added some basic lighting tests

recommendations/tests/test_lighting_recommendations.py

@@ -0,0 +1,47 @@
+import pytest
+from unittest.mock import Mock
+from backend.Property import Property
+from recommendations.LightingRecommendations import LightingRecommendations
+
+from recommendations.tests.test_data.materials import materials
+
+
+class TestLightingRecommendations:
+
+    def test_init_invalid_materials(self):
+        input_property0 = Property(id=1, postcode="F4k3 6", address1="623 fake street", epc_client=Mock())
+        input_property0.lighting = {"low_energy_proportion": 0}
+        input_property0.data = {"county": "Greater London Authority"}
+        # Test for invalid materials
+        with pytest.raises(ValueError):
+            LightingRecommendations(input_property0, [])
+
+    def test_recommend_no_action_needed(self):
+        # Case where no recommendation is needed
+        input_property1 = Property(id=1, postcode="F4k3 6", address1="623 fake street", epc_client=Mock())
+        input_property1.lighting = {"low_energy_proportion": 100}
+        input_property1.data = {"county": "Greater London Authority"}
+
+        lr = LightingRecommendations(input_property1, materials)
+        lr.recommend()
+        assert lr.recommendation == []
+
+    def test_recommend_action_needed(self):
+        # Case where recommendation is needed
+        input_property1 = Property(id=1, postcode="F4k3 6", address1="623 fake street", epc_client=Mock())
+        input_property1.lighting = {"low_energy_proportion": 100}
+        input_property1.data = {"county": "Greater London Authority"}
+        input_property1.lighting = {"low_energy_proportion": 0.80}
+        input_property1.number_lighting_outlets = 20
+
+        lr = LightingRecommendations(input_property1, materials)
+        lr.recommend()
+        assert len(lr.recommendation) == 1
+
+        assert lr.recommendation == [
+            {'parts': [], 'type': 'low_energy_lighting', 'description': 'Install low energy lighting in 4 outlets',
+             'starting_u_value': None, 'new_u_value': None, 'sap_points': 0.4, 'total': 458.976, 'subtotal': 382.48,
+             'vat': 76.49600000000001, 'contingency': 27.320000000000007, 'preliminaries': 27.320000000000007,
+             'material': 80.0, 'profit': 54.640000000000015, 'labour_hours': 3.2, 'labour_days': 0.4,
+             'labour_cost': 193.20000000000002}
+        ]