startswith and endswith don't accept None as slice index. Patch by Torsten Becker. (closes #11828)
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 546b486..5931f3d 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -1177,6 +1177,63 @@
# mixed use of str and unicode
self.assertEqual('a/b/c'.rpartition(u'/'), ('a/b', '/', 'c'))
+ def test_none_arguments(self):
+ # issue 11828
+ s = 'hello'
+ self.checkequal(2, s, 'find', 'l', None)
+ self.checkequal(3, s, 'find', 'l', -2, None)
+ self.checkequal(2, s, 'find', 'l', None, -2)
+ self.checkequal(0, s, 'find', 'h', None, None)
+
+ self.checkequal(3, s, 'rfind', 'l', None)
+ self.checkequal(3, s, 'rfind', 'l', -2, None)
+ self.checkequal(2, s, 'rfind', 'l', None, -2)
+ self.checkequal(0, s, 'rfind', 'h', None, None)
+
+ self.checkequal(2, s, 'index', 'l', None)
+ self.checkequal(3, s, 'index', 'l', -2, None)
+ self.checkequal(2, s, 'index', 'l', None, -2)
+ self.checkequal(0, s, 'index', 'h', None, None)
+
+ self.checkequal(3, s, 'rindex', 'l', None)
+ self.checkequal(3, s, 'rindex', 'l', -2, None)
+ self.checkequal(2, s, 'rindex', 'l', None, -2)
+ self.checkequal(0, s, 'rindex', 'h', None, None)
+
+ self.checkequal(2, s, 'count', 'l', None)
+ self.checkequal(1, s, 'count', 'l', -2, None)
+ self.checkequal(1, s, 'count', 'l', None, -2)
+ self.checkequal(0, s, 'count', 'x', None, None)
+
+ self.checkequal(True, s, 'endswith', 'o', None)
+ self.checkequal(True, s, 'endswith', 'lo', -2, None)
+ self.checkequal(True, s, 'endswith', 'l', None, -2)
+ self.checkequal(False, s, 'endswith', 'x', None, None)
+
+ self.checkequal(True, s, 'startswith', 'h', None)
+ self.checkequal(True, s, 'startswith', 'l', -2, None)
+ self.checkequal(True, s, 'startswith', 'h', None, -2)
+ self.checkequal(False, s, 'startswith', 'x', None, None)
+
+ def test_find_etc_raise_correct_error_messages(self):
+ # issue 11828
+ s = 'hello'
+ x = 'x'
+ self.assertRaisesRegexp(TypeError, r'\bfind\b', s.find,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'\brfind\b', s.rfind,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'\bindex\b', s.index,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'\brindex\b', s.rindex,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'^count\(', s.count,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'^startswith\(', s.startswith,
+ x, None, None, None)
+ self.assertRaisesRegexp(TypeError, r'^endswith\(', s.endswith,
+ x, None, None, None)
+
class MixinStrStringUserStringTest:
# Additional tests for 8bit strings, i.e. str, UserString and
# the string module