test_etree.py 文件源码

def test_resolve_filename_dtd(self):
        parse = self.etree.parse
        parser = self.etree.XMLParser(attribute_defaults=True)
        assertEqual = self.assertEqual
        test_url = _str("__nosuch.dtd")

        class MyResolver(self.etree.Resolver):
            def resolve(self, url, id, context):
                assertEqual(url, test_url)
                return self.resolve_filename(
                    fileInTestDir('test.dtd'), context)

        parser.resolvers.add(MyResolver())

        xml = _str('<!DOCTYPE a SYSTEM "%s"><a><b/></a>') % test_url
        tree = parse(StringIO(xml), parser)
        root = tree.getroot()
        self.assertEqual(
            root.attrib,    {'default': 'valueA'})
        self.assertEqual(
            root[0].attrib, {'default': 'valueB'})