| /* |
| * Copyright (C) 2016 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 android.app; |
| |
| import static junit.framework.TestCase.assertNotNull; |
| import static junit.framework.TestCase.assertNotSame; |
| import static junit.framework.TestCase.assertSame; |
| |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| import android.os.Parcelable; |
| import android.support.test.filters.MediumTest; |
| import android.support.test.rule.ActivityTestRule; |
| import android.support.test.runner.AndroidJUnit4; |
| import android.util.ArrayMap; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| public class LoaderLifecycleTest { |
| @Rule |
| public ActivityTestRule<EmptyActivity> mActivityRule = |
| new ActivityTestRule<>(EmptyActivity.class); |
| @Test |
| @MediumTest |
| public void loaderIdentityTest() throws Throwable{ |
| mActivityRule.runOnUiThread(() -> { |
| final Handler h = new Handler(); |
| final FragmentController fc1 = FragmentController.createController( |
| new TestFragmentHostCallback(mActivityRule.getActivity(), h, 0)); |
| |
| fc1.attachHost(null); |
| fc1.dispatchCreate(); |
| |
| final FragmentManager fm1 = fc1.getFragmentManager(); |
| |
| final Fragment f1 = new Fragment(); |
| fm1.beginTransaction().add(f1, "one").commitNow(); |
| |
| // Removing and re-adding a fragment completely will destroy its LoaderManager. |
| // Keep the first one here to confirm this later. |
| final LoaderManager lm1 = f1.getLoaderManager(); |
| |
| // Remove the fragment, add a second one, and re-add the first to |
| // force its internal index to change. The tests below should still remain consistent. |
| final Fragment f2 = new Fragment(); |
| fm1.beginTransaction().remove(f1).commitNow(); |
| fm1.beginTransaction().add(f2, "two").commitNow(); |
| fm1.beginTransaction().add(f1, "one").commitNow(); |
| |
| // We'll check this to see if we get the same instance back later |
| // as passed through NonConfigurationInstance. If the keys stay consistent |
| // across fragment remove/re-add, this will be consistent. |
| final LoaderManager lm12 = f1.getLoaderManager(); |
| |
| assertNotSame("fully removed and re-added fragment got same LoaderManager", lm1, lm12); |
| |
| fc1.dispatchActivityCreated(); |
| fc1.noteStateNotSaved(); |
| fc1.execPendingActions(); |
| fc1.doLoaderStart(); |
| fc1.dispatchStart(); |
| fc1.reportLoaderStart(); |
| fc1.dispatchResume(); |
| fc1.execPendingActions(); |
| |
| // Bring the state back down to destroyed, simulating an activity restart |
| fc1.dispatchPause(); |
| final Parcelable savedState = fc1.saveAllState(); |
| fc1.doLoaderStop(true); |
| fc1.dispatchStop(); |
| final FragmentManagerNonConfig nonconf = fc1.retainNestedNonConfig(); |
| |
| final ArrayMap<String, LoaderManager> loaderNonConfig = fc1.retainLoaderNonConfig(); |
| assertNotNull("loaderNonConfig was null", loaderNonConfig); |
| |
| fc1.dispatchDestroy(); |
| |
| // Create the new controller and restore state |
| final FragmentController fc2 = FragmentController.createController( |
| new TestFragmentHostCallback(mActivityRule.getActivity(), h, 0)); |
| |
| final FragmentManager fm2 = fc2.getFragmentManager(); |
| |
| fc2.attachHost(null); |
| // Make sure nothing blows up on a null here |
| fc2.restoreLoaderNonConfig(null); |
| // for real this time |
| fc2.restoreLoaderNonConfig(loaderNonConfig); |
| fc2.restoreAllState(savedState, nonconf); |
| fc2.dispatchCreate(); |
| |
| |
| fc2.dispatchActivityCreated(); |
| fc2.noteStateNotSaved(); |
| fc2.execPendingActions(); |
| fc2.doLoaderStart(); |
| fc2.dispatchStart(); |
| fc2.reportLoaderStart(); |
| fc2.dispatchResume(); |
| fc2.execPendingActions(); |
| |
| // Test that the fragments are in the configuration we expect |
| final Fragment restoredOne = fm2.findFragmentByTag("one"); |
| final LoaderManager lm2 = restoredOne.getLoaderManager(); |
| |
| assertSame("didn't get same LoaderManager instance back", lm2, lm12); |
| |
| // Bring the state back down to destroyed before we finish the test |
| fc2.dispatchPause(); |
| fc2.saveAllState(); |
| fc2.dispatchStop(); |
| fc2.dispatchDestroy(); |
| }); |
| } |
| |
| @Test |
| @MediumTest |
| public void backStackLoaderIdentityTest() throws Throwable{ |
| mActivityRule.runOnUiThread(() -> { |
| final Handler h = new Handler(); |
| final FragmentHostCallback host1 = |
| new TestFragmentHostCallback(mActivityRule.getActivity(), h, 0); |
| final FragmentController fc1 = FragmentController.createController(host1); |
| |
| fc1.attachHost(null); |
| fc1.dispatchCreate(); |
| |
| final FragmentManager fm1 = fc1.getFragmentManager(); |
| |
| final Fragment f1 = new Fragment(); |
| fm1.beginTransaction().add(f1, "one").commitNow(); |
| |
| final LoaderManager lm1 = f1.getLoaderManager(); |
| |
| // Put the fragment on the back stack. |
| fm1.beginTransaction().remove(f1).addToBackStack("backentry").commit(); |
| fm1.executePendingTransactions(); |
| |
| fc1.dispatchActivityCreated(); |
| fc1.noteStateNotSaved(); |
| fc1.execPendingActions(); |
| fc1.doLoaderStart(); |
| fc1.dispatchStart(); |
| fc1.reportLoaderStart(); |
| fc1.dispatchResume(); |
| fc1.execPendingActions(); |
| |
| // Bring the state back down to destroyed, simulating an activity restart |
| fc1.dispatchPause(); |
| final Parcelable savedState = fc1.saveAllState(); |
| fc1.doLoaderStop(true); |
| fc1.dispatchStop(); |
| final FragmentManagerNonConfig nonconf = fc1.retainNestedNonConfig(); |
| |
| final ArrayMap<String, LoaderManager> loaderNonConfig = fc1.retainLoaderNonConfig(); |
| assertNotNull("loaderNonConfig was null", loaderNonConfig); |
| |
| fc1.dispatchDestroy(); |
| |
| // Create the new controller and restore state |
| final FragmentHostCallback host2 = |
| new TestFragmentHostCallback(mActivityRule.getActivity(), h, 0); |
| final FragmentController fc2 = FragmentController.createController(host2); |
| |
| final FragmentManager fm2 = fc2.getFragmentManager(); |
| |
| fc2.attachHost(null); |
| fc2.restoreLoaderNonConfig(loaderNonConfig); |
| fc2.restoreAllState(savedState, nonconf); |
| fc2.dispatchCreate(); |
| |
| |
| fc2.dispatchActivityCreated(); |
| fc2.noteStateNotSaved(); |
| fc2.execPendingActions(); |
| fc2.doLoaderStart(); |
| fc2.dispatchStart(); |
| fc2.reportLoaderStart(); |
| fc2.dispatchResume(); |
| fc2.execPendingActions(); |
| |
| assertNotSame("LoaderManager kept reference to old FragmentHostCallback", |
| host1, lm1.getFragmentHostCallback()); |
| assertSame("LoaderManager did not refrence new FragmentHostCallback", |
| host2, lm1.getFragmentHostCallback()); |
| |
| // Test that the fragments are in the configuration we expect |
| final Fragment restoredOne = fm2.findFragmentByTag("one"); |
| try { |
| restoredOne.getLoaderManager(); |
| fail("A restored fragment on the back stack doesn't have a host, so it should " |
| + "throw an exception"); |
| } catch (IllegalStateException e) { |
| // expected |
| } |
| fm2.popBackStackImmediate(); |
| // Now restoredOne should be added and should be in a good state. |
| assertTrue(restoredOne.isAdded()); |
| final LoaderManager lm2 = restoredOne.getLoaderManager(); |
| |
| assertSame("didn't get same LoaderManager instance back", lm2, lm1); |
| |
| // Bring the state back down to destroyed before we finish the test |
| fc2.dispatchPause(); |
| fc2.saveAllState(); |
| fc2.dispatchStop(); |
| fc2.dispatchDestroy(); |
| }); |
| } |
| |
| public class TestFragmentHostCallback extends FragmentHostCallback<LoaderLifecycleTest> { |
| public TestFragmentHostCallback(Context context, Handler handler, int windowAnimations) { |
| super(context, handler, windowAnimations); |
| } |
| |
| @Override |
| public LoaderLifecycleTest onGetHost() { |
| return LoaderLifecycleTest.this; |
| } |
| } |
| } |