diff options
Diffstat (limited to 'Lib/test/string_tests.py')
| -rw-r--r-- | Lib/test/string_tests.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py index 85e52f3..ea49e38 100644 --- a/Lib/test/string_tests.py +++ b/Lib/test/string_tests.py @@ -216,6 +216,30 @@ class BaseTest(unittest.TestCase): self.checkraises(TypeError, 'hello', 'rfind') self.checkraises(TypeError, 'hello', 'rfind', 42) + # For a variety of combinations, + # verify that str.rfind() matches __contains__ + # and that the found substring is really at that location + charset = ['', 'a', 'b', 'c'] + digits = 5 + base = len(charset) + teststrings = set() + for i in range(base ** digits): + entry = [] + for j in range(digits): + i, m = divmod(i, base) + entry.append(charset[m]) + teststrings.add(''.join(entry)) + teststrings = [self.fixtype(ts) for ts in teststrings] + for i in teststrings: + for j in teststrings: + loc = i.rfind(j) + r1 = (loc != -1) + r2 = j in i + if r1 != r2: + self.assertEqual(r1, r2) + if loc != -1: + self.assertEqual(i[loc:loc+len(j)], j) + def test_index(self): self.checkequal(0, 'abcdefghiabc', 'index', '') self.checkequal(3, 'abcdefghiabc', 'index', 'def') |