Add test for #102 based on @doktorstick's example, with armor=False.

This test is currently failing on Python3, meaning that decryption of binary
GnuPG files is broken for Python3.

 * ADD a test to reproduce Issue #102:
   https://github.com/isislovecruft/python-gnupg/issues/102

gnupg/test/test_gnupg.py

@@ -1105,6 +1105,34 @@ authentication."""
             decoded = message.decode(self.gpg._encoding, self.gpg._decode_errors)
             self.assertEqual(str(decrypted), decoded)
 
+    def test_decryption_noarmor_with_bytes_literal(self):
+        """Test that ``decrypt(encrypt(b'foo', armor=False), ...)`` is successful."""
+        with open(os.path.join(_files, 'kat.sec')) as katsec:
+            self.gpg.import_keys(katsec.read())
+        kat = self.gpg.list_keys('kat')[0]['fingerprint']
+
+        message_filename = os.path.join(_files, 'cypherpunk_manifesto')
+        with open(message_filename, 'rb') as f:
+            kwargs = dict(armor=False)
+            message = b'Dance like a psycho'
+            encrypted = self.gpg.encrypt(message, kat, **kwargs)
+            self.assertTrue(encrypted.ok)
+            self.assertGreater(len(encrypted.data), 0)
+
+            debugfh = os.path.join(os.getcwd(), 'debug-noarmor.gpg')
+            with open(debugfh, 'wb') as fh:
+                fh.write(encrypted.data)
+                fh.flush()
+
+            decrypted = self.gpg.decrypt(encrypted.data, passphrase='overalls', armor=False)
+            print(decrypted.stderr)
+            self.assertTrue(decrypted.ok)
+            self.assertGreater(len(decrypted.data), 0)
+            # Decode the message so that we can easily compare it with the
+            # decrypted version in both Python2 and Python3:
+            decoded = message.decode(self.gpg._encoding, self.gpg._decode_errors)
+            self.assertEqual(str(decrypted), decoded)
+
     def test_encryption_one_hidden_recipient_one_not(self):
         """Test to ensure hidden recipient isn't detailed in packet info"""
 
@@ -1418,6 +1446,7 @@ suites = { 'parsers': set(['test_parsers_fix_unsafe',
                          'test_encryption_throw_keyids',
                          'test_decryption',
                          'test_decryption_with_bytes_literal',
+                         'test_decryption_noarmor_with_bytes_literal',
                          'test_symmetric_encryption_and_decryption',
                          'test_file_encryption_and_decryption',
                          'test_encryption_to_filename',