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      1 /*
      2  * Copyright (C) 2017 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.server.wm;
     18 
     19 import static android.view.WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW;
     20 import static junit.framework.Assert.assertNotNull;
     21 import static junit.framework.Assert.assertNull;
     22 
     23 import android.platform.test.annotations.Presubmit;
     24 import android.support.test.filters.SmallTest;
     25 import android.support.test.runner.AndroidJUnit4;
     26 
     27 import org.junit.Before;
     28 import org.junit.Test;
     29 import org.junit.runner.RunWith;
     30 
     31 /**
     32  * Test class for {@link TaskSnapshotCache}.
     33  *
     34  * runtest frameworks-services -c com.android.server.wm.TaskSnapshotCacheTest
     35  */
     36 @SmallTest
     37 @Presubmit
     38 @RunWith(AndroidJUnit4.class)
     39 public class TaskSnapshotCacheTest extends TaskSnapshotPersisterTestBase {
     40 
     41     private TaskSnapshotCache mCache;
     42 
     43     @Before
     44     public void setUp() throws Exception {
     45         super.setUp();
     46         mCache = new TaskSnapshotCache(sWm, mLoader);
     47     }
     48 
     49     @Test
     50     public void testAppRemoved() throws Exception {
     51         final WindowState window = createWindow(null, FIRST_APPLICATION_WINDOW, "window");
     52         mCache.putSnapshot(window.getTask(), createSnapshot());
     53         assertNotNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     54                 false /* restoreFromDisk */, false /* reducedResolution */));
     55         mCache.onAppRemoved(window.mAppToken);
     56         assertNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     57                 false /* restoreFromDisk */, false /* reducedResolution */));
     58     }
     59 
     60     @Test
     61     public void testAppDied() throws Exception {
     62         final WindowState window = createWindow(null, FIRST_APPLICATION_WINDOW, "window");
     63         mCache.putSnapshot(window.getTask(), createSnapshot());
     64         assertNotNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     65                 false /* restoreFromDisk */, false /* reducedResolution */));
     66         mCache.onAppDied(window.mAppToken);
     67         assertNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     68                 false /* restoreFromDisk */, false /* reducedResolution */));
     69     }
     70 
     71     @Test
     72     public void testTaskRemoved() throws Exception {
     73         final WindowState window = createWindow(null, FIRST_APPLICATION_WINDOW, "window");
     74         mCache.putSnapshot(window.getTask(), createSnapshot());
     75         assertNotNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     76                 false /* restoreFromDisk */, false /* reducedResolution */));
     77         mCache.onTaskRemoved(window.getTask().mTaskId);
     78         assertNull(mCache.getSnapshot(window.getTask().mTaskId, 0 /* userId */,
     79                 false /* restoreFromDisk */, false /* reducedResolution */));
     80     }
     81 
     82     @Test
     83     public void testReduced_notCached() throws Exception {
     84         final WindowState window = createWindow(null, FIRST_APPLICATION_WINDOW, "window");
     85         mPersister.persistSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId, createSnapshot());
     86         mPersister.waitForQueueEmpty();
     87         assertNull(mCache.getSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId,
     88                 false /* restoreFromDisk */, false /* reducedResolution */));
     89 
     90         // Load it from disk
     91         assertNotNull(mCache.getSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId,
     92                 true /* restoreFromDisk */, true /* reducedResolution */));
     93 
     94         // Make sure it's not in the cache now.
     95         assertNull(mCache.getSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId,
     96                 false /* restoreFromDisk */, false /* reducedResolution */));
     97     }
     98 
     99     @Test
    100     public void testRestoreFromDisk() throws Exception {
    101         final WindowState window = createWindow(null, FIRST_APPLICATION_WINDOW, "window");
    102         mPersister.persistSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId, createSnapshot());
    103         mPersister.waitForQueueEmpty();
    104         assertNull(mCache.getSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId,
    105                 false /* restoreFromDisk */, false /* reducedResolution */));
    106 
    107         // Load it from disk
    108         assertNotNull(mCache.getSnapshot(window.getTask().mTaskId, sWm.mCurrentUserId,
    109                 true /* restoreFromDisk */, false /* reducedResolution */));
    110     }
    111 }
    112