diff --git a/tests/python/unit_tests/basis_set/test_basis_set.py b/tests/python/unit_tests/basis_set/test_basis_set.py
index 824a5844..69c8d887 100644
--- a/tests/python/unit_tests/basis_set/test_basis_set.py
+++ b/tests/python/unit_tests/basis_set/test_basis_set.py
@@ -19,4 +19,6 @@ class TestBasisSet(unittest.TestCase):
     def test_molecular_basis_set_pt(self):
         pt = simde.MolecularBasisSet()
         self.assertIn('Molecule', pt.inputs())
-        self.assertIn('Molecular Basis Set', pt.results())
\ No newline at end of file
+        self.assertEqual(len(pt.inputs()), 1)
+        self.assertIn('Molecular Basis Set', pt.results())
+        self.assertEqual(len(pt.results()), 1)
\ No newline at end of file