--- a/test.py	Tue Jul 19 14:55:13 2016 +0800
+++ b/test.py	Tue Jul 19 17:44:31 2016 +0800
@@ -58,13 +58,14 @@
         response = self.c.get(url)
         data = json.loads(response.data)
 
-        self.assertTrue(any(resource.get('_id', None) == resource_id for resource in data))
+        self.assertIn(resource_id, [resource['_id'] for resource in data])
 
         url = self.all_url % self.workspace
         response = self.c.get(url)
         data = json.loads(response.data)
+        combined = chain(*data.values())
 
-        self.assertTrue(any(resource.get('_id', None) == resource_id for resource in chain(*data.values())))
+        self.assertIn(resource_id, [resource['_id'] for resource in combined])
 
     def update_resource(self, resource_id):
         url = self.item_url % (self.workspace, resource_id)