Resolved encoding/decoding problem.

In MIMEtext by default encodes in 'us-ascii'
for py27 and 'utf-8' in py34. So 'utf-8'
encoding is specified in argument.

Also in py27 constant string is already in unicode
type but in py34 it is byte type. So
string is decoded for py27 in unit test.

Partially-Implements: blueprint mistral-py3
Change-Id: I7004bae1d46d20630a30cac1abb65efe68765401

mistral/actions/std_actions.py

@@ -15,18 +15,19 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+from email.header import Header
 from email.mime import text
+
 import json
 import requests
 import smtplib
 
-from oslo_log import log as logging
-
 from mistral.actions import base
 from mistral import exceptions as exc
 from mistral.utils import javascript
 from mistral.utils import ssh_utils
 from mistral.workflow import utils as wf_utils
+from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)
 
@@ -286,9 +287,8 @@ class SendEmailAction(base.Action):
                  (self.sender, self.to, self.subject,
                   self.smtp_server, self.body[:128]))
 
-        # TODO(dzimine): handle utf-8, http://stackoverflow.com/a/14506784
-        message = text.MIMEText(self.body)
-        message['Subject'] = self.subject
+        message = text.MIMEText(self.body, _charset='utf-8')
+        message['Subject'] = Header(self.subject, 'utf-8')
         message['From'] = self.sender
         message['To'] = self.to
 

mistral/tests/unit/actions/test_std_email_action.py

@@ -14,8 +14,11 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+import base64
+from email.header import decode_header
 from email import parser
 import mock
+import six
 import testtools
 
 from mistral.actions import std_actions as std
@@ -103,8 +106,26 @@ class SendEmailActionTest(base.BaseTest):
 
         self.assertEqual(self.from_addr, message['from'])
         self.assertEqual(self.to_addrs_str, message['to'])
-        self.assertEqual(self.subject, message['subject'])
-        self.assertEqual(self.body, message.get_payload())
+        if six.PY3:
+            self.assertEqual(
+                self.subject,
+                decode_header(message['subject'])[0][0].decode('utf-8')
+            )
+        else:
+            self.assertEqual(
+                self.subject.decode('utf-8'),
+                decode_header(message['subject'])[0][0].decode('utf-8')
+            )
+        if six.PY3:
+            self.assertEqual(
+                self.body,
+                base64.b64decode(message.get_payload()).decode('utf-8')
+            )
+        else:
+            self.assertEqual(
+                self.body.decode('utf-8'),
+                base64.b64decode(message.get_payload()).decode('utf-8')
+            )
 
     @mock.patch('smtplib.SMTP')
     def test_with_password(self, smtp):