Struts example source code file (ModelDrivenInterceptorTest.java)

This example Struts source code file (ModelDrivenInterceptorTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

actionsupport, date, exception, exception, file, modeldrivenaction, modeldrivenaction, modeldriveninterceptor, object, object, override, preresultlistener, util, valuestack, valuestack

The Struts ModelDrivenInterceptorTest.java source code

/*
 * Copyright 2002-2003,2009 The Apache Software Foundation.
 * 
 * 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.opensymphony.xwork2.interceptor;

import com.mockobjects.dynamic.ConstraintMatcher;
import com.mockobjects.dynamic.Mock;
import com.opensymphony.xwork2.*;
import com.opensymphony.xwork2.util.ValueStack;

import java.util.Date;


/**
 * @author $Author: martinc $
 * @version $Revision: 894090 $
 */
public class ModelDrivenInterceptorTest extends XWorkTestCase {

    Action action;
    Mock mockActionInvocation;
    ModelDrivenInterceptor modelDrivenInterceptor;
    Object model;
    PreResultListener preResultListener;


    public void testModelDrivenGetsPushedOntoStack() throws Exception {
        ValueStack stack = ActionContext.getContext().getValueStack();
        action = new ModelDrivenAction();
        mockActionInvocation.expectAndReturn("getAction", action);
        mockActionInvocation.expectAndReturn("getStack", stack);
        mockActionInvocation.expectAndReturn("invoke", "foo");

        modelDrivenInterceptor.intercept((ActionInvocation) mockActionInvocation.proxy());

        Object topOfStack = stack.pop();
        assertEquals("our model should be on the top of the stack", model, topOfStack);
    }

    public void testModelDrivenUpdatedAndGetsPushedOntoStack() throws Exception {
        ValueStack stack = ActionContext.getContext().getValueStack();
        action = new ModelDrivenAction();
        mockActionInvocation.expectAndReturn("getAction", action);
        mockActionInvocation.matchAndReturn("getStack", stack);
        mockActionInvocation.expectAndReturn("invoke", "foo");
        mockActionInvocation.expect("addPreResultListener", new ConstraintMatcher() {

            public boolean matches(Object[] objects) {
                preResultListener = (PreResultListener) objects[0];
                return true;
            }

            public Object[] getConstraints() {
                return new Object[0];  //To change body of implemented methods use File | Settings | File Templates.
            }
        });
        modelDrivenInterceptor.setRefreshModelBeforeResult(true);

        modelDrivenInterceptor.intercept((ActionInvocation) mockActionInvocation.proxy());
        assertNotNull(preResultListener);
        model = "this is my model";
        preResultListener.beforeResult((ActionInvocation) mockActionInvocation.proxy(), "success");

        Object topOfStack = stack.pop();
        assertEquals("our model should be on the top of the stack", model, topOfStack);
        assertEquals(1, stack.getRoot().size());
    }

    public void testStackNotModifedForNormalAction() throws Exception {
        action = new ActionSupport();
        mockActionInvocation.expectAndReturn("getAction", action);
        mockActionInvocation.expectAndReturn("invoke", "foo");

        // nothing should happen
        modelDrivenInterceptor.intercept((ActionInvocation) mockActionInvocation.proxy());
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mockActionInvocation = new Mock(ActionInvocation.class);
        modelDrivenInterceptor = new ModelDrivenInterceptor();
        model = new Date(); // any object will do
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        mockActionInvocation.verify();
    }


    public class ModelDrivenAction extends ActionSupport implements ModelDriven {

        public Object getModel() {
            return model;
        }

    }
}