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Remap the EPC hot-water arrangement from a landlord override 🟩

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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jun-te Kim 2026-06-19 14:04:33 +00:00
parent 805dfc70a2
commit b5ef41ea62
1 changed files with 18 additions and 0 deletions
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18
tests/domain/epc/test_water_heating_overlay.py
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@ -11,6 +11,10 @@ import pytest
from domain.epc.property_overlays.water_heating_overlay import (
water_heating_overlay_for,
)
from domain.modelling.scoring.overlay_applicator import apply_simulations
from tests.domain.sap10_calculator.worksheet._elmhurst_worksheet_000490 import (
build_epc,
)
def test_from_main_system_mains_gas_overlays_water_heating() -> None:
@ -53,3 +57,17 @@ def test_unresolvable_water_heating_produces_no_overlay(
# Assert
assert simulation is None
def test_water_heating_override_remaps_the_hot_water_arrangement() -> None:
# Arrange — landlord correction: HW is a separate electric immersion.
baseline = build_epc()
overlay = water_heating_overlay_for("Electric immersion, electricity", 0)
assert overlay is not None
# Act
result = apply_simulations(baseline, [overlay])
# Assert — the calculator reads these off sap_heating.
assert result.sap_heating.water_heating_code == 903
assert result.sap_heating.water_heating_fuel == 29