The VS Code extension is the fastest way to generate a unit test file from a source file directly from the IDE

Install jest-test-gen Extension

Automates creation of initial unit test files taking dependencies into account.

Parsing and test generation is avaialable for the following exports:

• Typescript typed React class components 🆕
• Typescript typed Functional components 🆕
• React Functional components 🆕
• React Class based components 🆕
• ES6 Classes default export or named exports
• Exported named functions and arrow functions
• Exported POJOs with methods
• Async functions and methods

This tool will take a js/ts file as input and generate a jest unit test file next to it with all imports mocked and tests stubs for every class method and function exported.

This project is inspired and started as a fork of jasmine-unit-test-generator

Basic ES6 Class example:

React Component example:

run npm i -g jest-test-gen

run jest-test-gen <path-to-file>

It's probably best to:

• add an input file in spec/fixtures folder test.js
• add a snapshot test for the input spec in integration.spec.ts
• verify that the snapshot is actually the wanted test output before commiting the updated snapshot.

Alternavely, you can:

• run npm link
• run npm run build:dev
• run jest-test-gen <option> in your project of choice

run npm run build run npm publish