"""Detector tests (SPECIFICATION §6). Detector implementations land in Phase 1."""

from datetime import datetime, timezone

from opcda_diagnozer.monitor.detectors import PollOutcome
from opcda_diagnozer.opc.base import ReadResult


def test_poll_outcome_holds_one_cycle() -> None:
    result = ReadResult(
        tag="Channel1.Device1.Level", value=1.5, quality_raw=0xC0, device_time=None
    )
    outcome = PollOutcome(
        started_at=datetime.now(timezone.utc),
        rtt_ms=12.5,
        results=(result,),
    )
    assert outcome.rtt_ms == 12.5
    assert outcome.error is None
    assert outcome.results[0].tag == "Channel1.Device1.Level"