/*
* $Id: MockPageContext.java 471754 2006-11-06 14:55:09Z husted $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.struts.mock;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.BodyContent;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
/**
* <p>Mock <strong>ServletContext</strong> object for low-level unit tests of
* Struts controller components. Coarser grained tests should be implemented
* in terms of the Cactus framework, instead of the mock object classes.</p>
*
* <p><strong>WARNING</strong> - Only the minimal set of methods needed to
* create unit tests is provided, plus additional methods to configure this
* object as necessary. Methods for unsupported operations will throw
* <code>UnsupportedOperationException</code>.</p>
*
* <p><strong>WARNING</strong> - Because unit tests operate in a single
* threaded environment, no synchronization is performed.</p>
*
* @version $Rev: 471754 $ $Date: 2005-05-07 12:45:39 -0400 (Sat, 07 May 2005)
* $
*/
public class MockPageContext extends PageContext {
// ----------------------------------------------------- Instance Variables
protected ServletContext application = null;
protected HashMap attributes = new HashMap(); // Page scope attributes
protected ServletConfig config = null;
protected ServletRequest request = null;
protected ServletResponse response = null;
protected HttpSession session = null;
private boolean throwIOException;
private boolean returnBodyContent;
// ----------------------------------------------------------- Constructors
public MockPageContext() {
super();
}
public MockPageContext(ServletConfig config, ServletRequest request,
ServletResponse response) {
super();
setValues(config, request, response);
}
/**
* <p> Construct a new PageContext impl. </p>
*
* @param throwIOException Determines if the returned JspWriter should
* throw an IOException on any method call.
* @param returnBody Determines if getOut() should return a new
* <code>JspWriter</code> or a <code>BodyContent</code>.
*/
public MockPageContext(boolean throwIOException, boolean returnBody) {
this.throwIOException = throwIOException;
this.returnBodyContent = returnBody;
}
private void checkAndThrow()
throws IOException {
if (throwIOException) {
throw new IOException();
}
}
// --------------------------------------------------------- Public Methods
public void setValues(ServletConfig config, ServletRequest request,
ServletResponse response) {
this.config = config;
if (config != null) {
this.application = config.getServletContext();
} else {
this.application = null;
}
this.request = request;
this.response = response;
if (request != null) {
session = ((HttpServletRequest) request).getSession(false);
} else {
this.session = null;
}
}
// ---------------------------------------------------- PageContext Methods
public Object findAttribute(String name) {
Object value = getAttribute(name, PageContext.PAGE_SCOPE);
if (value == null) {
value = getAttribute(name, PageContext.REQUEST_SCOPE);
}
if (value == null) {
value = getAttribute(name, PageContext.SESSION_SCOPE);
}
if (value == null) {
value = getAttribute(name, PageContext.APPLICATION_SCOPE);
}
return (value);
}
public void forward(String path) {
throw new UnsupportedOperationException();
}
public Object getAttribute(String name) {
return (getAttribute(name, PageContext.PAGE_SCOPE));
}
public Object getAttribute(String name, int scope) {
if (scope == PageContext.PAGE_SCOPE) {
return (attributes.get(name));
} else if (scope == PageContext.REQUEST_SCOPE) {
if (request != null) {
return (request.getAttribute(name));
}
return (null);
} else if (scope == PageContext.SESSION_SCOPE) {
if (session != null) {
return (session.getAttribute(name));
}
return (null);
} else if (scope == PageContext.APPLICATION_SCOPE) {
if (application != null) {
return (application.getAttribute(name));
}
return (null);
} else {
throw new IllegalArgumentException("Invalid scope " + scope);
}
}
public Enumeration getAttributeNamesInScope(int scope) {
if (scope == PageContext.PAGE_SCOPE) {
return (new MockEnumeration(attributes.keySet().iterator()));
} else if (scope == PageContext.REQUEST_SCOPE) {
if (request != null) {
return (request.getAttributeNames());
}
return (new MockEnumeration(Collections.EMPTY_LIST.iterator()));
} else if (scope == PageContext.SESSION_SCOPE) {
if (session != null) {
return (session.getAttributeNames());
}
return (new MockEnumeration(Collections.EMPTY_LIST.iterator()));
} else if (scope == PageContext.APPLICATION_SCOPE) {
if (application != null) {
return (application.getAttributeNames());
}
return new MockEnumeration(Collections.EMPTY_LIST.iterator());
} else {
throw new IllegalArgumentException("Invalid scope " + scope);
}
}
public int getAttributesScope(String name) {
if (attributes.get(name) != null) {
return (PageContext.PAGE_SCOPE);
} else if ((request != null) && (request.getAttribute(name) != null)) {
return (PageContext.REQUEST_SCOPE);
} else if ((session != null) && (session.getAttribute(name) != null)) {
return (PageContext.SESSION_SCOPE);
} else if ((application != null)
&& (application.getAttribute(name) != null)) {
return (PageContext.APPLICATION_SCOPE);
} else {
return (0);
}
}
public Exception getException() {
throw new UnsupportedOperationException();
}
/**
* <p> Custom JspWriter that throws the specified exception (supplied on
* the constructor...if any), else it simply returns. </p>
*/
public JspWriter getOut() {
JspWriter jspWriter =
new JspWriter(0, false) {
public void print(String s)
throws IOException {
checkAndThrow();
}
public void newLine()
throws IOException {
checkAndThrow();
}
public void print(boolean b)
throws IOException {
checkAndThrow();
}
public void print(char c)
throws IOException {
checkAndThrow();
}
public void print(int i)
throws IOException {
checkAndThrow();
}
public void print(long l)
throws IOException {
checkAndThrow();
}
public void print(float f)
throws IOException {
checkAndThrow();
}
public void print(double d)
throws IOException {
checkAndThrow();
}
public void print(char[] s)
throws IOException {
checkAndThrow();
}
public void print(Object obj)
throws IOException {
checkAndThrow();
}
public void println()
throws IOException {
checkAndThrow();
}
public void println(boolean x)
throws IOException {
checkAndThrow();
}
public void println(char x)
throws IOException {
checkAndThrow();
}
public void println(int x)
throws IOException {
checkAndThrow();
}
public void println(long x)
throws IOException {
checkAndThrow();
}
public void println(float x)
throws IOException {
checkAndThrow();
}
public void println(double x)
throws IOException {
checkAndThrow();
}
public void println(char[] x)
throws IOException {
checkAndThrow();
}
public void println(String x)
throws IOException {
checkAndThrow();
}
public void println(Object x)
throws IOException {
checkAndThrow();
}
public void clear()
throws IOException {
checkAndThrow();
}
public void clearBuffer()
throws IOException {
checkAndThrow();
}
public void flush()
throws IOException {
checkAndThrow();
}
public void close()
throws IOException {
checkAndThrow();
}
public int getRemaining() {
return 0;
}
public void write(char[] cbuf, int off, int len)
throws IOException {
checkAndThrow();
}
};
if (returnBodyContent) {
return new BodyContent(jspWriter) {
public Reader getReader() {
return null;
}
public String getString() {
return null;
}
public void writeOut(Writer out)
throws IOException {
checkAndThrow();
}
public void newLine()
throws IOException {
checkAndThrow();
}
public void print(boolean b)
throws IOException {
checkAndThrow();
}
public void print(char c)
throws IOException {
checkAndThrow();
}
public void print(int i)
throws IOException {
checkAndThrow();
}
public void print(long l)
throws IOException {
checkAndThrow();
}
public void print(float f)
throws IOException {
checkAndThrow();
}
public void print(double d)
throws IOException {
checkAndThrow();
}
public void print(char[] s)
throws IOException {
checkAndThrow();
}
public void print(String s)
throws IOException {
checkAndThrow();
}
public void print(Object obj)
throws IOException {
checkAndThrow();
}
public void println()
throws IOException {
checkAndThrow();
}
public void println(boolean x)
throws IOException {
checkAndThrow();
}
public void println(char x)
throws IOException {
checkAndThrow();
}
public void println(int x)
throws IOException {
checkAndThrow();
}
public void println(long x)
throws IOException {
checkAndThrow();
}
public void println(float x)
throws IOException {
checkAndThrow();
}
public void println(double x)
throws IOException {
checkAndThrow();
}
public void println(char[] x)
throws IOException {
checkAndThrow();
}
public void println(String x)
throws IOException {
checkAndThrow();
}
public void println(Object x)
throws IOException {
checkAndThrow();
}
public void clear()
throws IOException {
checkAndThrow();
}
public void clearBuffer()
throws IOException {
checkAndThrow();
}
public void close()
throws IOException {
checkAndThrow();
}
public int getRemaining() {
return 0;
}
public void write(char[] cbuf, int off, int len)
throws IOException {
checkAndThrow();
}
};
}
return jspWriter;
}
public Object getPage() {
throw new UnsupportedOperationException();
}
public ServletRequest getRequest() {
return (this.request);
}
public ServletResponse getResponse() {
return (this.response);
}
public ServletConfig getServletConfig() {
return (this.config);
}
public ServletContext getServletContext() {
return (this.application);
}
public HttpSession getSession() {
return (this.session);
}
public void handlePageException(Exception e) {
throw new UnsupportedOperationException();
}
public void handlePageException(Throwable t) {
throw new UnsupportedOperationException();
}
public void include(String path) {
throw new UnsupportedOperationException();
}
public void initialize(Servlet servlet, ServletRequest request,
ServletResponse response, String errorPageURL, boolean needsSession,
int bufferSize, boolean autoFlush) {
throw new UnsupportedOperationException();
}
public JspWriter popBody() {
throw new UnsupportedOperationException();
}
public BodyContent pushBody() {
throw new UnsupportedOperationException();
}
public void release() {
throw new UnsupportedOperationException();
}
public void removeAttribute(String name) {
int scope = getAttributesScope(name);
if (scope != 0) {
removeAttribute(name, scope);
}
}
public void removeAttribute(String name, int scope) {
if (scope == PageContext.PAGE_SCOPE) {
attributes.remove(name);
} else if (scope == PageContext.REQUEST_SCOPE) {
if (request != null) {
request.removeAttribute(name);
}
} else if (scope == PageContext.SESSION_SCOPE) {
if (session != null) {
session.removeAttribute(name);
}
} else if (scope == PageContext.APPLICATION_SCOPE) {
if (application != null) {
application.removeAttribute(name);
}
} else {
throw new IllegalArgumentException("Invalid scope " + scope);
}
}
public void setAttribute(String name, Object value) {
setAttribute(name, value, PageContext.PAGE_SCOPE);
}
public void setAttribute(String name, Object value, int scope) {
if (scope == PageContext.PAGE_SCOPE) {
attributes.put(name, value);
} else if (scope == PageContext.REQUEST_SCOPE) {
if (request != null) {
request.setAttribute(name, value);
}
} else if (scope == PageContext.SESSION_SCOPE) {
if (session != null) {
session.setAttribute(name, value);
}
} else if (scope == PageContext.APPLICATION_SCOPE) {
if (application != null) {
application.setAttribute(name, value);
}
} else {
throw new IllegalArgumentException("Invalid scope " + scope);
}
}
}