| /* |
| * Copyright (C) 2017 The Guava Authors |
| * |
| * 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.google.common.util.concurrent; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.common.truth.Truth.assertWithMessage; |
| import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination; |
| import static com.google.common.util.concurrent.Uninterruptibles.awaitUninterruptibly; |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| |
| import com.google.common.util.concurrent.ClosingFuture.ClosingCallable; |
| import com.google.common.util.concurrent.ClosingFuture.DeferredCloser; |
| import com.google.common.util.concurrent.ClosingFuture.ValueAndCloser; |
| import com.google.common.util.concurrent.ClosingFuture.ValueAndCloserConsumer; |
| import java.io.Closeable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.ExecutorService; |
| |
| /** |
| * Tests for {@link ClosingFuture} that exercise {@link |
| * ClosingFuture#finishToValueAndCloser(ValueAndCloserConsumer, Executor)}. |
| */ |
| public class ClosingFutureFinishToValueAndCloserTest extends AbstractClosingFutureTest { |
| private final ExecutorService finishToValueAndCloserExecutor = newSingleThreadExecutor(); |
| private volatile ValueAndCloser<?> valueAndCloser; |
| |
| @Override |
| protected void tearDown() throws Exception { |
| super.tearDown(); |
| assertWithMessage("finishToValueAndCloserExecutor was shut down") |
| .that(shutdownAndAwaitTermination(finishToValueAndCloserExecutor, 10, SECONDS)) |
| .isTrue(); |
| } |
| |
| public void testFinishToValueAndCloser_throwsIfCalledTwice() throws Exception { |
| ClosingFuture<Closeable> closingFuture = |
| ClosingFuture.submit( |
| new ClosingCallable<Closeable>() { |
| @Override |
| public Closeable call(DeferredCloser closer) throws Exception { |
| return closer.eventuallyClose(mockCloseable, executor); |
| } |
| }, |
| executor); |
| closingFuture.finishToValueAndCloser( |
| new NoOpValueAndCloserConsumer<>(), finishToValueAndCloserExecutor); |
| try { |
| closingFuture.finishToValueAndCloser( |
| new NoOpValueAndCloserConsumer<>(), finishToValueAndCloserExecutor); |
| fail("should have thrown"); |
| } catch (IllegalStateException expected) { |
| } |
| } |
| |
| public void testFinishToValueAndCloser_throwsAfterCallingFinishToFuture() throws Exception { |
| ClosingFuture<Closeable> closingFuture = |
| ClosingFuture.submit( |
| new ClosingCallable<Closeable>() { |
| @Override |
| public Closeable call(DeferredCloser closer) throws Exception { |
| return closer.eventuallyClose(mockCloseable, executor); |
| } |
| }, |
| executor); |
| FluentFuture<Closeable> unused = closingFuture.finishToFuture(); |
| try { |
| closingFuture.finishToValueAndCloser( |
| new NoOpValueAndCloserConsumer<>(), finishToValueAndCloserExecutor); |
| fail("should have thrown"); |
| } catch (IllegalStateException expected) { |
| } |
| } |
| |
| @Override |
| <T> T getFinalValue(ClosingFuture<T> closingFuture) throws ExecutionException { |
| return finishToValueAndCloser(closingFuture).get(); |
| } |
| |
| @Override |
| void assertFinallyFailsWithException(ClosingFuture<?> closingFuture) { |
| assertThatFutureFailsWithException(closingFuture.statusFuture()); |
| ValueAndCloser<?> valueAndCloser = finishToValueAndCloser(closingFuture); |
| try { |
| valueAndCloser.get(); |
| fail(); |
| } catch (ExecutionException expected) { |
| assertThat(expected).hasCauseThat().isSameInstanceAs(exception); |
| } |
| valueAndCloser.closeAsync(); |
| } |
| |
| @Override |
| void assertBecomesCanceled(ClosingFuture<?> closingFuture) throws ExecutionException { |
| assertThatFutureBecomesCancelled(closingFuture.statusFuture()); |
| } |
| |
| @Override |
| void waitUntilClosed(ClosingFuture<?> closingFuture) { |
| if (valueAndCloser != null) { |
| valueAndCloser.closeAsync(); |
| } |
| super.waitUntilClosed(closingFuture); |
| } |
| |
| @Override |
| void cancelFinalStepAndWait(ClosingFuture<TestCloseable> closingFuture) { |
| assertThat(closingFuture.cancel(false)).isTrue(); |
| ValueAndCloser<?> unused = finishToValueAndCloser(closingFuture); |
| waitUntilClosed(closingFuture); |
| futureCancelled.countDown(); |
| } |
| |
| private <V> ValueAndCloser<V> finishToValueAndCloser(ClosingFuture<V> closingFuture) { |
| final CountDownLatch valueAndCloserSet = new CountDownLatch(1); |
| closingFuture.finishToValueAndCloser( |
| new ValueAndCloserConsumer<V>() { |
| @Override |
| public void accept(ValueAndCloser<V> valueAndCloser) { |
| ClosingFutureFinishToValueAndCloserTest.this.valueAndCloser = valueAndCloser; |
| valueAndCloserSet.countDown(); |
| } |
| }, |
| finishToValueAndCloserExecutor); |
| assertWithMessage("valueAndCloser was set") |
| .that(awaitUninterruptibly(valueAndCloserSet, 10, SECONDS)) |
| .isTrue(); |
| @SuppressWarnings("unchecked") |
| ValueAndCloser<V> valueAndCloserWithType = (ValueAndCloser<V>) valueAndCloser; |
| return valueAndCloserWithType; |
| } |
| } |