from __future__ import annotations

from app.hardware import _select_trigger_candidate_index


def test_select_trigger_candidate_by_unique_trigger_code() -> None:
    candidates = [
        ("DELL U2720Q", 60),
        ("Generic PnP Monitor", 19),
    ]
    assert _select_trigger_candidate_index(candidates) == 1


def test_select_trigger_candidate_by_generic_tiebreaker() -> None:
    candidates = [
        ("DELL U2720Q", 15),
        ("Generic PnP Monitor", 19),
    ]
    assert _select_trigger_candidate_index(candidates) == 1


def test_select_trigger_candidate_none_when_still_ambiguous() -> None:
    candidates = [
        ("Generic PnP Monitor #1", 15),
        ("Generic PnP Monitor #2", 19),
    ]
    assert _select_trigger_candidate_index(candidates) is None