# Test Environment

## Runtime Requirements

| Requirement | Specification |
|-------------|--------------|
| Python | 3.10+ |
| OS | Linux or macOS (POSIX filesystem paths) |
| GPU | Optional — ONNX inference falls back to CPUExecutionProvider |
| Disk | Temp directory for fixture data (~500MB for augmentation output) |
| Network | Not required (all tests are offline) |

## Execution Modes

Tests MUST be runnable in two ways:

### 1. Local (no Docker) — primary mode
Run directly on the host machine. Required for macOS development where Docker has GPU/performance limitations.

```bash
scripts/run-tests-local.sh
```

### 2. Docker — CI/portable mode
Run inside a container for reproducible CI environments (Linux-based CI runners).

```bash
docker compose -f docker-compose.test.yml up --build --abort-on-container-exit
```

Both modes run the same pytest suite; the only difference is the runtime environment.

## Dependencies

All test dependencies are a subset of the production `requirements.txt` plus pytest:

| Package | Purpose |
|---------|---------|
| pytest | Test runner |
| albumentations | Augmentation tests |
| opencv-python-headless | Image I/O (headless — no GUI) |
| numpy | Array operations |
| onnxruntime | ONNX inference (CPU fallback) |
| cryptography | Encryption tests |
| msgpack | Annotation queue message tests |
| PyYAML | Config/YAML generation tests |

## Fixture Data

| Fixture | Location | Size |
|---------|----------|------|
| 100 annotated images | `_docs/00_problem/input_data/dataset/images/` | ~50MB |
| 100 YOLO labels | `_docs/00_problem/input_data/dataset/labels/` | ~10KB |
| ONNX model | `_docs/00_problem/input_data/azaion.onnx` | 81MB |
| Class definitions | `classes.json` (project root) | 2KB |

## Test Isolation

- Each test creates a temporary directory (via `tmp_path` pytest fixture) for filesystem operations
- No tests modify the actual `/azaion/` directory structure
- No tests require running external services (RabbitMQ, Azaion API, S3 CDN)
- Constants paths are patched/overridden to point to temp directories during tests

## Excluded (Require External Services)

| Component | Service Required | Reason for Exclusion |
|-----------|-----------------|---------------------|
| API upload/download | Azaion REST API | No mock server; real API has auth |
| CDN upload/download | S3-compatible CDN | No mock S3; real CDN has credentials |
| Queue consumption | RabbitMQ Streams | No mock broker; rstream requires live connection |
| TensorRT inference | NVIDIA GPU + TensorRT | Hardware-specific; cannot run in CI without GPU |