[FIX] mail_tracking_mailgun: json.load() won't swallow bytes (#269)

- json.load() in python under 3.6 doesn't support binary input.
- https://docs.python.org/3/whatsnew/3.6.html#json
- This way, we let requests to decode the response itself.

mail_tracking_mailgun/__manifest__.py

@@ -6,7 +6,7 @@
 {
     "name": "Mail tracking for Mailgun",
     "summary": "Mail tracking and Mailgun webhooks integration",
-    "version": "11.0.1.0.0",
+    "version": "11.0.1.0.1",
     "category": "Social Network",
     "website": "https://github.com/OCA/social",
     "author": "Tecnativa, "

mail_tracking_mailgun/models/mail_tracking_email.py

@@ -5,7 +5,6 @@
 
 import hashlib
 import hmac
-import json
 import requests
 from datetime import datetime
 from odoo import _, api, fields, models
@@ -115,7 +114,7 @@ class MailTrackingEmail(models.Model):
         ts = event.get('timestamp', False)
         try:
             ts = float(ts)
-        except:
+        except Exception:
             ts = False
         if ts:
             dt = datetime.utcfromtimestamp(ts)
@@ -238,7 +237,7 @@ class MailTrackingEmail(models.Model):
             if not res or res.status_code != 200:
                 raise ValidationError(_(
                     "Couldn't retrieve Mailgun information"))
-            content = json.loads(res.content)
+            content = res.json()
             if "items" not in content:
                 raise ValidationError(_("Event information not longer stored"))
             for item in content["items"]:

mail_tracking_mailgun/models/res_partner.py

@@ -6,7 +6,6 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 import requests
-import json
 
 from odoo import _, api, models
 from odoo.exceptions import UserError
@@ -57,7 +56,7 @@ class ResPartner(models.Model):
                 raise UserError(_(
                     'Error %s trying to '
                     'check mail' % res.status_code or 'of connection'))
-            content = json.loads(res.content)
+            content = res.json()
             if 'mailbox_verification' not in content:
                 if not self.env.context.get('mailgun_auto_check'):
                     raise UserError(

mail_tracking_mailgun/tests/test_mailgun.py

@@ -7,7 +7,6 @@ from odoo.tools import mute_logger
 from odoo.tests.common import TransactionCase
 from odoo.exceptions import UserError, ValidationError
 import mock
-import json
 
 _packagepath = 'odoo.addons.mail_tracking_mailgun'
 
@@ -336,10 +335,10 @@ class TestMailgun(TransactionCase):
         self.partner.email_bounced = False
         mock_request.get.return_value.apparent_encoding = 'ascii'
         mock_request.get.return_value.status_code = 200
-        mock_request.get.return_value.content = json.dumps({
+        mock_request.get.return_value.json.return_value = {
             'is_valid': True,
             'mailbox_verification': 'true',
-        }, ensure_ascii=True)
+        }
         # Trigger email auto validation in partner
         self.env['ir.config_parameter'].set_param(
             'mailgun.auto_check_partner_email', 'True')
@@ -347,24 +346,24 @@ class TestMailgun(TransactionCase):
         self.assertFalse(self.partner.email_bounced)
         self.partner.email = 'xoxoxoxo@tecnativa.com'
         # Not a valid mailbox
-        mock_request.get.return_value.content = json.dumps({
+        mock_request.get.return_value.json.return_value = {
             'is_valid': True,
             'mailbox_verification': 'false',
-        }, ensure_ascii=True)
+        }
         with self.assertRaises(UserError):
             self.partner.check_email_validity()
         # Not a valid mail address
-        mock_request.get.return_value.content = json.dumps({
+        mock_request.get.return_value.json.return_value = {
             'is_valid': False,
             'mailbox_verification': 'false',
-        }, ensure_ascii=True)
+        }
         with self.assertRaises(UserError):
             self.partner.check_email_validity()
         # Unable to fully validate
-        mock_request.get.return_value.content = json.dumps({
+        mock_request.get.return_value.json.return_value = {
             'is_valid': True,
             'mailbox_verification': 'unknown',
-        }, ensure_ascii=True)
+        }
         with self.assertRaises(UserError):
             self.partner.check_email_validity()
         self.assertTrue(self.partner.email_bounced)
@@ -402,9 +401,7 @@ class TestMailgun(TransactionCase):
 
     @mock.patch(_packagepath + '.models.mail_tracking_email.requests')
     def test_manual_check(self, mock_request):
-        mock_request.get.return_value.content = json.dumps(self.response,
-                                                           ensure_ascii=True)
-        mock_request.get.return_value.apparent_encoding = 'ascii'
+        mock_request.get.return_value.json.return_value = self.response
         mock_request.get.return_value.status_code = 200
         self.tracking_email.action_manual_check_mailgun()
         event = self.env['mail.tracking.event'].search(
@@ -417,8 +414,6 @@ class TestMailgun(TransactionCase):
         with self.assertRaises(ValidationError):
             self.tracking_email.action_manual_check_mailgun()
         mock_request.get.return_value.status_code = 200
-        mock_request.get.return_value.content = json.dumps('{}',
-                                                           ensure_ascii=True)
-        mock_request.get.return_value.apparent_encoding = 'ascii'
+        mock_request.get.return_value.json.return_value = {}
         with self.assertRaises(ValidationError):
             self.tracking_email.action_manual_check_mailgun()