feat: integrate faster-whisper local STT with three-provider fallback

Merge main's faster-whisper (local, free) with our Groq support into a
unified three-provider STT pipeline: local > groq > openai.

Provider priority ensures free options are tried first. Each provider
has its own transcriber function with model auto-correction, env-
overridable endpoints, and proper error handling.

74 tests cover the full provider matrix, fallback chains, model
correction, config loading, validation edge cases, and dispatch.
This commit is contained in:
0xbyt4 2026-03-13 23:33:16 +03:00
parent c433c89d7d
commit b8f8d3ef9e
6 changed files with 907 additions and 264 deletions

View file

@ -1,4 +1,9 @@
"""Tests for tools.transcription_tools -- provider resolution, model correction, config helper."""
"""Tests for tools.transcription_tools — three-provider STT pipeline.
Covers the full provider matrix (local, groq, openai), fallback chains,
model auto-correction, config loading, validation edge cases, and
end-to-end dispatch. All external dependencies are mocked.
"""
import os
import struct
@ -28,6 +33,14 @@ def sample_wav(tmp_path):
return str(wav_path)
@pytest.fixture
def sample_ogg(tmp_path):
"""Create a fake OGG file for validation tests."""
ogg_path = tmp_path / "test.ogg"
ogg_path.write_bytes(b"fake audio data")
return str(ogg_path)
@pytest.fixture(autouse=True)
def clean_env(monkeypatch):
"""Ensure no real API keys leak into tests."""
@ -36,60 +49,330 @@ def clean_env(monkeypatch):
# ============================================================================
# _resolve_stt_provider
# _get_provider — full permutation matrix
# ============================================================================
class TestResolveSTTProvider:
def test_openai_preferred_over_groq(self, monkeypatch):
class TestGetProviderGroq:
"""Groq-specific provider selection tests."""
def test_groq_when_key_set(self, monkeypatch):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools._HAS_FASTER_WHISPER", False):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "groq"}) == "groq"
def test_groq_fallback_to_local(self, monkeypatch):
monkeypatch.delenv("GROQ_API_KEY", raising=False)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "groq"}) == "local"
def test_groq_fallback_to_openai(self, monkeypatch):
monkeypatch.delenv("GROQ_API_KEY", raising=False)
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "groq"}) == "openai"
def test_groq_nothing_available(self, monkeypatch):
monkeypatch.delenv("GROQ_API_KEY", raising=False)
monkeypatch.delenv("VOICE_TOOLS_OPENAI_KEY", raising=False)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", False):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "groq"}) == "none"
class TestGetProviderFallbackPriority:
"""Cross-provider fallback priority tests."""
def test_local_fallback_prefers_groq_over_openai(self, monkeypatch):
"""When local unavailable, groq (free) is preferred over openai (paid)."""
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "local"}) == "groq"
from tools.transcription_tools import _resolve_stt_provider
key, url, provider = _resolve_stt_provider()
assert provider == "openai"
assert key == "sk-test"
assert "openai.com" in url
def test_groq_fallback(self, monkeypatch):
def test_local_fallback_to_groq_only(self, monkeypatch):
"""When only groq key available, falls back to groq."""
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "local"}) == "groq"
from tools.transcription_tools import _resolve_stt_provider
key, url, provider = _resolve_stt_provider()
def test_openai_fallback_to_groq(self, monkeypatch):
"""When openai key missing but groq available, falls back to groq."""
monkeypatch.delenv("VOICE_TOOLS_OPENAI_KEY", raising=False)
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "openai"}) == "groq"
assert provider == "groq"
assert key == "gsk-test"
assert "groq.com" in url
def test_openai_nothing_available(self, monkeypatch):
"""When no openai key and no local, returns none."""
monkeypatch.delenv("VOICE_TOOLS_OPENAI_KEY", raising=False)
monkeypatch.delenv("GROQ_API_KEY", raising=False)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", False), \
patch("tools.transcription_tools._HAS_OPENAI", True):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "openai"}) == "none"
def test_no_keys_returns_none(self):
from tools.transcription_tools import _resolve_stt_provider
key, url, provider = _resolve_stt_provider()
def test_unknown_provider_passed_through(self):
from tools.transcription_tools import _get_provider
assert _get_provider({"provider": "custom-endpoint"}) == "custom-endpoint"
assert provider == "none"
assert key is None
assert url is None
def test_empty_config_defaults_to_local(self):
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True):
from tools.transcription_tools import _get_provider
assert _get_provider({}) == "local"
# ============================================================================
# transcribe_audio -- no API key
# _transcribe_groq
# ============================================================================
class TestTranscribeAudioNoKey:
def test_returns_error_when_no_key(self):
from tools.transcription_tools import transcribe_audio
result = transcribe_audio("/tmp/test.wav")
class TestTranscribeGroq:
def test_no_key(self, monkeypatch):
monkeypatch.delenv("GROQ_API_KEY", raising=False)
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq("/tmp/test.ogg", "whisper-large-v3-turbo")
assert result["success"] is False
assert "No STT API key" in result["error"]
assert "GROQ_API_KEY" in result["error"]
def test_returns_error_for_missing_file(self, monkeypatch):
def test_openai_package_not_installed(self, monkeypatch):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
with patch("tools.transcription_tools._HAS_OPENAI", False):
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq("/tmp/test.ogg", "whisper-large-v3-turbo")
assert result["success"] is False
assert "openai package" in result["error"]
def test_successful_transcription(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
from tools.transcription_tools import transcribe_audio
result = transcribe_audio("/nonexistent/audio.wav")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "hello world"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq(sample_wav, "whisper-large-v3-turbo")
assert result["success"] is True
assert result["transcript"] == "hello world"
assert result["provider"] == "groq"
def test_whitespace_stripped(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = " hello world \n"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq(sample_wav, "whisper-large-v3-turbo")
assert result["transcript"] == "hello world"
def test_uses_groq_base_url(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client) as mock_openai_cls:
from tools.transcription_tools import _transcribe_groq, GROQ_BASE_URL
_transcribe_groq(sample_wav, "whisper-large-v3-turbo")
call_kwargs = mock_openai_cls.call_args
assert call_kwargs.kwargs["base_url"] == GROQ_BASE_URL
def test_api_error_returns_failure(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.side_effect = Exception("API error")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq(sample_wav, "whisper-large-v3-turbo")
assert result["success"] is False
assert "not found" in result["error"]
assert "API error" in result["error"]
def test_permission_error(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.side_effect = PermissionError("denied")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
result = _transcribe_groq(sample_wav, "whisper-large-v3-turbo")
assert result["success"] is False
assert "Permission denied" in result["error"]
# ============================================================================
# _transcribe_openai — additional tests
# ============================================================================
class TestTranscribeOpenAIExtended:
def test_openai_package_not_installed(self, monkeypatch):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
with patch("tools.transcription_tools._HAS_OPENAI", False):
from tools.transcription_tools import _transcribe_openai
result = _transcribe_openai("/tmp/test.ogg", "whisper-1")
assert result["success"] is False
assert "openai package" in result["error"]
def test_uses_openai_base_url(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client) as mock_openai_cls:
from tools.transcription_tools import _transcribe_openai, OPENAI_BASE_URL
_transcribe_openai(sample_wav, "whisper-1")
call_kwargs = mock_openai_cls.call_args
assert call_kwargs.kwargs["base_url"] == OPENAI_BASE_URL
def test_whitespace_stripped(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = " hello \n"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai
result = _transcribe_openai(sample_wav, "whisper-1")
assert result["transcript"] == "hello"
def test_permission_error(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.side_effect = PermissionError("denied")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai
result = _transcribe_openai(sample_wav, "whisper-1")
assert result["success"] is False
assert "Permission denied" in result["error"]
# ============================================================================
# _transcribe_local — additional tests
# ============================================================================
class TestTranscribeLocalExtended:
def test_model_reuse_on_second_call(self, tmp_path):
"""Second call with same model should NOT reload the model."""
audio = tmp_path / "test.ogg"
audio.write_bytes(b"fake")
mock_segment = MagicMock()
mock_segment.text = "hi"
mock_info = MagicMock()
mock_info.language = "en"
mock_info.duration = 1.0
mock_model = MagicMock()
mock_model.transcribe.return_value = ([mock_segment], mock_info)
mock_whisper_cls = MagicMock(return_value=mock_model)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True), \
patch("tools.transcription_tools.WhisperModel", mock_whisper_cls), \
patch("tools.transcription_tools._local_model", None), \
patch("tools.transcription_tools._local_model_name", None):
from tools.transcription_tools import _transcribe_local
_transcribe_local(str(audio), "base")
_transcribe_local(str(audio), "base")
# WhisperModel should be created only once
assert mock_whisper_cls.call_count == 1
def test_model_reloaded_on_change(self, tmp_path):
"""Switching model name should reload the model."""
audio = tmp_path / "test.ogg"
audio.write_bytes(b"fake")
mock_segment = MagicMock()
mock_segment.text = "hi"
mock_info = MagicMock()
mock_info.language = "en"
mock_info.duration = 1.0
mock_model = MagicMock()
mock_model.transcribe.return_value = ([mock_segment], mock_info)
mock_whisper_cls = MagicMock(return_value=mock_model)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True), \
patch("tools.transcription_tools.WhisperModel", mock_whisper_cls), \
patch("tools.transcription_tools._local_model", None), \
patch("tools.transcription_tools._local_model_name", None):
from tools.transcription_tools import _transcribe_local
_transcribe_local(str(audio), "base")
_transcribe_local(str(audio), "small")
assert mock_whisper_cls.call_count == 2
def test_exception_returns_failure(self, tmp_path):
audio = tmp_path / "test.ogg"
audio.write_bytes(b"fake")
mock_whisper_cls = MagicMock(side_effect=RuntimeError("CUDA out of memory"))
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True), \
patch("tools.transcription_tools.WhisperModel", mock_whisper_cls), \
patch("tools.transcription_tools._local_model", None):
from tools.transcription_tools import _transcribe_local
result = _transcribe_local(str(audio), "large-v3")
assert result["success"] is False
assert "CUDA out of memory" in result["error"]
def test_multiple_segments_joined(self, tmp_path):
audio = tmp_path / "test.ogg"
audio.write_bytes(b"fake")
seg1 = MagicMock()
seg1.text = "Hello"
seg2 = MagicMock()
seg2.text = " world"
mock_info = MagicMock()
mock_info.language = "en"
mock_info.duration = 3.0
mock_model = MagicMock()
mock_model.transcribe.return_value = ([seg1, seg2], mock_info)
with patch("tools.transcription_tools._HAS_FASTER_WHISPER", True), \
patch("tools.transcription_tools.WhisperModel", return_value=mock_model), \
patch("tools.transcription_tools._local_model", None):
from tools.transcription_tools import _transcribe_local
result = _transcribe_local(str(audio), "base")
assert result["success"] is True
assert result["transcript"] == "Hello world"
# ============================================================================
@ -103,13 +386,25 @@ class TestModelAutoCorrection:
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "hello world"
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio, DEFAULT_GROQ_STT_MODEL
result = transcribe_audio(sample_wav, model="whisper-1")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq, DEFAULT_GROQ_STT_MODEL
_transcribe_groq(sample_wav, "whisper-1")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == DEFAULT_GROQ_STT_MODEL
def test_groq_corrects_gpt4o_transcribe(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq, DEFAULT_GROQ_STT_MODEL
_transcribe_groq(sample_wav, "gpt-4o-transcribe")
assert result["success"] is True
assert result["transcript"] == "hello world"
# Verify the model was corrected to Groq default
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == DEFAULT_GROQ_STT_MODEL
@ -119,84 +414,262 @@ class TestModelAutoCorrection:
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "hello world"
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio, DEFAULT_STT_MODEL
result = transcribe_audio(sample_wav, model="whisper-large-v3-turbo")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai, DEFAULT_STT_MODEL
_transcribe_openai(sample_wav, "whisper-large-v3-turbo")
assert result["success"] is True
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == DEFAULT_STT_MODEL
def test_none_model_uses_provider_default(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
def test_openai_corrects_distil_whisper(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio, DEFAULT_GROQ_STT_MODEL
transcribe_audio(sample_wav, model=None)
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai, DEFAULT_STT_MODEL
_transcribe_openai(sample_wav, "distil-whisper-large-v3-en")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == DEFAULT_GROQ_STT_MODEL
assert call_kwargs.kwargs["model"] == DEFAULT_STT_MODEL
def test_compatible_model_not_overridden(self, monkeypatch, sample_wav):
def test_compatible_groq_model_not_overridden(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio
transcribe_audio(sample_wav, model="whisper-large-v3")
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
_transcribe_groq(sample_wav, "whisper-large-v3")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == "whisper-large-v3"
# ============================================================================
# transcribe_audio -- success path
# ============================================================================
class TestTranscribeAudioSuccess:
def test_successful_transcription(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "hello world"
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_wav)
assert result["success"] is True
assert result["transcript"] == "hello world"
assert result["provider"] == "groq"
def test_api_error_returns_failure(self, monkeypatch, sample_wav):
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.side_effect = Exception("API error")
with patch("openai.OpenAI", return_value=mock_client):
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_wav)
assert result["success"] is False
assert "API error" in result["error"]
def test_whitespace_transcript_stripped(self, monkeypatch, sample_wav):
def test_compatible_openai_model_not_overridden(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = " hello world \n"
mock_client.audio.transcriptions.create.return_value = "test"
with patch("openai.OpenAI", return_value=mock_client):
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai
_transcribe_openai(sample_wav, "gpt-4o-mini-transcribe")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == "gpt-4o-mini-transcribe"
def test_unknown_model_passes_through_groq(self, monkeypatch, sample_wav):
"""A model not in either known set should not be overridden."""
monkeypatch.setenv("GROQ_API_KEY", "gsk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_groq
_transcribe_groq(sample_wav, "my-custom-model")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == "my-custom-model"
def test_unknown_model_passes_through_openai(self, monkeypatch, sample_wav):
monkeypatch.setenv("VOICE_TOOLS_OPENAI_KEY", "sk-test")
mock_client = MagicMock()
mock_client.audio.transcriptions.create.return_value = "test"
with patch("tools.transcription_tools._HAS_OPENAI", True), \
patch("tools.transcription_tools.OpenAI", return_value=mock_client):
from tools.transcription_tools import _transcribe_openai
_transcribe_openai(sample_wav, "my-custom-model")
call_kwargs = mock_client.audio.transcriptions.create.call_args
assert call_kwargs.kwargs["model"] == "my-custom-model"
# ============================================================================
# _load_stt_config
# ============================================================================
class TestLoadSttConfig:
def test_returns_dict_when_import_fails(self):
with patch("tools.transcription_tools._load_stt_config") as mock_load:
mock_load.return_value = {}
from tools.transcription_tools import _load_stt_config
assert _load_stt_config() == {}
def test_real_load_returns_dict(self):
"""_load_stt_config should always return a dict, even on import error."""
with patch.dict("sys.modules", {"hermes_cli": None, "hermes_cli.config": None}):
from tools.transcription_tools import _load_stt_config
result = _load_stt_config()
assert isinstance(result, dict)
# ============================================================================
# _validate_audio_file — edge cases
# ============================================================================
class TestValidateAudioFileEdgeCases:
def test_directory_is_not_a_file(self, tmp_path):
from tools.transcription_tools import _validate_audio_file
# tmp_path itself is a directory with an .ogg-ish name? No.
# Create a directory with a valid audio extension
d = tmp_path / "audio.ogg"
d.mkdir()
result = _validate_audio_file(str(d))
assert result is not None
assert "not a file" in result["error"]
def test_stat_oserror(self, tmp_path):
f = tmp_path / "test.ogg"
f.write_bytes(b"data")
from tools.transcription_tools import _validate_audio_file
real_stat = f.stat()
call_count = 0
def stat_side_effect(*args, **kwargs):
nonlocal call_count
call_count += 1
# First calls are from exists() and is_file(), let them pass
if call_count <= 2:
return real_stat
raise OSError("disk error")
with patch("pathlib.Path.stat", side_effect=stat_side_effect):
result = _validate_audio_file(str(f))
assert result is not None
assert "Failed to access" in result["error"]
def test_all_supported_formats_accepted(self, tmp_path):
from tools.transcription_tools import _validate_audio_file, SUPPORTED_FORMATS
for fmt in SUPPORTED_FORMATS:
f = tmp_path / f"test{fmt}"
f.write_bytes(b"data")
assert _validate_audio_file(str(f)) is None, f"Format {fmt} should be accepted"
def test_case_insensitive_extension(self, tmp_path):
from tools.transcription_tools import _validate_audio_file
f = tmp_path / "test.MP3"
f.write_bytes(b"data")
assert _validate_audio_file(str(f)) is None
# ============================================================================
# transcribe_audio — end-to-end dispatch
# ============================================================================
class TestTranscribeAudioDispatch:
def test_dispatches_to_groq(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={"provider": "groq"}), \
patch("tools.transcription_tools._get_provider", return_value="groq"), \
patch("tools.transcription_tools._transcribe_groq",
return_value={"success": True, "transcript": "hi", "provider": "groq"}) as mock_groq:
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_wav)
result = transcribe_audio(sample_ogg)
assert result["transcript"] == "hello world"
assert result["success"] is True
assert result["provider"] == "groq"
mock_groq.assert_called_once()
def test_dispatches_to_local(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={}), \
patch("tools.transcription_tools._get_provider", return_value="local"), \
patch("tools.transcription_tools._transcribe_local",
return_value={"success": True, "transcript": "hi"}) as mock_local:
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_ogg)
assert result["success"] is True
mock_local.assert_called_once()
def test_dispatches_to_openai(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={"provider": "openai"}), \
patch("tools.transcription_tools._get_provider", return_value="openai"), \
patch("tools.transcription_tools._transcribe_openai",
return_value={"success": True, "transcript": "hi", "provider": "openai"}) as mock_openai:
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_ogg)
assert result["success"] is True
mock_openai.assert_called_once()
def test_no_provider_returns_error(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={}), \
patch("tools.transcription_tools._get_provider", return_value="none"):
from tools.transcription_tools import transcribe_audio
result = transcribe_audio(sample_ogg)
assert result["success"] is False
assert "No STT provider" in result["error"]
assert "faster-whisper" in result["error"]
assert "GROQ_API_KEY" in result["error"]
def test_invalid_file_short_circuits(self):
from tools.transcription_tools import transcribe_audio
result = transcribe_audio("/nonexistent/audio.wav")
assert result["success"] is False
assert "not found" in result["error"]
def test_model_override_passed_to_groq(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={}), \
patch("tools.transcription_tools._get_provider", return_value="groq"), \
patch("tools.transcription_tools._transcribe_groq",
return_value={"success": True, "transcript": "hi"}) as mock_groq:
from tools.transcription_tools import transcribe_audio
transcribe_audio(sample_ogg, model="whisper-large-v3")
_, kwargs = mock_groq.call_args
assert kwargs.get("model_name") or mock_groq.call_args[0][1] == "whisper-large-v3"
def test_model_override_passed_to_local(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={}), \
patch("tools.transcription_tools._get_provider", return_value="local"), \
patch("tools.transcription_tools._transcribe_local",
return_value={"success": True, "transcript": "hi"}) as mock_local:
from tools.transcription_tools import transcribe_audio
transcribe_audio(sample_ogg, model="large-v3")
assert mock_local.call_args[0][1] == "large-v3"
def test_default_model_used_when_none(self, sample_ogg):
with patch("tools.transcription_tools._load_stt_config", return_value={}), \
patch("tools.transcription_tools._get_provider", return_value="groq"), \
patch("tools.transcription_tools._transcribe_groq",
return_value={"success": True, "transcript": "hi"}) as mock_groq:
from tools.transcription_tools import transcribe_audio, DEFAULT_GROQ_STT_MODEL
transcribe_audio(sample_ogg, model=None)
assert mock_groq.call_args[0][1] == DEFAULT_GROQ_STT_MODEL
def test_config_local_model_used(self, sample_ogg):
config = {"local": {"model": "small"}}
with patch("tools.transcription_tools._load_stt_config", return_value=config), \
patch("tools.transcription_tools._get_provider", return_value="local"), \
patch("tools.transcription_tools._transcribe_local",
return_value={"success": True, "transcript": "hi"}) as mock_local:
from tools.transcription_tools import transcribe_audio
transcribe_audio(sample_ogg, model=None)
assert mock_local.call_args[0][1] == "small"
def test_config_openai_model_used(self, sample_ogg):
config = {"openai": {"model": "gpt-4o-transcribe"}}
with patch("tools.transcription_tools._load_stt_config", return_value=config), \
patch("tools.transcription_tools._get_provider", return_value="openai"), \
patch("tools.transcription_tools._transcribe_openai",
return_value={"success": True, "transcript": "hi"}) as mock_openai:
from tools.transcription_tools import transcribe_audio
transcribe_audio(sample_ogg, model=None)
assert mock_openai.call_args[0][1] == "gpt-4o-transcribe"
# ============================================================================