Re: HeadMethodWebRequest problems

"Wolfgang Fahl" <[email protected]> Wed, 19 Aug 2009 12:47:42 +0200
Newsgroups gmane.comp.web.httpunit.devel
Organization BITPlan GmbH
Message-ID <[email protected]> 
Dear Dan,

thanks for pointing this out and supplying the testCase.

Subversion Revision 1040
http://httpunit.svn.sourceforge.net/viewvc/httpunit?view=rev&revision=1040

has the fix for it.

WebPageText.java contains your test. I have added an 
assertion that no body is returned as asked for in 
RFC 2616 
http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
    9.4 HEAD
The HEAD method is identical to GET except that the server MUST NOT return a message-body in the response. The metainformation contained in the HTTP headers in 
response to a HEAD request SHOULD be identical to the information sent in response to a GET request. This method can be used for obtaining metainformation about 
the entity implied by the request without transferring the entity-body itself. This method is often used for testing hypertext links for validity, accessibility, and recent 
modification. 
The response to a HEAD request MAY be cacheable in the sense that the information contained in the response MAY be used to update a previously cached entity from 
that resource. If the new field values indicate that the cached entity differs from the current entity (as would be indicated by a change in Content-Length, Content-MD5, 
ETag or Last-Modified), then the cache MUST treat the cache entry as stale. 



    /**
     * add test for HeadMethodWebRequest 
     * @author Dan Lipofsky 2009-08-19
     * @throws Exception
     */
    public void testHeadMethodWebRequest() throws Exception {
        defineResource( "SimplePage.html",
            "<html><head><title>A Sample Page</title></head>\n" +
            "<body>Hello</body></html>\n" );
        HttpUnitOptions.setExceptionsThrownOnErrorStatus(true);
        WebConversation wc = new WebConversation();
        // create a HeadMethodWebRequest
        // see http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html for definition
        WebRequest request = new HeadMethodWebRequest( getHostPath() + "/SimplePage.html" );
        WebResponse simplePage = wc.getResponse( request );
        String text=simplePage.getText();
        // no body should be returned
        assertEquals("",text);
      }


Keep up the good work!

Yours
  Wolfgang

> I tried to use HeadMethodWebRequest, but I have problems because it is
> calling the HTMLParser I set with HTMLParserFactory.setHTMLParser(...)
> which it shouldn't be doing because HEAD will have no body in the response.
> 
> I tried to look in the unit tests, and I see no tests
> for HeadMethodWebRequest.  Perhaps the test server doesn't
> support it because this gave me a 404:
> 
>   public void testHead() throws Exception {
>     defineResource( "SimplePage.html",
>         "<html><head><title>A Sample Page</title></head>\n" +
>         "<body>Hello</body></html>\n" );
>     HttpUnitOptions.setExceptionsThrownOnErrorStatus(true);
>     WebConversation wc = new WebConversation();
>     WebRequest request = new HeadMethodWebRequest( getHostPath() + "/SimplePage.html" );
>     WebResponse simplePage = wc.getResponse( request );
>   }


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