Added extra assertion for better readability

Author: Tim-Kerr

tests/integration/test_ontology.py

@@ -8,6 +8,7 @@
 
 def test_delete_tool_feature_from_ontology(client, ontology):
     feature_schema_to_delete = ontology.normalized['tools'][0]
+    assert len(ontology.normalized['tools']) == 2
     result = client.delete_feature_schema_from_ontology(
         ontology.uid, feature_schema_to_delete['featureSchemaId'])
     assert result['deleted'] == True