| /* |
| * Copyright 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 androidx.loader.app; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import android.content.Context; |
| import android.support.test.InstrumentationRegistry; |
| import android.support.test.annotation.UiThreadTest; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import androidx.lifecycle.Lifecycle; |
| import androidx.lifecycle.LifecycleOwner; |
| import androidx.lifecycle.LifecycleRegistry; |
| import androidx.loader.app.test.DelayLoader; |
| import androidx.loader.app.test.DummyLoaderCallbacks; |
| import androidx.loader.content.Loader; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class LoaderInfoTest { |
| |
| private LifecycleOwner mOwner; |
| private LifecycleRegistry mRegistry; |
| |
| @Before |
| public void setup() { |
| mOwner = mock(LifecycleOwner.class); |
| mRegistry = new LifecycleRegistry(mOwner); |
| when(mOwner.getLifecycle()).thenReturn(mRegistry); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_CREATE); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| } |
| |
| @Test |
| public void testIsCallbackWaitingForData() throws Throwable { |
| final DummyLoaderCallbacks loaderCallback = new DummyLoaderCallbacks(mock(Context.class)); |
| final CountDownLatch deliverResultLatch = new CountDownLatch(1); |
| Loader<Boolean> delayLoader = new DelayLoader(mock(Context.class), |
| deliverResultLatch); |
| final LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, delayLoader, null); |
| assertFalse("isCallbackWaitingForData should be false before setCallback", |
| loaderInfo.isCallbackWaitingForData()); |
| |
| InstrumentationRegistry.getInstrumentation().runOnMainSync(new Runnable() { |
| @Override |
| public void run() { |
| loaderInfo.setCallback(mOwner, loaderCallback); |
| } |
| }); |
| assertTrue("isCallbackWaitingForData should be true immediately after setCallback", |
| loaderInfo.isCallbackWaitingForData()); |
| |
| assertTrue("Loader timed out delivering results", |
| deliverResultLatch.await(1, TimeUnit.SECONDS)); |
| // Results are posted to the UI thread, so we wait for them there |
| InstrumentationRegistry.getInstrumentation().runOnMainSync(new Runnable() { |
| @Override |
| public void run() { |
| assertTrue("onLoadFinished should be called after setCallback", |
| loaderCallback.mOnLoadFinished); |
| assertFalse("isCallbackWaitingForData should be false after onLoadFinished", |
| loaderInfo.isCallbackWaitingForData()); |
| } |
| }); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testSetCallback() throws Throwable { |
| final DummyLoaderCallbacks loaderCallback = new DummyLoaderCallbacks(mock(Context.class)); |
| Loader<Boolean> loader = loaderCallback.onCreateLoader(0, null); |
| final LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, loader, null); |
| assertFalse("onLoadFinished shouldn't be called before setCallback", |
| loaderCallback.mOnLoadFinished); |
| |
| loaderInfo.setCallback(mOwner, loaderCallback); |
| assertTrue("onLoadFinished should be called after setCallback", |
| loaderCallback.mOnLoadFinished); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testSetCallback_replace() throws Throwable { |
| final DummyLoaderCallbacks initialCallback = new DummyLoaderCallbacks(mock(Context.class)); |
| Loader<Boolean> loader = initialCallback.onCreateLoader(0, null); |
| LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, loader, null); |
| assertFalse("onLoadFinished for initial shouldn't be called before setCallback initial", |
| initialCallback.mOnLoadFinished); |
| |
| loaderInfo.setCallback(mOwner, initialCallback); |
| assertTrue("onLoadFinished for initial should be called after setCallback initial", |
| initialCallback.mOnLoadFinished); |
| |
| final DummyLoaderCallbacks replacementCallback = |
| new DummyLoaderCallbacks(mock(Context.class)); |
| initialCallback.mOnLoadFinished = false; |
| |
| loaderInfo.setCallback(mOwner, replacementCallback); |
| assertFalse("onLoadFinished for initial should not be called " |
| + "after setCallback replacement", |
| initialCallback.mOnLoadFinished); |
| assertTrue("onLoadFinished for replacement should be called " |
| + " after setCallback replacement", |
| replacementCallback.mOnLoadFinished); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testMarkForRedelivery() throws Throwable { |
| DummyLoaderCallbacks loaderCallback = |
| new DummyLoaderCallbacks(mock(Context.class)); |
| Loader<Boolean> loader = loaderCallback.onCreateLoader(0, null); |
| LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, loader, null); |
| loaderInfo.setCallback(mOwner, loaderCallback); |
| assertTrue("onLoadFinished should be called after setCallback", |
| loaderCallback.mOnLoadFinished); |
| |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_STOP); |
| loaderCallback.mOnLoadFinished = false; |
| loaderInfo.markForRedelivery(); |
| assertFalse("onLoadFinished should not be called when stopped after markForRedelivery", |
| loaderCallback.mOnLoadFinished); |
| |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| assertTrue("onLoadFinished should be called after markForRedelivery", |
| loaderCallback.mOnLoadFinished); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testMarkForRedelivery_replace() throws Throwable { |
| DummyLoaderCallbacks initialCallback = |
| new DummyLoaderCallbacks(mock(Context.class)); |
| Loader<Boolean> loader = initialCallback.onCreateLoader(0, null); |
| LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, loader, null); |
| loaderInfo.setCallback(mOwner, initialCallback); |
| assertTrue("onLoadFinished for initial should be called after setCallback initial", |
| initialCallback.mOnLoadFinished); |
| |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_STOP); |
| initialCallback.mOnLoadFinished = false; |
| loaderInfo.markForRedelivery(); |
| assertFalse("onLoadFinished should not be called when stopped after markForRedelivery", |
| initialCallback.mOnLoadFinished); |
| |
| // Replace the callback |
| final DummyLoaderCallbacks replacementCallback = |
| new DummyLoaderCallbacks(mock(Context.class)); |
| loaderInfo.setCallback(mOwner, replacementCallback); |
| |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| assertFalse("onLoadFinished for initial should not be called " |
| + "after setCallback replacement", |
| initialCallback.mOnLoadFinished); |
| assertTrue("onLoadFinished for replacement should be called " |
| + " after setCallback replacement", |
| replacementCallback.mOnLoadFinished); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testDestroy() throws Throwable { |
| final DummyLoaderCallbacks loaderCallback = new DummyLoaderCallbacks(mock(Context.class)); |
| final Loader<Boolean> loader = loaderCallback.onCreateLoader(0, null); |
| final LoaderManagerImpl.LoaderInfo<Boolean> loaderInfo = new LoaderManagerImpl.LoaderInfo<>( |
| 0, null, loader, null); |
| |
| loaderInfo.setCallback(mOwner, loaderCallback); |
| assertTrue("Loader should be started after setCallback", loader.isStarted()); |
| loaderInfo.destroy(true); |
| assertFalse("Loader should not be started after destroy", loader.isStarted()); |
| } |
| } |