refactor: enforce market data quality contracts

tests/test_governance_registries.py

@@ -22,6 +22,7 @@ class GovernanceRegistryTests(unittest.TestCase):
         self.pages = load("pages.config.json")
         self.api = load("api.config.json")
         self.data = load("data-fields.config.json")
+        self.quality = load("data-quality.config.json")
 
     def test_features_are_unique_and_use_declared_roles(self) -> None:
         roles = set(self.features["roles"])
@@ -82,6 +83,15 @@ class GovernanceRegistryTests(unittest.TestCase):
                 self.assertEqual(dataset["usage"], "blocked")
         self.assertEqual(len(ids), len(set(ids)))
 
+    def test_every_dataset_has_one_quality_rule_and_known_unit_profile(self) -> None:
+        dataset_ids = {item["id"] for item in self.data["datasets"]}
+        rules = self.quality["datasets"]
+        self.assertEqual(set(rules), dataset_ids)
+        profiles = set(self.quality["unit_profiles"])
+        self.assertTrue(
+            all(str(rule.get("unit_profile") or "none") in profiles for rule in rules.values())
+        )
+
 
 if __name__ == "__main__":
     unittest.main()