Add mimetools testcase.
diff --git a/Lib/test/test_mimetools.py b/Lib/test/test_mimetools.py
new file mode 100644
index 0000000..4ee11a1
--- /dev/null
+++ b/Lib/test/test_mimetools.py
@@ -0,0 +1,18 @@
+from test_support import TestFailed
+import mimetools
+
+import string,StringIO
+start = string.letters + "=" + string.digits + "\n"
+for enc in ['7bit','8bit','base64','quoted-printable']:
+ print enc,
+ i = StringIO.StringIO(start)
+ o = StringIO.StringIO()
+ mimetools.encode(i,o,enc)
+ i = StringIO.StringIO(o.getvalue())
+ o = StringIO.StringIO()
+ mimetools.decode(i,o,enc)
+ if o.getvalue()==start:
+ print "PASS"
+ else:
+ print "FAIL"
+ print o.getvalue()