Files
reflector/server/tests/test_model_api_transcript.py
Sergey Mankovsky ab859d65a6 feat: self-hosted gpu api (#636)
* Self-hosted gpu api

* Refactor self-hosted api

* Rename model api tests

* Use lifespan instead of startup event

* Fix self hosted imports

* Add newlines

* Add response models

* Move gpu dir to the root

* Add project description

* Refactor lifespan

* Update env var names for model api tests

* Preload diarizarion service

* Refactor uploaded file paths
2025-09-17 18:52:03 +02:00

336 lines
12 KiB
Python

"""
Tests for transcription Model API endpoints.
These tests are marked with the "model_api" group and will not run by default.
Run them with: pytest -m model_api tests/test_model_api_transcript.py
Required environment variables:
- TRANSCRIPT_URL: URL to the Model API endpoint (required)
- TRANSCRIPT_API_KEY: API key for authentication (optional)
- TRANSCRIPT_MODEL: Model name to use (optional, defaults to nvidia/parakeet-tdt-0.6b-v2)
Example with pytest (override default addopts to run ONLY model_api tests):
TRANSCRIPT_URL=https://monadical-sas--reflector-transcriber-parakeet-web-dev.modal.run \
TRANSCRIPT_API_KEY=your-api-key \
uv run -m pytest -m model_api --no-cov tests/test_model_api_transcript.py
# Or with completely clean options:
uv run -m pytest -m model_api -o addopts="" tests/
Running Modal locally for testing:
modal serve gpu/modal_deployments/reflector_transcriber_parakeet.py
# This will give you a local URL like https://xxxxx--reflector-transcriber-parakeet-web-dev.modal.run to test against
"""
import os
import tempfile
from pathlib import Path
import httpx
import pytest
# Test audio file URL for testing
TEST_AUDIO_URL = (
"https://reflector-github-pytest.s3.us-east-1.amazonaws.com/test_mathieu_hello.mp3"
)
def get_modal_transcript_url():
"""Get and validate the Modal transcript URL from environment."""
url = os.environ.get("TRANSCRIPT_URL")
if not url:
pytest.skip(
"TRANSCRIPT_URL environment variable is required for Model API tests"
)
return url
def get_auth_headers():
"""Get authentication headers if API key is available."""
api_key = os.environ.get("TRANSCRIPT_API_KEY") or os.environ.get(
"REFLECTOR_GPU_APIKEY"
)
if api_key:
return {"Authorization": f"Bearer {api_key}"}
return {}
def get_model_name():
"""Get the model name from environment or use default."""
return os.environ.get("TRANSCRIPT_MODEL", "nvidia/parakeet-tdt-0.6b-v2")
@pytest.mark.model_api
class TestModelAPITranscript:
"""Test suite for GPU Modal transcription endpoints."""
def test_transcriptions_from_url(self):
"""Test the /v1/audio/transcriptions-from-url endpoint."""
url = get_modal_transcript_url()
headers = get_auth_headers()
with httpx.Client(timeout=60.0) as client:
response = client.post(
f"{url}/v1/audio/transcriptions-from-url",
json={
"audio_file_url": TEST_AUDIO_URL,
"model": get_model_name(),
"language": "en",
"timestamp_offset": 0.0,
},
headers=headers,
)
assert response.status_code == 200, f"Request failed: {response.text}"
result = response.json()
# Verify response structure
assert "text" in result
assert "words" in result
assert isinstance(result["text"], str)
assert isinstance(result["words"], list)
# Verify content is meaningful
assert len(result["text"]) > 0, "Transcript text should not be empty"
assert len(result["words"]) > 0, "Words list must not be empty"
# Verify word structure
for word in result["words"]:
assert "word" in word
assert "start" in word
assert "end" in word
assert isinstance(word["start"], (int, float))
assert isinstance(word["end"], (int, float))
assert word["start"] <= word["end"]
def test_transcriptions_single_file(self):
"""Test the /v1/audio/transcriptions endpoint with a single file."""
url = get_modal_transcript_url()
headers = get_auth_headers()
# Download test audio file to upload
with httpx.Client(timeout=60.0) as client:
audio_response = client.get(TEST_AUDIO_URL)
audio_response.raise_for_status()
with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as tmp_file:
tmp_file.write(audio_response.content)
tmp_file_path = tmp_file.name
try:
# Upload the file for transcription
with open(tmp_file_path, "rb") as f:
files = {"file": ("test_audio.mp3", f, "audio/mpeg")}
data = {
"model": get_model_name(),
"language": "en",
"batch": "false",
}
response = client.post(
f"{url}/v1/audio/transcriptions",
files=files,
data=data,
headers=headers,
)
assert response.status_code == 200, f"Request failed: {response.text}"
result = response.json()
# Verify response structure for single file
assert "text" in result
assert "words" in result
assert "filename" in result
assert isinstance(result["text"], str)
assert isinstance(result["words"], list)
# Verify content
assert len(result["text"]) > 0, "Transcript text should not be empty"
finally:
Path(tmp_file_path).unlink(missing_ok=True)
def test_transcriptions_multiple_files(self):
"""Test the /v1/audio/transcriptions endpoint with multiple files (non-batch mode)."""
url = get_modal_transcript_url()
headers = get_auth_headers()
# Create multiple test files (we'll use the same audio content for simplicity)
with httpx.Client(timeout=60.0) as client:
audio_response = client.get(TEST_AUDIO_URL)
audio_response.raise_for_status()
audio_content = audio_response.content
temp_files = []
try:
# Create 3 temporary files
for i in range(3):
tmp_file = tempfile.NamedTemporaryFile(suffix=".mp3", delete=False)
tmp_file.write(audio_content)
tmp_file.close()
temp_files.append(tmp_file.name)
# Upload multiple files for transcription (non-batch)
files = [
("files", (f"test_audio_{i}.mp3", open(f, "rb"), "audio/mpeg"))
for i, f in enumerate(temp_files)
]
data = {
"model": get_model_name(),
"language": "en",
"batch": "false",
}
response = client.post(
f"{url}/v1/audio/transcriptions",
files=files,
data=data,
headers=headers,
)
# Close file handles
for _, file_tuple in files:
file_tuple[1].close()
assert response.status_code == 200, f"Request failed: {response.text}"
result = response.json()
# Verify response structure for multiple files (non-batch)
assert "results" in result
assert isinstance(result["results"], list)
assert len(result["results"]) == 3
for idx, file_result in enumerate(result["results"]):
assert "text" in file_result
assert "words" in file_result
assert "filename" in file_result
assert isinstance(file_result["text"], str)
assert isinstance(file_result["words"], list)
assert len(file_result["text"]) > 0
finally:
for f in temp_files:
Path(f).unlink(missing_ok=True)
def test_transcriptions_multiple_files_batch(self):
"""Test the /v1/audio/transcriptions endpoint with multiple files in batch mode."""
url = get_modal_transcript_url()
headers = get_auth_headers()
# Create multiple test files
with httpx.Client(timeout=60.0) as client:
audio_response = client.get(TEST_AUDIO_URL)
audio_response.raise_for_status()
audio_content = audio_response.content
temp_files = []
try:
# Create 3 temporary files
for i in range(3):
tmp_file = tempfile.NamedTemporaryFile(suffix=".mp3", delete=False)
tmp_file.write(audio_content)
tmp_file.close()
temp_files.append(tmp_file.name)
# Upload multiple files for batch transcription
files = [
("files", (f"test_audio_{i}.mp3", open(f, "rb"), "audio/mpeg"))
for i, f in enumerate(temp_files)
]
data = {
"model": get_model_name(),
"language": "en",
"batch": "true",
}
response = client.post(
f"{url}/v1/audio/transcriptions",
files=files,
data=data,
headers=headers,
)
# Close file handles
for _, file_tuple in files:
file_tuple[1].close()
assert response.status_code == 200, f"Request failed: {response.text}"
result = response.json()
# Verify response structure for batch mode
assert "results" in result
assert isinstance(result["results"], list)
assert len(result["results"]) == 3
for idx, batch_result in enumerate(result["results"]):
assert "text" in batch_result
assert "words" in batch_result
assert "filename" in batch_result
assert isinstance(batch_result["text"], str)
assert isinstance(batch_result["words"], list)
assert len(batch_result["text"]) > 0
finally:
for f in temp_files:
Path(f).unlink(missing_ok=True)
@pytest.mark.skipif(
not "parakeet" in get_model_name(), reason="Parakeet only supports English"
)
def test_transcriptions_error_handling(self):
"""Test error handling for invalid requests."""
url = get_modal_transcript_url()
headers = get_auth_headers()
with httpx.Client(timeout=60.0) as client:
# Test with unsupported language
response = client.post(
f"{url}/v1/audio/transcriptions-from-url",
json={
"audio_file_url": TEST_AUDIO_URL,
"model": get_model_name(),
"language": "fr", # Parakeet only supports English
"timestamp_offset": 0.0,
},
headers=headers,
)
assert response.status_code == 400
assert "only supports English" in response.text
def test_transcriptions_with_timestamp_offset(self):
"""Test transcription with timestamp offset parameter."""
url = get_modal_transcript_url()
headers = get_auth_headers()
with httpx.Client(timeout=60.0) as client:
# Test with timestamp offset
response = client.post(
f"{url}/v1/audio/transcriptions-from-url",
json={
"audio_file_url": TEST_AUDIO_URL,
"model": get_model_name(),
"language": "en",
"timestamp_offset": 10.0, # Add 10 second offset
},
headers=headers,
)
assert response.status_code == 200, f"Request failed: {response.text}"
result = response.json()
# Verify response structure
assert "text" in result
assert "words" in result
assert len(result["words"]) > 0, "Words list must not be empty"
# Verify that timestamps have been offset
for word in result["words"]:
# All timestamps should be >= 10.0 due to offset
assert (
word["start"] >= 10.0
), f"Word start time {word['start']} should be >= 10.0"
assert (
word["end"] >= 10.0
), f"Word end time {word['end']} should be >= 10.0"