AVA time calculation

test.js

import test from 'ava';
import sinon from 'sinon';

let clock;

test('Before', t => {
	clock = sinon.useFakeTimers(new Date(2015, 10, 10, 15, 15, 15).getTime());

	t.end();
});

test('After', t => {
	clock.restore();

	t.end();
});