Merged revisions 77727 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r77727 | ezio.melotti | 2010-01-24 18:58:36 +0200 (Sun, 24 Jan 2010) | 1 line

  use assert[Not]IsInstance where appropriate
........
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
index 9aa11ac..1afd475 100644
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -595,6 +595,7 @@
         with zipfile.ZipFile(TESTFN, "w") as zf:
             zf.writestr("foo.txt", "Test for unicode filename")
             zf.writestr("\xf6.txt", "Test for unicode filename")
+            self.assertIsInstance(zf.infolist()[0].filename, str)
 
         with zipfile.ZipFile(TESTFN, "r") as zf:
             self.assertEqual(zf.filelist[0].filename, "foo.txt")