93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
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"Tests for cmp() compatibility with CPython"
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import UserDict
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import unittest
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from test import test_support
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class CmpGeneralTestCase(unittest.TestCase):
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def test_type_crash(self):
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# Used to throw ArrayStoreException:
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# http://bugs.jython.org/issue1382
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class Configuration(object, UserDict.DictMixin):
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pass
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self.assertNotEqual(Configuration(), None)
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class UnicodeDerivedCmp(unittest.TestCase):
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"Test for http://bugs.jython.org/issue1889394"
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def testCompareWithString(self):
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class Test(unicode):
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pass
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test = Test('{1:1}')
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self.assertNotEqual(test, {1:1})
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def testCompareEmptyDerived(self):
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class A(unicode): pass
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class B(unicode): pass
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self.assertEqual(A(), B())
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class LongDerivedCmp(unittest.TestCase):
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def testCompareWithString(self):
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class Test(long):
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pass
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self.assertNotEqual(Test(0), 'foo')
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self.assertTrue('foo' in [Test(12), 'foo'])
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class IntStrCmp(unittest.TestCase):
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def testIntStrCompares(self):
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assert not (-1 > 'a')
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assert (-1 < 'a')
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assert not (4 > 'a')
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assert (4 < 'a')
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assert not (-2 > 'a')
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assert (-2 < 'a')
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assert not (-1 == 'a')
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class CustomCmp(unittest.TestCase):
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def test___cmp___returns(self):
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class Foo(object):
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def __int__(self):
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return 0
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class Bar(object):
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def __int__(self):
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raise ValueError('doh')
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class Baz(object):
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def __cmp__(self, other):
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return self.cmp(other)
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baz = Baz()
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baz.cmp = lambda other : Foo()
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self.assertEqual(cmp(100, baz), 0)
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baz.cmp = lambda other : NotImplemented
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self.assertEqual(cmp(100, baz), 1)
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baz.cmp = lambda other: Bar()
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self.assertRaises(ValueError, cmp, 100, baz)
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baz.cmp = lambda other: 1 / 0
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self.assertRaises(ZeroDivisionError, cmp, 100, baz)
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del Baz.__cmp__
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# CPython handles numbers differently than other types in
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# object.c:default_3way_compare, and gets 1 here. we don't care
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self.assert_(cmp(100, baz) in (-1, 1))
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def test_cmp_stops_short(self):
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class Foo(object):
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__eq__ = lambda self, other: False
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class Bar(object):
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__eq__ = lambda self, other: True
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self.assertEqual(cmp(Foo(), Bar()), 1)
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def test_main():
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test_support.run_unittest(
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CmpGeneralTestCase,
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UnicodeDerivedCmp,
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LongDerivedCmp,
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IntStrCmp,
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CustomCmp
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)
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if __name__ == '__main__':
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test_main()
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