odin-default-js-exercises/03_reverseString/solution/reverseString-solution.spec.js

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('');
  });
});