1 /* 2 * Copyright 2018 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.loader.app; 18 19 import static org.junit.Assert.assertFalse; 20 import static org.junit.Assert.assertTrue; 21 import static org.mockito.Mockito.mock; 22 23 import android.content.Context; 24 import android.support.test.filters.SmallTest; 25 26 import androidx.loader.app.test.DummyLoaderCallbacks; 27 import androidx.loader.content.Loader; 28 29 import org.junit.Test; 30 import org.junit.runner.RunWith; 31 import org.junit.runners.JUnit4; 32 33 @RunWith(JUnit4.class) 34 @SmallTest 35 public class LoaderObserverTest { 36 37 @Test 38 public void testOnChanged() { 39 DummyLoaderCallbacks callback = new DummyLoaderCallbacks(mock(Context.class)); 40 @SuppressWarnings("unchecked") 41 LoaderManagerImpl.LoaderObserver<Boolean> observer = new LoaderManagerImpl.LoaderObserver<>( 42 mock(Loader.class), callback); 43 assertFalse("LoaderObserver should not have delivered data before onChanged", 44 observer.hasDeliveredData()); 45 assertFalse("onLoadFinished should not be called before onChanged", 46 callback.mOnLoadFinished); 47 48 49 observer.onChanged(true); 50 assertTrue("LoaderObserver should have delivered data after onChanged", 51 observer.hasDeliveredData()); 52 assertTrue("onLoadFinished should be called after onChanged", 53 callback.mOnLoadFinished); 54 } 55 56 @Test 57 public void testReset() { 58 DummyLoaderCallbacks callback = new DummyLoaderCallbacks(mock(Context.class)); 59 @SuppressWarnings("unchecked") 60 LoaderManagerImpl.LoaderObserver<Boolean> observer = new LoaderManagerImpl.LoaderObserver<>( 61 mock(Loader.class), callback); 62 assertFalse("onLoaderReset shouldn't be called before onChanged+reset", 63 callback.mOnLoaderReset); 64 65 observer.reset(); 66 assertFalse("onLoaderReset should not be called after only reset", 67 callback.mOnLoaderReset); 68 } 69 70 @Test 71 public void testResetWithOnChanged() { 72 DummyLoaderCallbacks callback = new DummyLoaderCallbacks(mock(Context.class)); 73 @SuppressWarnings("unchecked") 74 LoaderManagerImpl.LoaderObserver<Boolean> observer = new LoaderManagerImpl.LoaderObserver<>( 75 mock(Loader.class), callback); 76 assertFalse("onLoaderReset shouldn't be called before onChanged+reset", 77 callback.mOnLoaderReset); 78 79 observer.onChanged(true); 80 observer.reset(); 81 assertTrue("onLoaderReset should be called after onChanged+reset", 82 callback.mOnLoaderReset); 83 } 84 } 85
