export default { props : { things : [ ] } , test ( { assert , component , target , raf } ) { const div = target . querySelector ( 'div' ) ; component . things = [ 'a' , 'b' , 'c' ] ; raf . tick ( 200 ) ; assert . equal ( div . foo , 0.5 ) ; raf . tick ( 300 ) ; assert . equal ( div . foo , 0.25 ) ; raf . tick ( 400 ) ; assert . equal ( div . foo , 0 ) ; raf . tick ( 500 ) ; } } ;