Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 1 | import sys |
Neal Norwitz | 349c0ed | 2006-04-09 04:50:18 +0000 | [diff] [blame^] | 2 | import unittest |
| 3 | from test import test_support |
Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 4 | |
Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 5 | class Empty: |
| 6 | def __repr__(self): |
| 7 | return '<Empty>' |
| 8 | |
| 9 | class Coerce: |
| 10 | def __init__(self, arg): |
| 11 | self.arg = arg |
| 12 | |
| 13 | def __repr__(self): |
| 14 | return '<Coerce %s>' % self.arg |
| 15 | |
| 16 | def __coerce__(self, other): |
| 17 | if isinstance(other, Coerce): |
| 18 | return self.arg, other.arg |
| 19 | else: |
Neil Schemenauer | e7e694f | 2001-01-03 02:13:26 +0000 | [diff] [blame] | 20 | return self.arg, other |
Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 21 | |
| 22 | class Cmp: |
| 23 | def __init__(self,arg): |
| 24 | self.arg = arg |
| 25 | |
| 26 | def __repr__(self): |
| 27 | return '<Cmp %s>' % self.arg |
| 28 | |
| 29 | def __cmp__(self, other): |
| 30 | return cmp(self.arg, other) |
| 31 | |
Neal Norwitz | 349c0ed | 2006-04-09 04:50:18 +0000 | [diff] [blame^] | 32 | class ComparisonTest(unittest.TestCase): |
| 33 | set1 = [2, 2.0, 2L, 2+0j, Coerce(2), Cmp(2.0)] |
| 34 | set2 = [[1], (3,), None, Empty()] |
| 35 | candidates = set1 + set2 |
Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 36 | |
Neal Norwitz | 349c0ed | 2006-04-09 04:50:18 +0000 | [diff] [blame^] | 37 | def test_comparisons(self): |
| 38 | for a in self.candidates: |
| 39 | for b in self.candidates: |
| 40 | if ((a in self.set1) and (b in self.set1)) or a is b: |
| 41 | self.assertEqual(a, b) |
Neil Schemenauer | e7e694f | 2001-01-03 02:13:26 +0000 | [diff] [blame] | 42 | else: |
Neal Norwitz | 349c0ed | 2006-04-09 04:50:18 +0000 | [diff] [blame^] | 43 | self.assertNotEqual(a, b) |
Neil Schemenauer | fd288c7 | 2001-01-02 16:30:31 +0000 | [diff] [blame] | 44 | |
Neal Norwitz | 349c0ed | 2006-04-09 04:50:18 +0000 | [diff] [blame^] | 45 | def test_id_comparisons(self): |
| 46 | # Ensure default comparison compares id() of args |
| 47 | L = [] |
| 48 | for i in range(10): |
| 49 | L.insert(len(L)//2, Empty()) |
| 50 | for a in L: |
| 51 | for b in L: |
| 52 | self.assertEqual(cmp(a, b), cmp(id(a), id(b)), |
| 53 | 'a=%r, b=%r' % (a, b)) |
| 54 | |
| 55 | def test_main(): |
| 56 | test_support.run_unittest(ComparisonTest) |
| 57 | |
| 58 | if __name__ == '__main__': |
| 59 | test_main() |