Jest Preview Save

Debug your Jest tests. Effortlessly.🛠🖼

Project README

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Jest Preview

Debug your Jest tests. Effortlessly. 🛠🖼

Jest Preview Demo

Try Jest Preview Online. No downloads needed!

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Using Vitest? Try Vitest Preview

Why jest-preview

When writing tests using Jest, we usually debug by reading the HTML code. Sometimes, the HTML is too complicated to visualize the UI in our head. jest-preview previews your Jest tests right in a browser, then you can see your actual UI visually, which helps you write and debug Jest tests faster.

jest-preview is initially designed to work with Jest and react-testing-library. The package is framework-agnostic, and you can use it with any frontend frameworks and testing libraries. For examples:

Features

  • 👀 Preview your actual app's HTML in a browser in milliseconds.
  • 🔄 Auto reload browser when executing preview.debug()`.
  • 💅 Support CSS:
  • 🌄 Support viewing images.

How to use jest-preview in 2 lines of code

+import preview from 'jest-preview';

describe('App', () => {
  it('should work as expected', () => {
    render(<App />);
+    preview.debug();
  });
});

Or:

+import { debug } from 'jest-preview';

describe('App', () => {
  it('should work as expected', () => {
    render(<App />);
+    debug();
  });
});

You also need to start the Jest Preview Server by running the CLI jest-preview. Please continue to read Usage for the details instructions.

Feedback

Your feedback is very important to us. Please help jest-preview becomes a better software by submitting feedback here.

Installation

See the Installation Guide on Jest Preview official website.

Usage

See the Usage Guide on Jest Preview official website.

Advanced configurations

Jest Preview comes with Pre-configured transformation. However, in more advanced use cases where you have custom code transformation, check out the Code Transformation Guide.

Upcoming features

  • Support more css-in-js libraries.
  • Multiple previews.
  • You name it.

Support

Please file an issue, or add a new discussion if you encounter any issues.

You can also mention @JestPreview or @hung_dev on Twitter if you want to have some more discussions or suggestions.

We also have a Discord server: Discord

Contributing

We can't wait to see your contributions. See the Contribution Guide at CONTRIBUTING.md

Contributors ✨

Thanks goes to these wonderful people (emoji key):

Hung Viet Nguyen
Hung Viet Nguyen

💻 📖 💡
Truong Nguyen
Truong Nguyen

💻 📖 💡
Viet Huu Doan
Viet Huu Doan

🎨
HarveyNguyen
HarveyNguyen

⚠️
Matt Murphy
Matt Murphy

📖
Traitanit Huangsri
Traitanit Huangsri

💻
Thanh Son Nguyen
Thanh Son Nguyen

💻 💡 📖
Minh Nguyen
Minh Nguyen

📖
Kyle(Tình Vũ)
Kyle(Tình Vũ)

🐛
Makoto Tateno
Makoto Tateno

📖
Abhishek Rawat
Abhishek Rawat

📖
Huynh Duc Duy
Huynh Duc Duy

💻
Nuno Casteleira
Nuno Casteleira

🐛
sundaycrafts
sundaycrafts

💻
LunduoCai
LunduoCai

🐛
huyenuet
huyenuet

⚠️
Bennett Dams
Bennett Dams

📖
Steven Rosato
Steven Rosato

💡 🐛
nhducit
nhducit

🤔
Benoit GRASSET
Benoit GRASSET

🐛
Sergii Kirianov
Sergii Kirianov

📖 🖋 💻
Kim, Harim
Kim, Harim

📖
Lars Gyrup Brink Nielsen
Lars Gyrup Brink Nielsen

📖 💡
Mike Shi
Mike Shi

📖
Veniamin Krol
Veniamin Krol

📖
Ikko Ashimine
Ikko Ashimine

💻
Pavel Shut
Pavel Shut

🐛
David Z Hao
David Z Hao

🐛
Rohitbels
Rohitbels

💻
Rivaldi Putra
Rivaldi Putra

📖
Long Zhao
Long Zhao

💻

This project follows the all-contributors specification. Contributions of any kind are welcome!

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License

This is open source software

MIT

Sponsors

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Open Source Agenda is not affiliated with "Jest Preview" Project. README Source: nvh95/jest-preview
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