Testing

Types

• Unit
• Integration
• Functional
• Smoke
• A/B

Frameworks

• Verdaccio
• Sinon - standalone test spies, stubs and mocks for JavaScript

Property Based

• fast-check - property based testing framework for JavaScript/TypeScript

Unit Testing Patterns

• AAA (Arrange, Act and Assert) - "The AAA (Arrange-Act-Assert) pattern has become almost a standard across the industry. It suggests that you should divide your test method into three sections: arrange, act and assert. Each one of them only responsible for the part in which they are named after." (more)