"""The party-ceiling roof reclassify corrects only the mis-read rows, to the
guard's member, and is idempotent (#1376)."""

from __future__ import annotations

from scripts.reclassify_party_ceiling_roofs import party_ceiling_corrections


def test_only_misclassified_party_ceiling_rows_are_corrected() -> None:
    # Arrange — a party ceiling mis-read as an external pitched roof (the bug),
    # one already on the correct member, and a genuine pitched roof.
    stored = [
        ("another dwelling above: 100mm", "Pitched, 100 mm loft insulation"),
        ("another dwelling above: unknown", "(another dwelling above)"),
        ("pitched, normal loft access: 150mm", "Pitched, 150 mm loft insulation"),
    ]

    # Act
    corrections = party_ceiling_corrections(stored)

    # Assert — only the mis-read party ceiling is corrected, to its member value;
    # the already-correct row and the genuine pitched roof are left alone.
    assert corrections == {
        "another dwelling above: 100mm": "(another dwelling above)"
    }


def test_already_corrected_data_yields_no_further_corrections() -> None:
    # Arrange — a re-run over data the first pass already fixed.
    stored = [("another dwelling above: 100mm", "(another dwelling above)")]

    # Act / Assert — idempotent: nothing left to change.
    assert party_ceiling_corrections(stored) == {}