llama-stack-mirror/tests/unit
Eric Huang e721ca9730 chore: introduce write queue for inference_store
# What does this PR do?
Adds a write worker queue for writes to inference store. This avoids overwhelming request processing with slow inference writes.

## Test Plan

Benchmark:
```
cd /docs/source/distributions/k8s-benchmark
# start mock server
python openai-mock-server.py --port 8000
# start stack server
uv run --with llama-stack python -m llama_stack.core.server.server docs/source/distributions/k8s-benchmark/stack_run_config.yaml
# run benchmark script
uv run python3 benchmark.py --duration 120 --concurrent 50 --base-url=http://localhost:8321/v1/openai/v1 --model=vllm-inference/meta-llama/Llama-3.2-3B-Instruct
```


Before:

============================================================
BENCHMARK RESULTS

Response Time Statistics:
  Mean: 1.111s
  Median: 0.982s
  Min: 0.466s
  Max: 15.190s
  Std Dev: 1.091s

Percentiles:
  P50: 0.982s
  P90: 1.281s
  P95: 1.439s
  P99: 5.476s

Time to First Token (TTFT) Statistics:
  Mean: 0.474s
  Median: 0.347s
  Min: 0.175s
  Max: 15.129s
  Std Dev: 0.819s

TTFT Percentiles:
  P50: 0.347s
  P90: 0.661s
  P95: 0.762s
  P99: 2.788s

Streaming Statistics:
  Mean chunks per response: 67.2
  Total chunks received: 122154
============================================================
Total time: 120.00s
Concurrent users: 50
Total requests: 1919
Successful requests: 1819
Failed requests: 100
Success rate: 94.8%
Requests per second: 15.16

Errors (showing first 5):
  Request error:
  Request error:
  Request error:
  Request error:
  Request error:
Benchmark completed.
Stopping server (PID: 679)...
Server stopped.


After:

============================================================
BENCHMARK RESULTS

Response Time Statistics:
  Mean: 1.085s
  Median: 1.089s
  Min: 0.451s
  Max: 2.002s
  Std Dev: 0.212s

Percentiles:
  P50: 1.089s
  P90: 1.343s
  P95: 1.409s
  P99: 1.617s

Time to First Token (TTFT) Statistics:
  Mean: 0.407s
  Median: 0.361s
  Min: 0.182s
  Max: 1.178s
  Std Dev: 0.175s

TTFT Percentiles:
  P50: 0.361s
  P90: 0.644s
  P95: 0.744s
  P99: 0.932s

Streaming Statistics:
  Mean chunks per response: 66.8
  Total chunks received: 367240
============================================================
Total time: 120.00s
Concurrent users: 50
Total requests: 5495
Successful requests: 5495
Failed requests: 0
Success rate: 100.0%
Requests per second: 45.79
Benchmark completed.
Stopping server (PID: 97169)...
Server stopped.
2025-09-10 11:50:06 -07:00
..
cli chore(rename): move llama_stack.distribution to llama_stack.core (#2975) 2025-07-30 23:30:53 -07:00
distribution feat!: Migrate Vector DB IDs to Vector Store IDs (breaking change) (#3253) 2025-09-05 15:40:34 +02:00
files chore(files tests): update files integration tests and fix inline::localfs (#3195) 2025-08-20 14:22:40 -04:00
models chore(test): migrate unit tests from unittest to pytest for system prompt (#2789) 2025-07-18 11:54:02 +02:00
prompts/prompts feat: Adding OpenAI Prompts API (#3319) 2025-09-08 11:05:13 -04:00
providers chore: update the groq inference impl to use openai-python for openai-compat functions (#3348) 2025-09-06 15:36:27 -07:00
rag fix: pre-commit issues: non executable shebang file and removal of @pytest.mark.asyncio decorator (#3397) 2025-09-10 15:27:35 +02:00
registry chore(rename): move llama_stack.distribution to llama_stack.core (#2975) 2025-07-30 23:30:53 -07:00
server feat: Add Kubernetes auth provider to use SelfSubjectReview and kubernetes api server (#2559) 2025-09-08 11:25:10 +02:00
utils chore: introduce write queue for inference_store 2025-09-10 11:50:06 -07:00
__init__.py chore: Add fixtures to conftest.py (#2067) 2025-05-06 13:57:48 +02:00
conftest.py chore: block network access from unit tests (#2732) 2025-07-12 16:53:54 -07:00
fixtures.py chore(rename): move llama_stack.distribution to llama_stack.core (#2975) 2025-07-30 23:30:53 -07:00
README.md test: Measure and track code coverage (#2636) 2025-07-18 18:08:36 +02:00

Llama Stack Unit Tests

Unit Tests

Unit tests verify individual components and functions in isolation. They are fast, reliable, and don't require external services.

Prerequisites

  1. Python Environment: Ensure you have Python 3.12+ installed
  2. uv Package Manager: Install uv if not already installed

You can run the unit tests by running:

./scripts/unit-tests.sh [PYTEST_ARGS]

Any additional arguments are passed to pytest. For example, you can specify a test directory, a specific test file, or any pytest flags (e.g., -vvv for verbosity). If no test directory is specified, it defaults to "tests/unit", e.g:

./scripts/unit-tests.sh tests/unit/registry/test_registry.py -vvv

If you'd like to run for a non-default version of Python (currently 3.12), pass PYTHON_VERSION variable as follows:

source .venv/bin/activate
PYTHON_VERSION=3.13 ./scripts/unit-tests.sh

Test Configuration

  • Test Discovery: Tests are automatically discovered in the tests/unit/ directory
  • Async Support: Tests use --asyncio-mode=auto for automatic async test handling
  • Coverage: Tests generate coverage reports in htmlcov/ directory
  • Python Version: Defaults to Python 3.12, but can be overridden with PYTHON_VERSION environment variable

Coverage Reports

After running tests, you can view coverage reports:

# Open HTML coverage report in browser
open htmlcov/index.html  # macOS
xdg-open htmlcov/index.html  # Linux
start htmlcov/index.html  # Windows