1 /* 2 * Copyright (C) 2015 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.util.concurrent; 18 19 import static com.google.common.base.Preconditions.checkNotNull; 20 import static com.google.common.base.Preconditions.checkState; 21 import static com.google.common.util.concurrent.FuturesTest.failureWithCause; 22 import static com.google.common.util.concurrent.FuturesTest.pseudoTimedGetUninterruptibly; 23 import static com.google.common.util.concurrent.Uninterruptibles.getUninterruptibly; 24 import static java.util.concurrent.TimeUnit.MILLISECONDS; 25 import static java.util.concurrent.TimeUnit.SECONDS; 26 import static junit.framework.Assert.assertFalse; 27 import static junit.framework.Assert.fail; 28 29 import com.google.common.annotations.GwtCompatible; 30 import java.util.concurrent.ExecutionException; 31 import java.util.concurrent.Future; 32 import java.util.concurrent.TimeoutException; 33 import junit.framework.AssertionFailedError; 34 35 /** Methods factored out so that they can be emulated differently in GWT. */ 36 @GwtCompatible(emulated = true) 37 final class TestPlatform { verifyGetOnPendingFuture(Future<?> future)38 static void verifyGetOnPendingFuture(Future<?> future) { 39 checkNotNull(future); 40 try { 41 pseudoTimedGetUninterruptibly(future, 10, MILLISECONDS); 42 fail(); 43 } catch (TimeoutException expected) { 44 } catch (ExecutionException e) { 45 throw failureWithCause(e, ""); 46 } 47 } 48 verifyTimedGetOnPendingFuture(Future<?> future)49 static void verifyTimedGetOnPendingFuture(Future<?> future) { 50 try { 51 getUninterruptibly(future, 0, SECONDS); 52 fail(); 53 } catch (TimeoutException expected) { 54 } catch (ExecutionException e) { 55 throw failureWithCause(e, ""); 56 } 57 } 58 verifyThreadWasNotInterrupted()59 static void verifyThreadWasNotInterrupted() { 60 assertFalse(Thread.currentThread().isInterrupted()); 61 } 62 clearInterrupt()63 static void clearInterrupt() { 64 Thread.interrupted(); 65 } 66 67 /** 68 * Retrieves the result of a {@code Future} known to be done but uses the {@code get(long, 69 * TimeUnit)} overload in order to test that method. 70 */ getDoneFromTimeoutOverload(Future<V> future)71 static <V> V getDoneFromTimeoutOverload(Future<V> future) throws ExecutionException { 72 checkState(future.isDone(), "Future was expected to be done: %s", future); 73 try { 74 return getUninterruptibly(future, 0, SECONDS); 75 } catch (TimeoutException e) { 76 AssertionFailedError error = new AssertionFailedError(e.getMessage()); 77 error.initCause(e); 78 throw error; 79 } 80 } 81 TestPlatform()82 private TestPlatform() {} 83 } 84