import * as assert from 'assert' ; import CustomElement from './main.svelte' ; export default function ( target ) { new CustomElement ( { target } ) ; const icon = target . querySelector ( 'custom-element' ) . shadowRoot . querySelector ( '.icon' ) ; const before = getComputedStyle ( icon , '::before' ) ; assert . equal ( before . content , JSON . stringify ( String . fromCharCode ( 0xff ) ) ) ; }