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Diffstat (limited to 'Lib/test/test_mmap.py')
| -rw-r--r-- | Lib/test/test_mmap.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py index b0f9e9e..f2232e4 100644 --- a/Lib/test/test_mmap.py +++ b/Lib/test/test_mmap.py @@ -305,6 +305,40 @@ class MmapTests(unittest.TestCase): m[x] = b self.assertEqual(m[x], b) + def test_extended_getslice(self): + # Test extended slicing by comparing with list slicing. + s = bytes(reversed(range(256))) + m = mmap.mmap(-1, len(s)) + m[:] = s + self.assertEqual(m[:], s) + indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300) + for start in indices: + for stop in indices: + # Skip step 0 (invalid) + for step in indices[1:]: + self.assertEqual(m[start:stop:step], + s[start:stop:step]) + + def test_extended_set_del_slice(self): + # Test extended slicing by comparing with list slicing. + s = bytes(reversed(range(256))) + m = mmap.mmap(-1, len(s)) + indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300) + for start in indices: + for stop in indices: + # Skip invalid step 0 + for step in indices[1:]: + m[:] = s + self.assertEqual(m[:], s) + L = list(s) + # Make sure we have a slice of exactly the right length, + # but with different data. + data = L[start:stop:step] + data = bytes(reversed(data)) + L[start:stop:step] = data + m[start:stop:step] = data + self.assertEquals(m[:], bytes(L)) + def test_main(): run_unittest(MmapTests) |