final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
| 3652 | |
| 3653 | List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs |
| 3654 | = new ArrayList<>(); |
| 3655 | |
| 3656 | funs.add((y) -> m.thenRun(y, new Noop(m))); |
| 3657 | funs.add((y) -> m.thenAccept(y, new NoopConsumer(m))); |
| 3658 | funs.add((y) -> m.thenApply(y, new IncFunction(m))); |
| 3659 | |
| 3660 | funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m))); |
| 3661 | funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m))); |
| 3662 | funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m))); |
| 3663 | |
| 3664 | funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m))); |
| 3665 | funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m))); |
| 3666 | funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m))); |
| 3667 | |
| 3668 | funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {})); |
| 3669 | |
| 3670 | funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m))); |
| 3671 | |
| 3672 | funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42})); |
| 3673 | funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete})); |
| 3674 | |
| 3675 | for (Function<CompletableFuture<Integer>, CompletableFuture<?>> |
| 3676 | fun : funs) { |
| 3677 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3678 | f.completeExceptionally(ex); |
| 3679 | CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m)); |
| 3680 | checkCompletedWithWrappedException(src, ex); |
| 3681 | CompletableFuture<?> dep = fun.apply(src); |
| 3682 | checkCompletedWithWrappedException(dep, ex); |
| 3683 | assertSame(resultOf(src), resultOf(dep)); |
| 3684 | } |
| 3685 | |
| 3686 | for (Function<CompletableFuture<Integer>, CompletableFuture<?>> |
| 3687 | fun : funs) { |
| 3688 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3689 | CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m)); |
| 3690 | CompletableFuture<?> dep = fun.apply(src); |
| 3691 | f.completeExceptionally(ex); |
| 3692 | checkCompletedWithWrappedException(src, ex); |
| 3693 | checkCompletedWithWrappedException(dep, ex); |
| 3694 | assertSame(resultOf(src), resultOf(dep)); |
| 3695 | } |
| 3696 | |
| 3697 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 3698 | for (Function<CompletableFuture<Integer>, CompletableFuture<?>> |
| 3699 | fun : funs) { |
| 3700 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3701 | f.cancel(mayInterruptIfRunning); |
| 3702 | checkCancelled(f); |
| 3703 | CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m)); |
| 3704 | checkCompletedWithWrappedCancellationException(src); |
| 3705 | CompletableFuture<?> dep = fun.apply(src); |
| 3706 | checkCompletedWithWrappedCancellationException(dep); |
| 3707 | assertSame(resultOf(src), resultOf(dep)); |
| 3708 | } |
| 3709 | |
| 3710 | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) |
| 3711 | for (Function<CompletableFuture<Integer>, CompletableFuture<?>> |
| 3712 | fun : funs) { |
| 3713 | CompletableFuture<Integer> f = new CompletableFuture<>(); |
| 3714 | CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m)); |
| 3715 | CompletableFuture<?> dep = fun.apply(src); |
| 3716 | f.cancel(mayInterruptIfRunning); |
| 3717 | checkCancelled(f); |
| 3718 | checkCompletedWithWrappedCancellationException(src); |
| 3719 | checkCompletedWithWrappedCancellationException(dep); |
| 3720 | assertSame(resultOf(src), resultOf(dep)); |
| 3721 | } |
| 3722 | }} |
| 3723 | |
| 3724 | /** |
| 3725 | * Minimal completion stages throw UOE for all non-CompletionStage methods |
| 3726 | */ |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 3727 | public void testMinimalCompletionStage_minimality() { |
| 3728 | if (!testImplementationDetails) return; |
| 3729 | Function<Method, String> toSignature = |
| 3730 | (method) -> method.getName() + Arrays.toString(method.getParameterTypes()); |
| 3731 | Predicate<Method> isNotStatic = |
| 3732 | (method) -> (method.getModifiers() & Modifier.STATIC) == 0; |
mikaelpeltier | ed0c2aa | 2016-12-09 12:05:28 +0100 | [diff] [blame] | 3733 | // Android-changed: Added a cast to workaround an ECJ bug. http://b/33371837 |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 3734 | List<Method> minimalMethods = |
| 3735 | Stream.of(Object.class, CompletionStage.class) |
mikaelpeltier | 69adde9 | 2016-12-06 17:05:31 +0100 | [diff] [blame] | 3736 | .flatMap((klazz) -> (Stream<Method>) Stream.of(klazz.getMethods())) |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 3737 | .filter(isNotStatic) |
| 3738 | .collect(Collectors.toList()); |
| 3739 | // Methods from CompletableFuture permitted NOT to throw UOE |
| 3740 | String[] signatureWhitelist = { |
| 3741 | "newIncompleteFuture[]", |
| 3742 | "defaultExecutor[]", |
| 3743 | "minimalCompletionStage[]", |
| 3744 | "copy[]", |
| 3745 | }; |
| 3746 | Set<String> permittedMethodSignatures = |
| 3747 | Stream.concat(minimalMethods.stream().map(toSignature), |
| 3748 | Stream.of(signatureWhitelist)) |
| 3749 | .collect(Collectors.toSet()); |
| 3750 | List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods()) |
| 3751 | .filter(isNotStatic) |
| 3752 | .filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method))) |
| 3753 | .collect(Collectors.toList()); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 3754 | |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 3755 | CompletionStage<Integer> minimalStage = |
| 3756 | new CompletableFuture<Integer>().minimalCompletionStage(); |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 3757 | |
Igor Murashkin | ff18b5f | 2016-03-16 13:29:15 +0000 | [diff] [blame] | 3758 | List<Method> bugs = new ArrayList<>(); |
| 3759 | for (Method method : allMethods) { |
| 3760 | Class<?>[] parameterTypes = method.getParameterTypes(); |
| 3761 | Object[] args = new Object[parameterTypes.length]; |
| 3762 | // Manufacture boxed primitives for primitive params |
| 3763 | for (int i = 0; i < args.length; i++) { |
| 3764 | Class<?> type = parameterTypes[i]; |
| 3765 | if (parameterTypes[i] == boolean.class) |
| 3766 | args[i] = false; |
| 3767 | else if (parameterTypes[i] == int.class) |
| 3768 | args[i] = 0; |
| 3769 | else if (parameterTypes[i] == long.class) |
| 3770 | args[i] = 0L; |
| 3771 | } |
| 3772 | try { |
| 3773 | method.invoke(minimalStage, args); |
| 3774 | bugs.add(method); |
| 3775 | } |
| 3776 | catch (java.lang.reflect.InvocationTargetException expected) { |
| 3777 | if (! (expected.getCause() instanceof UnsupportedOperationException)) { |
| 3778 | bugs.add(method); |
| 3779 | // expected.getCause().printStackTrace(); |
| 3780 | } |
| 3781 | } |
| 3782 | catch (ReflectiveOperationException bad) { throw new Error(bad); } |
| 3783 | } |
| 3784 | if (!bugs.isEmpty()) |
| 3785 | throw new Error("Methods did not throw UOE: " + bugs.toString()); |
| 3786 | } |
Przemyslaw Szczepaniak | e8b323c | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 3787 | |
| 3788 | static class Monad { |
| 3789 | static class ZeroException extends RuntimeException { |
| 3790 | public ZeroException() { super("monadic zero"); } |
| 3791 | } |
| 3792 | // "return", "unit" |
| 3793 | static <T> CompletableFuture<T> unit(T value) { |
| 3794 | return completedFuture(value); |
| 3795 | } |
| 3796 | // monadic zero ? |
| 3797 | static <T> CompletableFuture<T> zero() { |
| 3798 | return failedFuture(new ZeroException()); |
| 3799 | } |
| 3800 | // >=> |
| 3801 | static <T,U,V> Function<T, CompletableFuture<V>> compose |
| 3802 | (Function<T, CompletableFuture<U>> f, |
| 3803 | Function<U, CompletableFuture<V>> g) { |
| 3804 | return (x) -> f.apply(x).thenCompose(g); |
| 3805 | } |
| 3806 | |
| 3807 | static void assertZero(CompletableFuture<?> f) { |
| 3808 | try { |
| 3809 | f.getNow(null); |
| 3810 | throw new AssertionFailedError("should throw"); |
| 3811 | } catch (CompletionException success) { |
| 3812 | assertTrue(success.getCause() instanceof ZeroException); |
| 3813 | } |
| 3814 | } |
| 3815 | |
| 3816 | static <T> void assertFutureEquals(CompletableFuture<T> f, |
| 3817 | CompletableFuture<T> g) { |
| 3818 | T fval = null, gval = null; |
| 3819 | Throwable fex = null, gex = null; |
| 3820 | |
| 3821 | try { fval = f.get(); } |
| 3822 | catch (ExecutionException ex) { fex = ex.getCause(); } |
| 3823 | catch (Throwable ex) { fex = ex; } |
| 3824 | |
| 3825 | try { gval = g.get(); } |
| 3826 | catch (ExecutionException ex) { gex = ex.getCause(); } |
| 3827 | catch (Throwable ex) { gex = ex; } |
| 3828 | |
| 3829 | if (fex != null || gex != null) |
| 3830 | assertSame(fex.getClass(), gex.getClass()); |
| 3831 | else |
| 3832 | assertEquals(fval, gval); |
| 3833 | } |
| 3834 | |
| 3835 | static class PlusFuture<T> extends CompletableFuture<T> { |
| 3836 | AtomicReference<Throwable> firstFailure = new AtomicReference<>(null); |
| 3837 | } |
| 3838 | |
| 3839 | /** Implements "monadic plus". */ |
| 3840 | static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f, |
| 3841 | CompletableFuture<? extends T> g) { |
| 3842 | PlusFuture<T> plus = new PlusFuture<T>(); |
| 3843 | BiConsumer<T, Throwable> action = (T result, Throwable ex) -> { |
| 3844 | try { |
| 3845 | if (ex == null) { |
| 3846 | if (plus.complete(result)) |
| 3847 | if (plus.firstFailure.get() != null) |
| 3848 | plus.firstFailure.set(null); |
| 3849 | } |
| 3850 | else if (plus.firstFailure.compareAndSet(null, ex)) { |
| 3851 | if (plus.isDone()) |
| 3852 | plus.firstFailure.set(null); |
| 3853 | } |
| 3854 | else { |
| 3855 | // first failure has precedence |
| 3856 | Throwable first = plus.firstFailure.getAndSet(null); |
| 3857 | |
| 3858 | // may fail with "Self-suppression not permitted" |
| 3859 | try { first.addSuppressed(ex); } |
| 3860 | catch (Exception ignored) {} |
| 3861 | |
| 3862 | plus.completeExceptionally(first); |
| 3863 | } |
| 3864 | } catch (Throwable unexpected) { |
| 3865 | plus.completeExceptionally(unexpected); |
| 3866 | } |
| 3867 | }; |
| 3868 | f.whenComplete(action); |
| 3869 | g.whenComplete(action); |
| 3870 | return plus; |
| 3871 | } |
| 3872 | } |
| 3873 | |
| 3874 | /** |
| 3875 | * CompletableFuture is an additive monad - sort of. |
| 3876 | * https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads |
| 3877 | */ |
| 3878 | public void testAdditiveMonad() throws Throwable { |
| 3879 | Function<Long, CompletableFuture<Long>> unit = Monad::unit; |
| 3880 | CompletableFuture<Long> zero = Monad.zero(); |
| 3881 | |
| 3882 | // Some mutually non-commutative functions |
| 3883 | Function<Long, CompletableFuture<Long>> triple |
| 3884 | = (x) -> Monad.unit(3 * x); |
| 3885 | Function<Long, CompletableFuture<Long>> inc |
| 3886 | = (x) -> Monad.unit(x + 1); |
| 3887 | |
| 3888 | // unit is a right identity: m >>= unit === m |
| 3889 | Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit), |
| 3890 | inc.apply(5L)); |
| 3891 | // unit is a left identity: (unit x) >>= f === f x |
| 3892 | Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc), |
| 3893 | inc.apply(5L)); |
| 3894 | |
| 3895 | // associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) ) |
| 3896 | Monad.assertFutureEquals( |
| 3897 | unit.apply(5L).thenCompose(inc).thenCompose(triple), |
| 3898 | unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple))); |
| 3899 | |
| 3900 | // The case for CompletableFuture as an additive monad is weaker... |
| 3901 | |
| 3902 | // zero is a monadic zero |
| 3903 | Monad.assertZero(zero); |
| 3904 | |
| 3905 | // left zero: zero >>= f === zero |
| 3906 | Monad.assertZero(zero.thenCompose(inc)); |
| 3907 | // right zero: f >>= (\x -> zero) === zero |
| 3908 | Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero)); |
| 3909 | |
| 3910 | // f plus zero === f |
| 3911 | Monad.assertFutureEquals(Monad.unit(5L), |
| 3912 | Monad.plus(Monad.unit(5L), zero)); |
| 3913 | // zero plus f === f |
| 3914 | Monad.assertFutureEquals(Monad.unit(5L), |
| 3915 | Monad.plus(zero, Monad.unit(5L))); |
| 3916 | // zero plus zero === zero |
| 3917 | Monad.assertZero(Monad.plus(zero, zero)); |
| 3918 | { |
| 3919 | CompletableFuture<Long> f = Monad.plus(Monad.unit(5L), |
| 3920 | Monad.unit(8L)); |
| 3921 | // non-determinism |
| 3922 | assertTrue(f.get() == 5L || f.get() == 8L); |
| 3923 | } |
| 3924 | |
| 3925 | CompletableFuture<Long> godot = new CompletableFuture<>(); |
| 3926 | // f plus godot === f (doesn't wait for godot) |
| 3927 | Monad.assertFutureEquals(Monad.unit(5L), |
| 3928 | Monad.plus(Monad.unit(5L), godot)); |
| 3929 | // godot plus f === f (doesn't wait for godot) |
| 3930 | Monad.assertFutureEquals(Monad.unit(5L), |
| 3931 | Monad.plus(godot, Monad.unit(5L))); |
| 3932 | } |
| 3933 | |
| 3934 | // static <U> U join(CompletionStage<U> stage) { |
| 3935 | // CompletableFuture<U> f = new CompletableFuture<>(); |
| 3936 | // stage.whenComplete((v, ex) -> { |
| 3937 | // if (ex != null) f.completeExceptionally(ex); else f.complete(v); |
| 3938 | // }); |
| 3939 | // return f.join(); |
| 3940 | // } |
| 3941 | |
| 3942 | // static <U> boolean isDone(CompletionStage<U> stage) { |
| 3943 | // CompletableFuture<U> f = new CompletableFuture<>(); |
| 3944 | // stage.whenComplete((v, ex) -> { |
| 3945 | // if (ex != null) f.completeExceptionally(ex); else f.complete(v); |
| 3946 | // }); |
| 3947 | // return f.isDone(); |
| 3948 | // } |
| 3949 | |
| 3950 | // static <U> U join2(CompletionStage<U> stage) { |
| 3951 | // return stage.toCompletableFuture().copy().join(); |
| 3952 | // } |
| 3953 | |
| 3954 | // static <U> boolean isDone2(CompletionStage<U> stage) { |
| 3955 | // return stage.toCompletableFuture().copy().isDone(); |
| 3956 | // } |
| 3957 | |
| 3958 | } |