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680 lines
24 KiB
Python
680 lines
24 KiB
Python
# XXX TypeErrors on calling handlers, or on bad return values from a
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# handler, are obscure and unhelpful.
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from io import BytesIO
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import unittest
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from xml.parsers import expat
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from xml.parsers.expat import errors
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from test.support import sortdict, run_unittest
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class SetAttributeTest(unittest.TestCase):
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def setUp(self):
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self.parser = expat.ParserCreate(namespace_separator='!')
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self.set_get_pairs = [
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[0, 0],
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[1, 1],
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[2, 1],
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[0, 0],
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]
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def test_ordered_attributes(self):
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for x, y in self.set_get_pairs:
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self.parser.ordered_attributes = x
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self.assertEqual(self.parser.ordered_attributes, y)
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def test_specified_attributes(self):
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for x, y in self.set_get_pairs:
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self.parser.specified_attributes = x
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self.assertEqual(self.parser.specified_attributes, y)
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data = b'''\
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<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
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<?xml-stylesheet href="stylesheet.css"?>
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<!-- comment data -->
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<!DOCTYPE quotations SYSTEM "quotations.dtd" [
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<!ELEMENT root ANY>
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<!ATTLIST root attr1 CDATA #REQUIRED attr2 CDATA #IMPLIED>
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<!NOTATION notation SYSTEM "notation.jpeg">
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<!ENTITY acirc "â">
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<!ENTITY external_entity SYSTEM "entity.file">
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<!ENTITY unparsed_entity SYSTEM "entity.file" NDATA notation>
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%unparsed_entity;
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]>
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<root attr1="value1" attr2="value2ὀ">
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<myns:subelement xmlns:myns="http://www.python.org/namespace">
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Contents of subelements
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</myns:subelement>
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<sub2><![CDATA[contents of CDATA section]]></sub2>
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&external_entity;
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&skipped_entity;
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</root>
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'''
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# Produce UTF-8 output
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class ParseTest(unittest.TestCase):
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class Outputter:
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def __init__(self):
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self.out = []
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def StartElementHandler(self, name, attrs):
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self.out.append('Start element: ' + repr(name) + ' ' +
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sortdict(attrs))
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def EndElementHandler(self, name):
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self.out.append('End element: ' + repr(name))
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def CharacterDataHandler(self, data):
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data = data.strip()
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if data:
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self.out.append('Character data: ' + repr(data))
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def ProcessingInstructionHandler(self, target, data):
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self.out.append('PI: ' + repr(target) + ' ' + repr(data))
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def StartNamespaceDeclHandler(self, prefix, uri):
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self.out.append('NS decl: ' + repr(prefix) + ' ' + repr(uri))
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def EndNamespaceDeclHandler(self, prefix):
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self.out.append('End of NS decl: ' + repr(prefix))
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def StartCdataSectionHandler(self):
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self.out.append('Start of CDATA section')
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def EndCdataSectionHandler(self):
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self.out.append('End of CDATA section')
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def CommentHandler(self, text):
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self.out.append('Comment: ' + repr(text))
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def NotationDeclHandler(self, *args):
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name, base, sysid, pubid = args
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self.out.append('Notation declared: %s' %(args,))
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def UnparsedEntityDeclHandler(self, *args):
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entityName, base, systemId, publicId, notationName = args
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self.out.append('Unparsed entity decl: %s' %(args,))
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def NotStandaloneHandler(self):
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self.out.append('Not standalone')
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return 1
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def ExternalEntityRefHandler(self, *args):
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context, base, sysId, pubId = args
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self.out.append('External entity ref: %s' %(args[1:],))
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return 1
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def StartDoctypeDeclHandler(self, *args):
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self.out.append(('Start doctype', args))
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return 1
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def EndDoctypeDeclHandler(self):
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self.out.append("End doctype")
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return 1
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def EntityDeclHandler(self, *args):
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self.out.append(('Entity declaration', args))
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return 1
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def XmlDeclHandler(self, *args):
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self.out.append(('XML declaration', args))
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return 1
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def ElementDeclHandler(self, *args):
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self.out.append(('Element declaration', args))
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return 1
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def AttlistDeclHandler(self, *args):
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self.out.append(('Attribute list declaration', args))
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return 1
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def SkippedEntityHandler(self, *args):
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self.out.append(("Skipped entity", args))
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return 1
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def DefaultHandler(self, userData):
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pass
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def DefaultHandlerExpand(self, userData):
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pass
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handler_names = [
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'StartElementHandler', 'EndElementHandler', 'CharacterDataHandler',
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'ProcessingInstructionHandler', 'UnparsedEntityDeclHandler',
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'NotationDeclHandler', 'StartNamespaceDeclHandler',
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'EndNamespaceDeclHandler', 'CommentHandler',
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'StartCdataSectionHandler', 'EndCdataSectionHandler', 'DefaultHandler',
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'DefaultHandlerExpand', 'NotStandaloneHandler',
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'ExternalEntityRefHandler', 'StartDoctypeDeclHandler',
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'EndDoctypeDeclHandler', 'EntityDeclHandler', 'XmlDeclHandler',
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'ElementDeclHandler', 'AttlistDeclHandler', 'SkippedEntityHandler',
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]
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def _hookup_callbacks(self, parser, handler):
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"""
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Set each of the callbacks defined on handler and named in
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self.handler_names on the given parser.
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"""
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for name in self.handler_names:
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setattr(parser, name, getattr(handler, name))
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def _verify_parse_output(self, operations):
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expected_operations = [
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('XML declaration', ('1.0', 'iso-8859-1', 0)),
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'PI: \'xml-stylesheet\' \'href="stylesheet.css"\'',
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"Comment: ' comment data '",
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"Not standalone",
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("Start doctype", ('quotations', 'quotations.dtd', None, 1)),
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('Element declaration', ('root', (2, 0, None, ()))),
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('Attribute list declaration', ('root', 'attr1', 'CDATA', None,
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1)),
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('Attribute list declaration', ('root', 'attr2', 'CDATA', None,
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0)),
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"Notation declared: ('notation', None, 'notation.jpeg', None)",
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('Entity declaration', ('acirc', 0, '\xe2', None, None, None, None)),
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('Entity declaration', ('external_entity', 0, None, None,
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'entity.file', None, None)),
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"Unparsed entity decl: ('unparsed_entity', None, 'entity.file', None, 'notation')",
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"Not standalone",
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"End doctype",
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"Start element: 'root' {'attr1': 'value1', 'attr2': 'value2\u1f40'}",
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"NS decl: 'myns' 'http://www.python.org/namespace'",
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"Start element: 'http://www.python.org/namespace!subelement' {}",
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"Character data: 'Contents of subelements'",
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"End element: 'http://www.python.org/namespace!subelement'",
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"End of NS decl: 'myns'",
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"Start element: 'sub2' {}",
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'Start of CDATA section',
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"Character data: 'contents of CDATA section'",
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'End of CDATA section',
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"End element: 'sub2'",
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"External entity ref: (None, 'entity.file', None)",
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('Skipped entity', ('skipped_entity', 0)),
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"End element: 'root'",
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]
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for operation, expected_operation in zip(operations, expected_operations):
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self.assertEqual(operation, expected_operation)
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def test_unicode(self):
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# Try the parse again, this time producing Unicode output
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out = self.Outputter()
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parser = expat.ParserCreate(namespace_separator='!')
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self._hookup_callbacks(parser, out)
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parser.Parse(data, 1)
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operations = out.out
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self._verify_parse_output(operations)
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# Issue #6697.
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self.assertRaises(AttributeError, getattr, parser, '\uD800')
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def test_parse_file(self):
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# Try parsing a file
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out = self.Outputter()
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parser = expat.ParserCreate(namespace_separator='!')
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self._hookup_callbacks(parser, out)
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file = BytesIO(data)
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parser.ParseFile(file)
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operations = out.out
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self._verify_parse_output(operations)
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class NamespaceSeparatorTest(unittest.TestCase):
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def test_legal(self):
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# Tests that make sure we get errors when the namespace_separator value
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# is illegal, and that we don't for good values:
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expat.ParserCreate()
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expat.ParserCreate(namespace_separator=None)
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expat.ParserCreate(namespace_separator=' ')
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def test_illegal(self):
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try:
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expat.ParserCreate(namespace_separator=42)
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self.fail()
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except TypeError as e:
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self.assertEqual(str(e),
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'ParserCreate() argument 2 must be str or None, not int')
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try:
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expat.ParserCreate(namespace_separator='too long')
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self.fail()
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except ValueError as e:
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self.assertEqual(str(e),
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'namespace_separator must be at most one character, omitted, or None')
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def test_zero_length(self):
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# ParserCreate() needs to accept a namespace_separator of zero length
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# to satisfy the requirements of RDF applications that are required
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# to simply glue together the namespace URI and the localname. Though
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# considered a wart of the RDF specifications, it needs to be supported.
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#
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# See XML-SIG mailing list thread starting with
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# http://mail.python.org/pipermail/xml-sig/2001-April/005202.html
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#
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expat.ParserCreate(namespace_separator='') # too short
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class InterningTest(unittest.TestCase):
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def test(self):
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# Test the interning machinery.
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p = expat.ParserCreate()
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L = []
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def collector(name, *args):
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L.append(name)
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p.StartElementHandler = collector
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p.EndElementHandler = collector
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p.Parse("<e> <e/> <e></e> </e>", 1)
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tag = L[0]
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self.assertEqual(len(L), 6)
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for entry in L:
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# L should have the same string repeated over and over.
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self.assertTrue(tag is entry)
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def test_issue9402(self):
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# create an ExternalEntityParserCreate with buffer text
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class ExternalOutputter:
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def __init__(self, parser):
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self.parser = parser
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self.parser_result = None
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def ExternalEntityRefHandler(self, context, base, sysId, pubId):
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external_parser = self.parser.ExternalEntityParserCreate("")
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self.parser_result = external_parser.Parse("", 1)
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return 1
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parser = expat.ParserCreate(namespace_separator='!')
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parser.buffer_text = 1
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out = ExternalOutputter(parser)
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parser.ExternalEntityRefHandler = out.ExternalEntityRefHandler
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parser.Parse(data, 1)
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self.assertEqual(out.parser_result, 1)
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class BufferTextTest(unittest.TestCase):
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def setUp(self):
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self.stuff = []
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self.parser = expat.ParserCreate()
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self.parser.buffer_text = 1
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self.parser.CharacterDataHandler = self.CharacterDataHandler
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def check(self, expected, label):
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self.assertEqual(self.stuff, expected,
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"%s\nstuff = %r\nexpected = %r"
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% (label, self.stuff, map(str, expected)))
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def CharacterDataHandler(self, text):
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self.stuff.append(text)
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def StartElementHandler(self, name, attrs):
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self.stuff.append("<%s>" % name)
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bt = attrs.get("buffer-text")
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if bt == "yes":
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self.parser.buffer_text = 1
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elif bt == "no":
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self.parser.buffer_text = 0
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def EndElementHandler(self, name):
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self.stuff.append("</%s>" % name)
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def CommentHandler(self, data):
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self.stuff.append("<!--%s-->" % data)
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def setHandlers(self, handlers=[]):
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for name in handlers:
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setattr(self.parser, name, getattr(self, name))
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def test_default_to_disabled(self):
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parser = expat.ParserCreate()
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self.assertFalse(parser.buffer_text)
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def test_buffering_enabled(self):
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# Make sure buffering is turned on
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self.assertTrue(self.parser.buffer_text)
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self.parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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self.assertEqual(self.stuff, ['123'],
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"buffered text not properly collapsed")
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def test1(self):
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# XXX This test exposes more detail of Expat's text chunking than we
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# XXX like, but it tests what we need to concisely.
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self.setHandlers(["StartElementHandler"])
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self.parser.Parse("<a>1<b buffer-text='no'/>2\n3<c buffer-text='yes'/>4\n5</a>", 1)
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self.assertEqual(self.stuff,
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["<a>", "1", "<b>", "2", "\n", "3", "<c>", "4\n5"],
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"buffering control not reacting as expected")
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def test2(self):
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self.parser.Parse("<a>1<b/><2><c/> \n 3</a>", 1)
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self.assertEqual(self.stuff, ["1<2> \n 3"],
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"buffered text not properly collapsed")
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def test3(self):
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self.setHandlers(["StartElementHandler"])
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self.parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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self.assertEqual(self.stuff, ["<a>", "1", "<b>", "2", "<c>", "3"],
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"buffered text not properly split")
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def test4(self):
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self.setHandlers(["StartElementHandler", "EndElementHandler"])
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self.parser.CharacterDataHandler = None
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self.parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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self.assertEqual(self.stuff,
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["<a>", "<b>", "</b>", "<c>", "</c>", "</a>"])
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def test5(self):
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self.setHandlers(["StartElementHandler", "EndElementHandler"])
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self.parser.Parse("<a>1<b></b>2<c/>3</a>", 1)
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self.assertEqual(self.stuff,
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["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3", "</a>"])
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def test6(self):
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self.setHandlers(["CommentHandler", "EndElementHandler",
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"StartElementHandler"])
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self.parser.Parse("<a>1<b/>2<c></c>345</a> ", 1)
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self.assertEqual(self.stuff,
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["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "345", "</a>"],
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"buffered text not properly split")
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def test7(self):
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self.setHandlers(["CommentHandler", "EndElementHandler",
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"StartElementHandler"])
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self.parser.Parse("<a>1<b/>2<c></c>3<!--abc-->4<!--def-->5</a> ", 1)
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self.assertEqual(self.stuff,
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["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3",
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"<!--abc-->", "4", "<!--def-->", "5", "</a>"],
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"buffered text not properly split")
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# Test handling of exception from callback:
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class HandlerExceptionTest(unittest.TestCase):
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def StartElementHandler(self, name, attrs):
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raise RuntimeError(name)
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def test(self):
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parser = expat.ParserCreate()
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parser.StartElementHandler = self.StartElementHandler
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try:
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parser.Parse("<a><b><c/></b></a>", 1)
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self.fail()
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except RuntimeError as e:
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self.assertEqual(e.args[0], 'a',
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"Expected RuntimeError for element 'a', but" + \
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" found %r" % e.args[0])
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# Test Current* members:
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class PositionTest(unittest.TestCase):
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def StartElementHandler(self, name, attrs):
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self.check_pos('s')
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def EndElementHandler(self, name):
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self.check_pos('e')
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def check_pos(self, event):
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pos = (event,
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self.parser.CurrentByteIndex,
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self.parser.CurrentLineNumber,
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self.parser.CurrentColumnNumber)
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self.assertTrue(self.upto < len(self.expected_list),
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'too many parser events')
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expected = self.expected_list[self.upto]
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self.assertEqual(pos, expected,
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'Expected position %s, got position %s' %(pos, expected))
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self.upto += 1
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def test(self):
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self.parser = expat.ParserCreate()
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self.parser.StartElementHandler = self.StartElementHandler
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self.parser.EndElementHandler = self.EndElementHandler
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self.upto = 0
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self.expected_list = [('s', 0, 1, 0), ('s', 5, 2, 1), ('s', 11, 3, 2),
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('e', 15, 3, 6), ('e', 17, 4, 1), ('e', 22, 5, 0)]
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xml = '<a>\n <b>\n <c/>\n </b>\n</a>'
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self.parser.Parse(xml, 1)
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class sf1296433Test(unittest.TestCase):
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def test_parse_only_xml_data(self):
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# http://python.org/sf/1296433
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#
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xml = "<?xml version='1.0' encoding='iso8859'?><s>%s</s>" % ('a' * 1025)
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# this one doesn't crash
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#xml = "<?xml version='1.0'?><s>%s</s>" % ('a' * 10000)
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class SpecificException(Exception):
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pass
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def handler(text):
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raise SpecificException
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parser = expat.ParserCreate()
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parser.CharacterDataHandler = handler
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self.assertRaises(Exception, parser.Parse, xml)
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class ChardataBufferTest(unittest.TestCase):
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"""
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test setting of chardata buffer size
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"""
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def test_1025_bytes(self):
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self.assertEqual(self.small_buffer_test(1025), 2)
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def test_1000_bytes(self):
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self.assertEqual(self.small_buffer_test(1000), 1)
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def test_wrong_size(self):
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parser = expat.ParserCreate()
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parser.buffer_text = 1
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def f(size):
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parser.buffer_size = size
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self.assertRaises(ValueError, f, -1)
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self.assertRaises(ValueError, f, 0)
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def test_unchanged_size(self):
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xml1 = ("<?xml version='1.0' encoding='iso8859'?><s>%s" % ('a' * 512))
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xml2 = 'a'*512 + '</s>'
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parser = expat.ParserCreate()
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parser.CharacterDataHandler = self.counting_handler
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parser.buffer_size = 512
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parser.buffer_text = 1
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# Feed 512 bytes of character data: the handler should be called
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# once.
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self.n = 0
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parser.Parse(xml1)
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self.assertEqual(self.n, 1)
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# Reassign to buffer_size, but assign the same size.
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parser.buffer_size = parser.buffer_size
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self.assertEqual(self.n, 1)
|
|
|
|
# Try parsing rest of the document
|
|
parser.Parse(xml2)
|
|
self.assertEqual(self.n, 2)
|
|
|
|
|
|
def test_disabling_buffer(self):
|
|
xml1 = "<?xml version='1.0' encoding='iso8859'?><a>%s" % ('a' * 512)
|
|
xml2 = ('b' * 1024)
|
|
xml3 = "%s</a>" % ('c' * 1024)
|
|
parser = expat.ParserCreate()
|
|
parser.CharacterDataHandler = self.counting_handler
|
|
parser.buffer_text = 1
|
|
parser.buffer_size = 1024
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
|
|
# Parse one chunk of XML
|
|
self.n = 0
|
|
parser.Parse(xml1, 0)
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
self.assertEqual(self.n, 1)
|
|
|
|
# Turn off buffering and parse the next chunk.
|
|
parser.buffer_text = 0
|
|
self.assertFalse(parser.buffer_text)
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
for i in range(10):
|
|
parser.Parse(xml2, 0)
|
|
self.assertEqual(self.n, 11)
|
|
|
|
parser.buffer_text = 1
|
|
self.assertTrue(parser.buffer_text)
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
parser.Parse(xml3, 1)
|
|
self.assertEqual(self.n, 12)
|
|
|
|
|
|
|
|
def make_document(self, bytes):
|
|
return ("<?xml version='1.0'?><tag>" + bytes * 'a' + '</tag>')
|
|
|
|
def counting_handler(self, text):
|
|
self.n += 1
|
|
|
|
def small_buffer_test(self, buffer_len):
|
|
xml = "<?xml version='1.0' encoding='iso8859'?><s>%s</s>" % ('a' * buffer_len)
|
|
parser = expat.ParserCreate()
|
|
parser.CharacterDataHandler = self.counting_handler
|
|
parser.buffer_size = 1024
|
|
parser.buffer_text = 1
|
|
|
|
self.n = 0
|
|
parser.Parse(xml)
|
|
return self.n
|
|
|
|
def test_change_size_1(self):
|
|
xml1 = "<?xml version='1.0' encoding='iso8859'?><a><s>%s" % ('a' * 1024)
|
|
xml2 = "aaa</s><s>%s</s></a>" % ('a' * 1025)
|
|
parser = expat.ParserCreate()
|
|
parser.CharacterDataHandler = self.counting_handler
|
|
parser.buffer_text = 1
|
|
parser.buffer_size = 1024
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
|
|
self.n = 0
|
|
parser.Parse(xml1, 0)
|
|
parser.buffer_size *= 2
|
|
self.assertEqual(parser.buffer_size, 2048)
|
|
parser.Parse(xml2, 1)
|
|
self.assertEqual(self.n, 2)
|
|
|
|
def test_change_size_2(self):
|
|
xml1 = "<?xml version='1.0' encoding='iso8859'?><a>a<s>%s" % ('a' * 1023)
|
|
xml2 = "aaa</s><s>%s</s></a>" % ('a' * 1025)
|
|
parser = expat.ParserCreate()
|
|
parser.CharacterDataHandler = self.counting_handler
|
|
parser.buffer_text = 1
|
|
parser.buffer_size = 2048
|
|
self.assertEqual(parser.buffer_size, 2048)
|
|
|
|
self.n=0
|
|
parser.Parse(xml1, 0)
|
|
parser.buffer_size = parser.buffer_size // 2
|
|
self.assertEqual(parser.buffer_size, 1024)
|
|
parser.Parse(xml2, 1)
|
|
self.assertEqual(self.n, 4)
|
|
|
|
class MalformedInputTest(unittest.TestCase):
|
|
def test1(self):
|
|
xml = "\0\r\n"
|
|
parser = expat.ParserCreate()
|
|
try:
|
|
parser.Parse(xml, True)
|
|
self.fail()
|
|
except expat.ExpatError as e:
|
|
self.assertEqual(str(e), 'unclosed token: line 2, column 0')
|
|
|
|
def test2(self):
|
|
xml = "<?xml version\xc2\x85='1.0'?>\r\n"
|
|
parser = expat.ParserCreate()
|
|
try:
|
|
parser.Parse(xml, True)
|
|
self.fail()
|
|
except expat.ExpatError as e:
|
|
self.assertEqual(str(e), 'XML declaration not well-formed: line 1, column 14')
|
|
|
|
class ErrorMessageTest(unittest.TestCase):
|
|
def test_codes(self):
|
|
# verify mapping of errors.codes and errors.messages
|
|
self.assertEqual(errors.XML_ERROR_SYNTAX,
|
|
errors.messages[errors.codes[errors.XML_ERROR_SYNTAX]])
|
|
|
|
def test_expaterror(self):
|
|
xml = '<'
|
|
parser = expat.ParserCreate()
|
|
try:
|
|
parser.Parse(xml, True)
|
|
self.fail()
|
|
except expat.ExpatError as e:
|
|
self.assertEqual(e.code,
|
|
errors.codes[errors.XML_ERROR_UNCLOSED_TOKEN])
|
|
|
|
|
|
class ForeignDTDTests(unittest.TestCase):
|
|
"""
|
|
Tests for the UseForeignDTD method of expat parser objects.
|
|
"""
|
|
def test_use_foreign_dtd(self):
|
|
"""
|
|
If UseForeignDTD is passed True and a document without an external
|
|
entity reference is parsed, ExternalEntityRefHandler is first called
|
|
with None for the public and system ids.
|
|
"""
|
|
handler_call_args = []
|
|
def resolve_entity(context, base, system_id, public_id):
|
|
handler_call_args.append((public_id, system_id))
|
|
return 1
|
|
|
|
parser = expat.ParserCreate()
|
|
parser.UseForeignDTD(True)
|
|
parser.SetParamEntityParsing(expat.XML_PARAM_ENTITY_PARSING_ALWAYS)
|
|
parser.ExternalEntityRefHandler = resolve_entity
|
|
parser.Parse("<?xml version='1.0'?><element/>")
|
|
self.assertEqual(handler_call_args, [(None, None)])
|
|
|
|
def test_ignore_use_foreign_dtd(self):
|
|
"""
|
|
If UseForeignDTD is passed True and a document with an external
|
|
entity reference is parsed, ExternalEntityRefHandler is called with
|
|
the public and system ids from the document.
|
|
"""
|
|
handler_call_args = []
|
|
def resolve_entity(context, base, system_id, public_id):
|
|
handler_call_args.append((public_id, system_id))
|
|
return 1
|
|
|
|
parser = expat.ParserCreate()
|
|
parser.UseForeignDTD(True)
|
|
parser.SetParamEntityParsing(expat.XML_PARAM_ENTITY_PARSING_ALWAYS)
|
|
parser.ExternalEntityRefHandler = resolve_entity
|
|
parser.Parse(
|
|
"<?xml version='1.0'?><!DOCTYPE foo PUBLIC 'bar' 'baz'><element/>")
|
|
self.assertEqual(handler_call_args, [("bar", "baz")])
|
|
|
|
|
|
def test_main():
|
|
run_unittest(SetAttributeTest,
|
|
ParseTest,
|
|
NamespaceSeparatorTest,
|
|
InterningTest,
|
|
BufferTextTest,
|
|
HandlerExceptionTest,
|
|
PositionTest,
|
|
sf1296433Test,
|
|
ChardataBufferTest,
|
|
MalformedInputTest,
|
|
ErrorMessageTest,
|
|
ForeignDTDTests)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|