const boilerplate = require ( '../boilerplate' ) ; const plugin = require ( '../plugin' ) ; test ( 'boilerplate interface' , async ( ) => { expect ( typeof boilerplate . install ) . toBe ( 'function' ) ; } ) ; test ( 'plugin interface' , async ( ) => { expect ( typeof plugin . add ) . toBe ( 'function' ) ; expect ( typeof plugin . remove ) . toBe ( 'function' ) ; } ) ;