Escape performable tags

See this entry[1] in the django 1.9 release notes for details.

[1]: https://docs.djangoproject.com/en/1.9/releases/1.9/#simple-tag-now-wraps-tag-output-in-conditional-escape

analytical/templatetags/performable.py

@@ -7,6 +7,7 @@ from __future__ import absolute_import
 import re
 
 from django.template import Library, Node, TemplateSyntaxError
+from django.utils.safestring import mark_safe
 
 from analytical.utils import is_internal_ip, disable_html, get_identity, \
         get_required_setting
@@ -71,7 +72,7 @@ def performable_embed(hostname, page_id):
     """
     Include a Performable landing page.
     """
-    return EMBED_CODE % {'hostname': hostname, 'page_id': page_id}
+    return mark_safe(EMBED_CODE % {'hostname': hostname, 'page_id': page_id})
 
 
 def contribute_to_analytical(add_node):

analytical/tests/test_tag_performable.py

@@ -63,8 +63,9 @@ class PerformableEmbedTagTestCase(TagTestCase):
     def test_tag(self):
         domain = 'example.com'
         page = 'test'
-        r = self.render_tag('performable', 'performable_embed "%s" "%s"'
-                % (domain, page))
-        self.assertTrue(
-                "$f.initialize({'host': 'example.com', 'page': 'test'});" in r,
-                r)
+        tag = self.render_tag(
+            'performable', 'performable_embed "%s" "%s"' % (domain, page)
+        )
+        self.assertIn(
+            "$f.initialize({'host': 'example.com', 'page': 'test'});", tag
+        )