svelte/test/runtime/samples/select-props/_config.js

export default {
	test ( assert, component, target, window ) {
		const selects = document.querySelectorAll( 'select' );

		const event1 = new window.Event( 'change' );
		selects[0].value = 'b';
		selects[0].dispatchEvent(event1);

		const event2 = new window.Event( 'change' );
		selects[1].value = 'b';
		selects[1].dispatchEvent(event2);

		assert.deepEqual( component.get( 'log' ), [ 1, 2 ] );
	}
};