Christopher Wiley | 1c811fa | 2016-05-18 17:09:56 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 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 android.os.test; |
| 18 | |
| 19 | import static org.hamcrest.core.IsEqual.equalTo; |
| 20 | import static org.junit.Assert.assertEquals; |
| 21 | import static org.junit.Assert.assertTrue; |
| 22 | import static org.mockito.Matchers.any; |
| 23 | import static org.mockito.Mockito.inOrder; |
| 24 | import static org.mockito.Mockito.never; |
| 25 | import static org.mockito.Mockito.spy; |
| 26 | |
| 27 | import android.os.Handler; |
| 28 | import android.os.Looper; |
| 29 | import android.os.Message; |
| 30 | import android.test.suitebuilder.annotation.SmallTest; |
| 31 | |
| 32 | import org.junit.Before; |
| 33 | import org.junit.Rule; |
| 34 | import org.junit.Test; |
| 35 | import org.junit.rules.ErrorCollector; |
| 36 | import org.mockito.ArgumentCaptor; |
| 37 | import org.mockito.InOrder; |
| 38 | import org.mockito.MockitoAnnotations; |
| 39 | |
| 40 | /** |
| 41 | * Test TestLooperAbstractTime which provides control over "time". Note that |
| 42 | * real-time is being used as well. Therefore small time increments are NOT |
| 43 | * reliable. All tests are in "K" units (i.e. *1000). |
| 44 | */ |
| 45 | |
| 46 | @SmallTest |
| 47 | public class TestLooperTest { |
| 48 | private TestLooper mTestLooper; |
| 49 | private Handler mHandler; |
| 50 | private Handler mHandlerSpy; |
| 51 | |
| 52 | @Rule |
| 53 | public ErrorCollector collector = new ErrorCollector(); |
| 54 | |
| 55 | @Before |
| 56 | public void setUp() throws Exception { |
| 57 | MockitoAnnotations.initMocks(this); |
| 58 | |
| 59 | mTestLooper = new TestLooper(); |
| 60 | mHandler = new Handler(mTestLooper.getLooper()); |
| 61 | mHandlerSpy = spy(mHandler); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Basic test with no time stamps: dispatch 4 messages, check that all 4 |
| 66 | * delivered (in correct order). |
| 67 | */ |
| 68 | @Test |
| 69 | public void testNoTimeMovement() { |
| 70 | final int messageA = 1; |
| 71 | final int messageB = 2; |
| 72 | final int messageC = 3; |
| 73 | |
| 74 | InOrder inOrder = inOrder(mHandlerSpy); |
| 75 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 76 | |
| 77 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 78 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 79 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 80 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageC)); |
| 81 | mTestLooper.dispatchAll(); |
| 82 | |
| 83 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 84 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 85 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 86 | collector.checkThat("2: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 87 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 88 | collector.checkThat("3: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 89 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 90 | collector.checkThat("4: messageC", messageC, equalTo(messageCaptor.getValue().what)); |
| 91 | |
| 92 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Test message sequence: A, B, C@5K, A@10K. Don't move time. |
| 97 | * <p> |
| 98 | * Expected: only get A, B |
| 99 | */ |
| 100 | @Test |
| 101 | public void testDelayedDispatchNoTimeMove() { |
| 102 | final int messageA = 1; |
| 103 | final int messageB = 2; |
| 104 | final int messageC = 3; |
| 105 | |
| 106 | InOrder inOrder = inOrder(mHandlerSpy); |
| 107 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 108 | |
| 109 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 110 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 111 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageC), 5000); |
| 112 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageA), 10000); |
| 113 | mTestLooper.dispatchAll(); |
| 114 | |
| 115 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 116 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 117 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 118 | collector.checkThat("2: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 119 | |
| 120 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Test message sequence: A, B, C@5K, A@10K, Advance time by 5K. |
| 125 | * <p> |
| 126 | * Expected: only get A, B, C |
| 127 | */ |
| 128 | @Test |
| 129 | public void testDelayedDispatchAdvanceTimeOnce() { |
| 130 | final int messageA = 1; |
| 131 | final int messageB = 2; |
| 132 | final int messageC = 3; |
| 133 | |
| 134 | InOrder inOrder = inOrder(mHandlerSpy); |
| 135 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 136 | |
| 137 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 138 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 139 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageC), 5000); |
| 140 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageA), 10000); |
| 141 | mTestLooper.moveTimeForward(5000); |
| 142 | mTestLooper.dispatchAll(); |
| 143 | |
| 144 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 145 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 146 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 147 | collector.checkThat("2: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 148 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 149 | collector.checkThat("3: messageC", messageC, equalTo(messageCaptor.getValue().what)); |
| 150 | |
| 151 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Test message sequence: A, B, C@5K, Advance time by 4K, A@1K, B@2K Advance |
| 156 | * time by 1K. |
| 157 | * <p> |
| 158 | * Expected: get A, B, C, A |
| 159 | */ |
| 160 | @Test |
| 161 | public void testDelayedDispatchAdvanceTimeTwice() { |
| 162 | final int messageA = 1; |
| 163 | final int messageB = 2; |
| 164 | final int messageC = 3; |
| 165 | |
| 166 | InOrder inOrder = inOrder(mHandlerSpy); |
| 167 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 168 | |
| 169 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 170 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 171 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageC), 5000); |
| 172 | mTestLooper.moveTimeForward(4000); |
| 173 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageA), 1000); |
| 174 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageB), 2000); |
| 175 | mTestLooper.moveTimeForward(1000); |
| 176 | mTestLooper.dispatchAll(); |
| 177 | |
| 178 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 179 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 180 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 181 | collector.checkThat("2: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 182 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 183 | collector.checkThat("3: messageC", messageC, equalTo(messageCaptor.getValue().what)); |
| 184 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 185 | collector.checkThat("4: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 186 | |
| 187 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Test message sequence: A, B, C@5K, Advance time by 4K, A@5K, B@2K Advance |
| 192 | * time by 3K. |
| 193 | * <p> |
| 194 | * Expected: get A, B, C, B |
| 195 | */ |
| 196 | @Test |
| 197 | public void testDelayedDispatchReverseOrder() { |
| 198 | final int messageA = 1; |
| 199 | final int messageB = 2; |
| 200 | final int messageC = 3; |
| 201 | |
| 202 | InOrder inOrder = inOrder(mHandlerSpy); |
| 203 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 204 | |
| 205 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 206 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 207 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageC), 5000); |
| 208 | mTestLooper.moveTimeForward(4000); |
| 209 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageA), 5000); |
| 210 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageB), 2000); |
| 211 | mTestLooper.moveTimeForward(3000); |
| 212 | mTestLooper.dispatchAll(); |
| 213 | |
| 214 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 215 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 216 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 217 | collector.checkThat("2: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 218 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 219 | collector.checkThat("3: messageC", messageC, equalTo(messageCaptor.getValue().what)); |
| 220 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 221 | collector.checkThat("4: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 222 | |
| 223 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Test message sequence: A, B, C@5K, Advance time by 4K, dispatch all, |
| 228 | * A@5K, B@2K Advance time by 3K, dispatch all. |
| 229 | * <p> |
| 230 | * Expected: get A, B after first dispatch; then C, B after second dispatch |
| 231 | */ |
| 232 | @Test |
| 233 | public void testDelayedDispatchAllMultipleTimes() { |
| 234 | final int messageA = 1; |
| 235 | final int messageB = 2; |
| 236 | final int messageC = 3; |
| 237 | |
| 238 | InOrder inOrder = inOrder(mHandlerSpy); |
| 239 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 240 | |
| 241 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 242 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageB)); |
| 243 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageC), 5000); |
| 244 | mTestLooper.moveTimeForward(4000); |
| 245 | mTestLooper.dispatchAll(); |
| 246 | |
| 247 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 248 | collector.checkThat("1: messageA", messageA, equalTo(messageCaptor.getValue().what)); |
| 249 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 250 | collector.checkThat("2: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 251 | |
| 252 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageA), 5000); |
| 253 | mHandlerSpy.sendMessageDelayed(mHandler.obtainMessage(messageB), 2000); |
| 254 | mTestLooper.moveTimeForward(3000); |
| 255 | mTestLooper.dispatchAll(); |
| 256 | |
| 257 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 258 | collector.checkThat("3: messageC", messageC, equalTo(messageCaptor.getValue().what)); |
| 259 | inOrder.verify(mHandlerSpy).handleMessage(messageCaptor.capture()); |
| 260 | collector.checkThat("4: messageB", messageB, equalTo(messageCaptor.getValue().what)); |
| 261 | |
| 262 | inOrder.verify(mHandlerSpy, never()).handleMessage(any(Message.class)); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Test AutoDispatch for a single message. |
| 267 | * This test would ideally use the Channel sendMessageSynchronously. At this time, the setup to |
| 268 | * get a working test channel is cumbersome. Until this is fixed, we substitute with a |
| 269 | * sendMessage followed by a blocking call. The main test thread blocks until the test handler |
| 270 | * receives the test message (messageA) and sets a boolean true. Once the boolean is true, the |
| 271 | * main thread will exit the busy wait loop, stop autoDispatch and check the assert. |
| 272 | * |
| 273 | * Enable AutoDispatch, add message, block on message being handled and stop AutoDispatch. |
| 274 | * <p> |
| 275 | * Expected: handleMessage is called for messageA and stopAutoDispatch is called. |
| 276 | */ |
| 277 | @Test |
| 278 | public void testAutoDispatchWithSingleMessage() { |
| 279 | final int mLoopSleepTimeMs = 5; |
| 280 | |
| 281 | final int messageA = 1; |
| 282 | |
| 283 | TestLooper mockLooper = new TestLooper(); |
| 284 | class TestHandler extends Handler { |
| 285 | public volatile boolean handledMessage = false; |
| 286 | TestHandler(Looper looper) { |
| 287 | super(looper); |
| 288 | } |
| 289 | |
| 290 | @Override |
| 291 | public void handleMessage(Message msg) { |
| 292 | if (msg.what == messageA) { |
| 293 | handledMessage = true; |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | TestHandler testHandler = new TestHandler(mockLooper.getLooper()); |
| 299 | mockLooper.startAutoDispatch(); |
| 300 | testHandler.sendMessage(testHandler.obtainMessage(messageA)); |
| 301 | while (!testHandler.handledMessage) { |
| 302 | // Block until message is handled |
| 303 | try { |
| 304 | Thread.sleep(mLoopSleepTimeMs); |
| 305 | } catch (InterruptedException e) { |
| 306 | // Interrupted while sleeping. |
| 307 | } |
| 308 | } |
| 309 | mockLooper.stopAutoDispatch(); |
| 310 | assertTrue("TestHandler should have received messageA", testHandler.handledMessage); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Test starting AutoDispatch while already running throws IllegalStateException |
| 315 | * Enable AutoDispatch two times in a row. |
| 316 | * <p> |
| 317 | * Expected: catch IllegalStateException on second call. |
| 318 | */ |
| 319 | @Test(expected = IllegalStateException.class) |
| 320 | public void testRepeatedStartAutoDispatchThrowsException() { |
| 321 | mTestLooper.startAutoDispatch(); |
| 322 | mTestLooper.startAutoDispatch(); |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Test stopping AutoDispatch without previously starting throws IllegalStateException |
| 327 | * Stop AutoDispatch |
| 328 | * <p> |
| 329 | * Expected: catch IllegalStateException on second call. |
| 330 | */ |
| 331 | @Test(expected = IllegalStateException.class) |
| 332 | public void testStopAutoDispatchWithoutStartThrowsException() { |
| 333 | mTestLooper.stopAutoDispatch(); |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Test AutoDispatch exits and does not dispatch a later message. |
| 338 | * Start and stop AutoDispatch then add a message. |
| 339 | * <p> |
| 340 | * Expected: After AutoDispatch is stopped, dispatchAll will return 1. |
| 341 | */ |
| 342 | @Test |
| 343 | public void testAutoDispatchStopsCleanlyWithoutDispatchingAMessage() { |
| 344 | final int messageA = 1; |
| 345 | |
| 346 | InOrder inOrder = inOrder(mHandlerSpy); |
| 347 | ArgumentCaptor<Message> messageCaptor = ArgumentCaptor.forClass(Message.class); |
| 348 | |
| 349 | mTestLooper.startAutoDispatch(); |
| 350 | try { |
| 351 | mTestLooper.stopAutoDispatch(); |
| 352 | } catch (IllegalStateException e) { |
| 353 | // Stopping without a dispatch will throw an exception. |
| 354 | } |
| 355 | |
| 356 | mHandlerSpy.sendMessage(mHandler.obtainMessage(messageA)); |
| 357 | assertEquals("One message should be dispatched", 1, mTestLooper.dispatchAll()); |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Test AutoDispatch throws an exception when no messages are dispatched. |
| 362 | * Start and stop AutoDispatch |
| 363 | * <p> |
| 364 | * Expected: Exception is thrown with the stopAutoDispatch call. |
| 365 | */ |
| 366 | @Test(expected = IllegalStateException.class) |
| 367 | public void testAutoDispatchThrowsExceptionWhenNoMessagesDispatched() { |
| 368 | mTestLooper.startAutoDispatch(); |
| 369 | mTestLooper.stopAutoDispatch(); |
| 370 | } |
| 371 | } |