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Vaulted ND roof on a pre-1950 dwelling gets sloping-ceiling insulation 🟥

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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Khalim Conn-Kowlessar 2026-07-02 10:55:58 +00:00
parent 9e1a194b27
commit 0d465346c9
1 changed files with 28 additions and 0 deletions
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28
tests/domain/modelling/test_roof_recommendation.py
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@ -83,6 +83,34 @@ def test_room_in_roof_yields_no_recommendation_pending_a_dedicated_branch() -> N
assert recommendation is None
def test_vaulted_ceiling_with_nd_thickness_on_pre_1950_dwelling_yields_sloping_ceiling_insulation() -> None:
# Arrange — the 742265 shape (ADR-0047): a "Pitched (vaulted ceiling)" MAIN
# roof lodging the "ND" sentinel on an age-band-B dwelling. ND resolves to
# the age band's as-built state (A-D: uninsulated), and a vaulted ceiling
# has no loft void, so the one applicable Measure is rafter insulation.
baseline: EpcPropertyData = build_epc()
main: SapBuildingPart = _part(baseline, BuildingPartIdentifier.MAIN)
main.roof_construction_type = "Pitched (vaulted ceiling)"
main.roof_insulation_thickness = "ND"
main.construction_age_band = "B"
# Act
recommendation: Recommendation | None = recommend_roof_insulation(
baseline, _StubProducts()
)
# Assert
assert recommendation is not None
assert recommendation.surface == "Roof"
assert len(recommendation.options) == 1
option = recommendation.options[0]
assert option.measure_type == "sloping_ceiling_insulation"
simulated: EpcPropertyData = apply_simulations(baseline, [option.overlay])
assert (
_part(simulated, BuildingPartIdentifier.MAIN).roof_insulation_thickness == 100
)
def test_loft_option_carries_cost_from_roof_area_and_product() -> None:
# Arrange
baseline: EpcPropertyData = build_epc() # MAIN roof area 14.85 m^2