bpo-46811: Make test suite support Expat >=2.4.5 (GH-31453)

Curly brackets were never allowed in namespace URIs
according to RFC 3986, and so-called namespace-validating
XML parsers have the right to reject them a invalid URIs.

libexpat >=2.4.5 has become strcter in that regard due to
related security issues; with ET.XML instantiating a
namespace-aware parser under the hood, this test has no
future in CPython.

References:
- https://datatracker.ietf.org/doc/html/rfc3968
- https://www.w3.org/TR/xml-names/

Also, test_minidom.py: Support Expat >=2.4.5
This commit is contained in:
Sebastian Pipping 2022-02-21 15:48:32 +01:00 committed by GitHub
parent 2b86616456
commit 2cae93832f
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3 changed files with 16 additions and 8 deletions

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@ -6,10 +6,12 @@ import io
from test import support
import unittest
import pyexpat
import xml.dom.minidom
from xml.dom.minidom import parse, Node, Document, parseString
from xml.dom.minidom import getDOMImplementation
from xml.parsers.expat import ExpatError
tstfile = support.findfile("test.xml", subdir="xmltestdata")
@ -1147,7 +1149,13 @@ class MinidomTest(unittest.TestCase):
# Verify that character decoding errors raise exceptions instead
# of crashing
self.assertRaises(UnicodeDecodeError, parseString,
if pyexpat.version_info >= (2, 4, 5):
self.assertRaises(ExpatError, parseString,
b'<fran\xe7ais></fran\xe7ais>')
self.assertRaises(ExpatError, parseString,
b'<franais>Comment \xe7a va ? Tr\xe8s bien ?</franais>')
else:
self.assertRaises(UnicodeDecodeError, parseString,
b'<fran\xe7ais>Comment \xe7a va ? Tr\xe8s bien ?</fran\xe7ais>')
doc.unlink()
@ -1609,7 +1617,12 @@ class MinidomTest(unittest.TestCase):
self.confirm(doc2.namespaceURI == xml.dom.EMPTY_NAMESPACE)
def testExceptionOnSpacesInXMLNSValue(self):
with self.assertRaisesRegex(ValueError, 'Unsupported syntax'):
if pyexpat.version_info >= (2, 4, 5):
context = self.assertRaisesRegex(ExpatError, 'syntax error')
else:
context = self.assertRaisesRegex(ValueError, 'Unsupported syntax')
with context:
parseString('<element xmlns:abc="http:abc.com/de f g/hi/j k"><abc:foo /></element>')
def testDocRemoveChild(self):

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@ -2192,12 +2192,6 @@ class BugsTest(unittest.TestCase):
b"<?xml version='1.0' encoding='ascii'?>\n"
b'<body>t&#227;g</body>')
def test_issue3151(self):
e = ET.XML('<prefix:localname xmlns:prefix="${stuff}"/>')
self.assertEqual(e.tag, '{${stuff}}localname')
t = ET.ElementTree(e)
self.assertEqual(ET.tostring(e), b'<ns0:localname xmlns:ns0="${stuff}" />')
def test_issue6565(self):
elem = ET.XML("<body><tag/></body>")
self.assertEqual(summarize_list(elem), ['tag'])

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@ -0,0 +1 @@
Make test suite support Expat >=2.4.5