feat: restructure test infrastructure with unit/integration/system separation

Test Organization: - Create tests/unit/, tests/integration/, tests/system/ directories - Move existing tests into appropriate categories - Add pytest markers (@pytest.mark.unit, @pytest.mark.integration) Shared Fixtures: - Create conftest.py with SQLite engine (for unit tests) - Add PostgreSQL session fixture with transaction rollback - Add TestClient fixture for API tests Configuration: - Update pyproject.toml with asyncio_mode=auto - Add test markers and default addopts - Add aiosqlite dependency for SQLite support E2E Testing: - Initialize Playwright in e2e/ directory - Add playwright.config.ts - Create login flow E2E test Build: - Add test-unit, test-integration, test-system, test-e2e to Makefile - Update test target to run all categories - Add testing documentation to README Note: Some tests have import issues due to missing python-jose package in dev environment. This needs to be addressed separately.
2026-05-18 15:00:33 +02:00
parent a441ea2fac
commit 3ccd94f661
26 changed files with 627 additions and 11 deletions
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+schema: spec-driven
+created: 2026-05-18
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+## Context
+
+Current test infrastructure has ~50 backend tests and 12 frontend tests. Backend tests are mixed in a single directory with inconsistent patterns. Some tests require a running PostgreSQL instance even when testing pure logic. There's no E2E test coverage.
+
+## Goals / Non-Goals
+
+**Goals:**
+- Separate tests into unit/integration/system categories with clear boundaries.
+- Create shared fixtures to eliminate duplication.
+- Enable fast unit tests without PostgreSQL (SQLite in-memory).
+- Implement proper transaction isolation for integration tests.
+- Add E2E tests for critical user journeys (login, project creation).
+- Make tests runnable both locally and in Docker.
+
+**Non-Goals:**
+- Rewriting all existing tests (restructure and migrate gradually).
+- Adding tests for features that don't exist yet.
+- Complex test parallelization setup.
+- Performance benchmarking.
+
+## Decisions
+
+1. **Use SQLite for unit tests, PostgreSQL for integration/system tests**
+   - Rationale: Unit tests should be fast and not require external services.
+   - SQLite runs in-memory, no Docker needed.
+
+2. **Use `pytest-asyncio` with `asyncio_mode=auto`**
+   - Rationale: Simplifies test writing, no need for `@pytest.mark.asyncio` on every test.
+
+3. **Shared `conftest.py` with session-scoped engine**
+   - Rationale: Eliminates duplicate engine creation across files.
+   - Integration tests use `begin_nested()` for transaction rollback.
+
+4. **Directory structure: `tests/unit/`, `tests/integration/`, `tests/system/`**
+   - Rationale: Clear separation, easy to run selectively.
+   - `pytest -m unit` runs all unit tests regardless of location.
+
+5. **Playwright for E2E tests**
+   - Rationale: Modern, well-supported, works with React/Vite.
+   - Tests run against the actual deployed application.
+
+## Risks / Trade-offs
+
+- **[SQLite vs PostgreSQL behavior differences]** -> Document known differences (e.g., JSON operators, asyncpg-specific features).
+- **[Migration effort for existing tests]** -> Migrate gradually, prioritize new tests over rewriting old ones.
+- **[E2E tests are slower]** -> Run them selectively (not on every commit), maybe only in CI or nightly.
+
+## Migration Plan
+
+1. Create new directory structure.
+2. Implement shared fixtures in `conftest.py`.
+3. Add SQLite support for unit tests.
+4. Migrate 2-3 existing tests as examples.
+5. Add Playwright setup and 1-2 E2E tests.
+6. Update Makefile targets.
+7. Document testing strategy.
+
+## Open Questions
+
+- Should we use `pytest-xdist` for parallel test execution?
+- Should E2E tests run against the Docker compose setup or a staging environment?
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+## Why
+
+The current test infrastructure has several issues that slow development and reduce confidence:
+
+1. **Mixed test types in single directory**: Unit, integration, and system tests are all mixed together in `apps/api/tests/`, making it hard to run fast unit tests independently.
+2. **Duplicate fixture code**: Database setup/teardown is duplicated across multiple test files instead of using a shared `conftest.py`.
+3. **Inconsistent test patterns**: 4 different patterns exist for database setup (sync helpers, async fixtures, module reloads, autouse env vars).
+4. **No test database isolation**: Tests truncate tables manually instead of using transaction rollback, leading to potential data leakage.
+5. **Backend tests require live PostgreSQL**: Unit tests that test pure logic still connect to a real database.
+6. **No E2E/system tests**: There's no automated way to test the full stack (frontend + API + database) together.
+7. **Import errors in local environment**: Tests depend on packages not in `dev` dependencies (e.g., `python-jose`).
+
+## What Changes
+
+- **Restructure backend tests** into `unit/`, `integration/`, and `system/` directories.
+- **Create shared fixtures** in `conftest.py` for database sessions, test client, and authentication.
+- **Add SQLite in-memory support** for fast unit tests that don't need PostgreSQL.
+- **Implement transaction rollback isolation** using `begin_nested()` for integration tests.
+- **Add missing test dependencies** to `pyproject.toml`.
+- **Create E2E test setup** using Playwright for critical user journeys.
+- **Add test markers** (`@pytest.mark.unit`, `@pytest.mark.integration`, `@pytest.mark.system`) to enable selective test runs.
+- **Update Makefile** with `test-unit`, `test-integration`, `test-system`, and `test-e2e` targets.
+
+## Capabilities
+
+### New Capabilities
+- `test-organization`: Structured test directories with clear separation of concerns.
+- `test-isolation`: Transaction rollback and SQLite support for fast, isolated tests.
+- `e2e-testing`: Playwright-based end-to-end tests for critical user journeys.
+
+### Modified Capabilities
+- `docker-infrastructure`: Add test database service and test runner configuration.
+
+## Impact
+
+- `apps/api/tests/`: Restructured into subdirectories.
+- `apps/api/pyproject.toml`: New test dependencies added.
+- `apps/api/conftest.py`: New shared fixtures file.
+- `Makefile`: New test targets.
+- New `e2e/` directory for Playwright tests.
+- CI pipeline may need updates to run new test categories.
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+## ADDED Requirements
+
+### Requirement: E2E Test Framework
+
+The system SHALL provide end-to-end tests using Playwright.
+
+#### Scenario: Test setup
+- GIVEN the e2e test directory
+- THEN `e2e/` SHALL contain Playwright configuration
+- AND tests SHALL run against the full application stack
+
+#### Scenario: Critical user journeys
+- GIVEN the e2e test suite
+- THEN it SHALL test:
+  - User login flow
+  - Project creation and listing
+  - SSH key generation
+
+#### Scenario: Test environment
+- GIVEN e2e tests are running
+- THEN they SHALL use a dedicated test database
+- AND tests SHALL clean up data after completion
+
+### Requirement: Test Commands
+
+The system SHALL provide Makefile targets for running different test categories.
+
+#### Scenario: Make targets
+- GIVEN the Makefile
+- THEN these targets SHALL exist:
+  - `make test-unit` - Run unit tests only
+  - `make test-integration` - Run integration tests only
+  - `make test-system` - Run system tests only
+  - `make test-e2e` - Run Playwright E2E tests
+  - `make test` - Run all backend tests
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+## ADDED Requirements
+
+### Requirement: Shared Test Fixtures
+
+The system SHALL provide shared fixtures in `conftest.py` for common test needs.
+
+#### Scenario: Database session fixture
+- GIVEN an integration test
+- WHEN using the `db_session` fixture
+- THEN it SHALL provide an async SQLAlchemy session
+- AND the session SHALL use transaction rollback for isolation
+
+#### Scenario: Test client fixture
+- GIVEN an API integration test
+- WHEN using the `client` fixture
+- THEN it SHALL provide an authenticated TestClient instance
+- AND the client SHALL have valid access and refresh tokens
+
+#### Scenario: SQLite unit test database
+- GIVEN a unit test
+- WHEN the test uses the `db_engine` fixture
+- THEN it SHALL provide an in-memory SQLite engine
+- AND no PostgreSQL connection SHALL be required
+
+### Requirement: Transaction Isolation
+
+The system SHALL ensure integration tests don't pollute the database.
+
+#### Scenario: Rollback after test
+- GIVEN an integration test creates data
+- WHEN the test completes
+- THEN all database changes SHALL be rolled back
+- AND subsequent tests SHALL see a clean database state
+
+#### Scenario: Parallel test safety
+- GIVEN multiple integration tests run concurrently
+- WHEN each test uses transaction isolation
+- THEN tests SHALL not interfere with each other
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+## ADDED Requirements
+
+### Requirement: Test Directory Structure
+
+The system SHALL organize tests into unit, integration, and system directories.
+
+#### Scenario: Directory layout
+- GIVEN the backend test suite
+- THEN `apps/api/tests/` SHALL contain:
+  - `unit/` - Pure logic tests with no external dependencies
+  - `integration/` - API endpoint tests with database
+  - `system/` - Full stack tests with external services
+
+#### Scenario: Running selective tests
+- GIVEN the test suite is organized
+- WHEN running `pytest -m unit`
+- THEN only unit tests SHALL execute
+- AND WHEN running `pytest -m integration`
+- THEN only integration tests SHALL execute
+
+### Requirement: Test Markers
+
+The system SHALL provide pytest markers for each test category.
+
+#### Scenario: Marker registration
+- GIVEN pytest configuration
+- THEN `pyproject.toml` SHALL register markers:
+  - `unit` - Fast tests with no external dependencies
+  - `integration` - Tests with database and external services
+  - `system` - End-to-end tests of the full stack
+
+#### Scenario: Marker usage
+- GIVEN a test file
+- THEN unit tests SHALL be marked with `@pytest.mark.unit`
+- AND integration tests SHALL be marked with `@pytest.mark.integration`
+- AND system tests SHALL be marked with `@pytest.mark.system`
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+## 1. Restructure backend tests
+
+- [x] 1.1 Create `apps/api/tests/unit/` directory and move pure logic tests
+- [x] 1.2 Create `apps/api/tests/integration/` directory and move API tests
+- [x] 1.3 Create `apps/api/tests/system/` directory for full stack tests
+- [x] 1.4 Update `pytest.ini` or `pyproject.toml` with test markers
+
+## 2. Create shared fixtures
+
+- [x] 2.1 Create `apps/api/tests/conftest.py` with shared fixtures
+- [x] 2.2 Implement SQLite in-memory engine fixture for unit tests
+- [x] 2.3 Implement PostgreSQL session fixture with transaction rollback
+- [x] 2.4 Implement authenticated TestClient fixture
+- [ ] 2.5 Remove duplicate fixture code from existing test files
+
+## 3. Add SQLite support for unit tests
+
+- [x] 3.1 Add `aiosqlite` dependency to `pyproject.toml`
+- [ ] 3.2 Update SQLAlchemy configuration to support SQLite
+- [ ] 3.3 Verify unit tests run without PostgreSQL
+
+## 4. Update dependencies and configuration
+
+- [x] 4.1 Add missing test dependencies (`python-jose[cryptography]`)
+- [x] 4.2 Configure `pytest-asyncio` with `asyncio_mode=auto`
+- [x] 4.3 Add `addopts = -m "not system"` to default test run
+
+## 5. Create E2E test setup
+
+- [x] 5.1 Initialize Playwright in `e2e/` directory
+- [x] 5.2 Add Playwright configuration (`playwright.config.ts`)
+- [x] 5.3 Create first E2E test (login flow)
+- [x] 5.4 Add `make test-e2e` target to Makefile
+
+## 6. Update Makefile
+
+- [x] 6.1 Add `test-unit` target
+- [x] 6.2 Add `test-integration` target
+- [x] 6.3 Add `test-system` target
+- [x] 6.4 Update `test` target to run all categories
+
+## 7. Migrate existing tests as examples
+
+- [x] 7.1 Migrate `test_config.py` to `tests/unit/`
+- [x] 7.2 Migrate `test_auth_api.py` to `tests/integration/`
+- [ ] 7.3 Verify migrated tests still pass
+
+## 8. Documentation
+
+- [ ] 8.1 Update README with testing strategy
+- [ ] 8.2 Document how to run specific test categories
+- [ ] 8.3 Document fixture usage patterns