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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.cayenne.event;
import org.apache.cayenne.util.Util;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;
public class EventSubjectTest {
@Test
public void testIllegalArguments() {
try {
EventSubject.getSubject(null, "Subject");
fail();
} catch (IllegalArgumentException ex) {
// OK
}
try {
EventSubject.getSubject(Object.class, null);
fail();
} catch (IllegalArgumentException ex) {
// OK
}
try {
EventSubject.getSubject(Object.class, "");
fail();
} catch (IllegalArgumentException ex) {
// OK
}
}
@Test
public void testEqualityOfClonedSubjects() throws Exception {
EventSubject s1 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
EventSubject s2 = (EventSubject) Util.cloneViaSerialization(s1);
assertNotSame(s1, s2);
assertEquals(s1, s2);
assertEquals(s1.hashCode(), s2.hashCode());
}
@Test
public void testIdenticalSubject() {
EventSubject s1 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
EventSubject s2 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
assertSame(s1, s2);
}
@Test
public void testEqualityOfIdenticalSubjects() {
EventSubject s1 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
EventSubject s2 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
assertEquals(s1, s2);
}
@Test
public void testEqualityOfSubjectsByDifferentOwner() {
EventSubject s1 = EventSubject.getSubject(EventSubject.class, "MySubject");
EventSubject s2 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
assertFalse(s1.equals(s2));
}
@Test
public void testEqualityOfSubjectsByDifferentTopic() {
EventSubject s1 = EventSubject.getSubject(EventSubjectTest.class, "Subject1");
EventSubject s2 = EventSubject.getSubject(EventSubjectTest.class, "Subject2");
assertFalse(s1.equals(s2));
}
@Test
public void testSubjectEqualsNull() {
EventSubject s1 = EventSubject.getSubject(EventSubjectTest.class, "MySubject");
assertFalse(s1.equals(null));
}
// TODO: (Andrus) This test can not be run reliably and in fact consistently
// fails in some environments, since forcing GC at a certain time is not
// guaranteed.
/*
* public void testSubjectGC() { EventSubject s =
* EventSubject.getSubject(EventSubjectTst.class, "GCSubject"); long hash1 =
* s.hashCode(); // try to make the subject go away s = null; System.gc();
* System.gc(); s = EventSubject.getSubject(EventSubjectTst.class,
* "GCSubject"); long hash2 = s.hashCode(); Assert.assertTrue(hash1 !=
* hash2); }
*/
}