summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_xml_etree_c.py
blob: bcaa724344b983fe2e5efdca1a252ce4141b656f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
# 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()