| /* |
| * Copyright (C) 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 com.android.internal.infra; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.testng.Assert.expectThrows; |
| |
| import android.os.Parcel; |
| |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| |
| /** |
| * Unit test for {@link AndroidFuture}. |
| * |
| * <p>To run it: |
| * {@code atest FrameworksCoreTests:com.android.internal.infra.AndroidFutureTest} |
| */ |
| |
| @RunWith(AndroidJUnit4.class) |
| public class AndroidFutureTest { |
| @Test |
| public void testGet() throws Exception { |
| AndroidFuture<Integer> future = new AndroidFuture<>(); |
| future.complete(5); |
| assertThat(future.get()).isEqualTo(5); |
| } |
| |
| @Test |
| public void testWhenComplete_AlreadyComplete() throws Exception { |
| AndroidFuture<Integer> future = new AndroidFuture<>(); |
| future.complete(5); |
| CountDownLatch latch = new CountDownLatch(1); |
| future.whenComplete((obj, err) -> { |
| assertThat(obj).isEqualTo(5); |
| assertThat(err).isNull(); |
| latch.countDown(); |
| }); |
| latch.await(); |
| } |
| |
| @Test |
| public void testWhenComplete_NotYetComplete() throws Exception { |
| AndroidFuture<Integer> future = new AndroidFuture<>(); |
| CountDownLatch latch = new CountDownLatch(1); |
| future.whenComplete((obj, err) -> { |
| assertThat(obj).isEqualTo(5); |
| assertThat(err).isNull(); |
| latch.countDown(); |
| }); |
| assertThat(latch.getCount()).isEqualTo(1); |
| future.complete(5); |
| latch.await(); |
| assertThat(latch.getCount()).isEqualTo(0); |
| } |
| |
| @Test |
| public void testCompleteExceptionally() { |
| AndroidFuture<Integer> future = new AndroidFuture<>(); |
| Exception origException = new UnsupportedOperationException(); |
| future.completeExceptionally(origException); |
| ExecutionException executionException = |
| expectThrows(ExecutionException.class, future::get); |
| assertThat(executionException.getCause()).isSameAs(origException); |
| } |
| |
| @Test |
| public void testCompleteExceptionally_Listener() throws Exception { |
| AndroidFuture<Integer> future = new AndroidFuture<>(); |
| Exception origException = new UnsupportedOperationException(); |
| future.completeExceptionally(origException); |
| CountDownLatch latch = new CountDownLatch(1); |
| future.whenComplete((obj, err) -> { |
| assertThat(obj).isNull(); |
| assertThat(err).isSameAs(origException); |
| latch.countDown(); |
| }); |
| latch.await(); |
| } |
| |
| @Test |
| public void testWriteToParcel() throws Exception { |
| Parcel parcel = Parcel.obtain(); |
| AndroidFuture<Integer> future1 = new AndroidFuture<>(); |
| future1.complete(5); |
| future1.writeToParcel(parcel, 0); |
| |
| parcel.setDataPosition(0); |
| AndroidFuture future2 = AndroidFuture.CREATOR.createFromParcel(parcel); |
| assertThat(future2.get()).isEqualTo(5); |
| } |
| |
| @Test |
| public void testWriteToParcel_Exceptionally() throws Exception { |
| Parcel parcel = Parcel.obtain(); |
| AndroidFuture<Integer> future1 = new AndroidFuture<>(); |
| future1.completeExceptionally(new UnsupportedOperationException()); |
| future1.writeToParcel(parcel, 0); |
| |
| parcel.setDataPosition(0); |
| AndroidFuture future2 = AndroidFuture.CREATOR.createFromParcel(parcel); |
| ExecutionException executionException = |
| expectThrows(ExecutionException.class, future2::get); |
| assertThat(executionException.getCause()).isInstanceOf(UnsupportedOperationException.class); |
| } |
| } |