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#!/usr/bin/env python
# encoding: utf-8
"""
W3CLikCheckerClient.py
Simple client lib to interact with the W3C Link Checker
Created by olivier Thereaux on 2008-01-22.
Copyright (c) 2008 W3C. Licensed under the W3C Software License
http://www.w3.org/Consortium/Legal/copyright-software
"""
import sys
import os
import re
import unittest
import urllib, urllib2
import xml.etree.cElementTree as ET
class W3CValidatorHTTP:
"""Fetch and parse results from a validator using the W3C Validator SOAP API"""
def __init__(self, check_URI=None):
if check_URI != None:
self.check_URI= check_URI+'?uri=%(URI)s'
else:
self.check_URI= 'http://qa-dev.w3.org/wmvs/HEAD/check?uri=%(URI)s'
def call_check(self, TC_uri):
"""Make a request to the checker and store its response"""
data = urllib.quote(TC_uri, "")
final_checker_URI = self.check_URI % {"URI": data }
try:
response = urllib2.urlopen(final_checker_URI)
except (urllib2.HTTPError, urllib2.URLError) as exc:
return (None, str(exc) + ": " + final_checker_URI)
return (response, None)
def parse_response(self, response):
"""Parse a W3C Markup Validator Response via its HTTP headers"""
response_headers = response.info()
results = dict()
results["NumErrors"] = response_headers.getheader("x-w3c-validator-errors")
results["NumWarnings"] = response_headers.getheader("x-w3c-validator-warnings")
results["Validity"] = response_headers.getheader("x-w3c-validator-status")
if results["Validity"] == "Valid":
results["Validity"] = "Pass"
if results["Validity"] == "Invalid":
results["Validity"] = "Fail"
return results
class W3CValidatorHTTP_test(unittest.TestCase):
"""Unit testing for sanity of W3CValidatorAPI code"""
def setUp(self):
pass
def test_init(self):
"""Test initializing a client to W3C validator HTTP results"""
default_checker = W3CValidatorHTTP()
self.assertEqual(default_checker.check_URI, 'http://qa-dev.w3.org/wmvs/HEAD/check?uri=%(URI)s')
def test_contact_default(self):
"""Test Contacting the default validator instance"""
default_checker = W3CValidatorHTTP()
(res, err) = default_checker.call_check("http://www.w3.org")
self.assertEqual(err, None)
self.assertNotEqual(res, None)
def test_contact_vwo(self):
"""Test Contacting the main W3C validator instance"""
default_checker = W3CValidatorHTTP("http://validator.w3.org/check?uri=%(URI)s")
(res, err) = default_checker.call_check("http://www.w3.org")
self.assertEqual(err, None)
self.assertNotEqual(res, None)
def test_parse_response(self):
"""Test parsing response from default validator instance"""
default_checker = W3CValidatorHTTP()
(res, err) = default_checker.call_check("http://www.w3.org")
self.assertEqual(err, None)
results = default_checker.parse_response(res)
self.assert_(isinstance(results,dict))
def test_parse_response_invalid(self):
"""Test parsing response for a known invalid resource"""
default_checker = W3CValidatorHTTP()
(res, err) = default_checker.call_check("http://qa-dev.w3.org/wmvs/HEAD/dev/tests/xhtml1-bogus-element.html")
self.assertEqual(err, None)
results = default_checker.parse_response(res)
self.assertNotEquals(results["NumErrors"], 0)
def test_parse_response_valid(self):
"""Test parsing response for a known valid HTML resource"""
default_checker = W3CValidatorHTTP()
(res, err) = default_checker.call_check("http://qa-dev.w3.org/wmvs/HEAD/dev/tests/html20.html")
self.assertEqual(err, None)
results = default_checker.parse_response(res)
self.assertNotEquals([results["NumErrors"], results["Validity"]], [0, "Valid"])
if __name__ == '__main__':
unittest.main()
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