| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.cassandra.utils.concurrent; |
| |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import java.util.function.Predicate; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.distributed.shared.ThrowingRunnable; |
| |
| public class ImmediateFutureTest |
| { |
| |
| private void testSimple(ImmediateFuture<Boolean> p, boolean isCancelled) throws InterruptedException |
| { |
| Assert.assertEquals(p, p.await()); |
| Assert.assertEquals(p, p.awaitUninterruptibly()); |
| Assert.assertEquals(p, p.awaitThrowUncheckedOnInterrupt()); |
| Assert.assertTrue(p.await(1L, TimeUnit.MILLISECONDS)); |
| Assert.assertTrue(p.await(1L)); |
| Assert.assertTrue(p.awaitUntil(Long.MAX_VALUE)); |
| Assert.assertTrue(p.awaitUntilUninterruptibly(Long.MAX_VALUE)); |
| Assert.assertTrue(p.awaitUntilThrowUncheckedOnInterrupt(Long.MAX_VALUE)); |
| Assert.assertTrue(p.isDone()); |
| Assert.assertFalse(p.isCancellable()); |
| Assert.assertEquals(isCancelled, p.isCancelled()); |
| Assert.assertEquals(!isCancelled, p.setUncancellable()); |
| Assert.assertFalse(p.setUncancellableExclusive()); |
| Assert.assertFalse(p.cancel(true)); |
| Assert.assertFalse(p.cancel(false)); |
| Assert.assertFalse(p.trySuccess(false)); |
| Assert.assertFalse(p.tryFailure(new InterruptedException())); |
| } |
| |
| @Test |
| public void testSucceeded() throws InterruptedException, ExecutionException, TimeoutException |
| { |
| ImmediateFuture<Boolean> p = ImmediateFuture.success(true); |
| Assert.assertTrue(p.getNow()); |
| Assert.assertTrue(p.get()); |
| Assert.assertTrue(p.get(1L, TimeUnit.MILLISECONDS)); |
| Assert.assertEquals(p, p.sync()); |
| Assert.assertEquals(p, p.syncUninterruptibly()); |
| Assert.assertFalse(p.isCancelled()); |
| testSimple(p, false); |
| } |
| |
| @Test |
| public void testFailed() throws InterruptedException |
| { |
| testFailed(ImmediateFuture.failure(new RuntimeException()), false, t -> t instanceof ExecutionException, t -> t instanceof RuntimeException); |
| } |
| |
| @Test |
| public void testCancelled() throws InterruptedException |
| { |
| testFailed(ImmediateFuture.cancelled(), true, t -> t instanceof CancellationException, t -> t instanceof CancellationException); |
| } |
| |
| private void testFailed(ImmediateFuture<Boolean> p, boolean isCancelled, Predicate<Throwable> get, Predicate<Throwable> sync) throws InterruptedException |
| { |
| Assert.assertNull(p.getNow()); |
| assertFailure(p::get, get); |
| assertFailure(() -> p.get(1L, TimeUnit.MILLISECONDS), get); |
| assertFailure(p::sync, sync); |
| assertFailure(p::syncUninterruptibly, sync); |
| testSimple(p, isCancelled); |
| } |
| |
| private static void assertFailure(ThrowingRunnable run, Predicate<Throwable> test) |
| { |
| Throwable failure = null; |
| try |
| { |
| run.run(); |
| } |
| catch (Throwable t) |
| { |
| failure = t; |
| } |
| if (failure == null || !test.test(failure)) |
| Assert.fail(); |
| } |
| |
| } |