Add simple test for render audit event filter

tests/test_filters.py

@@ -1,6 +1,7 @@
 import pytest
 
-from atst.filters import dollars
+from atst.filters import dollars, renderAuditEvent
+from atst.models import AuditEvent
 
 
 @pytest.mark.parametrize(
@@ -15,3 +16,15 @@ from atst.filters import dollars
 )
 def test_dollar_fomatter(input, expected):
     assert dollars(input) == expected
+
+
+def test_render_audit_event_with_known_resource_type():
+    event = AuditEvent(resource_type='user')
+    result = renderAuditEvent(event)
+    assert '<article' in result
+
+
+def test_render_audit_event_with_unknown_resource_type():
+    event = AuditEvent(resource_type='boat')
+    result = renderAuditEvent(event)
+    assert '<article' in result