svelte/test/runtime/samples/binding-input-with-event/_config.js

export default {
	data: {
		a: 42
	},

	test ( assert, component, target, window ) {
		const input = target.querySelector( 'input' );
		assert.equal( input.value, '42' );

		const event = new window.Event( 'input' );

		input.value = 43;
		input.dispatchEvent( event );

		assert.equal( input.value, '43' );
		assert.equal( component.get( 'a' ), 43 );

		component.destroy();
	}
};