Port test_mimetools.py to PyUnit and add various tests.

From SF patch #736962.

Lib/test/output/test_mimetools

-test_mimetools
-7bit PASS
-8bit PASS
-base64 PASS
-quoted-printable PASS

Lib/test/test_mimetools.py

-from test.test_support import TestFailed
-import mimetools
-
-import string,StringIO
-start = string.ascii_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()
+import unittest
+from test import test_support
+
+import string, StringIO, mimetools, sets
+
+msgtext1 = mimetools.Message(StringIO.StringIO(
+"""Content-Type: text/plain; charset=iso-8859-1; format=flowed
+Content-Transfer-Encoding: 8bit
+
+Foo!
+"""))
+
+class MimeToolsTest(unittest.TestCase):
+
+    def test_decodeencode(self):
+        start = string.ascii_letters + "=" + string.digits + "\n"
+        for enc in ['7bit','8bit','base64','quoted-printable',
+                    'uuencode', 'x-uuencode', 'uue', 'x-uue']:
+            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)
+            self.assertEqual(o.getvalue(), start)
+
+    def test_boundary(self):
+        s = sets.Set([""])
+        for i in xrange(100):
+            nb = mimetools.choose_boundary()
+            self.assert_(nb not in s)
+            s.add(nb)
+
+    def test_message(self):
+        msg = mimetools.Message(StringIO.StringIO(msgtext1))
+        self.assertEqual(msg.gettype(), "text/plain")
+        self.assertEqual(msg.getmaintype(), "text")
+        self.assertEqual(msg.getsubtype(), "plain")
+        self.assertEqual(msg.getplist(), ["charset=iso-8859-1", "format=flowed"])
+        self.assertEqual(msg.getparamnames(), ["charset", "format"])
+        self.assertEqual(msg.getparam("charset"), "iso-8859-1")
+        self.assertEqual(msg.getparam("format"), "flowed")
+        self.assertEqual(msg.getparam("spam"), None)
+        self.assertEqual(msg.getencoding(), "8bit")
+
+def test_main():
+    test_support.run_unittest(MimeToolsTest)
+
+if __name__=="__main__":
+    test_main()
+