Version rotated Belgian holdout corpora

backend/tests/test_rotate_belgium_building_holdouts.py

@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+import importlib.util
+from pathlib import Path
+
+import pytest
+
+
+SCRIPT = Path(__file__).parents[2] / "scripts" / "rotate_belgium_building_holdouts.py"
+SPEC = importlib.util.spec_from_file_location("rotate_building_holdouts", SCRIPT)
+assert SPEC and SPEC.loader
+MODULE = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(MODULE)
+
+
+def test_rotated_corpus_version_is_explicit_and_canonical() -> None:
+    assert MODULE.validate_dataset_version("building-be-v31-rotated-holdouts-r1") == (
+        "building-be-v31-rotated-holdouts-r1"
+    )
+    with pytest.raises(ValueError, match="canonical slug"):
+        MODULE.validate_dataset_version("Building BE v31")