audit YOLO geometry and overlapping validation rows

tests/test_evaluate_yolo_checkpoint_matrix.py

@@ -0,0 +1,29 @@
+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