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vllm-omni/tests/entrypoints/duplex/test_runtime_control_redaction.py
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2026-09-05 08:20:21 +00:00

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Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
"""Regression tests for duplex ``runtime_control`` payload redaction.
The redacted result is emitted on the WebSocket (for example
``session.created.runtime_control``), so it must always survive
``json.dumps``. Control results carry typed values straight from the engine --
``fence`` and ``accepted_fence`` are ``DuplexFence`` instances added by
``DuplexControlClient.execute`` -- which previously reached
``WebSocket.send_json`` unconverted and killed the session at handshake.
"""
from __future__ import annotations
import json
from dataclasses import dataclass
from enum import Enum
import pytest
from vllm_omni.engine.duplex.messages import DuplexFence
from vllm_omni.entrypoints.duplex.runtime_bridge import NativeRuntimeBridgeMixin
pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
_redact = NativeRuntimeBridgeMixin._redact_runtime_control_result
def _control_result() -> dict[str, object]:
"""The shape ``DuplexControlClient.execute`` returns for an open."""
return {
"ok": True,
"operation": "open",
"session_id": "sess-1",
"fence": DuplexFence("sess-1", epoch=0, turn_id=0, response_seq=0, incarnation=0),
"accepted_fence": DuplexFence("sess-1", epoch=1, turn_id=2, response_seq=3, incarnation=4),
"stage_results": [{"stage_id": -1, "replica_id": -1, "result": {"supported": True}}],
}
def test_redacted_control_result_is_json_serializable() -> None:
"""The whole payload must serialize the way send_json does."""
redacted = _redact(_control_result())
# Must not raise.
json.dumps({"type": "session.created", "runtime_control": redacted})
def test_fences_are_converted_to_plain_dicts() -> None:
redacted = _redact(_control_result())
assert redacted["fence"] == {
"session_id": "sess-1",
"epoch": 0,
"turn_id": 0,
"response_seq": 0,
"incarnation": 0,
}
# Field values are preserved, not just the type.
assert redacted["accepted_fence"]["epoch"] == 1
assert redacted["accepted_fence"]["turn_id"] == 2
assert redacted["accepted_fence"]["response_seq"] == 3
assert redacted["accepted_fence"]["incarnation"] == 4
def test_nested_dataclasses_are_converted() -> None:
"""Fences can appear inside stage results, not only at the top level."""
redacted = _redact(
{
"stage_results": [
{"stage_id": 0, "result": {"fence": DuplexFence("sess-2", epoch=7)}},
]
}
)
json.dumps(redacted)
assert redacted["stage_results"][0]["result"]["fence"]["epoch"] == 7
def test_enums_are_reduced_to_values() -> None:
class _Mode(str, Enum):
APPEND = "append_audio_chunk"
redacted = _redact({"mode": _Mode.APPEND})
json.dumps(redacted)
assert redacted["mode"] == "append_audio_chunk"
def test_redaction_still_drops_heavy_payload_keys() -> None:
"""The pre-existing contract must be preserved."""
redacted = _redact(
{
"ok": True,
"stage_handoff": object(),
"tts_handoff": object(),
"omni_payload": object(),
"tts_hidden_states": object(),
"tts_token_ids": object(),
"traceback": "long trace",
}
)
assert redacted == {"ok": True}
def test_plain_values_pass_through_unchanged() -> None:
payload = {"ok": True, "count": 3, "name": "x", "missing": None, "items": [1, "two"]}
assert _redact(payload) == payload
def test_dataclass_types_are_not_treated_as_instances() -> None:
"""A class object is not a dataclass instance and must not be asdict'd."""
@dataclass
class _Shape:
x: int = 1
assert _redact(_Shape) is _Shape