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package com.bumptech.glide.load.engine.bitmap_recycle;
import android.graphics.Bitmap;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.shadows.ShadowBitmap;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import static android.content.ComponentCallbacks2.TRIM_MEMORY_BACKGROUND;
import static android.content.ComponentCallbacks2.TRIM_MEMORY_COMPLETE;
import static android.content.ComponentCallbacks2.TRIM_MEMORY_MODERATE;
import static org.hamcrest.Matchers.empty;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@RunWith(RobolectricTestRunner.class)
public class LruBitmapPoolTest {
private static final int MAX_SIZE = 10;
private MockStrategy strategy;
private LruBitmapPool pool;
@Before
public void setUp() throws Exception {
strategy = new MockStrategy();
pool = new LruBitmapPool(MAX_SIZE, strategy);
}
@Test
public void testICanAddAndGetABitmap() {
fillPool(pool, 1);
pool.put(createMutableBitmap());
assertNotNull(pool.get(100, 100, Bitmap.Config.ARGB_8888));
}
@Test
public void testImmutableBitmapsAreNotAdded() {
Bitmap bitmap = createMutableBitmap();
Robolectric.shadowOf(bitmap).setMutable(false);
pool.put(bitmap);
assertThat(strategy.bitmaps, empty());
}
@Test
public void testItIsSizeLimited() {
fillPool(pool, MAX_SIZE + 2);
assertEquals(2, strategy.numRemoves);
}
@Test
public void testBitmapLargerThanPoolIsNotAdded() {
strategy = new MockStrategy() {
@Override
public int getSize(Bitmap bitmap) {
return 4;
}
};
pool = new LruBitmapPool(3, strategy);
pool.put(createMutableBitmap());
assertEquals(0, strategy.numRemoves);
assertEquals(0, strategy.numPuts);
}
@Test
public void testClearMemoryRemovesAllBitmaps() {
fillPool(pool, MAX_SIZE);
pool.clearMemory();
assertEquals(MAX_SIZE, strategy.numRemoves);
}
@Test
public void testEvictedBitmapsAreRecycled() {
fillPool(pool, MAX_SIZE);
List<Bitmap> bitmaps = new ArrayList<Bitmap>(MAX_SIZE);
for (Bitmap b : strategy.bitmaps) {
bitmaps.add(b);
}
pool.clearMemory();
for (Bitmap b : bitmaps) {
assertTrue(b.isRecycled());
}
}
@Test
public void testTrimMemoryBackgroundOrLessRemovesHalfOfBitmaps() {
testTrimMemory(MAX_SIZE, TRIM_MEMORY_BACKGROUND, MAX_SIZE / 2);
}
@Test
public void testTrimMemoryBackgroundOrLessRemovesNoBitmapsIfPoolLessThanHalfFull() {
testTrimMemory(MAX_SIZE / 2, TRIM_MEMORY_BACKGROUND, 0);
}
@Test
public void testTrimMemoryModerateOrGreaterRemovesAllBitmaps() {
for (int trimLevel : new int[] { TRIM_MEMORY_MODERATE, TRIM_MEMORY_COMPLETE }) {
testTrimMemory(MAX_SIZE, trimLevel, MAX_SIZE);
}
}
@Test
public void testPassesArgb888ToStrategyAsConfigForRequestsWithNullConfigsOnGet() {
LruPoolStrategy strategy = mock(LruPoolStrategy.class);
LruBitmapPool pool = new LruBitmapPool(100, strategy);
Bitmap expected = createMutableBitmap();
when(strategy.get(anyInt(), anyInt(), eq(Bitmap.Config.ARGB_8888))).thenReturn(expected);
Bitmap result = pool.get(100, 100, null);
assertEquals(expected, result);
}
@Test
public void testPassesArgb8888ToStrategyAsConfigForRequestsWithNullConfigsOnGetDirty() {
LruPoolStrategy strategy = mock(LruPoolStrategy.class);
LruBitmapPool pool = new LruBitmapPool(100, strategy);
Bitmap expected = createMutableBitmap();
when(strategy.get(anyInt(), anyInt(), eq(Bitmap.Config.ARGB_8888))).thenReturn(expected);
Bitmap result = pool.getDirty(100, 100, null);
assertEquals(expected, result);
}
private void testTrimMemory(int fillSize, int trimLevel, int expectedSize) {
MockStrategy strategy = new MockStrategy();
LruBitmapPool pool = new LruBitmapPool(MAX_SIZE, strategy);
fillPool(pool, fillSize);
pool.trimMemory(trimLevel);
assertEquals("Failed level=" + trimLevel, expectedSize, strategy.numRemoves);
}
@Test
public void testCanIncreaseSizeDynamically() {
int sizeMultiplier = 2;
pool.setSizeMultiplier(2);
fillPool(pool, MAX_SIZE * sizeMultiplier);
assertEquals(0, strategy.numRemoves);
}
@Test
public void testCanDecreaseSizeDynamically() {
fillPool(pool, MAX_SIZE);
assertEquals(0, strategy.numRemoves);
float sizeMultiplier = 0.5f;
pool.setSizeMultiplier(sizeMultiplier);
assertEquals(Math.round(MAX_SIZE * sizeMultiplier), strategy.numRemoves);
}
@Test
public void testCanResetSizeDynamically() {
int sizeMultiplier = 2;
pool.setSizeMultiplier(sizeMultiplier);
fillPool(pool, MAX_SIZE * sizeMultiplier);
pool.setSizeMultiplier(1);
assertEquals(Math.round(MAX_SIZE * sizeMultiplier) - MAX_SIZE, strategy.numRemoves);
}
@Test
public void testCanGetCurrentMaxSize() {
assertEquals(MAX_SIZE, pool.getMaxSize());
}
@Test
public void testMaxSizeChangesAfterSizeMultiplier() {
pool.setSizeMultiplier(2);
assertEquals(2 * MAX_SIZE, pool.getMaxSize());
}
private void fillPool(LruBitmapPool pool, int fillCount) {
for (int i = 0; i < fillCount; i++) {
pool.put(createMutableBitmap());
}
}
private Bitmap createMutableBitmap() {
Bitmap bitmap = ShadowBitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);
Robolectric.shadowOf(bitmap).setMutable(true);
return bitmap;
}
private static class MockStrategy implements LruPoolStrategy {
private LinkedList<Bitmap> bitmaps = new LinkedList<Bitmap>();
private int numRemoves;
private int numPuts;
@Override
public void put(Bitmap bitmap) {
numPuts++;
bitmaps.add(bitmap);
}
@Override
public Bitmap get(int width, int height, Bitmap.Config config) {
return bitmaps.removeLast();
}
@Override
public Bitmap removeLast() {
numRemoves++;
return bitmaps.removeLast();
}
@Override
public String logBitmap(Bitmap bitmap) {
return null;
}
@Override
public String logBitmap(int width, int height, Bitmap.Config config) {
return null;
}
@Override
public int getSize(Bitmap bitmap) {
return 1;
}
}
}
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