Merged revisions 79281 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r79281 | victor.stinner | 2010-03-22 13:50:40 +0100 (lun., 22 mars 2010) | 16 lines

  Merged revisions 79278,79280 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r79278 | victor.stinner | 2010-03-22 13:24:37 +0100 (lun., 22 mars 2010) | 2 lines

    Issue #1583863: An unicode subclass can now override the __str__ method
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    r79280 | victor.stinner | 2010-03-22 13:36:28 +0100 (lun., 22 mars 2010) | 5 lines

    Fix the NEWS about my last commit: an unicode subclass can now override the
    __unicode__ method (and not the __str__ method).

    Simplify also the testcase.
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diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 7f87b43..6e4f048 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1223,6 +1223,14 @@
         self.assertRaises(MemoryError, alloc)
         self.assertRaises(MemoryError, alloc)
 
+    def test_format_subclass(self):
+        class S(str):
+            def __str__(self):
+                return '__str__ overridden'
+        s = S('xxx')
+        self.assertEquals("%s" % s, '__str__ overridden')
+        self.assertEquals("{}".format(s), '__str__ overridden')
+
 
 def test_main():
     support.run_unittest(__name__)