The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 com.android.mediaframeworktest.unit; |
| 18 | |
| 19 | import android.util.Log; |
| 20 | import android.os.Looper; |
| 21 | import android.os.Handler; |
| 22 | import android.os.Message; |
| 23 | import android.media.MediaPlayer; |
| 24 | import android.test.AndroidTestCase; |
| 25 | import com.android.mediaframeworktest.MediaNames; |
| 26 | |
| 27 | /** |
| 28 | * A template class for running a method under test in all possible |
| 29 | * states of a MediaPlayer object. |
| 30 | * |
| 31 | * @see com.android.mediaframeworktest.unit.MediaPlayerSeekToStateUnitTest |
| 32 | * for an example of using this class. |
| 33 | * |
| 34 | * A typical concrete unit test class would implement the |
| 35 | * MediaPlayerMethodUnderTest interface and have a reference to an object of |
| 36 | * this class. Then it calls runTestOnMethod() to actually perform the unit |
| 37 | * tests. |
| 38 | * |
| 39 | */ |
| 40 | class MediaPlayerStateUnitTestTemplate extends AndroidTestCase { |
| 41 | private static final String TEST_PATH = MediaNames.TEST_PATH_1; |
James Dong | 2fd4e59 | 2010-11-14 14:55:56 -0800 | [diff] [blame] | 42 | private static final String TAG = "MediaPlayerStateUnitTestTemplate"; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 43 | private static final int SEEK_TO_END = 135110; // Milliseconds. |
| 44 | private static int WAIT_FOR_COMMAND_TO_COMPLETE = 1000; // Milliseconds. |
| 45 | |
| 46 | private MediaPlayerStateErrors mStateErrors = new MediaPlayerStateErrors(); |
| 47 | private MediaPlayer mMediaPlayer = null; |
| 48 | private boolean mInitialized = false; |
| 49 | private boolean mOnCompletionHasBeenCalled = false; |
| 50 | private MediaPlayerStateErrors.MediaPlayerState mMediaPlayerState = null; |
| 51 | private Looper mLooper = null; |
| 52 | private final Object lock = new Object(); |
| 53 | private MediaPlayerMethodUnderTest mMethodUnderTest = null; |
| 54 | |
| 55 | // An Handler object is absolutely necessary for receiving callback |
| 56 | // messages from MediaPlayer objects. |
| 57 | private Handler mHandler = new Handler() { |
| 58 | @Override |
| 59 | public void handleMessage(Message msg) { |
| 60 | /* |
| 61 | switch(msg.what) { |
| 62 | case MediaPlayerStateErrors.MEDIA_PLAYER_ERROR: |
| 63 | Log.v(TAG, "handleMessage: received MEDIA_PLAYER_ERROR message"); |
| 64 | break; |
| 65 | default: |
| 66 | Log.v(TAG, "handleMessage: received unknown message"); |
| 67 | break; |
| 68 | } |
| 69 | */ |
| 70 | } |
| 71 | }; |
| 72 | |
| 73 | /** |
| 74 | * Runs the given method under test in all possible states of a MediaPlayer |
| 75 | * object. |
| 76 | * |
| 77 | * @param testMethod the method under test. |
| 78 | */ |
| 79 | public void runTestOnMethod(MediaPlayerMethodUnderTest testMethod) { |
| 80 | mMethodUnderTest = testMethod; |
| 81 | if (mMethodUnderTest != null) { // Method under test has been set? |
| 82 | initializeMessageLooper(); |
| 83 | synchronized(lock) { |
| 84 | try { |
| 85 | lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE); |
| 86 | } catch(Exception e) { |
| 87 | Log.v(TAG, "runTestOnMethod: wait was interrupted."); |
| 88 | } |
| 89 | } |
| 90 | assertTrue(mInitialized); // mMediaPlayer has been initialized? |
| 91 | checkMethodUnderTestInAllPossibleStates(); |
| 92 | terminateMessageLooper(); // Release message looper thread. |
| 93 | assertTrue(mOnCompletionHasBeenCalled); |
| 94 | mMethodUnderTest.checkStateErrors(mStateErrors); |
| 95 | cleanUp(); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * Initializes the message looper so that the MediaPlayer object can |
| 101 | * receive the callback messages. |
| 102 | */ |
| 103 | private void initializeMessageLooper() { |
| 104 | new Thread() { |
| 105 | @Override |
| 106 | public void run() { |
| 107 | // Set up a looper to be used by mMediaPlayer. |
| 108 | Looper.prepare(); |
| 109 | |
| 110 | // Save the looper so that we can terminate this thread |
| 111 | // after we are done with it. |
| 112 | mLooper = Looper.myLooper(); |
| 113 | |
| 114 | mMediaPlayer = new MediaPlayer(); |
| 115 | mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() { |
| 116 | public boolean onError(MediaPlayer player, int what, int extra) { |
| 117 | Log.v(TAG, "onError has been called."); |
| 118 | synchronized(lock) { |
| 119 | Log.v(TAG, "notify lock."); |
| 120 | setStateError(mMediaPlayerState, true); |
| 121 | if (mMediaPlayerState != MediaPlayerStateErrors.MediaPlayerState.ERROR) { |
| 122 | notifyStateError(); |
| 123 | } |
| 124 | lock.notify(); |
| 125 | } |
| 126 | return true; |
| 127 | } |
| 128 | }); |
| 129 | mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { |
| 130 | public void onCompletion(MediaPlayer player) { |
| 131 | Log.v(TAG, "onCompletion has been called."); |
| 132 | synchronized(lock) { |
| 133 | if (mMediaPlayerState == MediaPlayerStateErrors.MediaPlayerState.PLAYBACK_COMPLETED) { |
| 134 | mOnCompletionHasBeenCalled = true; |
| 135 | } |
| 136 | lock.notify(); |
| 137 | } |
| 138 | } |
| 139 | }); |
| 140 | synchronized(lock) { |
| 141 | mInitialized = true; |
| 142 | lock.notify(); |
| 143 | } |
| 144 | Looper.loop(); // Blocks forever until Looper.quit() is called. |
| 145 | Log.v(TAG, "initializeMessageLooper: quit."); |
| 146 | } |
| 147 | }.start(); |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Calls method under test in the given state of the MediaPlayer object. |
| 152 | * |
| 153 | * @param state the MediaPlayer state in which the method under test is called. |
| 154 | */ |
| 155 | private void callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState state) { |
| 156 | Log.v(TAG, "call " + mMethodUnderTest + ": started in state " + state); |
| 157 | setMediaPlayerToState(state); |
| 158 | mMethodUnderTest.invokeMethodUnderTest(mMediaPlayer); |
| 159 | synchronized(lock) { |
| 160 | try { |
| 161 | lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE); |
| 162 | } catch(Exception e) { |
| 163 | Log.v(TAG, "callMediaPlayerMethodUnderTestInState: wait is interrupted in state " + state); |
| 164 | } |
| 165 | } |
| 166 | Log.v(TAG, "call " + mMethodUnderTest + ": ended in state " + state); |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * The following setMediaPlayerToXXXStateXXX methods sets the MediaPlayer |
| 171 | * object to the corresponding state, given the assumption that reset() |
| 172 | * always resets the MediaPlayer object to Idle (after reset) state. |
| 173 | */ |
| 174 | private void setMediaPlayerToIdleStateAfterReset() { |
| 175 | try { |
| 176 | mMediaPlayer.reset(); |
| 177 | mMediaPlayer.setDataSource(TEST_PATH); |
| 178 | mMediaPlayer.prepare(); |
| 179 | mMediaPlayer.reset(); |
| 180 | } catch(Exception e) { |
| 181 | Log.v(TAG, "setMediaPlayerToIdleStateAfterReset: Exception " + e.getClass().getName() + " was thrown."); |
| 182 | assertTrue(false); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | private void setMediaPlayerToInitializedState() { |
| 187 | try { |
| 188 | mMediaPlayer.reset(); |
| 189 | mMediaPlayer.setDataSource(TEST_PATH); |
| 190 | } catch(Exception e) { |
| 191 | Log.v(TAG, "setMediaPlayerToInitializedState: Exception " + e.getClass().getName() + " was thrown."); |
| 192 | assertTrue(false); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | private void setMediaPlayerToPreparedState() { |
| 197 | try { |
| 198 | mMediaPlayer.reset(); |
| 199 | mMediaPlayer.setDataSource(TEST_PATH); |
| 200 | mMediaPlayer.prepare(); |
| 201 | } catch(Exception e) { |
| 202 | Log.v(TAG, "setMediaPlayerToPreparedState: Exception " + e.getClass().getName() + " was thrown."); |
| 203 | assertTrue(false); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | private void setMediaPlayerToPreparedStateAfterStop() { |
| 208 | try { |
| 209 | mMediaPlayer.reset(); |
| 210 | mMediaPlayer.setDataSource(TEST_PATH); |
| 211 | mMediaPlayer.prepare(); |
| 212 | mMediaPlayer.start(); |
| 213 | mMediaPlayer.stop(); |
| 214 | mMediaPlayer.prepare(); |
| 215 | } catch(Exception e) { |
| 216 | Log.v(TAG, "setMediaPlayerToPreparedStateAfterStop: Exception " + e.getClass().getName() + " was thrown."); |
| 217 | assertTrue(false); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | private void setMediaPlayerToStartedState() { |
| 222 | try { |
| 223 | mMediaPlayer.reset(); |
| 224 | mMediaPlayer.setDataSource(TEST_PATH); |
| 225 | mMediaPlayer.prepare(); |
| 226 | mMediaPlayer.start(); |
| 227 | } catch(Exception e) { |
| 228 | Log.v(TAG, "setMediaPlayerToStartedState: Exception " + e.getClass().getName() + " was thrown."); |
| 229 | assertTrue(false); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | private void setMediaPlayerToStartedStateAfterPause() { |
| 234 | try { |
| 235 | mMediaPlayer.reset(); |
| 236 | mMediaPlayer.setDataSource(TEST_PATH); |
| 237 | mMediaPlayer.prepare(); |
| 238 | mMediaPlayer.start(); |
| 239 | mMediaPlayer.pause(); |
| 240 | |
| 241 | // pause() is an asynchronous call and returns immediately, but |
| 242 | // PV player engine may take quite a while to actually set the |
| 243 | // player state to Paused; if we call start() right after pause() |
| 244 | // without waiting, start() may fail. |
| 245 | try { |
| 246 | Thread.sleep(MediaNames.PAUSE_WAIT_TIME); |
| 247 | } catch(Exception ie) { |
| 248 | Log.v(TAG, "sleep was interrupted and terminated prematurely"); |
| 249 | } |
| 250 | |
| 251 | mMediaPlayer.start(); |
| 252 | } catch(Exception e) { |
| 253 | Log.v(TAG, "setMediaPlayerToStartedStateAfterPause: Exception " + e.getClass().getName() + " was thrown."); |
| 254 | assertTrue(false); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | private void setMediaPlayerToPausedState() { |
| 259 | try { |
| 260 | mMediaPlayer.reset(); |
| 261 | mMediaPlayer.setDataSource(TEST_PATH); |
| 262 | mMediaPlayer.prepare(); |
| 263 | mMediaPlayer.start(); |
| 264 | mMediaPlayer.pause(); |
| 265 | } catch(Exception e) { |
| 266 | Log.v(TAG, "setMediaPlayerToPausedState: Exception " + e.getClass().getName() + " was thrown."); |
| 267 | assertTrue(false); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | private void setMediaPlayerToStoppedState() { |
| 272 | try { |
| 273 | mMediaPlayer.reset(); |
| 274 | mMediaPlayer.setDataSource(TEST_PATH); |
| 275 | mMediaPlayer.prepare(); |
| 276 | mMediaPlayer.start(); |
| 277 | mMediaPlayer.stop(); |
| 278 | } catch(Exception e) { |
| 279 | Log.v(TAG, "setMediaPlayerToStoppedState: Exception " + e.getClass().getName() + " was thrown."); |
| 280 | assertTrue(false); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | private void setMediaPlayerToPlaybackCompletedState() { |
| 285 | try { |
| 286 | mMediaPlayer.reset(); |
| 287 | mMediaPlayer.setDataSource(TEST_PATH); |
| 288 | mMediaPlayer.prepare(); |
| 289 | mMediaPlayer.seekTo(SEEK_TO_END); |
| 290 | mMediaPlayer.start(); |
| 291 | synchronized(lock) { |
| 292 | try { |
| 293 | lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE); |
| 294 | } catch(Exception e) { |
| 295 | Log.v(TAG, "setMediaPlayerToPlaybackCompletedState: wait was interrupted."); |
| 296 | } |
| 297 | } |
| 298 | } catch(Exception e) { |
| 299 | Log.v(TAG, "setMediaPlayerToPlaybackCompletedState: Exception " + e.getClass().getName() + " was thrown."); |
| 300 | assertTrue(false); |
| 301 | } |
| 302 | Log.v(TAG, "setMediaPlayerToPlaybackCompletedState: done."); |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * There are a lot of ways to force the MediaPlayer object to enter |
| 307 | * the Error state. The impact (such as onError is called or not) highly |
| 308 | * depends on how the Error state is entered. |
| 309 | */ |
| 310 | private void setMediaPlayerToErrorState() { |
| 311 | try { |
| 312 | mMediaPlayer.reset(); |
| 313 | mMediaPlayer.setDataSource(TEST_PATH); |
| 314 | mMediaPlayer.start(); |
| 315 | synchronized(lock) { |
| 316 | try { |
| 317 | lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE); |
| 318 | } catch(Exception e) { |
| 319 | Log.v(TAG, "setMediaPlayerToErrorState: wait was interrupted."); |
| 320 | } |
| 321 | } |
| 322 | } catch(Exception e) { |
| 323 | Log.v(TAG, "setMediaPlayerToErrorState: Exception " + e.getClass().getName() + " was thrown."); |
| 324 | assertTrue(e instanceof IllegalStateException); |
| 325 | } |
| 326 | Log.v(TAG, "setMediaPlayerToErrorState: done."); |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Sets the state of the MediaPlayer object to the specified one. |
| 331 | * |
| 332 | * @param state the state of the MediaPlayer object. |
| 333 | */ |
| 334 | private void setMediaPlayerToState(MediaPlayerStateErrors.MediaPlayerState state) { |
| 335 | mMediaPlayerState = state; |
| 336 | switch(state) { |
| 337 | case IDLE: |
| 338 | // Does nothing. |
| 339 | break; |
| 340 | case IDLE_AFTER_RESET: |
| 341 | setMediaPlayerToIdleStateAfterReset(); |
| 342 | break; |
| 343 | case INITIALIZED: |
| 344 | setMediaPlayerToInitializedState(); |
| 345 | break; |
| 346 | case PREPARED: |
| 347 | setMediaPlayerToPreparedState(); |
| 348 | break; |
| 349 | case PREPARED_AFTER_STOP: |
| 350 | setMediaPlayerToPreparedStateAfterStop(); |
| 351 | break; |
| 352 | case STARTED: |
| 353 | setMediaPlayerToStartedState(); |
| 354 | break; |
| 355 | case STARTED_AFTER_PAUSE: |
| 356 | setMediaPlayerToStartedStateAfterPause(); |
| 357 | break; |
| 358 | case PAUSED: |
| 359 | setMediaPlayerToPausedState(); |
| 360 | break; |
| 361 | case STOPPED: |
| 362 | setMediaPlayerToStoppedState(); |
| 363 | break; |
| 364 | case PLAYBACK_COMPLETED: |
| 365 | setMediaPlayerToPlaybackCompletedState(); |
| 366 | break; |
| 367 | case ERROR: |
| 368 | setMediaPlayerToErrorState(); |
| 369 | break; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /* |
| 374 | * Sets the error value of the corresponding state to the given error. |
| 375 | * |
| 376 | * @param state the state of the MediaPlayer object. |
| 377 | * @param error the value of the state error to be set. |
| 378 | */ |
| 379 | private void setStateError(MediaPlayerStateErrors.MediaPlayerState state, boolean error) { |
| 380 | switch(state) { |
| 381 | case IDLE: |
| 382 | mStateErrors.errorInIdleState = error; |
| 383 | break; |
| 384 | case IDLE_AFTER_RESET: |
| 385 | mStateErrors.errorInIdleStateAfterReset = error; |
| 386 | break; |
| 387 | case INITIALIZED: |
| 388 | mStateErrors.errorInInitializedState = error; |
| 389 | break; |
| 390 | case PREPARED: |
| 391 | mStateErrors.errorInPreparedState = error; |
| 392 | break; |
| 393 | case PREPARED_AFTER_STOP: |
| 394 | mStateErrors.errorInPreparedStateAfterStop = error; |
| 395 | break; |
| 396 | case STARTED: |
| 397 | mStateErrors.errorInStartedState = error; |
| 398 | break; |
| 399 | case STARTED_AFTER_PAUSE: |
| 400 | mStateErrors.errorInStartedStateAfterPause = error; |
| 401 | break; |
| 402 | case PAUSED: |
| 403 | mStateErrors.errorInPausedState = error; |
| 404 | break; |
| 405 | case STOPPED: |
| 406 | mStateErrors.errorInStoppedState = error; |
| 407 | break; |
| 408 | case PLAYBACK_COMPLETED: |
| 409 | mStateErrors.errorInPlaybackCompletedState = error; |
| 410 | break; |
| 411 | case ERROR: |
| 412 | mStateErrors.errorInErrorState = error; |
| 413 | break; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | private void notifyStateError() { |
| 418 | mHandler.sendMessage(mHandler.obtainMessage(MediaPlayerStateErrors.MEDIA_PLAYER_ERROR)); |
| 419 | } |
| 420 | |
| 421 | private void checkIdleState() { |
| 422 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.IDLE); |
| 423 | } |
| 424 | |
| 425 | private void checkIdleStateAfterReset() { |
| 426 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.IDLE_AFTER_RESET); |
| 427 | } |
| 428 | |
| 429 | private void checkInitializedState() { |
| 430 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.INITIALIZED); |
| 431 | } |
| 432 | |
| 433 | private void checkPreparedState() { |
| 434 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.PREPARED); |
| 435 | } |
| 436 | |
| 437 | private void checkPreparedStateAfterStop() { |
| 438 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.PREPARED_AFTER_STOP); |
| 439 | } |
| 440 | |
| 441 | private void checkStartedState() { |
| 442 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.STARTED); |
| 443 | } |
| 444 | |
| 445 | private void checkPausedState() { |
| 446 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.PAUSED); |
| 447 | } |
| 448 | |
| 449 | private void checkStartedStateAfterPause() { |
| 450 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.STARTED_AFTER_PAUSE); |
| 451 | } |
| 452 | |
| 453 | private void checkStoppedState() { |
| 454 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.STOPPED); |
| 455 | } |
| 456 | |
| 457 | private void checkPlaybackCompletedState() { |
| 458 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.PLAYBACK_COMPLETED); |
| 459 | } |
| 460 | |
| 461 | private void checkErrorState() { |
| 462 | callMediaPlayerMethodUnderTestInState(MediaPlayerStateErrors.MediaPlayerState.ERROR); |
| 463 | } |
| 464 | |
| 465 | /* |
| 466 | * Checks the given method under test in all possible states of the MediaPlayer object. |
| 467 | */ |
| 468 | private void checkMethodUnderTestInAllPossibleStates() { |
| 469 | // Must be called first. |
| 470 | checkIdleState(); |
| 471 | |
| 472 | // The sequence of the following method calls should not |
| 473 | // affect the test results. |
| 474 | checkErrorState(); |
| 475 | checkIdleStateAfterReset(); |
| 476 | checkInitializedState(); |
| 477 | checkStartedState(); |
| 478 | checkStartedStateAfterPause(); |
| 479 | checkPausedState(); |
| 480 | checkPreparedState(); |
| 481 | |
| 482 | checkPreparedStateAfterStop(); |
| 483 | |
| 484 | checkPlaybackCompletedState(); |
| 485 | checkStoppedState(); |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * Terminates the message looper thread. |
| 490 | */ |
| 491 | private void terminateMessageLooper() { |
| 492 | mLooper.quit(); |
| 493 | mMediaPlayer.release(); |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * Cleans up all the internal object references. |
| 498 | */ |
| 499 | private void cleanUp() { |
| 500 | mMediaPlayer = null; |
| 501 | mMediaPlayerState = null; |
| 502 | mLooper = null; |
| 503 | mStateErrors = null; |
| 504 | mMethodUnderTest = null; |
| 505 | } |
| 506 | } |