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