/*
* Copyright 2002-2016 the original author or 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 org.springframework.util.concurrent;
import java.io.IOException;
import java.util.concurrent.Callable;
import org.junit.Test;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
/**
* @author Arjen Poutsma
* @author Sebastien Deleuze
*/
@SuppressWarnings("unchecked")
public class ListenableFutureTaskTests {
@Test
public void success() throws Exception {
final String s = "Hello World";
Callable<String> callable = new Callable<String>() {
@Override
public String call() throws Exception {
return s;
}
};
ListenableFutureTask<String> task = new ListenableFutureTask<>(callable);
task.addCallback(new ListenableFutureCallback<String>() {
@Override
public void onSuccess(String result) {
assertEquals(s, result);
}
@Override
public void onFailure(Throwable ex) {
fail(ex.getMessage());
}
});
task.run();
}
@Test
public void failure() throws Exception {
final String s = "Hello World";
Callable<String> callable = new Callable<String>() {
@Override
public String call() throws Exception {
throw new IOException(s);
}
};
ListenableFutureTask<String> task = new ListenableFutureTask<>(callable);
task.addCallback(new ListenableFutureCallback<String>() {
@Override
public void onSuccess(String result) {
fail("onSuccess not expected");
}
@Override
public void onFailure(Throwable ex) {
assertEquals(s, ex.getMessage());
}
});
task.run();
}
@Test
public void successWithLambdas() throws Exception {
final String s = "Hello World";
Callable<String> callable = () -> s;
SuccessCallback<String> successCallback = mock(SuccessCallback.class);
FailureCallback failureCallback = mock(FailureCallback.class);
ListenableFutureTask<String> task = new ListenableFutureTask<>(callable);
task.addCallback(successCallback, failureCallback);
task.run();
verify(successCallback).onSuccess(s);
verifyZeroInteractions(failureCallback);
}
@Test
public void failureWithLambdas() throws Exception {
final String s = "Hello World";
IOException ex = new IOException(s);
Callable<String> callable = () -> {
throw ex;
};
SuccessCallback<String> successCallback = mock(SuccessCallback.class);
FailureCallback failureCallback = mock(FailureCallback.class);
ListenableFutureTask<String> task = new ListenableFutureTask<>(callable);
task.addCallback(successCallback, failureCallback);
task.run();
verify(failureCallback).onFailure(ex);
verifyZeroInteractions(successCallback);
}
}