Increase test coverage

Author: garrison

qrao/encoding.py

@@ -327,6 +327,7 @@ def qubit_op(self) -> Union[PauliOp, PauliSumOp]:
         "from now on and will be removed in the future."
     )
     def offset(self) -> float:
+        # pragma: no cover (deprecated)
         if self._qubit_op is None:
             raise AttributeError(
                 "No objective function has been provided from which a "

tests/test_quantum_random_access_optimizer.py

@@ -161,6 +161,8 @@ def test_solve_without_args(self):
         self.assertIsNot(results.samples[0].fval, np.nan)
         self.assertIsInstance(results.relaxed_results, MinimumEigensolverResult)
         self.assertIsInstance(results.rounding_results, RoundingResult)
+        self.assertIsInstance(results.relaxed_fval, float)
+        self.assertIsInstance(repr(results), str)
 
     def test_empty_encoding(self):
         """Test that an exception is raised if the encoding has no qubits"""