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311 lines
15 KiB
Python
311 lines
15 KiB
Python
from recommendations.Costs import Costs
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from unittest.mock import Mock
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import datetime
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import pytest
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class TestCosts:
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def test_cavity_wall_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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cwi_material = {
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"description": "cwi",
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"depth": 75,
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"thermal_conductivity": 0.037,
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"total_cost": 14,
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"labour_hours_per_unit": 0.065,
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"is_installer_quote": True
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}
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cwi_results = costs.cavity_wall_insulation(
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wall_area=95.9104281347967,
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material=cwi_material,
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)
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assert cwi_results == {'total': 1342.7459938871539, 'labour_hours': 8, 'labour_days': 1}
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def test_loft_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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loft_material = {
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"description": "Crown Loft Roll 44 glass fibre roll",
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"depth": 270,
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"thermal_conductivity": 0.044,
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"total_cost": 11,
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"labour_hours_per_unit": 0.11,
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"is_installer_quote": True,
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}
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loft_results = costs.loft_and_flat_insulation(
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floor_area=33.5,
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material=loft_material,
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)
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assert loft_results == {'total': 368.5, 'labour_hours': 8, 'labour_days': 1}
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def test_internal_wall_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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iwi_material = {
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"type": "internal_wall_insulation",
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"description": "Ecotherm Eco-Versal PIR Insulation Board",
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"depth": 150,
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"depth_unit": "mm",
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"cost_unit": "gbp_per_m2",
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"thermal_conductivity": 0.022,
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"thermal_conductivity_unit": "watt_per_meter_kelvin",
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"labour_hours_per_unit": 0.18,
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"total_cost": 200,
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"link": "link",
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"is_installer_quote": True
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}
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iwi_results = costs.solid_wall_insulation(
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wall_area=95.9104281347967,
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material=iwi_material,
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)
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assert iwi_results == {
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'total': 19182.085626959342, 'labour_hours': 17.263877064263404, 'labour_days': 0.5394961582582314
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}
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def test_suspended_floor_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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sus_floor_material = {
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'type': 'suspended_floor_insulation', 'description': 'Thermafleece CosyWool Roll',
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'depth': 140.0,
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'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.039,
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'thermal_conductivity_unit': 'watt_per_meter_kelvin', 'prime_material_cost': 0,
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'material_cost': 11.68, 'labour_cost': 1.78, 'labour_hours_per_unit': 0.1,
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'plant_cost': 0,
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'total_cost': 13.46, 'link': 'SPONs',
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'Notes': 'Spons did not contain labour costs so we use values for similar insulations. '
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'We use the '
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'same values as in Crown loft roll 44, since it is also an insulation roll',
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"is_installer_quote": False
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}
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sus_floor_non_insulation_materials = [
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{'type': 'suspended_floor_demolition', 'description': 'Removal of carpet and underfelt', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 3.32, 'labour_hours_per_unit': 0.11,
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'plant_cost': 0, 'total_cost': 3.32, 'link': 'SPONs',
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'Notes': 'We ignore the plant cost that is in SPONs because we assume the carpet is not scrapped and '
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'therefore there is no need for a skip'},
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{'type': 'suspended_floor_demolition',
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'description': 'Remove boarding; withdraw nails; set aside for reuse; ground level', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 9.34, 'labour_hours_per_unit': 0.3,
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'plant_cost': 0, 'total_cost': 9.34, 'link': 'SPONs', 'Notes': 0},
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{'type': 'suspended_floor_vapour_barrier', 'description': 'Visqueen High Performance Vapour Barrier',
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'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
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'thermal_conductivity_unit': 0, 'prime_material_cost': 0.58, 'material_cost': 1.21, 'labour_cost': 0.48,
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'labour_hours_per_unit': 0.02, 'plant_cost': 0, 'total_cost': 1.69, 'link': 'SPONs', 'Notes': 0},
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{'type': 'suspended_floor_redecoration', 'description': 'refix floorboards previously set aside',
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'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
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'thermal_conductivity_unit': 0, 'prime_material_cost': 0, 'material_cost': 1.54, 'labour_cost': 24.98,
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'labour_hours_per_unit': 0.74, 'plant_cost': 0, 'total_cost': 26.52, 'link': 'SPONs', 'Notes': 0},
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{'type': 'suspended_floor_redecoration', 'description': 'Fitting carpet', 'depth': 0, 'depth_unit': 0,
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'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 6.59, 'labour_hours_per_unit': 0.37,
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'plant_cost': 0, 'total_cost': 6.59, 'link': 'SPONs',
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'Notes': 'SPONs does not have data on re-fitting the carpet so we use the data in Fitted carpeting; '
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'Gradus woven polypropylene tufted loop\n\n as a baseline. We assume re-use of carpets, '
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'therefore we need just labour rates'}]
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sus_floor_results = costs.suspended_floor_insulation(
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insulation_floor_area=33.5,
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material=sus_floor_material,
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non_insulation_materials=sus_floor_non_insulation_materials
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)
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assert sus_floor_results == {
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'total': 3337.07436, 'subtotal': 2780.8953, 'vat': 556.17906, 'contingency': 370.78604,
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'preliminaries': 185.39302, 'material': 483.405, 'profit': 370.78604, 'labour_hours': 54.940000000000005,
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'labour_days': 2.289166666666667, 'labour_cost': 1370.5252
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}
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def test_solid_floor_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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sol_floor_material = {
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'type': 'solid_floor_insulation', 'description': 'Kay-Cel Expanded Polystyrene Board',
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'depth': 100.0, 'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.033,
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'thermal_conductivity_unit': 'watt_per_meter_kelvin', 'prime_material_cost': 0,
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'material_cost': 12.02, 'labour_cost': 4.4, 'labour_hours_per_unit': 0.19, 'plant_cost': 0,
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'total_cost': 16.42, 'link': 'SPONs', 'Notes': 0, "is_installer_quote": False
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}
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sol_floor_non_insulation_materials = [
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{'type': 'solid_floor_demolition', 'description': 'Removal of carpet and underfelt', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 3.32, 'labour_hours_per_unit': 0.11,
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'plant_cost': 0, 'total_cost': 3.32, 'link': 'SPONs',
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'Notes': 'We ignore the plant cost that is in SPONs because we assume the carpet is not scrapped and '
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'therefore there is no need for a skip'},
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{'type': 'solid_floor_preparation',
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'description': 'clean surface of concrete to receive new damp-proof membrane', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 4.36, 'labour_hours_per_unit': 0.14,
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'plant_cost': 0, 'total_cost': 4.36, 'link': 0, 'Notes': 0}, {
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'type': 'solid_floor_preparation',
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'description': 'Clean out crack to '
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'form a 20mm×20mm '
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'groove and fill with '
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'cement: mortar mixed '
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'with bonding agent',
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'depth': 0, 'depth_unit': 0,
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'cost_unit': 0,
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'thermal_conductivity': 0,
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'thermal_conductivity_unit': 0,
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'prime_material_cost': 0,
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'material_cost': 6.91,
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'labour_cost': 18.99,
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'labour_hours_per_unit': 0.61,
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'plant_cost': 0.16,
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'total_cost': 26.06, 'link': 0,
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'Notes': 'This step is the '
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'assessment and repair of '
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'any damage to the concrete '
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'floor such as filling '
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'cracks or levelling uneven '
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'areas'},
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{'type': 'solid_floor_vapour_barrier', 'description': 'Visqueen High Performance Vapour Barrier',
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'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
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'thermal_conductivity_unit': 0, 'prime_material_cost': 0.58, 'material_cost': 1.21, 'labour_cost': 0.48,
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'labour_hours_per_unit': 0.02, 'plant_cost': 0, 'total_cost': 1.69, 'link': 'SPONs', 'Notes': 0},
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{'type': 'solid_floor_redecoration',
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'description': 'Screeded beds; protection to compressible formwork exceeding 600mm wide', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 9.6, 'material_cost': 9.89, 'labour_cost': 2.67, 'labour_hours_per_unit': 0.15,
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'plant_cost': 0, 'total_cost': 12.56, 'link': 'SPONs',
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'Notes': 'This is the screed layer, placed on top of the insulation'},
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{'type': 'solid_floor_redecoration', 'description': 'Fitting carpet', 'depth': 0, 'depth_unit': 0,
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'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 6.59, 'labour_hours_per_unit': 0.37,
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'plant_cost': 0, 'total_cost': 6.59, 'link': 'SPONs',
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'Notes': 'SPONs does not have data on re-fitting the carpet so we use the data in Fitted carpeting; '
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'Gradus woven polypropylene tufted loop\n\n as a baseline. We assume re-use of carpets, '
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'therefore we need just labour rates'},
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{'type': 'solid_floor_redecoration',
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'description': 'Fitting existing softwood skirting or architrave to new frames; 150mm high', 'depth': 0,
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'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
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'prime_material_cost': 0, 'material_cost': 0.01, 'labour_cost': 4.87, 'labour_hours_per_unit': 0.12,
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'plant_cost': 0, 'total_cost': 4.88, 'link': 'SPONs', 'Notes': 0}
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]
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sol_floor_results = costs.solid_floor_insulation(
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insulation_floor_area=33.5,
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material=sol_floor_material,
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non_insulation_materials=sol_floor_non_insulation_materials
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)
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assert sol_floor_results == {
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'total': 4245.023520000001, 'subtotal': 3537.5196, 'vat': 707.5039200000001, 'contingency': 471.66928,
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'preliminaries': 235.83464, 'material': 1006.3399999999999, 'profit': 471.66928, 'labour_hours': 57.285,
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'labour_days': 2.386875, 'labour_cost': 1346.6464
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}
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def test_external_wall_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire",
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"property-type": "House",
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"built-form": 'End-Terrace'
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}
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costs = Costs(mock_property)
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ewi_material = {
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'type': 'external_wall_insulation', 'description': 'Ecotherm Eco-Versal PIR Insulation Board',
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'depth': 150.0, 'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.022,
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'thermal_conductivity_unit': 'watt_per_meter_kelvin',
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'labour_hours_per_unit': 1.4,
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'total_cost': 300, 'link': 'SPONs', 'Notes': 0, "is_installer_quote": True
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}
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ewi_results = costs.solid_wall_insulation(
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wall_area=95.9104281347967,
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material=ewi_material,
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)
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assert ewi_results == {
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'total': 28773.12844043901, 'labour_hours': 134.2745993887154, 'labour_days': 4.196081230897356
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}
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def test_flat_roof_insulation(self):
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mock_property = Mock()
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mock_property.data = {
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"county": "Northamptonshire"
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}
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costs = Costs(mock_property)
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flat_roof_material = {
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'id': 1225, 'type': 'flat_roof_insulation',
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'description': 'Kingspan Thermaroof TR21 zero OPD '
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'urethene insulation board',
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'depth': 100.0, 'depth_unit': 'mm', 'cost': None,
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'cost_unit': 'gbp_per_m2', 'r_value_per_mm': 0.04,
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'r_value_unit': 'square_meter_kelvin_per_watt',
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'thermal_conductivity': 0.025,
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'thermal_conductivity_unit': 'watt_per_meter_kelvin',
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'link': 'SPONs',
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'created_at': "now", 'is_active': True,
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'prime_material_cost': None, 'material_cost': 50.95,
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'labour_cost': 10.66, 'labour_hours_per_unit': 0.48,
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'plant_cost': 0.0, 'total_cost': 61.61,
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'notes': "SPONs didn't have a labour hours so we use "
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"0.48 which is similar to other materials",
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"is_installer_quote": False
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}
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flat_roof_floor_results = costs.loft_and_flat_insulation(
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floor_area=33.5,
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material=flat_roof_material,
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)
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assert flat_roof_floor_results == {
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'total': 2063.935, 'subtotal': 1719.9458333333334, 'vat': 343.9891666666665, 'labour_hours': 8,
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'labour_days': 1
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}
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assert costs.labour_adjustment_factor == 0.88
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# Test for different wattages
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@pytest.mark.parametrize("n_panels, expected_cost", [
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(7, 4055.0),
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(10, 4540.0),
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(12, 4863.0),
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(15, 5707.0),
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])
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def test_solar_pv_different_wattages(self, n_panels, expected_cost):
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mock_property = Mock()
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mock_property.data = {"county": "Mansfield"}
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costs = Costs(mock_property)
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result = costs.solar_pv(n_panels)
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assert result['total'] == pytest.approx(expected_cost, rel=0.01)
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