1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/test/test_string.py b/Lib/test/test_string.py
index ec57c2684d..c7c3e72bb8 100644
--- a/Lib/test/test_string.py
+++ b/Lib/test/test_string.py
@@ -84,6 +84,21 @@ test('istitle', 'Not a capitalized String', 0)
 test('istitle', 'Not\ta Titlecase String', 0)
 test('istitle', 'Not--a Titlecase String', 0)
 
+test('isalpha', 'a', 1)
+test('isalpha', 'A', 1)
+test('isalpha', '\n', 0)
+test('isalpha', 'abc', 1)
+test('isalpha', 'aBc123', 0)
+test('isalpha', 'abc\n', 0)
+
+test('isalnum', 'a', 1)
+test('isalnum', 'A', 1)
+test('isalnum', '\n', 0)
+test('isalnum', '123abc456', 1)
+test('isalnum', 'a1b3c', 1)
+test('isalnum', 'aBc000 ', 0)
+test('isalnum', 'abc\n', 0)
+
 test('splitlines', "abc\ndef\n\rghi", ['abc', 'def', '', 'ghi'])
 test('splitlines', "abc\ndef\n\r\nghi", ['abc', 'def', '', 'ghi'])
 test('splitlines', "abc\ndef\r\nghi", ['abc', 'def', 'ghi'])