/*
* Copyright (C) 2009 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 junit.framework.TestCase;
import java.util.concurrent.Callable;
/**
* Unit tests for {@link Callables}.
*
* @author Isaac Shum
*/
public class CallablesTest extends TestCase {
public void testReturning() throws Exception {
assertNull(Callables.returning(null).call());
Object value = new Object();
Callable<Object> callable = Callables.returning(value);
assertSame(value, callable.call());
// Expect the same value on subsequent calls
assertSame(value, callable.call());
}
}