Return status code 304 when template is not updated.

Moved import

app/template/rest.py

@@ -64,7 +64,7 @@ def update_template(service_id, template_id):
     update_template['content'] = _strip_html(update_template['content'])
     # Check if there is a change to make.
     if current_data == update_template:
-        return jsonify(data=update_template), 200
+        return jsonify(data=update_template), 304
 
     update_dict, errors = template_schema.load(update_template)
     if errors:

tests/app/template/test_rest.py

@@ -3,6 +3,7 @@ import random
 import string
 from app.models import Template
 from tests import create_authorization_header
+from app.dao.templates_dao import dao_get_template_by_id
 
 
 def test_should_create_a_new_sms_template_for_a_service(notify_api, sample_user, sample_service):
@@ -439,7 +440,6 @@ def test_update_does_not_create_new_version_when_there_is_no_change(notify_api,
             resp = client.post('/service/{}/template/{}'.format(sample_template.service_id, sample_template.id),
                                data=json.dumps(data),
                                headers=[('Content-Type', 'application/json'), auth_header])
-            assert resp.status_code == 200
-    from app.dao.templates_dao import dao_get_template_by_id
+            assert resp.status_code == 304
     template = dao_get_template_by_id(sample_template.id)
     assert template.version == 1