mirror of https://github.com/python/cpython
97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
# xml.etree test for cElementTree
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import sys, struct
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from test import support
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from test.support import import_fresh_module
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import types
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import unittest
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cET = import_fresh_module('xml.etree.ElementTree',
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fresh=['_elementtree'])
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cET_alias = import_fresh_module('xml.etree.cElementTree',
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fresh=['_elementtree', 'xml.etree'])
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class MiscTests(unittest.TestCase):
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# Issue #8651.
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@support.bigmemtest(size=support._2G + 100, memuse=1)
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def test_length_overflow(self, size):
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if size < support._2G + 100:
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self.skipTest("not enough free memory, need at least 2 GB")
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data = b'x' * size
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parser = cET.XMLParser()
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try:
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self.assertRaises(OverflowError, parser.feed, data)
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finally:
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data = None
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@unittest.skipUnless(cET, 'requires _elementtree')
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class TestAliasWorking(unittest.TestCase):
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# Test that the cET alias module is alive
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def test_alias_working(self):
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e = cET_alias.Element('foo')
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self.assertEqual(e.tag, 'foo')
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@unittest.skipUnless(cET, 'requires _elementtree')
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@support.cpython_only
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class TestAcceleratorImported(unittest.TestCase):
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# Test that the C accelerator was imported, as expected
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def test_correct_import_cET(self):
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# SubElement is a function so it retains _elementtree as its module.
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self.assertEqual(cET.SubElement.__module__, '_elementtree')
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def test_correct_import_cET_alias(self):
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self.assertEqual(cET_alias.SubElement.__module__, '_elementtree')
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def test_parser_comes_from_C(self):
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# The type of methods defined in Python code is types.FunctionType,
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# while the type of methods defined inside _elementtree is
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# <class 'wrapper_descriptor'>
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self.assertNotIsInstance(cET.Element.__init__, types.FunctionType)
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@unittest.skipUnless(cET, 'requires _elementtree')
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@support.cpython_only
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class SizeofTest(unittest.TestCase):
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def setUp(self):
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self.elementsize = support.calcobjsize('5P')
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# extra
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self.extra = struct.calcsize('PiiP4P')
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check_sizeof = support.check_sizeof
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def test_element(self):
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e = cET.Element('a')
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self.check_sizeof(e, self.elementsize)
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def test_element_with_attrib(self):
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e = cET.Element('a', href='about:')
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self.check_sizeof(e, self.elementsize + self.extra)
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def test_element_with_children(self):
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e = cET.Element('a')
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for i in range(5):
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cET.SubElement(e, 'span')
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# should have space for 8 children now
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self.check_sizeof(e, self.elementsize + self.extra +
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struct.calcsize('8P'))
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def test_main():
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from test import test_xml_etree, test_xml_etree_c
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# Run the tests specific to the C implementation
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support.run_unittest(
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MiscTests,
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TestAliasWorking,
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TestAcceleratorImported,
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SizeofTest,
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)
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# Run the same test suite as the Python module
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test_xml_etree.test_main(module=cET)
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if __name__ == '__main__':
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test_main()
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