/*
    * $Id: MockServletContext.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 org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import javax.servlet.RequestDispatcher;
  import javax.servlet.Servlet;
  import javax.servlet.ServletContext;
  
  import java.io.InputStream;
  
  import java.net.URL;
  
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.Set;
  
  /**
   * <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 12:11:38 -0400 (Sat, 07 May 2005)
   *          $
   */
  public class MockServletContext implements ServletContext {
      // ----------------------------------------------------- Instance Variables
  
      /**
       * <p> The set of servlet context attributes. </p>
       */
      protected HashMap attributes = new HashMap();
  
      /**
       * <p> Default destination for <code>LOG()</code> output. </p>
       */
      protected Log log = LogFactory.getLog(MockServletContext.class);
  
      /**
       * <p> The set of context initialization parameters. </p>
       */
      protected HashMap parameters = new HashMap();
  
      // --------------------------------------------------------- Public Methods
      public void addInitParameter(String name, String value) {
          parameters.put(name, value);
      }
  
      public void setLog(Log log) {
          this.log = log;
      }
  
      // ------------------------------------------------- ServletContext Methods
      public Object getAttribute(String name) {
          return (attributes.get(name));
      }
  
      public Enumeration getAttributeNames() {
          return (new MockEnumeration(attributes.keySet().iterator()));
      }
  
      public ServletContext getContext(String uripath) {
          throw new UnsupportedOperationException();
      }
  
      public String getInitParameter(String name) {
          return ((String) parameters.get(name));
      }
  
      public Enumeration getInitParameterNames() {
          return (new MockEnumeration(parameters.keySet().iterator()));
     }
 
     public int getMajorVersion() {
         return (2);
     }
 
     public String getMimeType(String file) {
         throw new UnsupportedOperationException();
     }
 
     public int getMinorVersion() {
         return (3);
     }
 
     public RequestDispatcher getNamedDispatcher(String name) {
         throw new UnsupportedOperationException();
     }
 
     public String getRealPath(String path) {
         throw new UnsupportedOperationException();
     }
 
     public RequestDispatcher getRequestDispatcher(String path) {
         throw new UnsupportedOperationException();
     }
 
     public URL getResource(String path) {
         return this.getClass().getResource(path);
 
         //throw new UnsupportedOperationException();
     }
 
     public InputStream getResourceAsStream(String path) {
         return this.getClass().getResourceAsStream(path);
 
         //throw new UnsupportedOperationException();
     }
 
     public Set getResourcePaths(String path) {
         throw new UnsupportedOperationException();
     }
 
     public String getServerInfo() {
         return ("MockServletContext/$Version$");
     }
 
     public Servlet getServlet(String name) {
         throw new UnsupportedOperationException();
     }
 
     public String getServletContextName() {
         return (getServerInfo());
     }
 
     public Enumeration getServletNames() {
         throw new UnsupportedOperationException();
     }
 
     public Enumeration getServlets() {
         throw new UnsupportedOperationException();
     }
 
     public void log(Exception exception, String message) {
         log(message, exception);
     }
 
     public void log(String message) {
         log.info(message);
     }
 
     public void log(String message, Throwable throwable) {
         log.error(message, throwable);
     }
 
     public void removeAttribute(String name) {
         attributes.remove(name);
     }
 
     public void setAttribute(String name, Object value) {
         if (value == null) {
             attributes.remove(name);
         } else {
             attributes.put(name, value);
         }
     }
 }