Intro
Preact Testing Library on GitHub
npm install --save-dev @testing-library/preact
This library is built on top of
DOM Testing Library
which is where most of the logic behind the queries is.
The Problem
You want to write tests for your Preact components so that they avoid including implementation details, and are maintainable in the long run.
This Solution
The Preact Testing Library is a very lightweight solution for testing Preact
components. It provides light utility functions on top of preact/test-utils
,
in a way that encourages better testing practices. Its primary guiding principle
is:
The more your tests resemble the way your software is used, the more confidence they can give you.
See the Dom introduction and React introduction for a more in-depth explanation.
What this library is not:
- A test runner or framework.
- Specific to a testing framework.
We recommend Jest as our preference. You can checkout Using Without Jest if you're looking to use another framework.