| /* |
| * Copyright 2019 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 android.app.AlertDialog |
| import android.app.Dialog |
| import android.os.Bundle |
| import androidx.fragment.app.DialogFragment |
| import androidx.fragment.app.Fragment |
| import androidx.fragment.app.FragmentFactory |
| import androidx.fragment.app.FragmentManager |
| import androidx.navigation.NavBackStackEntry |
| import androidx.navigation.NavController |
| import androidx.navigation.Navigation |
| import androidx.navigation.testing.TestNavigatorState |
| import androidx.test.annotation.UiThreadTest |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.LargeTest |
| import com.google.common.truth.Truth.assertThat |
| import com.google.common.truth.Truth.assertWithMessage |
| import org.junit.Before |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import kotlin.reflect.KClass |
| |
| @LargeTest |
| @RunWith(AndroidJUnit4::class) |
| class DialogFragmentNavigatorTest { |
| |
| companion object { |
| private const val INITIAL_FRAGMENT = 1 |
| } |
| |
| @Suppress("DEPRECATION") |
| @get:Rule |
| var activityRule = androidx.test.rule.ActivityTestRule(EmptyActivity::class.java) |
| |
| private lateinit var emptyActivity: EmptyActivity |
| private lateinit var fragmentManager: FragmentManager |
| private lateinit var navigatorState: TestNavigatorState |
| private lateinit var dialogNavigator: DialogFragmentNavigator |
| |
| @Before |
| fun setup() { |
| emptyActivity = activityRule.activity |
| fragmentManager = emptyActivity.supportFragmentManager |
| navigatorState = TestNavigatorState() |
| dialogNavigator = DialogFragmentNavigator(emptyActivity, fragmentManager) |
| dialogNavigator.onAttach(navigatorState) |
| } |
| |
| @UiThreadTest |
| @Test |
| fun testNavigate() { |
| lateinit var dialogFragment: DialogFragment |
| fragmentManager.fragmentFactory = object : FragmentFactory() { |
| override fun instantiate(classLoader: ClassLoader, className: String): Fragment { |
| return super.instantiate(classLoader, className).also { fragment -> |
| if (fragment is DialogFragment) { |
| dialogFragment = fragment |
| } |
| } |
| } |
| } |
| val entry = createBackStackEntry() |
| |
| dialogNavigator.navigate(listOf(entry), null, null) |
| assertThat(navigatorState.backStack.value) |
| .containsExactly(entry) |
| fragmentManager.executePendingTransactions() |
| assertWithMessage("Dialog should be shown") |
| .that(dialogFragment.requireDialog().isShowing) |
| .isTrue() |
| } |
| |
| @UiThreadTest |
| @Test |
| fun testFindNavController() { |
| val dialogFragment = EmptyDialogFragment() |
| // Fake using a NavHostFragment and instead just manually show the DialogFragment |
| dialogFragment.showNow(fragmentManager, null) |
| assertWithMessage("Dialog should be shown") |
| .that(dialogFragment.requireDialog().isShowing) |
| .isTrue() |
| |
| // And set a NavController on the root view |
| val navController = NavController(emptyActivity) |
| Navigation.setViewNavController( |
| dialogFragment.requireDialog().window!!.decorView, |
| navController |
| ) |
| |
| val returnedNavController = NavHostFragment.findNavController(dialogFragment) |
| assertThat(returnedNavController) |
| .isEqualTo(navController) |
| } |
| |
| @UiThreadTest |
| @Test |
| fun testPop() { |
| lateinit var dialogFragment: DialogFragment |
| fragmentManager.fragmentFactory = object : FragmentFactory() { |
| override fun instantiate(classLoader: ClassLoader, className: String): Fragment { |
| return super.instantiate(classLoader, className).also { fragment -> |
| if (fragment is DialogFragment) { |
| dialogFragment = fragment |
| } |
| } |
| } |
| } |
| val entry = createBackStackEntry() |
| |
| dialogNavigator.navigate(listOf(entry), null, null) |
| assertThat(navigatorState.backStack.value) |
| .containsExactly(entry) |
| fragmentManager.executePendingTransactions() |
| assertWithMessage("Dialog should be shown") |
| .that(dialogFragment.requireDialog().isShowing) |
| .isTrue() |
| dialogNavigator.popBackStack(entry, false) |
| assertWithMessage("DialogNavigator should pop dialog off the back stack") |
| .that(navigatorState.backStack.value) |
| .isEmpty() |
| assertWithMessage("Pop should dismiss the DialogFragment") |
| .that(dialogFragment.requireDialog().isShowing) |
| .isFalse() |
| } |
| |
| private fun createBackStackEntry( |
| destId: Int = INITIAL_FRAGMENT, |
| clazz: KClass<out Fragment> = EmptyDialogFragment::class |
| ): NavBackStackEntry { |
| val destination = dialogNavigator.createDestination().apply { |
| id = destId |
| setClassName(clazz.java.name) |
| } |
| return navigatorState.createBackStackEntry(destination, null) |
| } |
| } |
| |
| class EmptyDialogFragment : DialogFragment() { |
| override fun onCreateDialog(savedInstanceState: Bundle?): Dialog = |
| AlertDialog.Builder(requireContext()).create() |
| } |