| /* |
| * 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 com.android.car.arch.common; |
| |
| import static com.android.car.arch.common.LiveDataFunctions.loadingSwitchMap; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import androidx.arch.core.executor.testing.InstantTaskExecutorRule; |
| import androidx.lifecycle.LiveData; |
| import androidx.lifecycle.MutableLiveData; |
| |
| import com.android.car.arch.common.testing.CaptureObserver; |
| import com.android.car.arch.common.testing.TestLifecycleOwner; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.robolectric.RobolectricTestRunner; |
| import org.robolectric.annotation.Config; |
| |
| @RunWith(RobolectricTestRunner.class) |
| @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION) |
| public class LoadingSwitchMapTest { |
| |
| @Rule |
| public final InstantTaskExecutorRule mTaskExecutorRule = new InstantTaskExecutorRule(); |
| @Rule |
| public final TestLifecycleOwner mLifecycleOwner = new TestLifecycleOwner(); |
| |
| private MutableLiveData<Object> mTrigger; |
| private MutableLiveData<Integer> mOutput; |
| private CaptureObserver<FutureData<Integer>> mObserver; |
| |
| @Before |
| public void setUp() { |
| mTrigger = new MutableLiveData<>(); |
| mOutput = new MutableLiveData<>(); |
| mObserver = new CaptureObserver<>(); |
| } |
| |
| @Test |
| public void testIsLoading_uninitialized() { |
| LiveData<FutureData<Integer>> underTest = loadingSwitchMap(mTrigger, |
| (data) -> mOutput); |
| underTest.observe(mLifecycleOwner, mObserver); |
| |
| assertThat(mObserver.hasBeenNotified()).isFalse(); |
| } |
| |
| @Test |
| public void testIsLoading_initializedTrigger() { |
| mTrigger.setValue(new Object()); |
| |
| LiveData<FutureData<Integer>> underTest = loadingSwitchMap(mTrigger, |
| (data) -> mOutput); |
| underTest.observe(mLifecycleOwner, mObserver); |
| |
| assertThat(mObserver.hasBeenNotified()).isTrue(); |
| assertThat(mObserver.getObservedValue().isLoading()).isTrue(); |
| assertThat(mObserver.getObservedValue().getData()).isNull(); |
| } |
| |
| @Test |
| public void testIsLoading_alreadyLoaded() { |
| mTrigger.setValue(new Object()); |
| mOutput.setValue(1); |
| |
| LiveData<FutureData<Integer>> underTest = loadingSwitchMap(mTrigger, |
| (data) -> mOutput); |
| underTest.observe(mLifecycleOwner, mObserver); |
| |
| assertThat(mObserver.hasBeenNotified()).isTrue(); |
| assertThat(mObserver.getObservedValue().isLoading()).isFalse(); |
| assertThat(mObserver.getObservedValue().getData()).isEqualTo(1); |
| } |
| |
| @Test |
| public void testIsLoading_normalFlow() { |
| LiveData<FutureData<Integer>> underTest = loadingSwitchMap(mTrigger, |
| (data) -> mOutput); |
| underTest.observe(mLifecycleOwner, mObserver); |
| |
| mTrigger.setValue(new Object()); |
| |
| assertThat(mObserver.hasBeenNotified()).isTrue(); |
| assertThat(mObserver.getObservedValue().isLoading()).isTrue(); |
| |
| mOutput.setValue(1); |
| |
| assertThat(mObserver.getObservedValue().isLoading()).isFalse(); |
| assertThat(mObserver.getObservedValue().getData()).isEqualTo(1); |
| } |
| |
| @Test |
| public void testIsLoading_secondLoad() { |
| mTrigger.setValue(new Object()); |
| mOutput.setValue(1); |
| |
| LiveData<FutureData<Integer>> underTest = loadingSwitchMap(mTrigger, |
| (data) -> mOutput); |
| underTest.observe(mLifecycleOwner, mObserver); |
| |
| mTrigger.setValue(new Object()); |
| |
| assertThat(mObserver.hasBeenNotified()).isTrue(); |
| assertThat(mObserver.getObservedValue().isLoading()).isTrue(); |
| assertThat(mObserver.getObservedValue().getData()).isNull(); |
| |
| mOutput.setValue(2); |
| |
| assertThat(mObserver.getObservedValue().isLoading()).isFalse(); |
| assertThat(mObserver.getObservedValue().getData()).isEqualTo(2); |
| } |
| } |