Test: guard Track D business schema shims

tests/test_trackd_business_schema_shim_smoke.py

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+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+import scripts._business_schema as shim
+from pystatsv1.trackd._errors import TrackDSchemaError
+from pystatsv1.trackd import schema as trackd_schema
+
+
+def test_business_schema_shim_exports_trackd_schema() -> None:
+    # The shim should re-export the package implementation (same function objects).
+    assert shim.validate_schema is trackd_schema.validate_schema
+    assert shim.assert_schema is trackd_schema.assert_schema
+
+
+def test_business_schema_shim_validate_schema_report_shape(tmp_path: Path) -> None:
+    report = shim.validate_schema(tmp_path, dataset=trackd_schema.DATASET_NSO_V1)
+
+    assert isinstance(report, dict)
+    assert report["ok"] is False
+    assert "missing_tables" in report
+    assert "tables" in report
+
+
+def test_business_schema_shim_assert_schema_is_friendly(tmp_path: Path) -> None:
+    with pytest.raises(TrackDSchemaError) as ei:
+        shim.assert_schema(tmp_path, dataset=trackd_schema.DATASET_NSO_V1)
+
+    msg = str(ei.value)
+    assert "Track D dataset schema check failed" in msg
+    assert "Missing CSV files" in msg
+
+
+def test_track_d_template_business_schema_is_a_shim() -> None:
+    root = Path(__file__).resolve().parents[1]
+    template = root / "workbooks" / "track_d_template" / "scripts" / "_business_schema.py"
+    assert template.exists()
+
+    text = template.read_text(encoding="utf-8")
+    assert "pystatsv1.trackd.schema" in text
+    assert "validate_schema" in text
+    assert "assert_schema" in text