60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
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import sys
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import unittest
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from test import test_support
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class Empty:
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def __repr__(self):
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return '<Empty>'
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class Coerce:
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def __init__(self, arg):
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self.arg = arg
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def __repr__(self):
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return '<Coerce %s>' % self.arg
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def __coerce__(self, other):
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if isinstance(other, Coerce):
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return self.arg, other.arg
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else:
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return self.arg, other
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class Cmp:
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def __init__(self,arg):
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self.arg = arg
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def __repr__(self):
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return '<Cmp %s>' % self.arg
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def __cmp__(self, other):
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return cmp(self.arg, other)
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class ComparisonTest(unittest.TestCase):
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set1 = [2, 2.0, 2L, 2+0j, Coerce(2), Cmp(2.0)]
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set2 = [[1], (3,), None, Empty()]
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candidates = set1 + set2
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def test_comparisons(self):
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for a in self.candidates:
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for b in self.candidates:
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if ((a in self.set1) and (b in self.set1)) or a is b:
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self.assertEqual(a, b)
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else:
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self.assertNotEqual(a, b)
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def test_id_comparisons(self):
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# Ensure default comparison compares id() of args
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L = []
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for i in range(10):
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L.insert(len(L)//2, Empty())
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for a in L:
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for b in L:
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self.assertEqual(cmp(a, b), cmp(id(a), id(b)),
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'a=%r, b=%r' % (a, b))
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def test_main():
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test_support.run_unittest(ComparisonTest)
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if __name__ == '__main__':
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test_main()
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