Jest Preset Default
Default Jest preset for WordPress development.
Installation
Install the module
npm install @wordpress/jest-preset-default --save-dev
Note: This package requires Node.js 12.0.0 or later. It is not compatible with older versions.
Setup
jest.config.json
or jest
field in package.json
Via {
"preset": "@wordpress/jest-preset-default"
}
Usage
Brief explanations of options included
-
moduleNameMapper
- allcss
andscss
files containing CSS styles will be stubbed out. -
modulePaths
- the root dir of the project is used as a location to search when resolving modules. -
setupFiles
- runs code before each test which sets up global variables required in the testing environment. -
setupFilesAfterEnv
- runs code which adds improved support forConsole
object andReact
components to the testing framework before each test. -
snapshotSerializers
- makes it possible to use snapshot tests onEnzyme
wrappers. -
testMatch
- includes/test/
subfolder in addition to the glob patterns Jest uses to detect test files. It detects only test files containing.js
(or.ts
) suffix. It doesn't match files with.spec.js
suffix. -
timers
- use of fake timers for functions such assetTimeout
is enabled. -
transform
- keeps the default babel-jest transformer. -
verbose
- each individual test won't be reported during the run.