"""Tests for the shared findings/report type (build order step 1)."""
from llm_ingestion_guard.report import Finding, Report, Severity, Source, severity_rank


def test_finding_defaults():
    f = Finding(
        label="override:ignore-previous",
        severity=Severity.CRITICAL,
        source=Source.INPUT,
        detector="lexicon",
    )
    assert f.count == 1
    assert f.offset is None
    assert f.evidence is None
    assert f.severity is Severity.CRITICAL
    assert f.source is Source.INPUT


def test_finding_is_frozen():
    f = Finding(label="x", severity=Severity.LOW, source=Source.OUTPUT, detector="d")
    try:
        f.label = "y"  # type: ignore[misc]
    except Exception:
        return
    raise AssertionError("Finding must be immutable (frozen)")


def test_report_empty():
    r = Report()
    assert r.found is False
    assert r.max_severity() is None
    assert r.counts()[Severity.CRITICAL] == 0


def test_report_found_and_max_severity():
    r = Report()
    r.add(Finding(label="a", severity=Severity.LOW, source=Source.INPUT, detector="d"))
    r.add(Finding(label="b", severity=Severity.CRITICAL, source=Source.INPUT, detector="d"))
    r.add(Finding(label="c", severity=Severity.HIGH, source=Source.INPUT, detector="d"))
    assert r.found is True
    assert r.max_severity() is Severity.CRITICAL


def test_report_counts():
    r = Report()
    r.extend([
        Finding(label="a", severity=Severity.HIGH, source=Source.INPUT, detector="d"),
        Finding(label="b", severity=Severity.HIGH, source=Source.INPUT, detector="d"),
        Finding(label="c", severity=Severity.LOW, source=Source.OUTPUT, detector="d"),
    ])
    counts = r.counts()
    assert counts[Severity.HIGH] == 2
    assert counts[Severity.LOW] == 1
    assert counts[Severity.CRITICAL] == 0


def test_severity_rank_ordering():
    assert severity_rank(Severity.CRITICAL) > severity_rank(Severity.HIGH)
    assert severity_rank(Severity.HIGH) > severity_rank(Severity.MEDIUM)
    assert severity_rank(Severity.MEDIUM) > severity_rank(Severity.LOW)
    assert severity_rank(Severity.LOW) > severity_rank(Severity.INFO)