| /* |
| * Copyright (C) 2022 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 com.android.settings.network.helper; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import androidx.lifecycle.Lifecycle; |
| import androidx.lifecycle.LifecycleOwner; |
| import androidx.lifecycle.LifecycleRegistry; |
| import androidx.test.ext.junit.runners.AndroidJUnit4; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.concurrent.Phaser; |
| import java.util.concurrent.atomic.AtomicReference; |
| import java.util.function.Consumer; |
| |
| @RunWith(AndroidJUnit4.class) |
| public class LifecycleCallbackConverterTest implements LifecycleOwner { |
| |
| private final LifecycleRegistry mRegistry = LifecycleRegistry.createUnsafe(this); |
| |
| private Object mTestData; |
| private TestConsumer mConsumer; |
| private LifecycleCallbackConverter<Object> mConverter; |
| |
| @Before |
| public void setUp() { |
| mTestData = new Object(); |
| mConsumer = new TestConsumer(); |
| mConverter = new LifecycleCallbackConverter<Object>(getLifecycle(), mConsumer); |
| } |
| |
| public Lifecycle getLifecycle() { |
| return mRegistry; |
| } |
| |
| @Test |
| public void converter_dropResult_whenInActive() { |
| mConverter.postResult(mTestData); |
| |
| assertThat(mConsumer.getCallbackCount()).isEqualTo(0); |
| } |
| |
| @Test |
| public void converter_callbackResult_whenActive() { |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_CREATE); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| |
| mConverter.postResult(mTestData); |
| assertThat(mConsumer.getCallbackCount()).isEqualTo(1); |
| assertThat(mConsumer.getData()).isEqualTo(mTestData); |
| } |
| |
| @Test |
| public void converter_dropResult_whenBackToInActive() { |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_CREATE); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_STOP); |
| |
| mConverter.postResult(mTestData); |
| assertThat(mConsumer.getCallbackCount()).isEqualTo(0); |
| } |
| |
| @Test |
| public void converter_passResultToUiThread_whenActive() { |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_CREATE); |
| mRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); |
| |
| final Phaser phaser = new Phaser(1); |
| Thread executionThread = new Thread(() -> { |
| mConverter.postResult(phaser); |
| }); |
| executionThread.start(); |
| phaser.awaitAdvance(0); |
| |
| assertThat(mConsumer.getData()).isEqualTo(phaser); |
| assertThat(mConsumer.getCallbackCount()).isEqualTo(1); |
| } |
| |
| public static class TestConsumer implements Consumer<Object> { |
| long mNumberOfCallback; |
| AtomicReference<Object> mLatestData; |
| |
| public TestConsumer() { |
| mLatestData = new AtomicReference<Object>(); |
| } |
| |
| public void accept(Object data) { |
| mLatestData.set(data); |
| mNumberOfCallback ++; |
| if ((data != null) && (data instanceof Phaser)) { |
| ((Phaser)data).arrive(); |
| } |
| } |
| |
| protected long getCallbackCount() { |
| return mNumberOfCallback; |
| } |
| |
| protected Object getData() { |
| return mLatestData.get(); |
| } |
| } |
| } |