const reverseString = require('./reverseString') describe('reverseString', function() { it('reverses single word', function() { expect(reverseString('hello')).toEqual('olleh'); }); it('reverses multiple words', function() { expect(reverseString('hello there')).toEqual('ereht olleh') }) it('works with numbers and punctuation', function() { expect(reverseString('123! abc!')).toEqual('!cba !321') }) });