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* 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
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package org.apache.cayenne.event;
import java.util.Collection;
import junit.framework.TestCase;
import org.apache.cayenne.access.event.SnapshotEvent;
import org.apache.cayenne.test.parallel.ParallelTestContainer;
/**
*/
public class EventBridgeTest extends TestCase {
public void testConstructor() throws Exception {
EventSubject local = EventSubject
.getSubject(EventBridgeTest.class, "testInstall");
String external = "externalSubject";
TestBridge bridge = new TestBridge(local, external);
Collection subjects = bridge.getLocalSubjects();
assertEquals(1, subjects.size());
assertTrue(subjects.contains(local));
assertEquals(external, bridge.getExternalSubject());
}
public void testStartup() throws Exception {
EventSubject local = EventSubject
.getSubject(EventBridgeTest.class, "testInstall");
String external = "externalSubject";
TestBridge bridge = new TestBridge(local, external);
EventManager manager = new DefaultEventManager();
bridge.startup(manager, EventBridge.RECEIVE_LOCAL_EXTERNAL);
assertSame(manager, bridge.eventManager);
assertEquals(1, bridge.startupCalls);
assertEquals(0, bridge.shutdownCalls);
// try startup again
EventManager newManager = new DefaultEventManager();
bridge.startup(newManager, EventBridge.RECEIVE_LOCAL_EXTERNAL);
assertSame(newManager, bridge.eventManager);
assertEquals(2, bridge.startupCalls);
assertEquals(1, bridge.shutdownCalls);
}
public void testShutdown() throws Exception {
EventSubject local = EventSubject
.getSubject(EventBridgeTest.class, "testInstall");
String external = "externalSubject";
TestBridge bridge = new TestBridge(local, external);
EventManager manager = new DefaultEventManager();
bridge.startup(manager, EventBridge.RECEIVE_LOCAL_EXTERNAL);
bridge.shutdown();
assertNull(bridge.eventManager);
assertEquals(1, bridge.startupCalls);
assertEquals(1, bridge.shutdownCalls);
}
public void testSendExternalEvent() throws Exception {
final EventSubject local = EventSubject.getSubject(
EventBridgeTest.class,
"testInstall");
String external = "externalSubject";
final TestBridge bridge = new TestBridge(local, external);
EventManager manager = new DefaultEventManager(2);
bridge.startup(manager, EventBridge.RECEIVE_LOCAL_EXTERNAL);
final SnapshotEvent eventWithNoSubject = new SnapshotEvent(
this,
this,
null,
null,
null,
null);
manager.postEvent(eventWithNoSubject, local);
// check that event was received and that subject was injected...
// since bridge is notified asynchronously by default,
// we must wait till notification is received
ParallelTestContainer helper = new ParallelTestContainer() {
@Override
protected void assertResult() throws Exception {
assertTrue(bridge.lastLocalEvent instanceof SnapshotEvent);
assertEquals(local, bridge.lastLocalEvent.getSubject());
}
};
helper.runTest(5000);
final SnapshotEvent eventWithSubject = new SnapshotEvent(
this,
this,
null,
null,
null,
null);
eventWithSubject.setSubject(local);
manager.postEvent(eventWithNoSubject, local);
// check that event was received and that subject was injected...
// since bridge is notified asynchronously by default,
// we must wait till notification is received
ParallelTestContainer helper1 = new ParallelTestContainer() {
@Override
protected void assertResult() throws Exception {
assertTrue(bridge.lastLocalEvent instanceof SnapshotEvent);
assertEquals(local, bridge.lastLocalEvent.getSubject());
}
};
helper1.runTest(5000);
}
class TestBridge extends EventBridge {
CayenneEvent lastLocalEvent;
int startupCalls;
int shutdownCalls;
public TestBridge(EventSubject localSubject, String externalSubject) {
super(localSubject, externalSubject);
}
@Override
public void sendExternalEvent(CayenneEvent event) {
lastLocalEvent = event;
}
@Override
protected void shutdownExternal() throws Exception {
shutdownCalls++;
}
@Override
protected void startupExternal() throws Exception {
startupCalls++;
}
}
}