[Model] Integrate AURA into Full-Duplex Runtime (#7633)

tests/engine/duplex/test_session_runner_ephemeral_bind.py

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: Apache-2.0
+"""Ephemeral Stage0 bind uses r.stage0-turn{N}, not resumable r.stage0."""
+
+from __future__ import annotations
+
+from vllm_omni.engine.duplex.contracts import (
+    DuplexFence,
+    duplex_ephemeral_stage_request_id,
+    duplex_resource_request_id,
+)
+from vllm_omni.engine.duplex.session.manager import DuplexSessionManager
+
+
+def test_stage0_request_id_ephemeral_when_not_resumable() -> None:
+    fence = DuplexFence("duplex-test", epoch=0, turn_id=3)
+    rid = DuplexSessionManager.stage_request_id(fence, stage_id=0, resumable=False)
+    expected = duplex_ephemeral_stage_request_id(fence, stage_id=0)
+    assert rid == expected
+    assert rid.endswith(".r.stage0-turn3")
+    assert not rid.endswith(".r.stage0")
+
+
+def test_stage0_request_id_resumable_keeps_stable_role() -> None:
+    fence = DuplexFence("duplex-test", epoch=1, turn_id=3)
+    rid = DuplexSessionManager.stage_request_id(fence, stage_id=0, resumable=True)
+    expected = duplex_resource_request_id(fence, "stage0")
+    assert rid == expected
+    assert rid.endswith(".r.stage0")