[enhance] Increase the coverage

Author: nabenabe0928

test/test_api/test_results_manager.py

@@ -13,7 +13,7 @@
 from smac.runhistory.runhistory import RunHistory, StatusType
 
 from autoPyTorch.api.base_task import BaseTask
-from autoPyTorch.api.results_manager import ResultsManager, STATUS2MSG, cost2metric
+from autoPyTorch.api.results_manager import ResultsManager, SearchResults, STATUS2MSG, cost2metric
 from autoPyTorch.metrics import accuracy, balanced_accuracy, log_loss
 
 
@@ -92,6 +92,23 @@ def _check_metric_dict(metric_dict, status_types):
                     for s, isnan in zip(status_types, np.isnan(vals))])
 
 
+def test_extract_results_from_run_history():
+    # test the raise error for the `status_msg is None`
+    run_history = RunHistory()
+    cs = ConfigurationSpace()
+    config = Configuration(cs, {})
+    run_history.add(
+        config=config,
+        cost=0.0,
+        time=1.0,
+        status=StatusType.CAPPED,
+    )
+    with pytest.raises(ValueError) as excinfo:
+        SearchResults(metric=accuracy, scoring_functions=[], run_history=run_history)
+
+        assert excinfo._excinfo[0] == ValueError
+
+
 def test_search_results_sprint_statistics():
     api = BaseTask()
     for method in ['get_search_results', 'sprint_statistics', 'get_incumbent_results']: