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/*
* Copyright (C) 2006 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 org.junit.Assert.assertThrows;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;
/**
* Unit test for {@link FakeTimeLimiter}.
*
* @author Jens Nyman
*/
public class FakeTimeLimiterTest extends TestCase {
private static final int DELAY_MS = 50;
private static final String RETURN_VALUE = "abc";
private TimeLimiter timeLimiter;
@Override
protected void setUp() throws Exception {
super.setUp();
timeLimiter = new FakeTimeLimiter();
}
public void testCallWithTimeout_propagatesReturnValue() throws Exception {
String result =
timeLimiter.callWithTimeout(
Callables.returning(RETURN_VALUE), DELAY_MS, TimeUnit.MILLISECONDS);
assertThat(result).isEqualTo(RETURN_VALUE);
}
public void testCallWithTimeout_wrapsCheckedException() throws Exception {
Exception exception = new SampleCheckedException();
ExecutionException e =
assertThrows(
ExecutionException.class,
() ->
timeLimiter.callWithTimeout(
callableThrowing(exception), DELAY_MS, TimeUnit.MILLISECONDS));
assertThat(e.getCause()).isEqualTo(exception);
}
public void testCallWithTimeout_wrapsUncheckedException() throws Exception {
Exception exception = new RuntimeException("test");
UncheckedExecutionException e =
assertThrows(
UncheckedExecutionException.class,
() ->
timeLimiter.callWithTimeout(
callableThrowing(exception), DELAY_MS, TimeUnit.MILLISECONDS));
assertThat(e.getCause()).isEqualTo(exception);
}
public void testCallUninterruptiblyWithTimeout_propagatesReturnValue() throws Exception {
String result =
timeLimiter.callUninterruptiblyWithTimeout(
Callables.returning(RETURN_VALUE), DELAY_MS, TimeUnit.MILLISECONDS);
assertThat(result).isEqualTo(RETURN_VALUE);
}
public void testRunWithTimeout_returnsWithoutException() throws Exception {
timeLimiter.runWithTimeout(Runnables.doNothing(), DELAY_MS, TimeUnit.MILLISECONDS);
}
public void testRunWithTimeout_wrapsUncheckedException() throws Exception {
RuntimeException exception = new RuntimeException("test");
UncheckedExecutionException e =
assertThrows(
UncheckedExecutionException.class,
() ->
timeLimiter.runWithTimeout(
runnableThrowing(exception), DELAY_MS, TimeUnit.MILLISECONDS));
assertThat(e.getCause()).isEqualTo(exception);
}
public void testRunUninterruptiblyWithTimeout_wrapsUncheckedException() throws Exception {
RuntimeException exception = new RuntimeException("test");
UncheckedExecutionException e =
assertThrows(
UncheckedExecutionException.class,
() ->
timeLimiter.runUninterruptiblyWithTimeout(
runnableThrowing(exception), DELAY_MS, TimeUnit.MILLISECONDS));
assertThat(e.getCause()).isEqualTo(exception);
}
public static <T> Callable<T> callableThrowing(final Exception exception) {
return new Callable<T>() {
@Override
public T call() throws Exception {
throw exception;
}
};
}
private static Runnable runnableThrowing(final RuntimeException e) {
return new Runnable() {
@Override
public void run() {
throw e;
}
};
}
@SuppressWarnings("serial")
private static class SampleCheckedException extends Exception {}
}
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