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Aniworld/Docs/TESTING.md
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# Testing Documentation
## Document Purpose
This document describes the testing strategy, guidelines, and practices for the Aniworld project.
### What This Document Contains
- **Testing Strategy**: Overall approach to quality assurance
- **Test Categories**: Unit, integration, API, performance, security tests
- **Test Structure**: Organization of test files and directories
- **Writing Tests**: Guidelines for writing effective tests
- **Fixtures and Mocking**: Shared test utilities and mock patterns
- **Running Tests**: Commands and configurations
- **Coverage Requirements**: Minimum coverage thresholds
- **CI/CD Integration**: How tests run in automation
- **Test Data Management**: Managing test fixtures and data
- **Best Practices**: Do's and don'ts for testing
### What This Document Does NOT Contain
- Production deployment (see [DEPLOYMENT.md](DEPLOYMENT.md))
- Security audit procedures (see [SECURITY.md](SECURITY.md))
- Bug tracking and issue management
- Performance benchmarking results
### Target Audience
- Developers writing tests
- QA Engineers
- CI/CD Engineers
- Code reviewers
---
## Sections to Document
1. Testing Philosophy
- Test pyramid approach
- Quality gates
2. Test Categories
- Unit Tests (`tests/unit/`)
- Integration Tests (`tests/integration/`)
- API Tests (`tests/api/`)
- Frontend Tests (`tests/frontend/`)
- Performance Tests (`tests/performance/`)
- Security Tests (`tests/security/`)
3. Test Structure and Naming
- File naming conventions
- Test function naming
- Test class organization
4. Running Tests
- pytest commands
- Running specific tests
- Verbose output
- Coverage reports
5. Fixtures and Conftest
- Shared fixtures
- Database fixtures
- Mock services
6. Mocking Guidelines
- What to mock
- Mock patterns
- External service mocks
### Mocking the Download Queue
Use `MockQueueRepository` for testing download queue functionality:
```python
from src.server.models.download import DownloadItem, EpisodeIdentifier
class MockQueueRepository:
def __init__(self):
self._items: Dict[str, DownloadItem] = {}
```
### Testing SetupService
SetupService handles series key resolution from folder names during library setup. Test file: `tests/unit/test_setup_service.py`.
Key methods tested:
- `_extract_year_from_folder_name()` — parses `(YYYY)` suffix
- `_extract_title_from_folder_name()` — strips year suffix
- `_resolve_key_via_search()` — resolves provider key via fuzzy title matching
```python
@pytest.mark.asyncio
async def test_returns_key_when_single_exact_match(self):
"""Search returns 1 result with same name → returns key."""
mock_series_app = AsyncMock()
mock_series_app.search.return_value = [
{'title': 'Attack on Titan', 'link': '/anime/stream/attack-on-titan'}
]
with patch('src.server.services.setup_service.get_series_app', return_value=mock_series_app):
result = await SetupService._resolve_key_via_search("Attack on Titan")
assert result == 'attack-on-titan'
```
### Mocking aiohttp Sessions
When testing code that uses `aiohttp.ClientSession`:
```python
from unittest.mock import AsyncMock, MagicMock, patch
from aiohttp import ClientSession
# Mock aiohttp session for testing
class MockAiohttpSession:
def __init__(self):
self.closed = False
async def close(self):
self.closed = True
def get(self, url, **kwargs):
mock_response = AsyncMock()
mock_response.status = 200
mock_response.json = AsyncMock(return_value={"data": "test"})
mock_response.__aenter__ = AsyncMock(return_value=mock_response)
mock_response.__aexit__ = AsyncMock(return_value=None)
return mock_response
# Use in fixture
@pytest.fixture
async def mock_tmdb_session():
session = MockAiohttpSession()
yield session
# Cleanup verification
assert session.closed, "Session was not closed"
```
**Key points:**
- Always verify `session.closed` is `True` after context manager exits
- Mock `__aenter__` and `__aexit__` for response context managers
- Set `closed = False` on mock session for unclosed warning tests
7. Coverage Requirements
8. CI/CD Integration
9. Writing Good Tests
- Arrange-Act-Assert pattern
- Test isolation
- Edge cases
10. Common Pitfalls to Avoid