support for http delete method

Index: httpunit/test/com/meterware/httpunit/WebClientTest.java
===================================================================
--- httpunit/test/com/meterware/httpunit/WebClientTest.java	(revision 1060)
+++ httpunit/test/com/meterware/httpunit/WebClientTest.java	(working copy)
@@ -1121,4 +1121,24 @@
         assertEquals( "Submitted cookie header", "found cookies: type=short", wr.getText() );
     }
 
+
+    public void testDelete() throws Exception {
+    	String resourceName = "something/to/delete";
+    	String responseBody = "deleted";
+    	String contentType = "text/plain";
+
+        defineResource( resourceName, new PseudoServlet() {
+            public WebResource getDeleteResponse() {
+                return new WebResource( responseBody, contentType );
+            }
+        } );
+
+        WebConversation wc = new WebConversation();
+        WebRequest request = new DeleteMethodWebRequest( getHostPath() + '/' + resourceName );
+        WebResponse response = wc.getResponse( request );
+
+        assertEquals( "requested resource", responseBody, response.getText().trim() );
+        assertEquals( "content type", contentType, response.getContentType() );
+    }
+
  }
Index: httpunit/src/com/meterware/httpunit/DeleteMethodWebRequest.java
===================================================================
--- httpunit/src/com/meterware/httpunit/DeleteMethodWebRequest.java	(revision 0)
+++ httpunit/src/com/meterware/httpunit/DeleteMethodWebRequest.java	(revision 0)
@@ -0,0 +1,142 @@
+package com.meterware.httpunit;
+/********************************************************************************************************************
+* $Id: GetMethodWebRequest.java 1040 2009-08-19 09:00:49Z wolfgang_fahl $
+*
+* Copyright (c) 2009, Matthew M. Boedicker
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+* documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+* to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions
+* of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+* THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+* DEALINGS IN THE SOFTWARE.
+*
+*******************************************************************************************************************/
+import org.w3c.dom.Element;
+
+import java.net.URL;
+
+/**
+ * An HTTP request using the DELETE method. 
+ * RFC 2616 http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html defines: 
+ * 
+ * 9.7 DELETE
+ * 
+ * The DELETE method requests that the origin server delete the resource identified
+ * by the Request-URI. This method MAY be overridden by human intervention (or other
+ * means) on the origin server. The client cannot be guaranteed that the operation
+ * has been carried out, even if the status code returned from the origin server
+ * indicates that the action has been completed successfully. However, the server
+ * SHOULD NOT indicate success unless, at the time the response is given, it
+ * intends to delete the resource or move it to an inaccessible location.
+ * 
+ * A successful response SHOULD be 200 (OK) if the response includes an entity
+ * describing the status, 202 (Accepted) if the action has not yet been enacted, or
+ * 204 (No Content) if the action has been enacted but the response does not include
+ * an entity.
+ * 
+ * If the request passes through a cache and the Request-URI identifies one or more
+ * currently cached entities, those entries SHOULD be treated as stale. Responses to
+ * this method are not cacheable. 
+**/
+public class DeleteMethodWebRequest extends HeaderOnlyWebRequest {
+
+	/**
+	 * initialize me - set method to DELETE
+	 */
+	private void init() {
+		super.setMethod("DELETE");
+	}
+
+    /**
+     * Constructs a web request using a specific absolute url string.
+     **/
+    public DeleteMethodWebRequest( String urlString ) {
+        super( urlString );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request using a base URL and a relative url string.
+     **/
+    public DeleteMethodWebRequest( URL urlBase, String urlString ) {
+        super( urlBase, urlString );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request with a specific target.
+     **/
+    public DeleteMethodWebRequest( URL urlBase, String urlString, String target ) {
+        super( urlBase, urlString, target );
+        init();
+    }
+
+
+//--------------------------------------- package members ---------------------------------------------
+
+
+    /**
+     * Constructs a web request for a form submitted from JavaScript.
+     **/
+    DeleteMethodWebRequest( WebForm sourceForm ) {
+        super( sourceForm );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request for a link or image.
+     **/
+    DeleteMethodWebRequest( FixedURLWebRequestSource source ) {
+        super( source );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request with a specific target.
+     **/
+    DeleteMethodWebRequest( WebResponse referer, Element sourceElement, URL urlBase, String urlString, String target ) {
+        super( referer, sourceElement, urlBase, urlString, target );
+        init();
+    }
+
+
+    /**
+     * Constructs an initial web request for a frame.
+     **/
+    DeleteMethodWebRequest( URL urlBase, String urlString, FrameSelector frame ) {
+        super( urlBase, urlString, frame );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request for a javascript open call.
+     **/
+    DeleteMethodWebRequest( URL urlBase, String urlString, FrameSelector frame, String target ) {
+        super( urlBase, urlString, frame, target );
+        init();
+    }
+
+
+    /**
+     * Constructs a web request for a form.
+     **/
+    DeleteMethodWebRequest( WebForm sourceForm, ParameterHolder parameterHolder, SubmitButton button, int x, int y ) {
+        super( sourceForm, parameterHolder, button, x, y );
+        init();
+    }
+
+
+}
Index: httpunit/src/com/meterware/pseudoserver/PseudoServlet.java
===================================================================
--- httpunit/src/com/meterware/pseudoserver/PseudoServlet.java	(revision 1060)
+++ httpunit/src/com/meterware/pseudoserver/PseudoServlet.java	(working copy)
@@ -42,6 +42,8 @@
             return getPutResponse();
         } else if (methodType.equalsIgnoreCase( "POST" )) {
             return getPostResponse();
+        } else if (methodType.equalsIgnoreCase( "DELETE" )) {
+            return getDeleteResponse();
         } else {
             throw new UnknownMethodException( methodType );
         }
@@ -72,6 +74,14 @@
     }
 
 
+    /*
+     * Returns a resource object as a result of a delete request. 
+     **/ 
+    public WebResource getDeleteResponse() throws IOException {
+        throw new UnknownMethodException( "DELETE" );
+    }
+
+
     void init( HttpRequest requestStream ) {
         _request = requestStream;
     }