Various tests cleanup: check_warnings/check_py3k_warnings, unittest.assert* and setUp/tearDown.
diff --git a/Lib/test/test_MimeWriter.py b/Lib/test/test_MimeWriter.py
index 6a32cb6..2f6636d 100644
--- a/Lib/test/test_MimeWriter.py
+++ b/Lib/test/test_MimeWriter.py
@@ -8,12 +8,9 @@
 """
 
 import unittest, StringIO
-from test.test_support import run_unittest
+from test.test_support import run_unittest, import_module
 
-import warnings
-warnings.filterwarnings("ignore", "the MimeWriter module is deprecated.*",
-                        DeprecationWarning)
-
+import_module("MimeWriter", deprecated=True)
 from MimeWriter import MimeWriter
 
 SELLER = '''\