commit a74b67e15e19e2ba95e66e5a9ac233b4e1f79d68
author Raymond Hettinger <python@rcn.com> Fri May 11 17:59:59 2007 +0000
committer Raymond Hettinger <python@rcn.com> Fri May 11 17:59:59 2007 +0000
tree f5196efbf909a024f527a771b8361278be320e91
parent e3e62b378336ee81b8e4b51247a3b32e4c35d74d

Better tests for posixpath.commonprefix

Lib/test/test_posixpath.py

diff --git a/Lib/test/test_posixpath.py b/Lib/test/test_posixpath.py
index 0abf464..88aa68c 100644
--- a/Lib/test/test_posixpath.py
+++ b/Lib/test/test_posixpath.py
@@ -130,6 +130,16 @@
             "/home/swen/spam"
         )
 
+        testlist = ['', 'abc', 'Xbcd', 'Xb', 'XY', 'abcd', 'aXc', 'abd', 'ab', 'aX', 'abcX']
+        for s1 in testlist:
+            for s2 in testlist:
+                p = posixpath.commonprefix([s1, s2])
+                self.assert_(s1.startswith(p))
+                self.assert_(s2.startswith(p))
+                if s1 != s2:
+                    n = len(p)
+                    self.assertNotEqual(s1[n:n+1], s2[n:n+1])
+
     def test_getsize(self):
         f = open(test_support.TESTFN, "wb")
         try: