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AbstractCloseableHandleTest.java
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AbstractCloseableHandleTest.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.runtime.state;
import org.junit.Test;
import java.io.Closeable;
import java.io.IOException;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
public class AbstractCloseableHandleTest {
@Test
public void testRegisterThenClose() throws Exception {
Closeable closeable = mock(Closeable.class);
AbstractCloseableHandle handle = new CloseableHandle();
assertFalse(handle.isClosed());
// no immediate closing
handle.registerCloseable(closeable);
verify(closeable, times(0)).close();
assertFalse(handle.isClosed());
// close forwarded once
handle.close();
verify(closeable, times(1)).close();
assertTrue(handle.isClosed());
// no repeated closing
handle.close();
verify(closeable, times(1)).close();
assertTrue(handle.isClosed());
}
@Test
public void testCloseThenRegister() throws Exception {
Closeable closeable = mock(Closeable.class);
AbstractCloseableHandle handle = new CloseableHandle();
assertFalse(handle.isClosed());
// close the handle before setting the closeable
handle.close();
assertTrue(handle.isClosed());
// immediate closing
try {
handle.registerCloseable(closeable);
fail("this should throw an excepion");
} catch (IOException e) {
// expected
assertTrue(e.getMessage().contains("closed"));
}
// should still have called "close" on the Closeable
verify(closeable, times(1)).close();
assertTrue(handle.isClosed());
// no repeated closing
handle.close();
verify(closeable, times(1)).close();
assertTrue(handle.isClosed());
}
// ------------------------------------------------------------------------
private static final class CloseableHandle extends AbstractCloseableHandle {
private static final long serialVersionUID = 1L;
@Override
public void discardState() {}
@Override
public long getStateSize() {
return 0;
}
}
}