| /* |
| * 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.room.integration.testapp.test; |
| |
| import static androidx.test.InstrumentationRegistry.getInstrumentation; |
| |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.greaterThan; |
| |
| import androidx.arch.core.executor.ArchTaskExecutor; |
| import androidx.arch.core.executor.DefaultTaskExecutor; |
| import androidx.lifecycle.LiveData; |
| import androidx.room.Room; |
| import androidx.room.integration.testapp.TestDatabase; |
| import androidx.room.integration.testapp.dao.PetDao; |
| import androidx.room.integration.testapp.vo.Pet; |
| import androidx.test.InstrumentationRegistry; |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import com.google.common.base.Optional; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.SettableFuture; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.ArrayDeque; |
| import java.util.Queue; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public class QueryExecutorTest { |
| |
| /** |
| * Blocks the calling thread while executing input commands on a background thread. Also records |
| * executed tasks into a queue. |
| */ |
| private static class RecordingExecutor implements Executor { |
| private final Queue<Runnable> mTaskQueue = new ArrayDeque<>(); |
| |
| private ExecutorService mExecutorService = Executors.newFixedThreadPool(3); |
| |
| @Override |
| public void execute(Runnable command) { |
| try { |
| mExecutorService.submit(command).get(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| mTaskQueue.add(command); |
| } |
| } |
| |
| private RecordingExecutor mRecordingExecutor; |
| private TestDatabase mTestDatabase; |
| private PetDao mPetDao; |
| |
| @Before |
| public void setUp() { |
| // Set ArchTaskExecutor to crash. It should never be invoked. |
| ArchTaskExecutor.getInstance().setDelegate(new DefaultTaskExecutor() { |
| @Override |
| public void executeOnDiskIO(Runnable runnable) { |
| throw new IllegalStateException( |
| "ArchTestExecutor was used instead of the set Executor."); |
| } |
| }); |
| |
| mRecordingExecutor = new RecordingExecutor(); |
| mTestDatabase = Room.inMemoryDatabaseBuilder( |
| InstrumentationRegistry.getContext(), |
| TestDatabase.class) |
| .setQueryExecutor(mRecordingExecutor) |
| .build(); |
| mPetDao = mTestDatabase.getPetDao(); |
| } |
| |
| @After |
| public void tearDown() { |
| mTestDatabase.close(); |
| } |
| |
| @Test |
| public void testInitDoesNotUseExecutor() { |
| assertThat( |
| mRecordingExecutor.mTaskQueue.isEmpty(), |
| is(true)); |
| } |
| |
| @Test |
| public void testGuavaListenableFutureUsesExecutorOnQuery() |
| throws ExecutionException, InterruptedException { |
| mPetDao.insertOrReplace(TestUtil.createPet(2)); |
| ListenableFuture<Optional<Pet>> petsNamedFuture = mPetDao.petWithIdFuture(2); |
| |
| assertThat( |
| mRecordingExecutor.mTaskQueue.size(), |
| greaterThan(0)); |
| assertThat( |
| petsNamedFuture.get().isPresent(), |
| is(true)); |
| assertThat( |
| petsNamedFuture.get().get().getPetId(), |
| is(2)); |
| } |
| |
| @Test |
| public void testRxUsesExecutorOnConsume() { |
| mPetDao.insertOrReplace(TestUtil.createPet(2)); |
| Pet pet = mPetDao.petWithIdFlowable(2).blockingFirst(); |
| |
| assertThat( |
| mRecordingExecutor.mTaskQueue.size(), |
| greaterThan(0)); |
| assertThat( |
| pet.getPetId(), |
| is(2)); |
| } |
| |
| @Test |
| public void testLiveDataUsesExecutorOnObserve() |
| throws ExecutionException, InterruptedException { |
| mPetDao.insertOrReplace(TestUtil.createPet(2)); |
| LiveData<Pet> petLiveData = mPetDao.petWithIdLiveData(2); |
| |
| SettableFuture<Pet> observedPet = SettableFuture.create(); |
| getInstrumentation().runOnMainSync(() -> petLiveData.observeForever(pet -> { |
| observedPet.set(pet); |
| })); |
| getInstrumentation().waitForIdleSync(); |
| |
| assertThat( |
| mRecordingExecutor.mTaskQueue.size(), |
| greaterThan(0)); |
| assertThat(petLiveData.getValue().getPetId(), is(2)); |
| assertThat(observedPet.get().getPetId(), is(2)); |
| } |
| } |
