Improve test.

Author: shyuep

tests/io/vasp/test_outputs.py

@@ -328,6 +328,7 @@ def test_standard(self):
         assert entry_id_toks[0] == "vasprun"
         assert entry_id_toks[1] == "20100729"
         assert entry_id_toks[2] == "15.0"
+        assert entry_id_toks[3] == "da7b01a471dc249323505c0676ae7350"
 
         assert entry.parameters["run_type"] == "PBEO or other Hybrid Functional"