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* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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package javax.faces.event;
import java.lang.reflect.Field;
import java.util.Arrays;
import javax.el.MethodExpression;
import javax.el.MethodNotFoundException;
import javax.faces.component.UICommand;
import org.apache.myfaces.test.base.AbstractJsfTestCase;
import org.easymock.classextension.EasyMock;
/**
* Tests for {@link MethodExpressionValueChangeListener}
*
* @author Jakob Korherr (latest modification by $Author: jakobk $)
* @version $Revision: 909002 $ $Date: 2010-02-11 09:43:15 -0500 (Thu, 11 Feb 2010) $
*/
public class MethodExpressionValueChangeListenerTest extends AbstractJsfTestCase
{
private MethodExpression methodExpressionOneArg;
private MethodExpression methodExpressionZeroArg;
private MethodExpressionValueChangeListener methodExpressionValueChangeListener;
private UICommand uiComponent;
private ValueChangeEvent valueChangeEvent;
private Object[] paramsWithValueChangeEvent;
public MethodExpressionValueChangeListenerTest(String name)
{
super(name);
}
protected void setUp() throws Exception
{
super.setUp();
uiComponent = new UICommand();
valueChangeEvent = new ValueChangeEvent(uiComponent, "1", "2");
paramsWithValueChangeEvent = new Object[] {valueChangeEvent};
methodExpressionOneArg = EasyMock.createNiceMock(MethodExpression.class);
methodExpressionOneArg.getExpressionString();
EasyMock.expectLastCall().andReturn("#{aValueChangeListener.processValueChange}").anyTimes();
methodExpressionZeroArg = EasyMock.createNiceMock(MethodExpression.class);
}
protected void tearDown() throws Exception
{
uiComponent = null;
valueChangeEvent = null;
paramsWithValueChangeEvent = null;
methodExpressionOneArg = null;
methodExpressionZeroArg = null;
super.tearDown();
}
public void testMethodExpressionValueChangeListener()
{
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener();
}
public void testMethodExpressionValueChangeListenerMethodExpression()
{
EasyMock.replay(methodExpressionOneArg);
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener(methodExpressionOneArg);
}
public void testMethodExpressionValueChangeListenerMethodExpressionMethodExpression()
{
EasyMock.replay(methodExpressionOneArg);
EasyMock.replay(methodExpressionZeroArg);
methodExpressionValueChangeListener
= new MethodExpressionValueChangeListener(methodExpressionOneArg, methodExpressionZeroArg);
}
/**
* Test for case: method with ValueChangeEvent param exists (pre-JSF 2.0 case)
*/
public void testProcessValueChange()
{
// First, try to invoke the MethodExpression passed to the constructor of this instance,
// passing the argument ValueChangeEvent as the argument:
methodExpressionOneArg.invoke(EasyMock.eq(facesContext.getELContext()), EasyMock.aryEq(paramsWithValueChangeEvent));
EasyMock.expectLastCall().andReturn(null).times(1);
EasyMock.replay(methodExpressionOneArg);
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener(methodExpressionOneArg);
methodExpressionValueChangeListener.processValueChange(valueChangeEvent);
EasyMock.verify(methodExpressionOneArg);
}
/**
* Test for case: method exists but has no ValueChangeEvent param (new possibility in JSF 2.0)
*/
public void testProcessValueChange2() throws Exception
{
// First, try to invoke the MethodExpression passed to the constructor of this instance,
// passing the argument ValueChangeEvent as the argument
methodExpressionOneArg.invoke(EasyMock.eq(facesContext.getELContext()), EasyMock.aryEq(paramsWithValueChangeEvent));
EasyMock.expectLastCall().andThrow(new MethodNotFoundException()).times(1);
// If a MethodNotFoundException is thrown,
// call to the zero argument MethodExpression derived from the MethodExpression passed
// to the constructor of this instance
methodExpressionZeroArg.invoke(EasyMock.eq(facesContext.getELContext()), EasyMock.aryEq(new Object[0]));
EasyMock.expectLastCall().andReturn(null).times(1);
EasyMock.replay(methodExpressionOneArg);
EasyMock.replay(methodExpressionZeroArg);
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener(methodExpressionOneArg, methodExpressionZeroArg);
methodExpressionValueChangeListener.processValueChange(valueChangeEvent);
EasyMock.verify(methodExpressionOneArg);
EasyMock.verify(methodExpressionZeroArg);
}
public void testSaveState()
{
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener(methodExpressionOneArg, methodExpressionZeroArg);
Object[] expectedState = new Object [] {methodExpressionOneArg, methodExpressionZeroArg};
assertTrue("Both MethodExpression instances described in the constructor must be saved.",
Arrays.deepEquals(expectedState, (Object[]) methodExpressionValueChangeListener.saveState(facesContext)));
}
public void testRestoreState() throws IllegalAccessException, NoSuchFieldException
{
// State saving always call JavaBean constructor:
methodExpressionValueChangeListener = new MethodExpressionValueChangeListener();
// Both MethodExpression instances described in the constructor must be restored.
methodExpressionValueChangeListener.restoreState(facesContext,
new Object[] {methodExpressionOneArg, methodExpressionZeroArg});
// Test if the instance variables are set to the right values via reflection
Field oneArgField = MethodExpressionValueChangeListener.class.getDeclaredField("methodExpressionOneArg");
oneArgField.setAccessible(true);
assertEquals(methodExpressionOneArg, oneArgField.get(methodExpressionValueChangeListener));
Field zeroArgField = MethodExpressionValueChangeListener.class.getDeclaredField("methodExpressionZeroArg");
zeroArgField.setAccessible(true);
assertEquals(methodExpressionZeroArg, zeroArgField.get(methodExpressionValueChangeListener));
}
}