feat(gateway): Basic256Sha256 + channel>session lifetime (1879)

tests/unit/connection/test_security.py

@@ -0,0 +1,18 @@
+from unittest.mock import AsyncMock, MagicMock
+
+import pytest
+
+from ingestor.connection.security import SESSION_TIMEOUT_MS, apply_security
+
+
+@pytest.mark.asyncio
+async def test_apply_security_sets_sha256_and_channel_lifetime():
+    client = MagicMock()
+    client.set_security = AsyncMock()
+    await apply_security(client, 'urn:x', 'c.pem', 'k.pem', None)
+    assert client.session_timeout == SESSION_TIMEOUT_MS
+    assert client.secure_channel_timeout == int(SESSION_TIMEOUT_MS * 1.25)
+    args, kwargs = client.set_security.call_args
+    from asyncua.crypto.security_policies import SecurityPolicyBasic256Sha256
+
+    assert args[0] is SecurityPolicyBasic256Sha256