'GZipMiddleware makes a strong ETag weak.'

def test_strong_etag_modified(self):

    request = self.rf.get('/', HTTP_ACCEPT_ENCODING='gzip,    deflate')
    response = HttpResponse(self.compressible_string)
    response['ETag'] = '"eggs"'
    gzip_response = GZipMiddleware().process_response(request, response)
    self.assertEqual(gzip_response['ETag'], 'W/"eggs"')
