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_posix.py b/Lib/test/test_posix.py
index 87c63ad..01cd044 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -132,7 +132,7 @@
             fp = open(support.TESTFN)
             try:
                 fd = posix.dup(fp.fileno())
-                self.assertTrue(isinstance(fd, int))
+                self.assertIsInstance(fd, int)
                 os.close(fd)
             finally:
                 fp.close()
@@ -260,7 +260,7 @@
     def test_umask(self):
         if hasattr(posix, 'umask'):
             old_mask = posix.umask(0)
-            self.assertTrue(isinstance(old_mask, int))
+            self.assertIsInstance(old_mask, int)
             posix.umask(old_mask)
 
     def test_strerror(self):