org/fxtf/web-animations/#the-keyframe-dictionary',
  assert: [
    'element.animate() should start an animation when keyframes are specified with timing functions',
    'for their easing property. The animation should use the given timing function between consecutive',
    'keyframe offsets.',
  ],
  author: 'Alan Cutter',
});

test(function() {
  assertAnimationStyles([
    {opacity: '0', offset: 0, easing: 'steps(2, start)'},
    {left: '0px', offset: 0},
    {opacity: '0.5', left: '50px'},
  ], {
    0: 