diff options
| -rw-r--r-- | Lib/test/test_slice.py | 102 |
1 files changed, 90 insertions, 12 deletions
diff --git a/Lib/test/test_slice.py b/Lib/test/test_slice.py index 49ed20e..d216c30 100644 --- a/Lib/test/test_slice.py +++ b/Lib/test/test_slice.py @@ -1,16 +1,94 @@ # tests for slice objects; in particular the indices method. -from test.test_support import vereq +import unittest +from test import test_support + import sys -vereq(slice(None ).indices(10), (0, 10, 1)) -vereq(slice(None, None, 2).indices(10), (0, 10, 2)) -vereq(slice(1, None, 2).indices(10), (1, 10, 2)) -vereq(slice(None, None, -1).indices(10), (9, -1, -1)) -vereq(slice(None, None, -2).indices(10), (9, -1, -2)) -vereq(slice(3, None, -2).indices(10), (3, -1, -2)) -vereq(slice(-100, 100 ).indices(10), slice(None).indices(10)) -vereq(slice(100, -100, -1).indices(10), slice(None, None, -1).indices(10)) -vereq(slice(-100L, 100L, 2L).indices(10), (0, 10, 2)) - -vereq(range(10)[::sys.maxint - 1], [0]) +class SliceTest(unittest.TestCase): + + def test_constructor(self): + self.assertRaises(TypeError, slice) + self.assertRaises(TypeError, slice, 1, 2, 3, 4) + + def test_repr(self): + self.assertEqual(repr(slice(1, 2, 3)), "slice(1, 2, 3)") + + def test_cmp(self): + s1 = slice(1, 2, 3) + s2 = slice(1, 2, 3) + s3 = slice(1, 2, 4) + self.assertEqual(s1, s2) + self.assertNotEqual(s1, s3) + + class Exc(Exception): + pass + + class BadCmp(object): + def __eq__(self, other): + raise Exc + + s1 = slice(BadCmp()) + s2 = slice(BadCmp()) + self.assertRaises(Exc, cmp, s1, s2) + self.assertEqual(s1, s1) + + s1 = slice(1, BadCmp()) + s2 = slice(1, BadCmp()) + self.assertEqual(s1, s1) + self.assertRaises(Exc, cmp, s1, s2) + + s1 = slice(1, 2, BadCmp()) + s2 = slice(1, 2, BadCmp()) + self.assertEqual(s1, s1) + self.assertRaises(Exc, cmp, s1, s2) + + def test_members(self): + s = slice(1) + self.assertEqual(s.start, None) + self.assertEqual(s.stop, 1) + self.assertEqual(s.step, None) + + s = slice(1, 2) + self.assertEqual(s.start, 1) + self.assertEqual(s.stop, 2) + self.assertEqual(s.step, None) + + s = slice(1, 2, 3) + self.assertEqual(s.start, 1) + self.assertEqual(s.stop, 2) + self.assertEqual(s.step, 3) + + class AnyClass: + pass + + obj = AnyClass() + s = slice(obj) + self.assert_(s.stop is obj) + + def test_indices(self): + self.assertEqual(slice(None ).indices(10), (0, 10, 1)) + self.assertEqual(slice(None, None, 2).indices(10), (0, 10, 2)) + self.assertEqual(slice(1, None, 2).indices(10), (1, 10, 2)) + self.assertEqual(slice(None, None, -1).indices(10), (9, -1, -1)) + self.assertEqual(slice(None, None, -2).indices(10), (9, -1, -2)) + self.assertEqual(slice(3, None, -2).indices(10), (3, -1, -2)) + self.assertEqual( + slice(-100, 100 ).indices(10), + slice(None).indices(10) + ) + self.assertEqual( + slice(100, -100, -1).indices(10), + slice(None, None, -1).indices(10) + ) + self.assertEqual(slice(-100L, 100L, 2L).indices(10), (0, 10, 2)) + + self.assertEqual(range(10)[::sys.maxint - 1], [0]) + + self.assertRaises(OverflowError, slice(None).indices, 1L<<100) + +def test_main(): + test_support.run_unittest(SliceTest) + +if __name__ == "__main__": + test_main() |