Spring Framework example source code file (BaseViewTests.java)

This example Spring Framework source code file (BaseViewTests.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 - Spring Framework tags/keywords

abstractview, abstractview, concreteview, concreteview, hashmap, http, httpservletrequest, httpservletresponse, io, map, properties, request, response, servlet, string, testview, testview, util, webapplicationcontext, webapplicationcontext

The Spring Framework BaseViewTests.java source code

/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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 org.springframework.web.servlet.view;

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import junit.framework.TestCase;
import org.easymock.MockControl;

import org.springframework.context.ApplicationContextException;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.mock.web.MockServletContext;
import org.springframework.web.context.WebApplicationContext;

/**
 * Tests for AbstractView. Not called AbstractViewTests as
 * would otherwise be excluded by Ant build script wildcard.
 *
 * @author Rod Johnson
 */
public class BaseViewTests extends TestCase {

	public void testRenderWithoutStaticAttributes() throws Exception {
		MockControl mc = MockControl.createControl(WebApplicationContext.class);
		WebApplicationContext wac = (WebApplicationContext) mc.getMock();
		wac.getServletContext();
		mc.setReturnValue(new MockServletContext());
		mc.replay();

		HttpServletRequest request = new MockHttpServletRequest();
		HttpServletResponse response = new MockHttpServletResponse();
		TestView tv = new TestView(request, response, wac);
		
		// Check superclass handles duplicate init
		tv.setApplicationContext(wac);		
		tv.setApplicationContext(wac);
		
		Map model = new HashMap();
		model.put("foo", "bar");
		model.put("something", new Object());
		tv.render(model, request, response);

		// check it contains all
		checkContainsAll(model, tv.model);
		
		assertTrue(tv.inited);
		mc.verify();
	}
	
	/**
	 * Test attribute passing, NOT CSV parsing.
	 */
	public void testRenderWithStaticAttributesNoCollision() throws Exception {
		MockControl mc = MockControl.createControl(WebApplicationContext.class);
		WebApplicationContext wac = (WebApplicationContext) mc.getMock();
		wac.getServletContext();
		mc.setReturnValue(new MockServletContext());
		mc.replay();

		HttpServletRequest request = new MockHttpServletRequest();
		HttpServletResponse response = new MockHttpServletResponse();
		TestView tv = new TestView(request, response, wac);
	
		tv.setApplicationContext(wac);
		Properties p = new Properties();	
		p.setProperty("foo", "bar");
		p.setProperty("something", "else");
		tv.setAttributes(p);	
	
		Map model = new HashMap();
		model.put("one", new HashMap());
		model.put("two", new Object());
		tv.render(model, request, response);

		// Check it contains all
		checkContainsAll(model, tv.model);
		checkContainsAll(p, tv.model);
	
		assertTrue(tv.inited);
		mc.verify();
	}
	
	public void testDynamicModelOverridesStaticAttributesIfCollision() throws Exception {
		MockControl mc = MockControl.createControl(WebApplicationContext.class);
		WebApplicationContext wac = (WebApplicationContext) mc.getMock();
		wac.getServletContext();
		mc.setReturnValue(new MockServletContext());
		mc.replay();

		HttpServletRequest request = new MockHttpServletRequest();
		HttpServletResponse response = new MockHttpServletResponse();
		TestView tv = new TestView(request, response, wac);

		tv.setApplicationContext(wac);
		Properties p = new Properties();	
		p.setProperty("one", "bar");
		p.setProperty("something", "else");
		tv.setAttributes(p);	

		Map model = new HashMap();
		model.put("one", new HashMap());
		model.put("two", new Object());
		tv.render(model, request, response);

		// Check it contains all
		checkContainsAll(model, tv.model);
		assertTrue(tv.model.size() == 3);
		// will have old something from properties
		assertTrue(tv.model.get("something").equals("else"));

		assertTrue(tv.inited);
		mc.verify();
	}
	
	public void testIgnoresNullAttributes() {
		AbstractView v = new ConcreteView();
		v.setAttributes(null);
		assertTrue(v.getStaticAttributes().size() == 0);
	}
	
	/**
	 * Test only the CSV parsing implementation.
	 */
	public void testAttributeCSVParsingIgnoresNull() {
		AbstractView v = new ConcreteView();
		v.setAttributesCSV(null);
		assertTrue(v.getStaticAttributes().size() == 0);
	}
	
	public void testAttributeCSVParsingIgnoresEmptyString() {
		AbstractView v = new ConcreteView();
		v.setAttributesCSV("");
		assertTrue(v.getStaticAttributes().size() == 0);
	}
	
	/**
	 * Format is attname0={value1},attname1={value1}
	 */
	public void testAttributeCSVParsingValid() {
		AbstractView v = new ConcreteView();
		v.setAttributesCSV("foo=[bar],king=[kong]");
		assertTrue(v.getStaticAttributes().size() == 2);
		assertTrue(v.getStaticAttributes().get("foo").equals("bar"));
		assertTrue(v.getStaticAttributes().get("king").equals("kong"));
	}
	
	public void testAttributeCSVParsingValidWithWeirdCharacters() {
		AbstractView v = new ConcreteView();
		String fooval = "owfie   fue&3[][[[2 \n\n \r  \t 8£3";
		// Also tests empty value
		String kingval = "";
		v.setAttributesCSV("foo=(" + fooval + "),king={" + kingval + "},f1=[we]");
		assertTrue(v.getStaticAttributes().size() == 3);
		assertTrue(v.getStaticAttributes().get("foo").equals(fooval));
		assertTrue(v.getStaticAttributes().get("king").equals(kingval));
	}
	
	public void testAttributeCSVParsingInvalid() {
		AbstractView v = new ConcreteView();
		try {
			// No equals
			v.setAttributesCSV("fweoiruiu");
			fail();
		}
		catch (IllegalArgumentException ex) {
		}
		
		try {
			// No value
			v.setAttributesCSV("fweoiruiu=");
			fail();
		}
		catch (IllegalArgumentException ex) {
		}
		
		try {
			// No closing ]
			v.setAttributesCSV("fweoiruiu=[");
			fail();
		}
		catch (IllegalArgumentException ex) {
		}
		try {
			// Second one is bogus
			v.setAttributesCSV("fweoiruiu=[de],=");
			fail();
		}
		catch (IllegalArgumentException ex) {
		}
	}
	
	public void testAttributeCSVParsingIgoresTrailingComma() {
		AbstractView v = new ConcreteView();
		v.setAttributesCSV("foo=[de],");
		assertTrue(v.getStaticAttributes().size() == 1);
	}
	
	/**
	 * Check that all keys in expected have same values in actual
	 * @param expected
	 * @param actual
	 */
	private void checkContainsAll(Map expected, Map actual) {
		Set keys = expected.keySet();
		for (Iterator iter = keys.iterator(); iter.hasNext();) {
			String key = (String) iter.next();
			//System.out.println("Checking model key " + key);
			assertTrue("Value for model key '" + key + "' must match", actual.get(key) == expected.get(key));			
		}
	}
	
	/**
	 * Trivial concrete subclass we can use when we're interested only
	 * in CSV parsing, which doesn't require lifecycle management
	 */
	private class ConcreteView extends AbstractView {
		// Do-nothing concrete subclass
		protected void renderMergedOutputModel(Map model, HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
			throw new UnsupportedOperationException();
		}
	}

	/**
	 * Single threaded subclass of AbstractView to check superclass
	 * behaviour
	 */
	private class TestView extends AbstractView {
		private HttpServletRequest request;
		private HttpServletResponse response;
		private WebApplicationContext wac;
		public boolean inited;
		
		/** Captured model in render */
		public Map model;
		
		public TestView(HttpServletRequest request, HttpServletResponse response, WebApplicationContext wac) {
			this.request = request;
			this.response = response;
			this.wac = wac;
			
		}
		protected void renderMergedOutputModel(Map model, HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
				// do nothing
				this.model = model;
			}
		/**
		 * @see org.springframework.context.support.ApplicationObjectSupport#initApplicationContext()
		 */
		protected void initApplicationContext() throws ApplicationContextException {
			if (inited)
				throw new RuntimeException("Already initialized");
			this.inited = true;
			assertTrue(getApplicationContext() == wac);
		}

	}

}