diff options
Diffstat (limited to 'Lib/test/test_userstring.py')
| -rwxr-xr-x | Lib/test/test_userstring.py | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Lib/test/test_userstring.py b/Lib/test/test_userstring.py index ec0f1a9336..8bd8d108f7 100755 --- a/Lib/test/test_userstring.py +++ b/Lib/test/test_userstring.py @@ -3,6 +3,7 @@ # UserString instances should behave similar to builtin string objects. import unittest +import string from test import test_support, string_tests from UserString import UserString, MutableString @@ -86,6 +87,28 @@ class MutableStringTest(UserStringTest): del s[-1:10] self.assertEqual(s, "fo") + def test_extended_set_del_slice(self): + indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100) + orig = string.ascii_letters + string.digits + for start in indices: + for stop in indices: + # Use indices[1:] when MutableString can handle real + # extended slices + for step in (None, 1, -1): + s = self.type2test(orig) + L = list(orig) + # Make sure we have a slice of exactly the right length, + # but with (hopefully) different data. + data = L[start:stop:step] + data.reverse() + L[start:stop:step] = data + s[start:stop:step] = "".join(data) + self.assertEquals(s, "".join(L)) + + del L[start:stop:step] + del s[start:stop:step] + self.assertEquals(s, "".join(L)) + def test_immutable(self): s = self.type2test("foobar") s2 = s.immutable() |