Adding assertItemsEqual with tests. Issue 7832. assertSameElements still needs to be deprecated plus documentation needs to be updated.
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@ -2775,6 +2775,47 @@ class Test_TestCase(TestCase, TestEquality, TestHashing):
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self.assertRaises(self.failureException, self.assertSameElements,
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[{'a': 1}, {'b': 2}], [{'b': 2}, {'a': 2}])
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def testAssertItemsEqual(self):
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a = object()
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self.assertItemsEqual([1, 2, 3], [3, 2, 1])
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self.assertItemsEqual(['foo', 'bar', 'baz'], ['bar', 'baz', 'foo'])
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self.assertItemsEqual([a, a, 2, 2, 3], (a, 2, 3, a, 2))
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self.assertItemsEqual([1, "2", "a", "a"], ["a", "2", True, "a"])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[1, 2] + [3] * 100, [1] * 100 + [2, 3])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[1, "2", "a", "a"], ["a", "2", True, 1])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[10], [10, 11])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[10, 11], [10])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[10, 11, 10], [10, 11])
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# Test that sequences of unhashable objects can be tested for sameness:
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self.assertItemsEqual([[1, 2], [3, 4], 0], [False, [3, 4], [1, 2]])
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# hashable types, but not orderable
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[], [divmod, 'x', 1, 5j, 2j, frozenset()])
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# comparing dicts raises a py3k warning
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self.assertItemsEqual([{'a': 1}, {'b': 2}], [{'b': 2}, {'a': 1}])
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# comparing heterogenous non-hashable sequences raises a py3k warning
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self.assertItemsEqual([1, 'x', divmod, []], [divmod, [], 'x', 1])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[], [divmod, [], 'x', 1, 5j, 2j, set()])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[[1]], [[2]])
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# Same elements, but not same sequence length
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[1, 1, 2], [2, 1])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[1, 1, "2", "a", "a"], ["2", "2", True, "a"])
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self.assertRaises(self.failureException, self.assertItemsEqual,
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[1, {'b': 2}, None, True], [{'b': 2}, True, None])
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def testAssertSetEqual(self):
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set1 = set()
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set2 = set()
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@ -3338,8 +3379,8 @@ class TestLongMessage(TestCase):
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"^Missing: 'key'$",
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"^Missing: 'key' : oops$"])
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def testAssertSameElements(self):
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self.assertMessages('assertSameElements', ([], [None]),
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def testAssertItemsEqual(self):
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self.assertMessages('assertItemsEqual', ([], [None]),
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[r"\[None\]$", "^oops$",
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r"\[None\]$",
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r"\[None\] : oops$"])
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@ -838,6 +838,44 @@ class TestCase(object):
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standardMsg = '\n'.join(errors)
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self.fail(self._formatMessage(msg, standardMsg))
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def assertItemsEqual(self, expected_seq, actual_seq, msg=None):
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"""An unordered sequence / set specific comparison. It asserts that
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expected_seq and actual_seq contain the same elements. It is
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the equivalent of::
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self.assertEqual(sorted(expected_seq), sorted(actual_seq))
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Raises with an error message listing which elements of expected_seq
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are missing from actual_seq and vice versa if any.
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Asserts that each element has the same count in both sequences.
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Example:
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- [0, 1, 1] and [1, 0, 1] compare equal.
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- [0, 0, 1] and [0, 1] compare unequal.
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"""
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try:
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expected = sorted(expected_seq)
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actual = sorted(actual_seq)
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except TypeError:
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# Unsortable items (example: set(), complex(), ...)
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expected = list(expected_seq)
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actual = list(actual_seq)
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missing, unexpected = unorderable_list_difference(expected, actual)
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else:
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return self.assertSequenceEqual(expected, actual, msg=msg)
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errors = []
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if missing:
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errors.append('Expected, but missing:\n %s' %
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safe_repr(missing))
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if unexpected:
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errors.append('Unexpected, but present:\n %s' %
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safe_repr(unexpected))
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if errors:
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standardMsg = '\n'.join(errors)
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self.fail(self._formatMessage(msg, standardMsg))
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def assertMultiLineEqual(self, first, second, msg=None):
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"""Assert that two multi-line strings are equal."""
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self.assert_(isinstance(first, str), (
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