lxml.tests.test_errors

Package lxml :: Package tests :: Module test_errors |
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# Source Code for Module lxml.tests.test_errors

    ﻿# -*- coding: utf-8 -*-
    import unittest, doctest

    # These tests check that error handling in the Pyrex code is
    # complete.
    # It is likely that if there are errors, instead of failing the code
    # will simply crash.

    import sys, gc, os.path
    from lxml import etree

    this_dir = os.path.dirname(__file__)
    if this_dir not in sys.path:
        sys.path.insert(0, this_dir) # needed for Py3

    from common_imports import HelperTestCase

    class ErrorTestCase(HelperTestCase):
        etree = etree

        def test_bad_element(self):
            # attrib argument of Element() should be a dictionary, so if
            # we pass a string we should get an error.
            self.assertRaises(TypeError, self.etree.Element, 'a', 'b')

        def test_empty_parse(self):
            self.assertRaises(etree.XMLSyntaxError, etree.fromstring, '')

        def test_element_cyclic_gc_none(self):
            # test if cyclic reference can crash etree
            Element = self.etree.Element
            gc.collect()

            count = sys.getrefcount(None)

            l = [Element('name'), Element('name')]
            l.append(l)

            del l
            gc.collect()

            self.assertEquals(sys.getrefcount(None), count)

    def test_suite():
        suite = unittest.TestSuite()
        suite.addTests([unittest.makeSuite(ErrorTestCase)])
        return suite

    if __name__ == '__main__':
        print('to test use test.py %s' % __file__)