Updated test_validators to test the contents of the error messages.

Added some tests to the test_post_notifications.
Added a errorhandler for AuthErrors.

This endpoint is not being used anywhere, however there is some common code being used in the v1 post endpoint. The only thing that may be affected is the error response, hopefully they are the same.

app/v2/notifications/post_notifications.py

@@ -1,4 +1,6 @@
 from flask import request, jsonify
+from sqlalchemy.orm.exc import NoResultFound
+
 from app import api_user
 from app.dao import services_dao, templates_dao
 from app.models import SMS_TYPE
@@ -11,6 +13,7 @@ from app.notifications.validators import (check_service_message_limit,
                                           service_can_send_to_recipient,
                                           check_sms_content_char_count)
 from app.schema_validation import validate
+from app.v2.errors import BadRequestError
 from app.v2.notifications import notification_blueprint
 from app.v2.notifications.notification_schemas import (post_sms_request,
                                                        create_post_sms_response_from_notification)
@@ -52,8 +55,14 @@ def post_email_notification():
 
 
 def __validate_template(form, service):
-    template = templates_dao.dao_get_template_by_id_and_service_id(template_id=form['template_id'],
-                                                                   service_id=service.id)
+    try:
+        template = templates_dao.dao_get_template_by_id_and_service_id(template_id=form['template_id'],
+                                                                       service_id=service.id)
+    except NoResultFound:
+        message = 'Template not found'
+        raise BadRequestError(message=message,
+                              fields=[{'template': message}])
+
     check_template_is_for_notification_type(SMS_TYPE, template.template_type)
     check_template_is_active(template)
     template_with_content = create_content_for_notification(template, form.get('personalisation', {}))