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