projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | # tests for slice objects; in particular the indices method. |
| 2 | ||
| 3 | import unittest | |
| 4 | from test import test_support | |
| 5 | ||
| 6 | import sys | |
| 7 | ||
| 8 | class SliceTest(unittest.TestCase): | |
| 9 | ||
| 10 | def test_constructor(self): | |
| 11 | self.assertRaises(TypeError, slice) | |
| 12 | self.assertRaises(TypeError, slice, 1, 2, 3, 4) | |
| 13 | ||
| 14 | def test_repr(self): | |
| 15 | self.assertEqual(repr(slice(1, 2, 3)), "slice(1, 2, 3)") | |
| 16 | ||
| 17 | def test_hash(self): | |
| 18 | # Verify clearing of SF bug #800796 | |
| 19 | self.assertRaises(TypeError, hash, slice(5)) | |
| 20 | self.assertRaises(TypeError, slice(5).__hash__) | |
| 21 | ||
| 22 | def test_cmp(self): | |
| 23 | s1 = slice(1, 2, 3) | |
| 24 | s2 = slice(1, 2, 3) | |
| 25 | s3 = slice(1, 2, 4) | |
| 26 | self.assertEqual(s1, s2) | |
| 27 | self.assertNotEqual(s1, s3) | |
| 28 | ||
| 29 | class Exc(Exception): | |
| 30 | pass | |
| 31 | ||
| 32 | class BadCmp(object): | |
| 33 | def __eq__(self, other): | |
| 34 | raise Exc | |
| 35 | ||
| 36 | s1 = slice(BadCmp()) | |
| 37 | s2 = slice(BadCmp()) | |
| 38 | self.assertRaises(Exc, cmp, s1, s2) | |
| 39 | self.assertEqual(s1, s1) | |
| 40 | ||
| 41 | s1 = slice(1, BadCmp()) | |
| 42 | s2 = slice(1, BadCmp()) | |
| 43 | self.assertEqual(s1, s1) | |
| 44 | self.assertRaises(Exc, cmp, s1, s2) | |
| 45 | ||
| 46 | s1 = slice(1, 2, BadCmp()) | |
| 47 | s2 = slice(1, 2, BadCmp()) | |
| 48 | self.assertEqual(s1, s1) | |
| 49 | self.assertRaises(Exc, cmp, s1, s2) | |
| 50 | ||
| 51 | def test_members(self): | |
| 52 | s = slice(1) | |
| 53 | self.assertEqual(s.start, None) | |
| 54 | self.assertEqual(s.stop, 1) | |
| 55 | self.assertEqual(s.step, None) | |
| 56 | ||
| 57 | s = slice(1, 2) | |
| 58 | self.assertEqual(s.start, 1) | |
| 59 | self.assertEqual(s.stop, 2) | |
| 60 | self.assertEqual(s.step, None) | |
| 61 | ||
| 62 | s = slice(1, 2, 3) | |
| 63 | self.assertEqual(s.start, 1) | |
| 64 | self.assertEqual(s.stop, 2) | |
| 65 | self.assertEqual(s.step, 3) | |
| 66 | ||
| 67 | class AnyClass: | |
| 68 | pass | |
| 69 | ||
| 70 | obj = AnyClass() | |
| 71 | s = slice(obj) | |
| 72 | self.assert_(s.stop is obj) | |
| 73 | ||
| 74 | def test_indices(self): | |
| 75 | self.assertEqual(slice(None ).indices(10), (0, 10, 1)) | |
| 76 | self.assertEqual(slice(None, None, 2).indices(10), (0, 10, 2)) | |
| 77 | self.assertEqual(slice(1, None, 2).indices(10), (1, 10, 2)) | |
| 78 | self.assertEqual(slice(None, None, -1).indices(10), (9, -1, -1)) | |
| 79 | self.assertEqual(slice(None, None, -2).indices(10), (9, -1, -2)) | |
| 80 | self.assertEqual(slice(3, None, -2).indices(10), (3, -1, -2)) | |
| 81 | self.assertEqual( | |
| 82 | slice(-100, 100 ).indices(10), | |
| 83 | slice(None).indices(10) | |
| 84 | ) | |
| 85 | self.assertEqual( | |
| 86 | slice(100, -100, -1).indices(10), | |
| 87 | slice(None, None, -1).indices(10) | |
| 88 | ) | |
| 89 | self.assertEqual(slice(-100L, 100L, 2L).indices(10), (0, 10, 2)) | |
| 90 | ||
| 91 | self.assertEqual(range(10)[::sys.maxint - 1], [0]) | |
| 92 | ||
| 93 | self.assertRaises(OverflowError, slice(None).indices, 1L<<100) | |
| 94 | ||
| 95 | def test_main(): | |
| 96 | test_support.run_unittest(SliceTest) | |
| 97 | ||
| 98 | if __name__ == "__main__": | |
| 99 | test_main() |