feat: add Quant OS A-share baseline

tests/test_mock_parity_report.py

@@ -0,0 +1,35 @@
+import json
+import tempfile
+import unittest
+from pathlib import Path
+
+from tools.export_mock_parity import verify_report, write_report
+
+
+class MockParityReportTests(unittest.TestCase):
+    def test_report_is_deterministic_and_explicitly_not_platform_evidence(self):
+        with tempfile.TemporaryDirectory() as directory:
+            first = Path(directory) / "first.json"
+            second = Path(directory) / "second.json"
+            report = write_report(first)
+            write_report(second)
+            self.assertEqual(first.read_bytes(), second.read_bytes())
+            self.assertTrue(report["comparisons"]["whole_plan_exact"])
+            self.assertEqual(report["evidence_class"], "mock_contract_only")
+            self.assertFalse(report["real_platform_pass"])
+            self.assertEqual(report["gate_credit"], [])
+            self.assertTrue(verify_report(first)["ok"])
+
+    def test_tampering_is_rejected(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "report.json"
+            write_report(path)
+            report = json.loads(path.read_text(encoding="utf-8"))
+            report["comparisons"]["whole_plan_exact"] = False
+            path.write_text(json.dumps(report), encoding="utf-8")
+            with self.assertRaisesRegex(ValueError, "hash mismatch"):
+                verify_report(path)
+
+
+if __name__ == "__main__":
+    unittest.main()