test_audio.py

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project

import json

import openai
import pytest
import pytest_asyncio

from tests.utils import RemoteOpenAIServer
from vllm.assets.audio import AudioAsset
from vllm.multimodal.utils import encode_audio_base64, encode_audio_url, fetch_audio

MODEL_NAME = "fixie-ai/ultravox-v0_5-llama-3_2-1b"
TEST_AUDIO_URLS = [
    AudioAsset("winning_call").url,
    AudioAsset("mary_had_lamb").url,
]
MAXIMUM_AUDIOS = 2


@pytest.fixture(scope="module")
def server():
    args = [
        "--dtype",
        "float32",
        "--max-model-len",
        "2048",
        "--max-num-seqs",
        "5",
        "--enforce-eager",
        "--trust-remote-code",
        "--limit-mm-per-prompt",
        json.dumps({"audio": MAXIMUM_AUDIOS}),
    ]

    with RemoteOpenAIServer(MODEL_NAME, args) as remote_server:
        yield remote_server


@pytest_asyncio.fixture
async def client(server):
    async with server.get_async_client() as async_client:
        yield async_client


@pytest.fixture(scope="session")
def base64_encoded_audio() -> dict[str, str]:
    return {
        audio_url: encode_audio_base64(*fetch_audio(audio_url))
        for audio_url in TEST_AUDIO_URLS
    }


@pytest.fixture(scope="session")
def url_encoded_audio() -> dict[str, str]:
    return {
        audio_url: encode_audio_url(*fetch_audio(audio_url))
        for audio_url in TEST_AUDIO_URLS
    }


def dummy_messages_from_audio_url(
    audio_urls: str | list[str],
    content_text: str = "What's happening in this audio?",
):
    if isinstance(audio_urls, str):
        audio_urls = [audio_urls]

    return [
        {
            "role": "user",
            "content": [
                *(
                    {"type": "audio_url", "audio_url": {"url": audio_url}}
                    for audio_url in audio_urls
                ),
                {"type": "text", "text": content_text},
            ],
        }
    ]


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", [TEST_AUDIO_URLS[0]])
async def test_single_chat_session_audio(
    client: openai.AsyncOpenAI, model_name: str, audio_url: str
):
    messages = dummy_messages_from_audio_url(audio_url)

    # test single completion
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
        logprobs=True,
        temperature=0.0,
        top_logprobs=5,
    )
    assert len(chat_completion.choices) == 1

    choice = chat_completion.choices[0]
    assert choice.finish_reason == "length"
    assert chat_completion.usage == openai.types.CompletionUsage(
        completion_tokens=10, prompt_tokens=202, total_tokens=212
    )

    message = choice.message
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 10
    assert message.role == "assistant"
    messages.append({"role": "assistant", "content": message.content})

    # test multi-turn dialogue
    messages.append({"role": "user", "content": "express your result in json"})
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
    )
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 0


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", [TEST_AUDIO_URLS[0]])
async def test_error_on_invalid_audio_url_type(
    client: openai.AsyncOpenAI, model_name: str, audio_url: str
):
    messages = [
        {
            "role": "user",
            "content": [
                {"type": "audio_url", "audio_url": audio_url},
                {"type": "text", "text": "What's happening in this audio?"},
            ],
        }
    ]

    # audio_url should be a dict {"url": "some url"}, not directly a string
    with pytest.raises(openai.BadRequestError):
        _ = await client.chat.completions.create(
            model=model_name,
            messages=messages,
            max_completion_tokens=10,
            temperature=0.0,
        )


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", [TEST_AUDIO_URLS[0]])
async def test_single_chat_session_audio_base64encoded(
    client: openai.AsyncOpenAI,
    model_name: str,
    audio_url: str,
    url_encoded_audio: dict[str, str],
):
    messages = dummy_messages_from_audio_url(url_encoded_audio[audio_url])

    # test single completion
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
        logprobs=True,
        temperature=0.0,
        top_logprobs=5,
    )
    assert len(chat_completion.choices) == 1

    choice = chat_completion.choices[0]
    assert choice.finish_reason == "length"
    assert chat_completion.usage == openai.types.CompletionUsage(
        completion_tokens=10, prompt_tokens=202, total_tokens=212
    )

    message = choice.message
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 10
    assert message.role == "assistant"
    messages.append({"role": "assistant", "content": message.content})

    # test multi-turn dialogue
    messages.append({"role": "user", "content": "express your result in json"})
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
        temperature=0.0,
    )
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 0


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", [TEST_AUDIO_URLS[0]])
async def test_single_chat_session_input_audio(
    client: openai.AsyncOpenAI,
    model_name: str,
    audio_url: str,
    base64_encoded_audio: dict[str, str],
):
    messages = [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_audio",
                    "input_audio": {
                        "data": base64_encoded_audio[audio_url],
                        "format": "wav",
                    },
                },
                {"type": "text", "text": "What's happening in this audio?"},
            ],
        }
    ]

    # test single completion
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
        logprobs=True,
        top_logprobs=5,
    )
    assert len(chat_completion.choices) == 1

    choice = chat_completion.choices[0]
    assert choice.finish_reason == "length"
    assert chat_completion.usage == openai.types.CompletionUsage(
        completion_tokens=10, prompt_tokens=202, total_tokens=212
    )

    message = choice.message
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 10
    assert message.role == "assistant"
    messages.append({"role": "assistant", "content": message.content})

    # test multi-turn dialogue
    messages.append({"role": "user", "content": "express your result in json"})
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=10,
    )
    message = chat_completion.choices[0].message
    assert message.content is not None and len(message.content) >= 0


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", TEST_AUDIO_URLS)
async def test_chat_streaming_audio(
    client: openai.AsyncOpenAI, model_name: str, audio_url: str
):
    messages = dummy_messages_from_audio_url(
        audio_url, "What's a short title for this audio?"
    )

    # test single completion
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=8,
        temperature=0.0,
    )
    output = chat_completion.choices[0].message.content
    stop_reason = chat_completion.choices[0].finish_reason

    # test streaming
    stream = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=8,
        temperature=0.0,
        stream=True,
    )
    chunks: list[str] = []
    finish_reason_count = 0
    async for chunk in stream:
        delta = chunk.choices[0].delta
        if delta.role:
            assert delta.role == "assistant"
        if delta.content:
            chunks.append(delta.content)
        if chunk.choices[0].finish_reason is not None:
            finish_reason_count += 1
    # finish reason should only return in last block
    assert finish_reason_count == 1
    assert chunk.choices[0].finish_reason == stop_reason
    assert delta.content
    assert "".join(chunks) == output


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize("audio_url", TEST_AUDIO_URLS)
async def test_chat_streaming_input_audio(
    client: openai.AsyncOpenAI,
    model_name: str,
    audio_url: str,
    base64_encoded_audio: dict[str, str],
):
    messages = [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_audio",
                    "input_audio": {
                        "data": base64_encoded_audio[audio_url],
                        "format": "wav",
                    },
                },
                {"type": "text", "text": "What's a short title for this audio?"},
            ],
        }
    ]

    # test single completion
    chat_completion = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=8,
        temperature=0.0,
    )
    output = chat_completion.choices[0].message.content
    stop_reason = chat_completion.choices[0].finish_reason

    # test streaming
    stream = await client.chat.completions.create(
        model=model_name,
        messages=messages,
        max_completion_tokens=8,
        temperature=0.0,
        stream=True,
    )
    chunks: list[str] = []
    finish_reason_count = 0
    async for chunk in stream:
        delta = chunk.choices[0].delta
        if delta.role:
            assert delta.role == "assistant"
        if delta.content:
            chunks.append(delta.content)
        if chunk.choices[0].finish_reason is not None:
            finish_reason_count += 1
    # finish reason should only return in last block
    assert finish_reason_count == 1
    assert chunk.choices[0].finish_reason == stop_reason
    assert delta.content
    assert "".join(chunks) == output


@pytest.mark.asyncio
@pytest.mark.parametrize("model_name", [MODEL_NAME])
@pytest.mark.parametrize(
    "audio_urls", [TEST_AUDIO_URLS, TEST_AUDIO_URLS + [TEST_AUDIO_URLS[0]]]
)
async def test_multi_audio_input(
    client: openai.AsyncOpenAI, model_name: str, audio_urls: list[str]
):
    messages = dummy_messages_from_audio_url(audio_urls)

    if len(audio_urls) > MAXIMUM_AUDIOS:
        with pytest.raises(openai.BadRequestError):  # test multi-audio input
            await client.chat.completions.create(
                model=model_name,
                messages=messages,
                max_completion_tokens=10,
                temperature=0.0,
            )

        # the server should still work afterwards
        completion = await client.completions.create(
            model=model_name,
            prompt=[0, 0, 0, 0, 0],
            max_tokens=5,
            temperature=0.0,
        )
        completion = completion.choices[0].text
        assert completion is not None and len(completion) >= 0
    else:
        chat_completion = await client.chat.completions.create(
            model=model_name,
            messages=messages,
            max_completion_tokens=10,
            temperature=0.0,
        )
        message = chat_completion.choices[0].message
        assert message.content is not None and len(message.content) >= 0