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/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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.vaadin.tests.event;
import java.lang.reflect.Method;
import org.easymock.EasyMock;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.event.EventRouter;
import com.vaadin.server.ErrorEvent;
import com.vaadin.server.ErrorHandler;
import com.vaadin.ui.Component;
import com.vaadin.ui.Component.Listener;
import com.vaadin.util.ReflectTools;
/**
* Test EventRouter and related error handling.
*/
public class EventRouterTest {
private static final Method COMPONENT_EVENT_METHOD = ReflectTools
.findMethod(Component.Listener.class, "componentEvent",
Component.Event.class);
private EventRouter router;
private Component component;
private ErrorHandler errorHandler;
private Listener listener;
@Before
public void createMocks() {
router = new EventRouter();
component = EasyMock.createNiceMock(Component.class);
errorHandler = EasyMock.createMock(ErrorHandler.class);
listener = EasyMock.createMock(Component.Listener.class);
router.addListener(Component.Event.class, listener,
COMPONENT_EVENT_METHOD);
}
@Test
public void fireEvent_noException_eventReceived() {
listener.componentEvent(EasyMock.<Component.Event> anyObject());
EasyMock.replay(component, listener, errorHandler);
router.fireEvent(new Component.Event(component), errorHandler);
EasyMock.verify(listener, errorHandler);
}
@Test
public void fireEvent_exceptionFromListenerAndNoHandler_exceptionPropagated() {
listener.componentEvent(EasyMock.<Component.Event> anyObject());
EasyMock.expectLastCall().andThrow(
new RuntimeException("listener failed"));
EasyMock.replay(component, listener);
try {
router.fireEvent(new Component.Event(component));
Assert.fail("Did not receive expected exception from listener");
} catch (RuntimeException e) {
// e is a ListenerMethod@MethodException
Assert.assertEquals("listener failed", e.getCause().getMessage());
}
EasyMock.verify(listener);
}
@Test
public void fireEvent_exceptionFromListener_errorHandlerCalled() {
listener.componentEvent(EasyMock.<Component.Event> anyObject());
EasyMock.expectLastCall().andThrow(
new RuntimeException("listener failed"));
errorHandler.error(EasyMock.<ErrorEvent> anyObject());
EasyMock.replay(component, listener, errorHandler);
router.fireEvent(new Component.Event(component), errorHandler);
EasyMock.verify(listener, errorHandler);
}
@Test
public void fireEvent_multipleListenersAndException_errorHandlerCalled() {
Listener listener2 = EasyMock.createMock(Component.Listener.class);
router.addListener(Component.Event.class, listener2,
COMPONENT_EVENT_METHOD);
listener.componentEvent(EasyMock.<Component.Event> anyObject());
EasyMock.expectLastCall().andThrow(
new RuntimeException("listener failed"));
errorHandler.error(EasyMock.<ErrorEvent> anyObject());
// second listener should be called despite an error in the first
listener2.componentEvent(EasyMock.<Component.Event> anyObject());
EasyMock.replay(component, listener, listener2, errorHandler);
router.fireEvent(new Component.Event(component), errorHandler);
EasyMock.verify(listener, listener2, errorHandler);
}
}
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