import json
from pathlib import Path

from scripts.evaluate_yolo_checkpoint_matrix import dataset_overlap_evidence


def test_dataset_overlap_evidence_marks_repeated_validation_rows(
    tmp_path: Path,
) -> None:
    dataset_yaml = tmp_path / "dataset.yaml"
    dataset_yaml.write_text("path: .\nval: images/val\n", encoding="utf-8")
    (tmp_path / "yolo_tile_dataset_summary.json").write_text(
        json.dumps({"tile_size": 512, "stride": 256}), encoding="utf-8"
    )

    evidence = dataset_overlap_evidence(dataset_yaml)

    assert evidence["status"] == "overlapping"
    assert evidence["overlap_pixels"] == 256
    assert evidence["validation_rows_independent"] is False


def test_dataset_overlap_evidence_is_explicit_when_summary_missing(
    tmp_path: Path,
) -> None:
    evidence = dataset_overlap_evidence(tmp_path / "dataset.yaml")

    assert evidence["status"] == "unavailable"
    assert evidence["validation_rows_independent"] is None