From: Andrew Dalke <dalke@dalkescientific.com>
Date: Thu, 25 May 2006 16:30:52 +0000 (+0000)
Subject: Added tests for implementation error we came up with in the need for speed sprint.
X-Git-Tag: v2.5b1~538
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2bddcbf10ed5fa0142a95f4e5d66acda355bf9e4;p=python

Added tests for implementation error we came up with in the need for speed sprint.
---

diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 3a5fbfefb5..f76a9ebe08 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -882,6 +882,25 @@ class MixinStrUnicodeUserStringTest:
                 else:
                     self.checkcall(format, "__mod__", value)
 
+    def test_inplace_rewrites(self):
+        # Check that strings don't copy and modify cached single-character strings
+        self.checkequal('a', 'A', 'lower')
+        self.checkequal(True, 'A', 'isupper')
+        self.checkequal('A', 'a', 'upper')
+        self.checkequal(True, 'a', 'islower')
+ 
+        self.checkequal('a', 'A', 'replace', 'A', 'a')
+        self.checkequal(True, 'A', 'isupper')
+
+        self.checkequal('A', 'a', 'capitalize')
+        self.checkequal(True, 'a', 'islower')
+        
+        self.checkequal('A', 'a', 'swapcase')
+        self.checkequal(True, 'a', 'islower')
+
+        self.checkequal('A', 'a', 'title')
+        self.checkequal(True, 'a', 'islower')
+
 
 class MixinStrStringUserStringTest:
     # Additional tests for 8bit strings, i.e. str, UserString and