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/*
* 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.cache;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import java.util.concurrent.ExecutionException;
import junit.framework.TestCase;
/**
* Unit test for {@link ForwardingCache}.
*
* @author Charles Fry
*/
public class ForwardingCacheTest extends TestCase {
private Cache<String, Boolean> forward;
private Cache<String, Boolean> mock;
@SuppressWarnings("unchecked") // mock
@Override
public void setUp() throws Exception {
super.setUp();
/*
* Class parameters must be raw, so we can't create a proxy with generic
* type arguments. The created proxy only records calls and returns null, so
* the type is irrelevant at runtime.
*/
mock = mock(Cache.class);
forward =
new ForwardingCache<String, Boolean>() {
@Override
protected Cache<String, Boolean> delegate() {
return mock;
}
};
}
public void testGetIfPresent() throws ExecutionException {
when(mock.getIfPresent("key")).thenReturn(Boolean.TRUE);
assertSame(Boolean.TRUE, forward.getIfPresent("key"));
}
public void testGetAllPresent() throws ExecutionException {
when(mock.getAllPresent(ImmutableList.of("key")))
.thenReturn(ImmutableMap.of("key", Boolean.TRUE));
assertEquals(
ImmutableMap.of("key", Boolean.TRUE), forward.getAllPresent(ImmutableList.of("key")));
}
public void testInvalidate() {
forward.invalidate("key");
verify(mock).invalidate("key");
}
public void testInvalidateAllIterable() {
forward.invalidateAll(ImmutableList.of("key"));
verify(mock).invalidateAll(ImmutableList.of("key"));
}
public void testInvalidateAll() {
forward.invalidateAll();
verify(mock).invalidateAll();
}
public void testSize() {
when(mock.size()).thenReturn(0L);
assertEquals(0, forward.size());
}
public void testStats() {
when(mock.stats()).thenReturn(null);
assertNull(forward.stats());
}
public void testAsMap() {
when(mock.asMap()).thenReturn(null);
assertNull(forward.asMap());
}
public void testCleanUp() {
forward.cleanUp();
verify(mock).cleanUp();
}
/** Make sure that all methods are forwarded. */
private static class OnlyGet<K, V> extends ForwardingCache<K, V> {
@Override
protected Cache<K, V> delegate() {
return null;
}
}
}
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