fix: register yaps2 resources, check data dir refs

tests/test_data_dir_refs.py

@@ -0,0 +1,27 @@
+"""Every data_directories ref names a registered data directory.
+
+yaps2 referenced yaps2-resources, absent from _data_dirs.yml: the pack and
+verify only said "not cached" and refresh_data_dirs had nothing to fetch.
+"""
+
+from __future__ import annotations
+
+import sys
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(REPO_ROOT / "scripts"))
+
+
+class DataDirRefsAreRegistered(unittest.TestCase):
+    def test_no_unknown_ref(self):
+        try:
+            import validate_schemas
+        except ImportError as exc:
+            self.skipTest(f"validate_schemas needs jsonschema: {exc}")
+        self.assertEqual(validate_schemas._unknown_data_dir_refs(), [])
+
+
+if __name__ == "__main__":
+    unittest.main()