Lint and coverage

src/braket/tasks/gate_model_quantum_task_result.py

@@ -134,12 +134,12 @@ def __eq__(self, other) -> bool:
             return self.task_metadata.id == other.task_metadata.id
         return NotImplemented
 
-    def get_compiled_circuit(self) -> str:
+    def get_compiled_circuit(self) -> Optional[str]:
         """
         Get the compiled circuit, if one is available.
 
         Returns:
-            str: The compiled circuit or None.
+            Optional[str]: The compiled circuit or None.
         """
         metadata = self.additional_metadata
         if not metadata:

test/unit_tests/braket/tasks/test_gate_model_quantum_task_result.py

@@ -157,7 +157,6 @@ def result_oqc(task_metadata_shots, additional_metadata_oqc):
     return GateModelQuantumTaskResult.from_object(result)
 
 
-
 @pytest.fixture
 def result_str_1(result_obj_1):
     return result_obj_1.json()
@@ -337,6 +336,13 @@ def test_get_compiled_circuit(result_obj_1):
     assert result.get_compiled_circuit() == None
 
 
+def test_get_compiled_circuit_no_metadata(result_obj_1):
+    """Test that the method does not raise an error if metadata is missing."""
+    result = GateModelQuantumTaskResult.from_object(result_obj_1)
+    result.additional_metadata = None
+    assert result.get_compiled_circuit() == None
+
+
 def test_measurement_counts_from_measurements():
     measurements: np.ndarray = np.array(
         [[1, 0, 1, 0], [0, 0, 0, 0], [1, 0, 1, 0], [1, 0, 0, 0], [1, 0, 0, 0], [1, 0, 1, 0]]