first commit

tests/utils/test_turn_ids.py

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+from __future__ import annotations
+
+import uuid
+from unittest import mock
+
+from app.utils.turn_ids import (
+    clear_started_turn_message_id,
+    next_turn_message_id,
+    peek_started_turn_message_id,
+    register_started_turn_message_id,
+    reset_turn_message_sequence,
+)
+
+
+def test_next_turn_message_id_uses_uuid4() -> None:
+    generated = uuid.UUID("12345678-1234-4234-9234-123456789abc")
+
+    with mock.patch("app.utils.turn_ids.uuid.uuid4", return_value=generated):
+        message_id = next_turn_message_id(
+            {
+                "callIdGed": "GED-555",
+                "protocol_id": "PRT-555",
+                "session_id": "session-555",
+            }
+        )
+
+    assert message_id == "12345678-1234-4234-9234-123456789abc"
+
+
+def test_started_turn_message_id_can_be_registered_peeked_and_cleared() -> None:
+    source = {"session_id": "session-started-turn"}
+    reset_turn_message_sequence(source, clear_pending=True)
+
+    assert peek_started_turn_message_id(source) == ""
+
+    register_started_turn_message_id(source, "message-1")
+    assert peek_started_turn_message_id(source) == "message-1"
+
+    register_started_turn_message_id(source, "message-2")
+    assert peek_started_turn_message_id(source) == "message-2"
+
+    clear_started_turn_message_id(source, "message-1")
+    assert peek_started_turn_message_id(source) == "message-2"
+
+    clear_started_turn_message_id(source, "message-2")
+    assert peek_started_turn_message_id(source) == ""
+
+
+def test_reset_turn_message_sequence_clears_started_turn_message_id() -> None:
+    source = {"session_id": "session-reset-started-turn"}
+    reset_turn_message_sequence(source, clear_pending=True)
+    register_started_turn_message_id(source, "message-to-reset")
+
+    reset_turn_message_sequence(source, clear_pending=True)
+
+    assert peek_started_turn_message_id(source) == ""