Spring Framework example source code file (SimpleMappingExceptionResolverTests.java)

This example Spring Framework source code file (SimpleMappingExceptionResolverTests.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

anotherexception, anotheroddexception, class, exception, exception, handler, modelandview, modelandview, object, properties, properties, someoddexception, someoddexception, someoddexceptionchild, util

The Spring Framework SimpleMappingExceptionResolverTests.java source code

/*
 * Copyright 2002-2007 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.portlet.handler;

import java.util.Collections;
import java.util.Properties;

import javax.portlet.WindowState;

import junit.framework.TestCase;

import org.springframework.mock.web.portlet.MockRenderRequest;
import org.springframework.mock.web.portlet.MockRenderResponse;
import org.springframework.web.portlet.ModelAndView;

/**
 * @author Seth Ladd
 * @author Mark Fisher
 * @author Juergen Hoeller
 */
public class SimpleMappingExceptionResolverTests extends TestCase {
	
	private static final String DEFAULT_VIEW = "default-view";

	private SimpleMappingExceptionResolver exceptionResolver;
	private MockRenderRequest request;
	private MockRenderResponse response;
	private Object handler1;
	private Object handler2;
	private Exception genericException;

	protected void setUp() {
		exceptionResolver = new SimpleMappingExceptionResolver();
		request = new MockRenderRequest();
		response = new MockRenderResponse();
		handler1 = new String();
		handler2 = new Object();
		genericException = new Exception();
	}
	
	public void testSetOrder() {
		exceptionResolver.setOrder(2);
		assertEquals(2, exceptionResolver.getOrder());
	}
	
	public void testDefaultErrorView() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals(DEFAULT_VIEW, mav.getViewName());
		assertEquals(genericException, mav.getModel().get(SimpleMappingExceptionResolver.DEFAULT_EXCEPTION_ATTRIBUTE));
	}
	
	public void testDefaultErrorViewDifferentHandler() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler2, genericException);
		assertNull("Handler not mapped - ModelAndView should be null", mav);
	}

	public void testDefaultErrorViewDifferentHandlerClass() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		exceptionResolver.setMappedHandlerClasses(new Class[] {String.class});
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler2, genericException);
		assertNull("Handler not mapped - ModelAndView should be null", mav);
	}

	public void testNullDefaultErrorView() {
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertNull("No default error view set - ModelAndView should be null", mav);
	}

	public void testNullExceptionAttribute() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		exceptionResolver.setExceptionAttribute(null);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals(DEFAULT_VIEW, mav.getViewName());
		assertNull(mav.getModel().get(SimpleMappingExceptionResolver.DEFAULT_EXCEPTION_ATTRIBUTE));
	}
	
	public void testNullExceptionMappings() {
		exceptionResolver.setExceptionMappings(null);
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals(DEFAULT_VIEW, mav.getViewName());
	}
	
	public void testDefaultNoRenderWhenMinimized() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		request.setWindowState(WindowState.MINIMIZED);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertNull("Should not render when WindowState is MINIMIZED", mav);
	}

	public void testDoRenderWhenMinimized() {
		exceptionResolver.setDefaultErrorView(DEFAULT_VIEW);
		exceptionResolver.setRenderWhenMinimized(true);
		request.setWindowState(WindowState.MINIMIZED);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertNotNull("ModelAndView should not be null", mav);
		assertEquals(DEFAULT_VIEW, mav.getViewName());
	}
	
	public void testSimpleExceptionMapping() {
		Properties props = new Properties();
		props.setProperty("Exception", "error");
		exceptionResolver.setWarnLogCategory("HANDLER_EXCEPTION");
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}
	
	public void testExactExceptionMappingWithHandlerSpecified() {
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}
	
	public void testExactExceptionMappingWithHandlerClassSpecified() {
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		exceptionResolver.setMappedHandlerClasses(new Class[] {String.class});
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}

	public void testExactExceptionMappingWithHandlerInterfaceSpecified() {
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		exceptionResolver.setMappedHandlerClasses(new Class[] {Comparable.class});
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}

	public void testSimpleExceptionMappingWithHandlerSpecifiedButWrongHandler() {
		Properties props = new Properties();
		props.setProperty("Exception", "error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler2, genericException);
		assertNull("Handler not mapped - ModelAndView should be null", mav);
	}

	public void testSimpleExceptionMappingWithHandlerSpecifiedButWrongHandlerClass() {
		Properties props = new Properties();
		props.setProperty("Exception", "error");
		exceptionResolver.setMappedHandlerClasses(new Class[] {String.class});
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler2, genericException);
		assertNull("Handler not mapped - ModelAndView should be null", mav);
	}

	public void testMissingExceptionInMapping() {
		Properties props = new Properties();
		props.setProperty("SomeFooThrowable", "error");
		exceptionResolver.setWarnLogCategory("HANDLER_EXCEPTION");
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertNull("Exception not mapped - ModelAndView should be null", mav);
	}
	
	public void testTwoMappings() {
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		props.setProperty("AnotherException", "another-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}
	
	public void testTwoMappingsOneShortOneLong() {
		Properties props = new Properties();
		props.setProperty("Exception", "error");
		props.setProperty("AnotherException", "another-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, genericException);
		assertEquals("error", mav.getViewName());
	}
	
	public void testTwoMappingsOneShortOneLongThrowOddException() {
		Exception oddException = new SomeOddException();
		Properties props = new Properties();
		props.setProperty("Exception", "error");
		props.setProperty("SomeOddException", "another-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, oddException);
		assertEquals("error", mav.getViewName());
	}
	
	public void testTwoMappingsThrowOddExceptionUseLongExceptionMapping() {
		Exception oddException = new SomeOddException();
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		props.setProperty("SomeOddException", "another-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, oddException);
		assertEquals("another-error", mav.getViewName());
	}
	
	public void testThreeMappings() {
		Exception oddException = new AnotherOddException();
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		props.setProperty("SomeOddException", "another-error");
		props.setProperty("AnotherOddException", "another-some-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, oddException);
		assertEquals("another-some-error", mav.getViewName());
	}
	
	public void testExceptionWithSubstringMatchingParent() {
		Exception oddException = new SomeOddExceptionChild();
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		props.setProperty("SomeOddException", "parent-error");
		props.setProperty("SomeOddExceptionChild", "child-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, oddException);
		assertEquals("child-error", mav.getViewName());		
	}
	
	public void testMostSpecificExceptionInHierarchyWins() {
		Exception oddException = new NoSubstringMatchesThisException();
		Properties props = new Properties();
		props.setProperty("java.lang.Exception", "error");
		props.setProperty("SomeOddException", "parent-error");
		exceptionResolver.setMappedHandlers(Collections.singleton(handler1));
		exceptionResolver.setExceptionMappings(props);
		ModelAndView mav = exceptionResolver.resolveException(request, response, handler1, oddException);
		assertEquals("parent-error", mav.getViewName());		
	}


	private static class SomeOddException extends Exception {

	}
	

	private static class SomeOddExceptionChild extends SomeOddException {

	}
	

	private static class NoSubstringMatchesThisException extends SomeOddException {

	}


	private static class AnotherOddException extends Exception {

	}
	
}