Skip to content

GitLab

"vllm/vscode:/vscode.git/clone" did not exist on "13d8746c545576bcb6e0771ee4dc0b6fae694fa1"
Switch branch/tag
Find file Normal viewHistoryPermalink
test_audio.py 5.05 KB
Newer Older
Deboleina's avatar
Multimodal - audio tests (#25285)  
Deboleina committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140 
# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
# test_audio.py
import base64
from pathlib import Path
from unittest.mock import patch

import numpy as np
import pytest

from vllm.multimodal.audio import (AudioMediaIO, AudioResampler,
                                   resample_audio_librosa,
                                   resample_audio_scipy)


@pytest.fixture
def dummy_audio():
    return np.array([0.0, 0.1, 0.2, 0.3, 0.4], dtype=float)


def test_resample_audio_librosa(dummy_audio):
    with patch("vllm.multimodal.audio.librosa.resample") as mock_resample:
        mock_resample.return_value = dummy_audio * 2
        out = resample_audio_librosa(dummy_audio,
                                     orig_sr=44100,
                                     target_sr=22050)
        mock_resample.assert_called_once_with(dummy_audio,
                                              orig_sr=44100,
                                              target_sr=22050)
        assert np.all(out == dummy_audio * 2)


def test_resample_audio_scipy(dummy_audio):
    out_down = resample_audio_scipy(dummy_audio, orig_sr=4, target_sr=2)
    out_up = resample_audio_scipy(dummy_audio, orig_sr=2, target_sr=4)
    out_same = resample_audio_scipy(dummy_audio, orig_sr=4, target_sr=4)

    assert len(out_down) == 3
    assert len(out_up) == 10
    assert np.all(out_same == dummy_audio)


@pytest.mark.xfail(
    reason="resample_audio_scipy is buggy for non-integer ratios")
def test_resample_audio_scipy_non_integer_ratio(dummy_audio):
    out = resample_audio_scipy(dummy_audio, orig_sr=5, target_sr=3)

    expected_len = int(round(len(dummy_audio) * 3 / 5))
    assert len(out) == expected_len

    assert isinstance(out, np.ndarray)
    assert np.isfinite(out).all()


def test_audio_resampler_librosa_calls_resample(dummy_audio):
    resampler = AudioResampler(target_sr=22050, method="librosa")
    with patch(
            "vllm.multimodal.audio.resample_audio_librosa") as mock_resample:
        mock_resample.return_value = dummy_audio
        out = resampler.resample(dummy_audio, orig_sr=44100)
        mock_resample.assert_called_once_with(dummy_audio,
                                              orig_sr=44100,
                                              target_sr=22050)
        assert np.all(out == dummy_audio)


def test_audio_resampler_scipy_calls_resample(dummy_audio):
    resampler = AudioResampler(target_sr=22050, method="scipy")
    with patch("vllm.multimodal.audio.resample_audio_scipy") as mock_resample:
        mock_resample.return_value = dummy_audio
        out = resampler.resample(dummy_audio, orig_sr=44100)
        mock_resample.assert_called_once_with(dummy_audio,
                                              orig_sr=44100,
                                              target_sr=22050)
        assert np.all(out == dummy_audio)


def test_audio_resampler_invalid_method(dummy_audio):
    resampler = AudioResampler(target_sr=22050, method="invalid")
    with pytest.raises(ValueError):
        resampler.resample(dummy_audio, orig_sr=44100)


def test_audio_resampler_no_target_sr(dummy_audio):
    resampler = AudioResampler(target_sr=None)
    with pytest.raises(RuntimeError):
        resampler.resample(dummy_audio, orig_sr=44100)


@pytest.fixture
def dummy_audio_bytes():
    return b"FAKEAUDIOBYTES"


def test_audio_media_io_load_bytes(dummy_audio_bytes):
    audio_io = AudioMediaIO()
    with patch("vllm.multimodal.audio.librosa.load") as mock_load:
        mock_load.return_value = (np.array([0.1, 0.2]), 16000)
        out = audio_io.load_bytes(dummy_audio_bytes)
        mock_load.assert_called_once()
        assert isinstance(out[0], np.ndarray)
        assert out[1] == 16000


def test_audio_media_io_load_base64(dummy_audio_bytes):
    audio_io = AudioMediaIO()
    encoded = base64.b64encode(dummy_audio_bytes).decode("utf-8")
    with patch.object(AudioMediaIO, "load_bytes") as mock_load_bytes:
        mock_load_bytes.return_value = (np.array([0.1, 0.2]), 16000)
        out = audio_io.load_base64("audio/wav", encoded)
        mock_load_bytes.assert_called_once()
        assert isinstance(out[0], np.ndarray)
        assert out[1] == 16000


def test_audio_media_io_load_file():
    audio_io = AudioMediaIO()
    path = Path("/fake/path.wav")
    with patch("vllm.multimodal.audio.librosa.load") as mock_load:
        mock_load.return_value = (np.array([0.1, 0.2]), 16000)
        out = audio_io.load_file(path)
        mock_load.assert_called_once_with(path, sr=None)
        assert isinstance(out[0], np.ndarray)
        assert out[1] == 16000


def test_audio_media_io_encode_base64(dummy_audio):
    audio_io = AudioMediaIO()
    media = (dummy_audio, 16000)
    with patch("vllm.multimodal.audio.soundfile.write") as mock_write:

        def write_to_buffer(buffer, *_args, **_kwargs):
            buffer.write(b"dummy_wav_data")

        mock_write.side_effect = write_to_buffer

        out = audio_io.encode_base64(media)
        decoded = base64.b64decode(out)
        assert decoded == b"dummy_wav_data"
        mock_write.assert_called_once()