use assert[Not]IsInstance where appropriate
diff --git a/Lib/test/test_wsgiref.py b/Lib/test/test_wsgiref.py
index a3bc99f..a21d6e2 100755
--- a/Lib/test/test_wsgiref.py
+++ b/Lib/test/test_wsgiref.py
@@ -179,10 +179,10 @@
# Check defaulting when empty
env = {}
util.setup_testing_defaults(env)
- if isinstance(value,StringIO):
- self.assertTrue(isinstance(env[key],StringIO))
+ if isinstance(value, StringIO):
+ self.assertIsInstance(env[key], StringIO)
else:
- self.assertEqual(env[key],value)
+ self.assertEqual(env[key], value)
# Check existing value
env = {key:alt}