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llama-stack-mirror/tests/unit
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Ashwin Bharambe 08b4a1deb3
feat(tests): introduce inference record/replay to increase test reliability (#2941) 
Implements a comprehensive recording and replay system for inference API
calls that eliminates dependency on online inference providers during
testing. The system treats inference as deterministic by recording real
API responses and replaying them in subsequent test runs. Applies to
OpenAI clients (which should cover many inference requests) as well as
Ollama AsyncClient.

For storing, we use a hybrid system: Sqlite for fast lookups and JSON
files for easy greppability / debuggability.

As expected, tests become much much faster (more than 3x in just
inference testing.)

```bash
LLAMA_STACK_TEST_INFERENCE_MODE=record LLAMA_STACK_TEST_RECORDING_DIR=<...> \
  uv run pytest -s -v tests/integration/inference \
  --stack-config=starter \
  -k "not( builtin_tool or safety_with_image or code_interpreter or test_rag )" \
  --text-model="ollama/llama3.2:3b-instruct-fp16" \
  --embedding-model=sentence-transformers/all-MiniLM-L6-v2
```

```bash
LLAMA_STACK_TEST_INFERENCE_MODE=replay LLAMA_STACK_TEST_RECORDING_DIR=<...> \
  uv run pytest -s -v tests/integration/inference \
  --stack-config=starter \
  -k "not( builtin_tool or safety_with_image or code_interpreter or test_rag )" \
  --text-model="ollama/llama3.2:3b-instruct-fp16" \
  --embedding-model=sentence-transformers/all-MiniLM-L6-v2
```

- `LLAMA_STACK_TEST_INFERENCE_MODE`: `live` (default), `record`, or
`replay`
- `LLAMA_STACK_TEST_RECORDING_DIR`: Storage location (must be specified
for record or replay modes)
2025-07-29 12:41:31 -07:00
..
cli fix: stop image_name from being cast to an integer (#2759) 2025-07-15 09:44:21 -07:00
distribution feat(tests): introduce inference record/replay to increase test reliability (#2941) 2025-07-29 12:41:31 -07:00
files feat: enable auth for LocalFS Files Provider (#2773) 2025-07-18 19:11:01 -07:00
models chore(test): migrate unit tests from unittest to pytest for system prompt (#2789) 2025-07-18 11:54:02 +02:00
providers fix(openai-compat): restrict developer/assistant/system/tool messages to text-only content (#2932) 2025-07-28 10:36:34 -07:00
rag fix: search mode validation for rag query (#2857) 2025-07-23 11:25:12 -07:00
registry chore: default to pytest asyncio-mode=auto (#2730) 2025-07-11 13:00:24 -07:00
server fix: Fix unit tests CI and failing tests (#2928) 2025-07-28 10:07:26 -07:00
utils chore: default to pytest asyncio-mode=auto (#2730) 2025-07-11 13:00:24 -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: default to pytest asyncio-mode=auto (#2730) 2025-07-11 13:00:24 -07:00
README.md test: Measure and track code coverage (#2636) 2025-07-18 18:08:36 +02:00

README.md

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