sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2015 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.google.inject.spi; |
| 18 | |
| 19 | import static com.google.inject.Asserts.assertContains; |
| 20 | import static com.google.inject.name.Names.named; |
| 21 | import static java.lang.annotation.ElementType.METHOD; |
| 22 | import static java.lang.annotation.RetentionPolicy.RUNTIME; |
| 23 | |
| 24 | import com.google.common.collect.ImmutableSet; |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 25 | import com.google.common.collect.Iterables; |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 26 | import com.google.inject.AbstractModule; |
| 27 | import com.google.inject.Binder; |
| 28 | import com.google.inject.Binding; |
| 29 | import com.google.inject.CreationException; |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 30 | import com.google.inject.Exposed; |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 31 | import com.google.inject.Guice; |
| 32 | import com.google.inject.Injector; |
| 33 | import com.google.inject.Key; |
| 34 | import com.google.inject.Module; |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 35 | import com.google.inject.PrivateModule; |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 36 | import com.google.inject.internal.util.StackTraceElements; |
| 37 | import com.google.inject.name.Named; |
| 38 | import com.google.inject.name.Names; |
| 39 | |
| 40 | import junit.framework.TestCase; |
| 41 | |
| 42 | import java.lang.annotation.Annotation; |
| 43 | import java.lang.annotation.Documented; |
| 44 | import java.lang.annotation.Retention; |
| 45 | import java.lang.annotation.Target; |
| 46 | import java.util.Set; |
| 47 | |
| 48 | /** Tests for {@link ModuleAnnotatedMethodScanner} usage. */ |
| 49 | public class ModuleAnnotatedMethodScannerTest extends TestCase { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 50 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 51 | public void testScanning() throws Exception { |
| 52 | Module module = new AbstractModule() { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 53 | @Override protected void configure() {} |
| 54 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 55 | @TestProvides @Named("foo") String foo() { |
| 56 | return "foo"; |
| 57 | } |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 58 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 59 | @TestProvides @Named("foo2") String foo2() { |
| 60 | return "foo2"; |
| 61 | } |
| 62 | }; |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 63 | Injector injector = Guice.createInjector(module, NamedMunger.module()); |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 64 | |
| 65 | // assert no bindings named "foo" or "foo2" exist -- they were munged. |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 66 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 67 | assertMungedBinding(injector, String.class, "foo2", "foo2"); |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 68 | |
| 69 | Binding<String> fooBinding = injector.getBinding(Key.get(String.class, named("foo-munged"))); |
| 70 | Binding<String> foo2Binding = injector.getBinding(Key.get(String.class, named("foo2-munged"))); |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 71 | // Validate the provider has a sane toString |
| 72 | assertEquals(methodName(TestProvides.class, "foo", module), |
| 73 | fooBinding.getProvider().toString()); |
| 74 | assertEquals(methodName(TestProvides.class, "foo2", module), |
| 75 | foo2Binding.getProvider().toString()); |
| 76 | } |
| 77 | |
sameb | 02c489e | 2015-03-20 12:29:45 -0700 | [diff] [blame^] | 78 | public void testSkipSources() throws Exception { |
| 79 | Module module = new AbstractModule() { |
| 80 | @Override protected void configure() { |
| 81 | binder().skipSources(getClass()).install(new AbstractModule() { |
| 82 | @Override protected void configure() {} |
| 83 | |
| 84 | @TestProvides @Named("foo") String foo() { return "foo"; } |
| 85 | }); |
| 86 | } |
| 87 | }; |
| 88 | Injector injector = Guice.createInjector(module, NamedMunger.module()); |
| 89 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 90 | } |
| 91 | |
| 92 | public void testWithSource() throws Exception { |
| 93 | Module module = new AbstractModule() { |
| 94 | @Override protected void configure() { |
| 95 | binder().withSource("source").install(new AbstractModule() { |
| 96 | @Override protected void configure() {} |
| 97 | |
| 98 | @TestProvides @Named("foo") String foo() { return "foo"; } |
| 99 | }); |
| 100 | } |
| 101 | }; |
| 102 | Injector injector = Guice.createInjector(module, NamedMunger.module()); |
| 103 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 104 | } |
| 105 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 106 | public void testMoreThanOneClaimedAnnotationFails() throws Exception { |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 107 | Module module = new AbstractModule() { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 108 | @Override protected void configure() {} |
| 109 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 110 | @TestProvides @TestProvides2 String foo() { |
| 111 | return "foo"; |
| 112 | } |
| 113 | }; |
| 114 | try { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 115 | Guice.createInjector(module, NamedMunger.module()); |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 116 | fail(); |
| 117 | } catch(CreationException expected) { |
| 118 | assertEquals(1, expected.getErrorMessages().size()); |
| 119 | assertContains(expected.getMessage(), |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 120 | "More than one annotation claimed by NamedMunger on method " |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 121 | + module.getClass().getName() + ".foo(). Methods can only have " |
| 122 | + "one annotation claimed per scanner."); |
| 123 | } |
| 124 | } |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 125 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 126 | private String methodName(Class<? extends Annotation> annotation, String method, Object container) |
| 127 | throws Exception { |
| 128 | return "@" + annotation.getName() + " " |
| 129 | + StackTraceElements.forMember(container.getClass().getDeclaredMethod(method)); |
| 130 | } |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 131 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 132 | @Documented @Target(METHOD) @Retention(RUNTIME) |
| 133 | private @interface TestProvides {} |
| 134 | |
| 135 | @Documented @Target(METHOD) @Retention(RUNTIME) |
| 136 | private @interface TestProvides2 {} |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 137 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 138 | private static class NamedMunger extends ModuleAnnotatedMethodScanner { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 139 | static Module module() { |
| 140 | return new AbstractModule() { |
| 141 | @Override protected void configure() { |
| 142 | binder().scanModulesForAnnotatedMethods(new NamedMunger()); |
| 143 | } |
| 144 | }; |
| 145 | } |
| 146 | |
| 147 | @Override |
| 148 | public String toString() { |
| 149 | return "NamedMunger"; |
| 150 | } |
| 151 | |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 152 | @Override |
| 153 | public Set<? extends Class<? extends Annotation>> annotationClasses() { |
| 154 | return ImmutableSet.of(TestProvides.class, TestProvides2.class); |
| 155 | } |
| 156 | |
| 157 | @Override |
| 158 | public <T> Key<T> prepareMethod(Binder binder, Annotation annotation, Key<T> key, |
| 159 | InjectionPoint injectionPoint) { |
| 160 | return Key.get(key.getTypeLiteral(), |
| 161 | Names.named(((Named) key.getAnnotation()).value() + "-munged")); |
| 162 | } |
| 163 | } |
sameb | 7445e44 | 2015-02-10 15:37:44 -0800 | [diff] [blame] | 164 | |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 165 | private void assertMungedBinding(Injector injector, Class<?> clazz, String originalName, |
| 166 | Object expectedValue) { |
| 167 | assertNull(injector.getExistingBinding(Key.get(clazz, named(originalName)))); |
| 168 | Binding<?> fooBinding = injector.getBinding(Key.get(clazz, named(originalName + "-munged"))); |
| 169 | assertEquals(expectedValue, fooBinding.getProvider().get()); |
| 170 | } |
| 171 | |
| 172 | public void testFailingScanner() { |
sameb | 7445e44 | 2015-02-10 15:37:44 -0800 | [diff] [blame] | 173 | try { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 174 | Guice.createInjector(new SomeModule(), FailingScanner.module()); |
sameb | 7445e44 | 2015-02-10 15:37:44 -0800 | [diff] [blame] | 175 | fail(); |
| 176 | } catch (CreationException expected) { |
| 177 | Message m = Iterables.getOnlyElement(expected.getErrorMessages()); |
| 178 | assertEquals( |
| 179 | "An exception was caught and reported. Message: Failing in the scanner.", |
| 180 | m.getMessage()); |
| 181 | assertEquals(IllegalStateException.class, m.getCause().getClass()); |
| 182 | ElementSource source = (ElementSource) Iterables.getOnlyElement(m.getSources()); |
| 183 | assertEquals(SomeModule.class.getName(), |
| 184 | Iterables.getOnlyElement(source.getModuleClassNames())); |
| 185 | assertEquals(String.class.getName() + " " + SomeModule.class.getName() + ".aString()", |
| 186 | source.toString()); |
| 187 | } |
| 188 | } |
| 189 | |
sameb | 7445e44 | 2015-02-10 15:37:44 -0800 | [diff] [blame] | 190 | public static class FailingScanner extends ModuleAnnotatedMethodScanner { |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 191 | static Module module() { |
| 192 | return new AbstractModule() { |
| 193 | @Override protected void configure() { |
| 194 | binder().scanModulesForAnnotatedMethods(new FailingScanner()); |
| 195 | } |
| 196 | }; |
| 197 | } |
| 198 | |
sameb | 7445e44 | 2015-02-10 15:37:44 -0800 | [diff] [blame] | 199 | @Override public Set<? extends Class<? extends Annotation>> annotationClasses() { |
| 200 | return ImmutableSet.of(TestProvides.class); |
| 201 | } |
| 202 | |
| 203 | @Override public <T> Key<T> prepareMethod( |
| 204 | Binder binder, Annotation rawAnnotation, Key<T> key, InjectionPoint injectionPoint) { |
| 205 | throw new IllegalStateException("Failing in the scanner."); |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | static class SomeModule extends AbstractModule { |
| 210 | @TestProvides String aString() { |
| 211 | return "Foo"; |
| 212 | } |
| 213 | |
| 214 | @Override protected void configure() {} |
| 215 | } |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 216 | |
| 217 | public void testChildInjectorInheritsScanner() { |
| 218 | Injector parent = Guice.createInjector(NamedMunger.module()); |
| 219 | Injector child = parent.createChildInjector(new AbstractModule() { |
| 220 | @Override protected void configure() {} |
| 221 | |
| 222 | @TestProvides @Named("foo") String foo() { |
| 223 | return "foo"; |
| 224 | } |
| 225 | }); |
| 226 | assertMungedBinding(child, String.class, "foo", "foo"); |
| 227 | } |
| 228 | |
| 229 | public void testChildInjectorScannersDontImpactSiblings() { |
| 230 | Module module = new AbstractModule() { |
| 231 | @Override |
| 232 | protected void configure() {} |
| 233 | |
| 234 | @TestProvides @Named("foo") String foo() { |
| 235 | return "foo"; |
| 236 | } |
| 237 | }; |
| 238 | Injector parent = Guice.createInjector(); |
| 239 | Injector child = parent.createChildInjector(NamedMunger.module(), module); |
| 240 | assertMungedBinding(child, String.class, "foo", "foo"); |
| 241 | |
| 242 | // no foo nor foo-munged in sibling, since scanner never saw it. |
| 243 | Injector sibling = parent.createChildInjector(module); |
| 244 | assertNull(sibling.getExistingBinding(Key.get(String.class, named("foo")))); |
| 245 | assertNull(sibling.getExistingBinding(Key.get(String.class, named("foo-munged")))); |
| 246 | } |
| 247 | |
| 248 | public void testPrivateModuleInheritScanner_usingPrivateModule() { |
| 249 | Injector injector = Guice.createInjector(NamedMunger.module(), new PrivateModule() { |
| 250 | @Override protected void configure() {} |
| 251 | |
| 252 | @Exposed @TestProvides @Named("foo") String foo() { |
| 253 | return "foo"; |
| 254 | } |
| 255 | }); |
| 256 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 257 | } |
| 258 | |
sameb | 02c489e | 2015-03-20 12:29:45 -0700 | [diff] [blame^] | 259 | public void testPrivateModule_skipSourcesWithinPrivateModule() { |
| 260 | Injector injector = Guice.createInjector(NamedMunger.module(), new PrivateModule() { |
| 261 | @Override protected void configure() { |
| 262 | binder().skipSources(getClass()).install(new AbstractModule() { |
| 263 | @Override protected void configure() {} |
| 264 | @Exposed @TestProvides @Named("foo") String foo() { |
| 265 | return "foo"; |
| 266 | } |
| 267 | }); |
| 268 | } |
| 269 | }); |
| 270 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 271 | } |
| 272 | |
| 273 | public void testPrivateModule_skipSourcesForPrivateModule() { |
| 274 | Injector injector = Guice.createInjector(NamedMunger.module(), new AbstractModule() { |
| 275 | @Override protected void configure() { |
| 276 | binder().skipSources(getClass()).install(new PrivateModule() { |
| 277 | @Override protected void configure() {} |
| 278 | |
| 279 | @Exposed @TestProvides @Named("foo") String foo() { |
| 280 | return "foo"; |
| 281 | } |
| 282 | }); |
| 283 | }}); |
| 284 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 285 | } |
| 286 | |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 287 | public void testPrivateModuleInheritScanner_usingPrivateBinder() { |
| 288 | Injector injector = Guice.createInjector(NamedMunger.module(), new AbstractModule() { |
| 289 | @Override protected void configure() { |
| 290 | binder().newPrivateBinder().install(new AbstractModule() { |
| 291 | @Override protected void configure() {} |
| 292 | |
| 293 | @Exposed @TestProvides @Named("foo") String foo() { |
| 294 | return "foo"; |
| 295 | } |
| 296 | }); |
| 297 | } |
| 298 | }); |
| 299 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 300 | } |
| 301 | |
sameb | 02c489e | 2015-03-20 12:29:45 -0700 | [diff] [blame^] | 302 | public void testPrivateModuleInheritScanner_skipSourcesFromPrivateBinder() { |
| 303 | Injector injector = Guice.createInjector(NamedMunger.module(), new AbstractModule() { |
| 304 | @Override protected void configure() { |
| 305 | binder().newPrivateBinder().skipSources(getClass()).install(new AbstractModule() { |
| 306 | @Override protected void configure() {} |
| 307 | |
| 308 | @Exposed @TestProvides @Named("foo") String foo() { |
| 309 | return "foo"; |
| 310 | } |
| 311 | }); |
| 312 | } |
| 313 | }); |
| 314 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 315 | } |
| 316 | |
| 317 | public void testPrivateModuleInheritScanner_skipSourcesFromPrivateBinder2() { |
| 318 | Injector injector = Guice.createInjector(NamedMunger.module(), new AbstractModule() { |
| 319 | @Override protected void configure() { |
| 320 | binder().skipSources(getClass()).newPrivateBinder().install(new AbstractModule() { |
| 321 | @Override protected void configure() {} |
| 322 | |
| 323 | @Exposed @TestProvides @Named("foo") String foo() { |
| 324 | return "foo"; |
| 325 | } |
| 326 | }); |
| 327 | } |
| 328 | }); |
| 329 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 330 | } |
| 331 | |
sameb | 54da0e3 | 2015-02-19 18:36:52 -0800 | [diff] [blame] | 332 | public void testPrivateModuleScannersDontImpactSiblings_usingPrivateModule() { |
| 333 | Injector injector = Guice.createInjector(new PrivateModule() { |
| 334 | @Override protected void configure() { |
| 335 | install(NamedMunger.module()); |
| 336 | } |
| 337 | |
| 338 | @Exposed @TestProvides @Named("foo") String foo() { |
| 339 | return "foo"; |
| 340 | } |
| 341 | }, new PrivateModule() { |
| 342 | @Override protected void configure() {} |
| 343 | |
| 344 | // ignored! (because the scanner doesn't run over this module) |
| 345 | @Exposed @TestProvides @Named("foo") String foo() { |
| 346 | return "foo"; |
| 347 | } |
| 348 | }); |
| 349 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 350 | } |
| 351 | |
| 352 | public void testPrivateModuleScannersDontImpactSiblings_usingPrivateBinder() { |
| 353 | Injector injector = Guice.createInjector(new AbstractModule() { |
| 354 | @Override protected void configure() { |
| 355 | binder().newPrivateBinder().install(new AbstractModule() { |
| 356 | @Override protected void configure() { |
| 357 | install(NamedMunger.module()); |
| 358 | } |
| 359 | |
| 360 | @Exposed @TestProvides @Named("foo") String foo() { |
| 361 | return "foo"; |
| 362 | } |
| 363 | }); |
| 364 | } |
| 365 | }, new AbstractModule() { |
| 366 | @Override protected void configure() { |
| 367 | binder().newPrivateBinder().install(new AbstractModule() { |
| 368 | @Override protected void configure() {} |
| 369 | |
| 370 | // ignored! (because the scanner doesn't run over this module) |
| 371 | @Exposed @TestProvides @Named("foo") String foo() { |
| 372 | return "foo"; |
| 373 | } |
| 374 | }); |
| 375 | }}); |
| 376 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 377 | } |
sameb | 02c489e | 2015-03-20 12:29:45 -0700 | [diff] [blame^] | 378 | |
| 379 | public void testPrivateModuleWithinPrivateModule() { |
| 380 | Injector injector = Guice.createInjector(NamedMunger.module(), new PrivateModule() { |
| 381 | @Override protected void configure() { |
| 382 | expose(Key.get(String.class, named("foo-munged"))); |
| 383 | install(new PrivateModule() { |
| 384 | @Override protected void configure() {} |
| 385 | |
| 386 | @Exposed @TestProvides @Named("foo") String foo() { |
| 387 | return "foo"; |
| 388 | } |
| 389 | }); |
| 390 | } |
| 391 | }); |
| 392 | assertMungedBinding(injector, String.class, "foo", "foo"); |
| 393 | } |
sameb | e18906a | 2015-02-02 14:07:53 -0800 | [diff] [blame] | 394 | } |