| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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.android.server.wm.utils; |
| |
| import static android.util.Pair.create; |
| |
| import static org.hamcrest.Matchers.equalTo; |
| import static org.hamcrest.Matchers.is; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertThat; |
| |
| import android.platform.test.annotations.Presubmit; |
| import android.util.Pair; |
| |
| import androidx.test.filters.FlakyTest; |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| @FlakyTest(bugId = 74078662) |
| @Presubmit |
| public class RotationCacheTest { |
| |
| private RotationCache<Object, Pair<Object, Integer>> mCache; |
| private boolean mComputationCalled; |
| |
| @Before |
| public void setUp() throws Exception { |
| mComputationCalled = false; |
| mCache = new RotationCache<>((o, rot) -> { |
| mComputationCalled = true; |
| return create(o, rot); |
| }); |
| } |
| |
| @Test |
| public void getOrCompute_computes() throws Exception { |
| assertThat(mCache.getOrCompute("hello", 0), equalTo(create("hello", 0))); |
| assertThat(mCache.getOrCompute("hello", 1), equalTo(create("hello", 1))); |
| assertThat(mCache.getOrCompute("hello", 2), equalTo(create("hello", 2))); |
| assertThat(mCache.getOrCompute("hello", 3), equalTo(create("hello", 3))); |
| } |
| |
| @Test |
| public void getOrCompute_sameParam_sameRot_hitsCache() throws Exception { |
| assertNotNull(mCache.getOrCompute("hello", 1)); |
| |
| mComputationCalled = false; |
| assertThat(mCache.getOrCompute("hello", 1), equalTo(create("hello", 1))); |
| assertThat(mComputationCalled, is(false)); |
| } |
| |
| @Test |
| public void getOrCompute_sameParam_hitsCache_forAllRots() throws Exception { |
| assertNotNull(mCache.getOrCompute("hello", 3)); |
| assertNotNull(mCache.getOrCompute("hello", 2)); |
| assertNotNull(mCache.getOrCompute("hello", 1)); |
| assertNotNull(mCache.getOrCompute("hello", 0)); |
| |
| mComputationCalled = false; |
| assertThat(mCache.getOrCompute("hello", 1), equalTo(create("hello", 1))); |
| assertThat(mCache.getOrCompute("hello", 0), equalTo(create("hello", 0))); |
| assertThat(mCache.getOrCompute("hello", 2), equalTo(create("hello", 2))); |
| assertThat(mCache.getOrCompute("hello", 3), equalTo(create("hello", 3))); |
| assertThat(mComputationCalled, is(false)); |
| } |
| |
| @Test |
| public void getOrCompute_changingParam_recomputes() throws Exception { |
| assertNotNull(mCache.getOrCompute("hello", 1)); |
| |
| assertThat(mCache.getOrCompute("world", 1), equalTo(create("world", 1))); |
| } |
| |
| @Test |
| public void getOrCompute_changingParam_clearsCacheForDifferentRots() throws Exception { |
| assertNotNull(mCache.getOrCompute("hello", 1)); |
| assertNotNull(mCache.getOrCompute("world", 2)); |
| |
| mComputationCalled = false; |
| assertThat(mCache.getOrCompute("hello", 1), equalTo(create("hello", 1))); |
| assertThat(mComputationCalled, is(true)); |
| } |
| } |