jira/apps/api/plane/tests/README.md

Plane Tests

This directory contains tests for the Plane application. The tests are organized using pytest.

Test Structure

Tests are organized into the following categories:

• Unit tests: Test individual functions or classes in isolation.
• Contract tests: Test interactions between components and verify API contracts are fulfilled.
  • API tests: Test the external API endpoints (under /api/v1/).
  • App tests: Test the web application API endpoints (under /api/).
• Smoke tests: Basic tests to verify that the application runs correctly.

API vs App Endpoints

Plane has two types of API endpoints:

1. External API (plane.api):

   • Available at /api/v1/ endpoint
   • Uses API key authentication (X-Api-Key header)
   • Designed for external API contracts and third-party access
   • Tests use the api_key_client fixture for authentication
   • Test files are in contract/api/

2. Web App API (plane.app):

   • Available at /api/ endpoint
   • Uses session-based authentication (CSRF disabled)
   • Designed for the web application frontend
   • Tests use the session_client fixture for authentication
   • Test files are in contract/app/

Running Tests

To run all tests:

python -m pytest

To run specific test categories:

# Run unit tests
python -m pytest plane/tests/unit/

# Run API contract tests
python -m pytest plane/tests/contract/api/

# Run App contract tests
python -m pytest plane/tests/contract/app/

# Run smoke tests
python -m pytest plane/tests/smoke/

For convenience, we also provide a helper script:

# Run all tests
./run_tests.py

# Run only unit tests
./run_tests.py -u

# Run contract tests with coverage report
./run_tests.py -c -o

# Run tests in parallel
./run_tests.py -p

Fixtures

The following fixtures are available for testing:

• api_client: Unauthenticated API client
• create_user: Creates a test user
• api_token: API token for the test user
• api_key_client: API client with API key authentication (for external API tests)
• session_client: API client with session authentication (for app API tests)
• plane_server: Live Django test server for HTTP-based smoke tests

Writing Tests

When writing tests, follow these guidelines:

1. Place tests in the appropriate directory based on their type.
2. Use the correct client fixture based on the API being tested:
   • For external API (/api/v1/), use api_key_client
   • For web app API (/api/), use session_client
   • For smoke tests with real HTTP, use plane_server
3. Use the correct URL namespace when reverse-resolving URLs:
   • For external API, use reverse("api:endpoint_name")
   • For web app API, use reverse("endpoint_name")
4. Add the @pytest.mark.django_db decorator to tests that interact with the database.
5. Add the appropriate markers (@pytest.mark.contract, etc.) to categorize tests.

Test Fixtures

Common fixtures are defined in:

• conftest.py: General fixtures for authentication, database access, etc.
• conftest_external.py: Fixtures for external services (Redis, Elasticsearch, Celery)
• factories.py: Test factories for easy model instance creation

Best Practices

When writing tests, follow these guidelines:

1. Use pytest's assert syntax instead of Django's self.assert* methods.
2. Add markers to categorize tests:

   @pytest.mark.unit
   @pytest.mark.contract
   @pytest.mark.smoke
   

3. Use fixtures instead of setUp/tearDown methods for cleaner, more reusable test code.
4. Mock external dependencies with the provided fixtures to avoid external service dependencies.
5. Write focused tests that verify one specific behavior or edge case.
6. Keep test files small and organized by logical components or endpoints.
7. Target 90% code coverage for models, serializers, and business logic.

External Dependencies

Tests for components that interact with external services should:

1. Use the mock_redis, mock_elasticsearch, and mock_celery fixtures for unit and most contract tests.
2. For more comprehensive contract tests, use Docker-based test containers (optional).

Coverage Reports

Generate a coverage report with:

python -m pytest --cov=plane --cov-report=term --cov-report=html

This creates an HTML report in the htmlcov/ directory.

Migration from Old Tests

Some tests are still in the old format in the api/ directory. These need to be migrated to the new contract test structure in the appropriate directories.