Check instances

tests/test_workflows.py

@@ -8,6 +8,8 @@ from simstadt import (
     greenwater_simulation,
     heatdemand_simulation,
     photovoltaic_simulation,
+    HeatDemandResults,
+    PhotovoltaicResults,
 )
 from simstadt.results import KPI
 
@@ -36,6 +38,7 @@ def test_pv_no_shadow(simstadt_folder):
     assert "PV potential yield" in kpis
     assert "Roof area for PV" in kpis
     assert abs(kpis["PV specific yield"].value - 1_100) < 200
+    assert isinstance(results, PhotovoltaicResults)
 
 
 @pytest.mark.integration
@@ -171,6 +174,7 @@ def test_heatdemand_heating_and_cooling(simstadt_folder):
     assert "Yearly Heating demand" in kpis
     assert "Yearly Cooling demand" in kpis
     assert kpis["Year of construction"].value > 1900
+    assert isinstance(results, HeatDemandResults)
 
 
 @pytest.mark.integration