rame composite value should be auto even ' +
                'if effect composite is set');
}, 'Unspecified keyframe composite value when setting effect composite');

test(t => {
  const anim = createDiv(t).animate({ left: '10px', composite: 'replace' });

  anim.effect.composite = 'add';
  const keyframes = anim.effect.getKeyframes();
  assert_equals(keyframes[0].composite, 'replace',
                'specified keyframe composite value should not be overridden ' +
                'by setting effect composi