test(multiplayer): add release promotion gate

scripts/test_verify_release_gate.py

@@ -0,0 +1,56 @@
+import sys
+import unittest
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+
+from verify_release_gate import validate_release_report
+
+
+def valid_report():
+    return {
+        "release_id": "release-2026-09-01-001",
+        "from_stage": "development",
+        "to_stage": "internal",
+        "slo_passed": True,
+        "security_passed": True,
+        "cost_passed": True,
+        "rollback_rehearsed": True,
+        "playtests": {"eu_passed": True, "na_passed": True},
+        "legacy": {"phase6_passed": True, "enet_passed": True},
+    }
+
+
+class ReleaseGateTest(unittest.TestCase):
+    def test_accepts_one_complete_promotion(self):
+        self.assertEqual(validate_release_report(valid_report()), ("development", "internal"))
+
+    def test_rejects_skipped_stage(self):
+        report = valid_report()
+        report["to_stage"] = "casual"
+        with self.assertRaises(ValueError):
+            validate_release_report(report)
+
+    def test_rejects_missing_or_false_gate(self):
+        report = valid_report()
+        del report["playtests"]["na_passed"]
+        with self.assertRaises(ValueError):
+            validate_release_report(report)
+        report = valid_report()
+        report["cost_passed"] = 1
+        with self.assertRaises(ValueError):
+            validate_release_report(report)
+
+    def test_rejects_unknown_stage_and_blank_release(self):
+        report = valid_report()
+        report["release_id"] = "  "
+        with self.assertRaises(ValueError):
+            validate_release_report(report)
+        report = valid_report()
+        report["from_stage"] = "experimental"
+        with self.assertRaises(ValueError):
+            validate_release_report(report)
+
+
+if __name__ == "__main__":
+    unittest.main()