| /* |
| * 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.fragment.app |
| |
| import android.content.Context |
| import androidx.fragment.app.test.FragmentTestActivity |
| import androidx.fragment.app.test.FragmentTestActivity.ParentFragment |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.MediumTest |
| import androidx.test.rule.ActivityTestRule |
| import com.google.common.truth.Truth.assertWithMessage |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import java.util.concurrent.CountDownLatch |
| import java.util.concurrent.TimeUnit |
| |
| @RunWith(AndroidJUnit4::class) |
| class NestedFragmentRestoreTest { |
| |
| @get:Rule |
| val activityRule = ActivityTestRule(FragmentTestActivity::class.java) |
| |
| @Test |
| @MediumTest |
| fun recreateActivity() { |
| val activity = activityRule.activity |
| activityRule.runOnUiThread { |
| val parent = ParentFragment() |
| parent.setRetainChildInstance(true) |
| |
| activity.supportFragmentManager.beginTransaction() |
| .add(parent, "parent") |
| .commitNow() |
| } |
| |
| val fm = activity.supportFragmentManager |
| val parent = fm.findFragmentByTag("parent") as ParentFragment |
| val child = parent.childFragment |
| |
| var attachedTo: Context? = null |
| val latch = CountDownLatch(1) |
| child.setOnAttachListener { context, _ -> |
| attachedTo = context |
| latch.countDown() |
| } |
| |
| activityRule.runOnUiThread { activity.recreate() } |
| |
| assertWithMessage("timeout waiting for recreate") |
| .that(latch.await(10, TimeUnit.SECONDS)) |
| .isTrue() |
| |
| assertWithMessage("attached as part of recreate").that(attachedTo).isNotNull() |
| assertWithMessage("attached to new context") |
| .that(attachedTo) |
| .isNotSameAs(activity) |
| assertWithMessage("attached to new parent fragment") |
| .that(child) |
| .isNotSameAs(parent) |
| } |
| } |
