Fix special character encoding in Signal notifications

Fixes: #767

CHANGELOG.md

@@ -11,6 +11,7 @@ All notable changes to this project will be documented in this file.
 
 ### Bug Fixes
 - Fix the Signal integration to handle unexpected RPC messages better (#763)
+- Fix special character encoding in Signal notifications (#767)
 
 ## v2.5 - 2022-12-14
 

hc/api/tests/test_notify_signal.py

@@ -173,7 +173,7 @@ class NotifySignalTestCase(BaseTestCase):
         socketobj = setup_mock(socket, {})
 
         other = Check(project=self.project)
-        other.name = "Foobar"
+        other.name = "Foobar & Co"
         other.status = "down"
         other.last_ping = now() - td(minutes=61)
         other.save()
@@ -182,7 +182,7 @@ class NotifySignalTestCase(BaseTestCase):
 
         message = socketobj.req["params"]["message"]
         self.assertIn("The following checks are also down", message)
-        self.assertIn("Foobar", message)
+        self.assertIn("Foobar & Co", message)
 
     @patch("hc.api.transports.socket.socket")
     def test_it_does_not_show_more_than_10_other_checks(self, socket):

templates/integrations/signal_message.html

@@ -13,7 +13,7 @@
         {% else %}
             {% line %}The following checks are {% if check.status == "down" %}also{% else %}still{% endif %} down:{% endline %}
             {% for c in down_checks %}
-                {% line %}- “{{ c.name_then_code }}” (last ping: {{ c.last_ping|naturaltime }}){% endline %}
+                {% line %}- “{{ c.name_then_code|safe }}” (last ping: {{ c.last_ping|naturaltime }}){% endline %}
             {% endfor %}
         {% endif %}
     {% else %}