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The existing golden test compares calc PE/CO2 against the integer-rounded
lodged register values (energy_consumption_current / co2_emissions_current),
which conflates real calculator gaps with register rounding. This adds a
parallel pin against each cert's Elmhurst dr87 worksheet (286)/(272) at full
precision — a clean calculator-vs-Elmhurst signal for the 47 worksheet-backed
certs (9 ASHP + 38 cohort-2).
Findings at capture (calc − worksheet, on the worksheet's own decimal TFA):
- 37/47 exact on both PE (<0.05 kWh/m²) and CO2 (<0.02 kg).
- 10 higher-consumption gas certs carry PE +0.5..+1.5 kWh/m² AND
CO2 -0.5..-1.1 kg simultaneously. PE-over + CO2-under on the same
certs is the fingerprint of a small gas→electricity fuel-split
difference (elec PE 1.51 > gas 1.13, but elec CO2 0.136 < gas 0.21),
not a factor-value error — next slice candidate.
An earlier "41/47 PE gaps" reading was a JSON-integer-TFA division artifact;
comparing on the worksheet's decimal TFA (which the calculator also uses)
collapses it to the real 10. Worksheet values frozen as literals (the dr87
PDFs are untracked, so not parsed at test time) per the worksheet_unrounded_sap
convention. Also replaced a pre-existing pytest.approx with abs-diff to keep
the file at zero pyright errors (feedback_abs_diff_over_pytest_approx).
106 passed (was 59); pyright 0 errors.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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| .. | ||
| fixtures/golden | ||
| __init__.py | ||
| test_cert_to_inputs.py | ||
| test_golden_fixtures.py | ||