import test from 'ava' ; import { empty as emptyMap } from '@collectable/map' ; import { empty , isSet } from '../../src' ; test ( 'returns true if the argument is an instance of a Collectable.js Set class' , t => { t . true ( isSet ( empty ( ) ) ) ; } ) ; test ( 'returns false if the argument is not an instance of a Collectable.js Set class' , t => { t . false ( isSet ( emptyMap ( ) ) ) ; } ) ;