test: add ESP-001 real commit gate bridge test

Author: LalaSkye

enterprise-execution-readiness/tests/test_esp_001_real_gate_bridge.py

@@ -0,0 +1,51 @@
+"""
+ESP-001 real CommitGate bridge test.
+
+This remains synthetic and in-memory, but it calls commit_gate_core.gate.CommitGate
+through enterprise-execution-readiness/adapters/commit_gate_bridge.py.
+
+It proves that the real CommitGate returns DENY:NO_DECISION_RECORD before the
+mocked email adapter can be called.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+ADAPTER_PATH = ROOT / "adapters" / "mock_email_adapter.py"
+BRIDGE_PATH = ROOT / "adapters" / "commit_gate_bridge.py"
+
+adapter_spec = importlib.util.spec_from_file_location("mock_email_adapter", ADAPTER_PATH)
+mock_email_adapter = importlib.util.module_from_spec(adapter_spec)
+assert adapter_spec.loader is not None
+adapter_spec.loader.exec_module(mock_email_adapter)
+MockEmailAdapter = mock_email_adapter.MockEmailAdapter
+
+bridge_spec = importlib.util.spec_from_file_location("commit_gate_bridge", BRIDGE_PATH)
+commit_gate_bridge = importlib.util.module_from_spec(bridge_spec)
+assert bridge_spec.loader is not None
+bridge_spec.loader.exec_module(commit_gate_bridge)
+dispatch_esp001_through_real_gate = commit_gate_bridge.dispatch_esp001_through_real_gate
+
+
+def test_real_commit_gate_missing_decision_record_blocks_mock_email_send() -> None:
+    adapter = MockEmailAdapter()
+
+    result = dispatch_esp001_through_real_gate(adapter)
+
+    assert result.gate_result.allowed is False
+    assert result.gate_result.code == "DENY:NO_DECISION_RECORD"
+    assert result.downstream_send is False
+    assert result.send_call_count == 0
+    assert adapter.sent_messages == []
+    assert result.receipt_written is True
+    assert len(result.audit_events) == 1
+
+    audit_event = result.audit_events[0]
+    assert audit_event["event_type"] == "GATE_EVALUATION"
+    assert audit_event["allowed"] is False
+    assert audit_event["code"] == "DENY:NO_DECISION_RECORD"
+    assert audit_event["attempted"]["action"] == "SEND_EXTERNAL_EMAIL"