Ensure that the returned project contains the correct etag.

The etag of the post_internal response was used, which is NOT the
same as the etag of the project document itself.

pillar/application/modules/projects.py

@@ -149,6 +149,12 @@ def _create_new_project(project_name, user_id, overrides):
         return abort_with_error(status)
     project.update(result)
 
+    # Now re-fetch the etag, as both the initial document and the returned
+    # result do not contain the same etag as the database.
+    document = current_app.data.driver.db['projects'].find_one(project['_id'],
+                                                               projection={'_etag': 1})
+    project.update(document)
+
     log.info('Created project %s for user %s', project['_id'], user_id)
 
     return project

tests/test_project_management.py

@@ -50,6 +50,11 @@ class ProjectCreationTest(AbstractPillarTest):
         self.assertEqual('p-%s' % project_id, project['url'])
         self.assertEqual(1, len(project['permissions']['groups']))
 
+        # Check the etag
+        resp = self.client.get('/projects/%s' % project_id)
+        from_db = json.loads(resp.data)
+        self.assertEqual(from_db['_etag'], project['_etag'])
+
         group_id = ObjectId(project['permissions']['groups'][0]['group'])
 
         # Check that there is a group for the project, and that the user is member of it.