Testing

Comprehensive testing guide for Migration Script Runner.

Table of contents

  1. Overview
  2. Testing Standards
    1. Coverage Requirements
    2. Test Types
  3. Quick Reference
  4. Testing Guides
    1. Mutation Testing

Overview

MSR maintains 100% test coverage across all metrics. This section covers testing standards, tools, and best practices for both the framework itself and your migrations.

Testing Standards

Coverage Requirements

  • 100% coverage required for all metrics:
    • Statements: 100%
    • Branches: 100%
    • Functions: 100%
    • Lines: 100%

Test Types

  1. Unit Tests - Test individual components in isolation
  2. Integration Tests - Test component interactions
  3. Mutation Tests - Verify test quality with Stryker

Quick Reference

Task Command
Run all tests npm test
Run with coverage npm run test:coverage
Run unit tests npm run test:unit
Run integration tests npm run test:integration
Run mutation tests npm run test:mutation
Run specific test npm run test:one -- path/to/test.ts

Testing Guides

Mutation Testing

In-depth guide to mutation testing with Stryker:

  • What is mutation testing
  • Running mutation tests
  • Understanding mutation scores
  • Interpreting results

Table of contents