use assert[Not]IsInstance where appropriate
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 09b113b..afeb616 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -133,7 +133,7 @@
fp = open(test_support.TESTFN)
try:
fd = posix.dup(fp.fileno())
- self.assertTrue(isinstance(fd, int))
+ self.assertIsInstance(fd, int)
os.close(fd)
finally:
fp.close()
@@ -273,7 +273,7 @@
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):