94 lines
2.9 KiB
Python
94 lines
2.9 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 unittest
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cET = import_fresh_module('xml.etree.ElementTree', fresh=['_elementtree'])
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cET_alias = import_fresh_module('xml.etree.cElementTree', 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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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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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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@unittest.skipUnless(cET, 'requires _elementtree')
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class SizeofTest(unittest.TestCase):
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def setUp(self):
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import _testcapi
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gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
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# object header
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header = 'PP'
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if hasattr(sys, "gettotalrefcount"):
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# debug header
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header = 'PP' + header
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# fields
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element = header + '5P'
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self.elementsize = gc_headsize + struct.calcsize(element)
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# extra
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self.extra = struct.calcsize('PiiP4P')
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def test_element(self):
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e = cET.Element('a')
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self.assertEqual(sys.getsizeof(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.assertEqual(sys.getsizeof(e),
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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.assertEqual(sys.getsizeof(e),
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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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