@wordpress/scripts/scripts/test-unit-jest.js

Collection of reusable scripts for WordPress development.

// Do this as the first thing so that any code reading it knows the right env.
process.env.BABEL_ENV = 'test';
process.env.NODE_ENV = 'test';

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
// terminate the Node.js process with a non-zero exit code.
process.on( 'unhandledRejection', ( err ) => {
	throw err;
} );

/**
 * External dependencies
 */
const jest = require( 'jest' );

/**
 * Internal dependencies
 */
const { getJestOverrideConfigFile, getArgsFromCLI } = require( '../utils' );

const configFile = getJestOverrideConfigFile( 'unit' );

const config = configFile
	? [ '--config', JSON.stringify( require( configFile ) ) ]
	: [];

jest.run( [ ...config, ...getArgsFromCLI() ] );