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EpcSimulation is the Simulation Overlay — a narrow all-optional partial mirror of EpcPropertyData/SapBuildingPart (wall surface first), targeting building parts by BuildingPartIdentifier (composition, not inheritance). apply_simulations(baseline, simulations) deep-copies the baseline, folds overlays in order (later wins on a shared field) via a generic non-None field write, and returns a throwaway EpcPropertyData for the calculator; the baseline is never mutated. Four behaviour tests (hand-built EPD from the 000490 fixture, no PDF): targeted-write-leaves-others-untouched, empty-overlay no-op, sequential last-wins, baseline-immutability. pyright strict clean. Slice 1 of the Modelling stage rebuild (ADR-0016). Closes #1153. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
101 lines
2.9 KiB
Python
101 lines
2.9 KiB
Python
"""Behaviour of the Overlay Applicator: folding Simulation Overlays
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(EpcSimulation) onto a baseline EpcPropertyData to produce a new one for
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the calculator. See ADR-0016 and the Modelling glossary in CONTEXT.md.
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"""
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from datatypes.epc.domain.epc_property_data import (
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BuildingPartIdentifier,
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EpcPropertyData,
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SapBuildingPart,
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)
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from domain.modelling.simulation import BuildingPartOverlay, EpcSimulation
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from domain.modelling.overlay_applicator import apply_simulations
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from tests.domain.sap10_calculator.worksheet._elmhurst_worksheet_000490 import (
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build_epc,
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)
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def _part(epc: EpcPropertyData, identifier: BuildingPartIdentifier) -> SapBuildingPart:
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return next(p for p in epc.sap_building_parts if p.identifier is identifier)
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def test_apply_writes_targeted_building_part_and_leaves_others_untouched() -> None:
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# Arrange
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baseline: EpcPropertyData = build_epc()
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extension_before: int | str = _part(
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baseline, BuildingPartIdentifier.EXTENSION_1
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).wall_insulation_type
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simulation = EpcSimulation(
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building_parts={
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BuildingPartIdentifier.MAIN: BuildingPartOverlay(wall_insulation_type=1)
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}
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)
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# Act
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result: EpcPropertyData = apply_simulations(baseline, [simulation])
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# Assert
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assert _part(result, BuildingPartIdentifier.MAIN).wall_insulation_type == 1
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assert (
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_part(result, BuildingPartIdentifier.EXTENSION_1).wall_insulation_type
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== extension_before
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)
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def test_empty_simulation_is_a_no_op() -> None:
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# Arrange
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baseline: EpcPropertyData = build_epc()
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# Act
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result: EpcPropertyData = apply_simulations(baseline, [EpcSimulation()])
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# Assert
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assert result == baseline
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def test_later_simulation_wins_on_a_shared_field() -> None:
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# Arrange
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baseline: EpcPropertyData = build_epc()
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first = EpcSimulation(
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building_parts={
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BuildingPartIdentifier.MAIN: BuildingPartOverlay(wall_insulation_type=1)
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}
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)
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second = EpcSimulation(
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building_parts={
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BuildingPartIdentifier.MAIN: BuildingPartOverlay(wall_insulation_type=2)
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}
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)
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# Act
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result: EpcPropertyData = apply_simulations(baseline, [first, second])
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# Assert
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assert _part(result, BuildingPartIdentifier.MAIN).wall_insulation_type == 2
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def test_baseline_is_not_mutated() -> None:
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# Arrange
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baseline: EpcPropertyData = build_epc()
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original: int | str = _part(
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baseline, BuildingPartIdentifier.MAIN
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).wall_insulation_type
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# Act
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_: EpcPropertyData = apply_simulations(
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baseline,
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[
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EpcSimulation(
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building_parts={
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BuildingPartIdentifier.MAIN: BuildingPartOverlay(
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wall_insulation_type=1
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)
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}
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)
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],
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)
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# Assert
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assert (
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_part(baseline, BuildingPartIdentifier.MAIN).wall_insulation_type == original
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)
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