| /* |
| * 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.navigation.fragment; |
| |
| import static org.hamcrest.CoreMatchers.equalTo; |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.CoreMatchers.notNullValue; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyNoMoreInteractions; |
| |
| import android.arch.lifecycle.Lifecycle; |
| import android.support.test.annotation.UiThreadTest; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.rule.ActivityTestRule; |
| import android.support.v4.app.Fragment; |
| import android.support.v4.app.FragmentManager; |
| |
| import androidx.navigation.NavOptions; |
| import androidx.navigation.Navigator; |
| import androidx.navigation.fragment.test.EmptyActivity; |
| import androidx.navigation.fragment.test.EmptyFragment; |
| import androidx.navigation.fragment.test.R; |
| |
| import org.hamcrest.CoreMatchers; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| @SmallTest |
| public class FragmentNavigatorTest { |
| |
| private static final int INITIAL_FRAGMENT = 1; |
| |
| @Rule |
| public ActivityTestRule<EmptyActivity> mActivityRule = |
| new ActivityTestRule<>(EmptyActivity.class); |
| |
| private EmptyActivity mEmptyActivity; |
| private FragmentManager mFragmentManager; |
| |
| @Before |
| public void setup() { |
| mEmptyActivity = mActivityRule.getActivity(); |
| mFragmentManager = mEmptyActivity.getSupportFragmentManager(); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testNavigate() { |
| FragmentNavigator fragmentNavigator = new FragmentNavigator(mEmptyActivity, |
| mFragmentManager, R.id.container); |
| FragmentNavigator.Destination destination = fragmentNavigator.createDestination(); |
| destination.setFragmentClass(EmptyFragment.class); |
| |
| fragmentNavigator.navigate(destination, null, null); |
| mFragmentManager.executePendingTransactions(); |
| Fragment fragment = mFragmentManager.findFragmentById(R.id.container); |
| assertThat("Fragment should be added", fragment, is(notNullValue())); |
| assertThat("Fragment should be the correct type", fragment, |
| is(CoreMatchers.<Fragment>instanceOf(EmptyFragment.class))); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testSingleTopInitial() { |
| FragmentNavigator fragmentNavigator = new FragmentNavigator(mEmptyActivity, |
| mFragmentManager, R.id.container); |
| FragmentNavigator.Destination destination = fragmentNavigator.createDestination(); |
| destination.setFragmentClass(EmptyFragment.class); |
| |
| fragmentNavigator.navigate(destination, null, null); |
| mFragmentManager.executePendingTransactions(); |
| Fragment fragment = mFragmentManager.findFragmentById(R.id.container); |
| assertThat("Fragment should be added", fragment, is(notNullValue())); |
| |
| fragmentNavigator.navigate(destination, null, |
| new NavOptions.Builder().setLaunchSingleTop(true).build()); |
| mFragmentManager.executePendingTransactions(); |
| Fragment replacementFragment = mFragmentManager.findFragmentById(R.id.container); |
| assertThat("Replacement Fragment should be added", replacementFragment, |
| is(notNullValue())); |
| assertThat("Replacement Fragment should be the correct type", replacementFragment, |
| is(CoreMatchers.<Fragment>instanceOf(EmptyFragment.class))); |
| assertThat("Replacement should be a new instance", replacementFragment, |
| is(not(equalTo(fragment)))); |
| assertThat("Old instance should be destroyed", fragment.getLifecycle().getCurrentState(), |
| is(equalTo(Lifecycle.State.DESTROYED))); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testSingleTop() { |
| FragmentNavigator fragmentNavigator = new FragmentNavigator(mEmptyActivity, |
| mFragmentManager, R.id.container); |
| FragmentNavigator.Destination destination = fragmentNavigator.createDestination(); |
| destination.setFragmentClass(EmptyFragment.class); |
| |
| // First push an initial Fragment |
| fragmentNavigator.navigate(destination, null, null); |
| |
| // Now push the Fragment that we want to replace with a singleTop operation |
| fragmentNavigator.navigate(destination, null, null); |
| mFragmentManager.executePendingTransactions(); |
| Fragment fragment = mFragmentManager.findFragmentById(R.id.container); |
| assertThat("Fragment should be added", fragment, is(notNullValue())); |
| |
| fragmentNavigator.navigate(destination, null, |
| new NavOptions.Builder().setLaunchSingleTop(true).build()); |
| mFragmentManager.executePendingTransactions(); |
| Fragment replacementFragment = mFragmentManager.findFragmentById(R.id.container); |
| assertThat("Replacement Fragment should be added", replacementFragment, |
| is(notNullValue())); |
| assertThat("Replacement Fragment should be the correct type", replacementFragment, |
| is(CoreMatchers.<Fragment>instanceOf(EmptyFragment.class))); |
| assertThat("Replacement should be a new instance", replacementFragment, |
| is(not(equalTo(fragment)))); |
| assertThat("Old instance should be destroyed", fragment.getLifecycle().getCurrentState(), |
| is(equalTo(Lifecycle.State.DESTROYED))); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testPopInitial() { |
| FragmentNavigator fragmentNavigator = new FragmentNavigator(mEmptyActivity, |
| mFragmentManager, R.id.container); |
| Navigator.OnNavigatorNavigatedListener listener = |
| mock(Navigator.OnNavigatorNavigatedListener.class); |
| fragmentNavigator.addOnNavigatorNavigatedListener(listener); |
| FragmentNavigator.Destination destination = fragmentNavigator.createDestination(); |
| destination.setId(INITIAL_FRAGMENT); |
| destination.setFragmentClass(EmptyFragment.class); |
| |
| // First push an initial Fragment |
| fragmentNavigator.navigate(destination, null, null); |
| verify(listener).onNavigatorNavigated( |
| fragmentNavigator, |
| INITIAL_FRAGMENT, |
| Navigator.BACK_STACK_DESTINATION_ADDED); |
| |
| // Now pop the initial Fragment |
| boolean popped = fragmentNavigator.popBackStack(); |
| assertThat("FragmentNavigator should return false when popping the initial Fragment", |
| popped, is(false)); |
| verify(listener).onNavigatorNavigated( |
| fragmentNavigator, |
| 0, |
| Navigator.BACK_STACK_DESTINATION_POPPED); |
| verifyNoMoreInteractions(listener); |
| } |
| } |
