| // Copyright 2018 The Feed Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.android.libraries.feed.piet.ui; |
| |
| import static com.google.android.libraries.feed.common.testing.RunnableSubject.assertThatRunnable; |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import android.graphics.Bitmap; |
| import com.google.android.libraries.feed.piet.ui.RoundedCornerMaskCache.Corner; |
| import com.google.android.libraries.feed.piet.ui.RoundedCornerMaskCache.RoundedCornerBitmaps; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.robolectric.RobolectricTestRunner; |
| |
| /** Tests for the {@link RoundedCornerMaskCache}. */ |
| @RunWith(RobolectricTestRunner.class) |
| public class RoundedCornerMaskCacheTest { |
| |
| private RoundedCornerMaskCache cache; |
| |
| @Before |
| public void setUp() { |
| cache = new RoundedCornerMaskCache(); |
| } |
| |
| @Test |
| public void testGetBitmaps_createsNewInstance() { |
| RoundedCornerBitmaps masks = cache.getMasks(16); |
| |
| for (int i = 0; i < 4; i++) { |
| Bitmap mask = masks.get(i); |
| assertThat(mask.getWidth()).isEqualTo(16); |
| assertThat(mask.getHeight()).isEqualTo(16); |
| } |
| } |
| |
| @Test |
| public void testGetBitmaps_differentRadii() { |
| RoundedCornerBitmaps masksFive = cache.getMasks(5); |
| RoundedCornerBitmaps masksTen = cache.getMasks(10); |
| |
| assertThat(masksFive).isNotEqualTo(masksTen); |
| |
| Bitmap maskFive = masksFive.get(Corner.TOP_LEFT); |
| Bitmap maskTen = masksTen.get(Corner.TOP_LEFT); |
| |
| assertThat(maskFive).isNotEqualTo(maskTen); |
| assertThat(maskFive.getWidth()).isEqualTo(5); |
| assertThat(maskTen.getWidth()).isEqualTo(10); |
| } |
| |
| @Test |
| public void testGetBitmaps_cachesInstance() { |
| RoundedCornerBitmaps masks1 = cache.getMasks(16); |
| |
| RoundedCornerBitmaps masks2 = cache.getMasks(16); |
| |
| assertThat(masks1).isSameAs(masks2); |
| } |
| |
| @Test |
| public void testPurge() { |
| RoundedCornerBitmaps masks1 = cache.getMasks(16); |
| |
| cache.purge(); |
| |
| RoundedCornerBitmaps masks2 = cache.getMasks(16); |
| |
| assertThat(masks1).isNotSameInstanceAs(masks2); |
| } |
| |
| @Test |
| public void testBadCornerException() { |
| RoundedCornerBitmaps masks = cache.getMasks(16); |
| |
| assertThatRunnable(() -> masks.get(999)) |
| .throwsAnExceptionOfType(IllegalArgumentException.class); |
| } |
| |
| @Test |
| public void testCreatesOnlyRequestedCorners() { |
| RoundedCornerBitmaps masks = cache.getMasks(123); |
| |
| assertThat(masks.masks[Corner.TOP_LEFT]).isNull(); |
| assertThat(masks.masks[Corner.TOP_RIGHT]).isNull(); |
| assertThat(masks.masks[Corner.BOTTOM_LEFT]).isNull(); |
| assertThat(masks.masks[Corner.BOTTOM_RIGHT]).isNull(); |
| |
| masks.get(Corner.TOP_RIGHT); |
| |
| assertThat(masks.masks[Corner.TOP_LEFT]).isNull(); |
| assertThat(masks.masks[Corner.TOP_RIGHT]).isNotNull(); |
| assertThat(masks.masks[Corner.BOTTOM_LEFT]).isNull(); |
| assertThat(masks.masks[Corner.BOTTOM_RIGHT]).isNull(); |
| } |
| } |