svelte/test/runtime/samples/component-events-each/_config.js

export default {
	data: {
		items: [ 'a', 'b', 'c' ]
	},

	html: `
		<div><button>click me</button><button>click me</button><button>click me</button></div>
	`,

	test ( assert, component, target, window ) {
		const buttons = target.querySelectorAll( 'button' );

		const clicks = [];

		component.on( 'foo', item => {
			clicks.push( item );
		});

		const event = new window.MouseEvent( 'click' );

		buttons[0].dispatchEvent( event );
		buttons[2].dispatchEvent( event );

		assert.deepEqual( clicks, [ 'a', 'c' ]);
		component.destroy();
	}
};