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/*
* Copyright (C) 2017 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.arch.lifecycle;
import static android.arch.lifecycle.Lifecycle.Event.ON_PAUSE;
import static android.arch.lifecycle.Lifecycle.Event.ON_RESUME;
import static android.arch.lifecycle.Lifecycle.Event.ON_START;
import static android.arch.lifecycle.Lifecycle.Event.ON_STOP;
import static android.arch.lifecycle.TestUtils.waitTillResumed;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import android.app.Instrumentation;
import android.arch.lifecycle.Lifecycle.Event;
import android.arch.lifecycle.testapp.NavigationDialogActivity;
import android.arch.lifecycle.testapp.NavigationTestActivityFirst;
import android.arch.lifecycle.testapp.NavigationTestActivitySecond;
import android.arch.lifecycle.testapp.NonSupportActivity;
import android.content.Context;
import android.content.Intent;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.SmallTest;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;
import android.support.v4.app.FragmentActivity;
import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
@SmallTest
@RunWith(AndroidJUnit4.class)
public class ProcessOwnerTest {
@Rule
public ActivityTestRule<NavigationTestActivityFirst> activityTestRule =
new ActivityTestRule<>(NavigationTestActivityFirst.class);
static class ProcessObserver implements LifecycleObserver {
volatile boolean mChangedState;
@OnLifecycleEvent(Event.ON_ANY)
void onEvent() {
mChangedState = true;
}
}
private ProcessObserver mObserver = new ProcessObserver();
@After
public void tearDown() {
try {
// reassure that our observer is removed.
removeProcessObserver(mObserver);
} catch (Throwable throwable) {
throwable.printStackTrace();
}
}
@Test
public void testNavigation() throws Throwable {
FragmentActivity firstActivity = setupObserverOnResume();
Instrumentation.ActivityMonitor monitor = new Instrumentation.ActivityMonitor(
NavigationTestActivitySecond.class.getCanonicalName(), null, false);
Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
instrumentation.addMonitor(monitor);
Intent intent = new Intent(firstActivity, NavigationTestActivitySecond.class);
firstActivity.finish();
firstActivity.startActivity(intent);
FragmentActivity secondActivity = (FragmentActivity) monitor.waitForActivity();
assertThat("Failed to navigate", secondActivity, notNullValue());
checkProcessObserverSilent(secondActivity);
}
@Test
public void testNavigationToNonSupport() throws Throwable {
FragmentActivity firstActivity = setupObserverOnResume();
Instrumentation.ActivityMonitor monitor = new Instrumentation.ActivityMonitor(
NonSupportActivity.class.getCanonicalName(), null, false);
Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
instrumentation.addMonitor(monitor);
Intent intent = new Intent(firstActivity, NonSupportActivity.class);
firstActivity.finish();
firstActivity.startActivity(intent);
NonSupportActivity secondActivity = (NonSupportActivity) monitor.waitForActivity();
assertThat("Failed to navigate", secondActivity, notNullValue());
checkProcessObserverSilent(secondActivity);
}
@Test
public void testRecreation() throws Throwable {
FragmentActivity activity = setupObserverOnResume();
FragmentActivity recreated = TestUtils.recreateActivity(activity, activityTestRule);
assertThat("Failed to recreate", recreated, notNullValue());
checkProcessObserverSilent(recreated);
}
@Test
public void testPressHomeButton() throws Throwable {
setupObserverOnResume();
Instrumentation.ActivityMonitor monitor = new Instrumentation.ActivityMonitor(
NavigationDialogActivity.class.getCanonicalName(), null, false);
Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
instrumentation.addMonitor(monitor);
NavigationTestActivityFirst activity = activityTestRule.getActivity();
activity.startActivity(new Intent(activity, NavigationDialogActivity.class));
FragmentActivity dialogActivity = (FragmentActivity) monitor.waitForActivity();
checkProcessObserverSilent(dialogActivity);
List<Event> events = Collections.synchronizedList(new ArrayList<>());
LifecycleObserver collectingObserver = new LifecycleObserver() {
@OnLifecycleEvent(Event.ON_ANY)
public void onStateChanged(@SuppressWarnings("unused") LifecycleOwner provider,
Event event) {
events.add(event);
}
};
addProcessObserver(collectingObserver);
events.clear();
assertThat(activity.moveTaskToBack(true), is(true));
Thread.sleep(ProcessLifecycleOwner.TIMEOUT_MS * 2);
assertThat(events.toArray(), is(new Event[]{ON_PAUSE, ON_STOP}));
events.clear();
Context context = InstrumentationRegistry.getContext();
context.startActivity(new Intent(activity, NavigationDialogActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
waitTillResumed(dialogActivity, activityTestRule);
assertThat(events.toArray(), is(new Event[]{ON_START, ON_RESUME}));
removeProcessObserver(collectingObserver);
dialogActivity.finish();
}
private FragmentActivity setupObserverOnResume() throws Throwable {
FragmentActivity firstActivity = activityTestRule.getActivity();
waitTillResumed(firstActivity, activityTestRule);
addProcessObserver(mObserver);
mObserver.mChangedState = false;
return firstActivity;
}
private void addProcessObserver(LifecycleObserver observer) throws Throwable {
activityTestRule.runOnUiThread(() ->
ProcessLifecycleOwner.get().getLifecycle().addObserver(observer));
}
private void removeProcessObserver(LifecycleObserver observer) throws Throwable {
activityTestRule.runOnUiThread(() ->
ProcessLifecycleOwner.get().getLifecycle().removeObserver(observer));
}
private void checkProcessObserverSilent(FragmentActivity activity) throws Throwable {
waitTillResumed(activity, activityTestRule);
assertThat(mObserver.mChangedState, is(false));
activityTestRule.runOnUiThread(() ->
ProcessLifecycleOwner.get().getLifecycle().removeObserver(mObserver));
}
private void checkProcessObserverSilent(NonSupportActivity activity) throws Throwable {
assertThat(activity.awaitResumedState(), is(true));
assertThat(mObserver.mChangedState, is(false));
activityTestRule.runOnUiThread(() ->
ProcessLifecycleOwner.get().getLifecycle().removeObserver(mObserver));
}
}
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