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vllm-omni/tests/e2e/online_serving/test_breeze_tts_2.py
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2026-09-14 09:55:53 -07:00

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Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
"""
E2E Online tests for Breeze-TTS-2 with text input and audio output.
These tests verify the /v1/audio/speech endpoint works correctly with
actual model inference, not mocks. Breeze-TTS-2 plain mode needs only
``input`` and a speaker tag (``voice`` defaults to ``S0``); reference
cloning requires ``ref_audio`` + ``ref_text`` and is not exercised here.
"""
import os
os.environ["VLLM_WORKER_MULTIPROC_METHOD"] = "spawn"
import pytest
from tests.helpers.mark import hardware_test
from tests.helpers.runtime import OmniServerParams
from tests.helpers.stage_config import get_deploy_config_path
MODEL = "BreezeBlue/Breeze-TTS-2"
DEFAULT_AUDIO_SPEECH_TIMEOUT_S = 300.0
MAX_CONCURRENT = 4
# ~0.5 s of 24 kHz mono PCM_16 in WAV (~24k payload + header).
_MIN_AUDIO_BYTES = 40_000
def get_prompt(prompt_type="text"):
"""English prompt for zero-shot TTS."""
prompts = {
"text": "The weather is nice today, perfect for a walk in the park.",
}
return prompts.get(prompt_type, prompts["text"])
tts_server_params = [
pytest.param(
OmniServerParams(
model=MODEL,
stage_config_path=get_deploy_config_path("breeze_tts_2.yaml"),
server_args=["--trust-remote-code", "--disable-log-stats"],
),
id="breeze_tts_2",
)
]
@pytest.mark.slow
@pytest.mark.tts
@hardware_test(res={"cuda": "L4"}, num_cards=1)
@pytest.mark.parametrize("omni_server", tts_server_params, indirect=True)
def test_text_to_audio_001(omni_server, online_client) -> None:
"""
Test plain text-to-audio via OpenAI API.
Deploy Setting: breeze_tts_2.yaml
Input Modal: text
Output Modal: audio
Input Setting: stream=False
Datasets: few requests (max_num_seqs=8)
"""
request_config = {
"model": omni_server.model,
"input": get_prompt(),
"stream": False,
"timeout": DEFAULT_AUDIO_SPEECH_TIMEOUT_S,
"response_format": "wav",
"voice": "S0",
"sample_rate": 24000,
"min_audio_bytes": _MIN_AUDIO_BYTES,
}
online_client.send_audio_speech_request(request_config, request_num=MAX_CONCURRENT)
@pytest.mark.slow
@pytest.mark.tts
@hardware_test(res={"cuda": "L4"}, num_cards=1)
@pytest.mark.parametrize("omni_server", tts_server_params, indirect=True)
def test_text_to_audio_002(omni_server, online_client) -> None:
"""
Test streaming text-to-audio via OpenAI API (async-chunk SSE deltas).
Deploy Setting: breeze_tts_2.yaml
Input Modal: text
Output Modal: audio
Input Setting: stream=True
Datasets: single request
"""
request_config = {
"model": omni_server.model,
"input": get_prompt(),
"stream": True,
"stream_format": "audio",
"timeout": DEFAULT_AUDIO_SPEECH_TIMEOUT_S,
"response_format": "wav",
"voice": "S0",
"sample_rate": 24000,
"min_audio_bytes": _MIN_AUDIO_BYTES,
}
online_client.send_audio_speech_request(request_config)