JestTestGen

🚀 Try jest-test-gen as a VS Code Extension

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

About

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

Preview

Basic ES6 Class example:

React Component example:

Usage

Installation

run npm i -g jest-test-gen

Basic Usage

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

Development

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

Release

run npm run build run npm publish

Changelog

v1.4.2

• 15 add support for export as syntax

  Thanks @yiminghe

v1.4.2

• 14 fix non arrow function assignement expression parsing Thanks @yiminghe

v1.4.0

• 6 add an option --fileSuffix to specify a custom generated file name suffix Thanks @eliorivero

v1.3.2

• return test output filename from run() function

v1.3.0

• 2 support for ts and tsx components with prop types parsing

• 5 add an option --outputDir to specify a custom output directory relative to the cwd() or absolute path

v1.1.0

• 3 Support for static methods in classes

• 4 .toBeDefined instead of (or in addition to) .toBeTruthy

• 6 migrate tests from jasmine to Jest, makes a lot of sense for this project

v1.0.0

• Adds support for parsing React class + functional components to generate snapshot test

v0.0.6

• more output format tweaks

v0.0.5

• enhancements to output format

v0.0.4

• Fixes to output format
• added debug for logging in dev

v0.0.3

list typescript as dependency

v0.0.2

Update docs

v0.0.1

Initial release