const palindromes = require('./palindromes') describe('palindromes', () => { test('works with single words', () => { expect(palindromes('racecar')).toBe(true); }); test('works with punctuation ', () => { expect(palindromes('racecar!')).toBe(true); }); test('works with upper-case letters ', () => { expect(palindromes('Racecar!')).toBe(true); }); test('works with multiple words', () => { expect(palindromes('A car, a man, a maraca.')).toBe(true); }); test('works with multiple words', () => { expect(palindromes('Animal loots foliated detail of stool lamina.')).toBe(true); }); test('doesn\'t just always return true', () => { expect(palindromes('ZZZZ car, a man, a maracaz.')).toBe(false); }); test('works with numbers in a string', () => { expect(palindromes('rac3e3car')).toBe(true); }); test('works with unevenly spaced numbers in a string', () => { expect(palindromes('r3ace3car')).toBe(false); }); });