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 androidx.lifecycle; 18 19 import static androidx.lifecycle.Lifecycle.Event.ON_ANY; 20 import static androidx.lifecycle.Lifecycle.Event.ON_RESUME; 21 22 import static org.hamcrest.CoreMatchers.instanceOf; 23 import static org.hamcrest.CoreMatchers.is; 24 import static org.hamcrest.MatcherAssert.assertThat; 25 import static org.mockito.Mockito.mock; 26 import static org.mockito.Mockito.when; 27 28 import static java.util.Arrays.asList; 29 import static java.util.Collections.singletonList; 30 31 import org.junit.Before; 32 import org.junit.Test; 33 import org.junit.runner.RunWith; 34 import org.junit.runners.JUnit4; 35 36 import java.util.ArrayList; 37 import java.util.List; 38 39 @RunWith(JUnit4.class) 40 public class GeneratedAdaptersTest { 41 42 private LifecycleOwner mOwner; 43 @SuppressWarnings("FieldCanBeLocal") 44 private Lifecycle mLifecycle; 45 46 @Before 47 public void initMocks() { 48 mOwner = mock(LifecycleOwner.class); 49 mLifecycle = mock(Lifecycle.class); 50 when(mOwner.getLifecycle()).thenReturn(mLifecycle); 51 } 52 53 static class SimpleObserver implements LifecycleObserver { 54 List<String> mLog; 55 56 SimpleObserver(List<String> log) { 57 mLog = log; 58 } 59 60 @OnLifecycleEvent(Lifecycle.Event.ON_CREATE) 61 void onCreate() { 62 mLog.add("onCreate"); 63 } 64 } 65 66 @Test 67 public void testSimpleSingleGeneratedAdapter() { 68 List<String> actual = new ArrayList<>(); 69 GenericLifecycleObserver callback = Lifecycling.getCallback(new SimpleObserver(actual)); 70 callback.onStateChanged(mOwner, Lifecycle.Event.ON_CREATE); 71 assertThat(callback, instanceOf(SingleGeneratedAdapterObserver.class)); 72 assertThat(actual, is(singletonList("onCreate"))); 73 } 74 75 static class TestObserver implements LifecycleObserver { 76 List<String> mLog; 77 78 TestObserver(List<String> log) { 79 mLog = log; 80 } 81 82 @OnLifecycleEvent(Lifecycle.Event.ON_CREATE) 83 void onCreate() { 84 mLog.add("onCreate"); 85 } 86 87 @OnLifecycleEvent(ON_ANY) 88 void onAny() { 89 mLog.add("onAny"); 90 } 91 } 92 93 @Test 94 public void testOnAny() { 95 List<String> actual = new ArrayList<>(); 96 GenericLifecycleObserver callback = Lifecycling.getCallback(new TestObserver(actual)); 97 callback.onStateChanged(mOwner, Lifecycle.Event.ON_CREATE); 98 assertThat(callback, instanceOf(SingleGeneratedAdapterObserver.class)); 99 assertThat(actual, is(asList("onCreate", "onAny"))); 100 } 101 102 interface OnPauses extends LifecycleObserver { 103 @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE) 104 void onPause(); 105 106 @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE) 107 void onPause(LifecycleOwner owner); 108 } 109 110 interface OnPauseResume extends LifecycleObserver { 111 @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE) 112 void onPause(); 113 114 @OnLifecycleEvent(Lifecycle.Event.ON_RESUME) 115 void onResume(); 116 } 117 118 class Impl1 implements OnPauses, OnPauseResume { 119 120 List<String> mLog; 121 122 Impl1(List<String> log) { 123 mLog = log; 124 } 125 126 @Override 127 public void onPause() { 128 mLog.add("onPause_0"); 129 } 130 131 @Override 132 public void onResume() { 133 mLog.add("onResume"); 134 } 135 136 @Override 137 public void onPause(LifecycleOwner owner) { 138 mLog.add("onPause_1"); 139 } 140 } 141 142 @Test 143 public void testClashingInterfaces() { 144 List<String> actual = new ArrayList<>(); 145 GenericLifecycleObserver callback = Lifecycling.getCallback(new Impl1(actual)); 146 callback.onStateChanged(mOwner, Lifecycle.Event.ON_PAUSE); 147 assertThat(callback, instanceOf(CompositeGeneratedAdaptersObserver.class)); 148 assertThat(actual, is(asList("onPause_0", "onPause_1"))); 149 actual.clear(); 150 callback.onStateChanged(mOwner, Lifecycle.Event.ON_RESUME); 151 assertThat(actual, is(singletonList("onResume"))); 152 } 153 154 class Base implements LifecycleObserver { 155 156 List<String> mLog; 157 158 Base(List<String> log) { 159 mLog = log; 160 } 161 162 @OnLifecycleEvent(ON_ANY) 163 void onAny() { 164 mLog.add("onAny_0"); 165 } 166 167 @OnLifecycleEvent(ON_ANY) 168 void onAny(LifecycleOwner owner) { 169 mLog.add("onAny_1"); 170 } 171 172 @OnLifecycleEvent(Lifecycle.Event.ON_RESUME) 173 void onResume() { 174 mLog.add("onResume"); 175 } 176 } 177 178 interface OnAny extends LifecycleObserver { 179 @OnLifecycleEvent(ON_ANY) 180 void onAny(); 181 182 @OnLifecycleEvent(ON_ANY) 183 void onAny(LifecycleOwner owner, Lifecycle.Event event); 184 } 185 186 class Derived extends Base implements OnAny { 187 Derived(List<String> log) { 188 super(log); 189 } 190 191 @Override 192 public void onAny() { 193 super.onAny(); 194 } 195 196 @Override 197 public void onAny(LifecycleOwner owner, Lifecycle.Event event) { 198 mLog.add("onAny_2"); 199 assertThat(event, is(ON_RESUME)); 200 } 201 } 202 203 @Test 204 public void testClashingClassAndInterface() { 205 List<String> actual = new ArrayList<>(); 206 GenericLifecycleObserver callback = Lifecycling.getCallback(new Derived(actual)); 207 callback.onStateChanged(mOwner, Lifecycle.Event.ON_RESUME); 208 assertThat(callback, instanceOf(CompositeGeneratedAdaptersObserver.class)); 209 assertThat(actual, is(asList("onResume", "onAny_0", "onAny_1", "onAny_2"))); 210 } 211 212 } 213