Complete G7 reciprocal canon interfaces and source-review evidence

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a070b5-4994-7271-bd8b-7c3dbcedec4b

tools/test_interfaces.py

@@ -0,0 +1,60 @@
+"""Regression checks for G7 rejection paths; run beside the three canon checkouts."""
+from pathlib import Path
+import unittest
+from unittest.mock import patch
+
+import yaml
+import jsonschema
+
+from validate_interfaces import validate
+
+WORKSPACE = Path(__file__).resolve().parents[2]
+READ_TEXT = Path.read_text
+
+
+class InterfaceGateTests(unittest.TestCase):
+    def reject_card(self, repo, mutate, message, error=ValueError):
+        suffix = 'canon/interfaces/federation.yaml' if repo == 'the-custodian' else 'infospace/interfaces/federation.yaml'
+        target = WORKSPACE / repo / suffix
+
+        def read(path, *args, **kwargs):
+            content = READ_TEXT(path, *args, **kwargs)
+            if path == target:
+                card = yaml.safe_load(content)
+                mutate(card)
+                return yaml.safe_dump(card)
+            return content
+
+        with patch.object(Path, 'read_text', read):
+            with self.assertRaisesRegex(error, message):
+                validate(WORKSPACE)
+
+    def test_missing_reciprocal_peer_is_rejected(self):
+        self.reject_card('info-tech-canon', lambda c: c['peers'].pop(), 'peer coverage')
+
+    def test_duplicate_evidence_owner_is_rejected(self):
+        self.reject_card('commerce-canon', lambda c: c['exports'][0]['concepts'].append('Evidence'),
+                         'Duplicate domain owner: Evidence')
+
+    def test_family_model_promotion_is_rejected(self):
+        def promote(card):
+            entry = next(e for e in card['exports'] if e['artifact'] == 'family-area')
+            entry['kind'] = 'domain-model'
+        self.reject_card('info-tech-canon', promote, 'Family promoted')
+
+    def test_custodian_domain_claim_is_rejected(self):
+        self.reject_card('the-custodian', lambda c: c['exports'][0]['concepts'].append('Evidence'),
+                         'Governance claims domain semantics')
+
+    def test_invalid_schema_shape_is_rejected(self):
+        self.reject_card('info-tech-canon', lambda c: c.update(consumer={'repo': 'info-tech-canon'}),
+                         "is not of type 'string'", jsonschema.ValidationError)
+
+    def test_import_exceeding_export_is_rejected(self):
+        def extend(card):
+            card['imports'][1]['concepts'].append('Undeclared concept')
+        self.reject_card('commerce-canon', extend, 'Import exceeds export')
+
+
+if __name__ == '__main__':
+    unittest.main()