import { sortBy } from './sortBy';

it('sorts an array of objects by its key', () => {
  const output = sortBy(
    [
      {
        name: 'bbb',
      },
      {
        name: 'aaa',
      },
      {
        name: 'ddd',
      },
      {
        name: 'ccc',
      },
    ],
    'name'
  );

  expect(output.map((v) => v.name)).toEqual(['aaa', 'bbb', 'ccc', 'ddd']);
});

it('sorts an array of objects by its key with a predicate', () => {
  const output = sortBy(
    [
      {
        name: 'cc',
      },
      {
        name: 'bbb',
      },
      {
        name: 'aaaa',
      },
      {
        name: 'd',
      },
    ],
    'name',
    (a, b) => {
      return a.length > b.length ? 1 : -1;
    }
  );

  expect(output.map((v) => v.name)).toEqual(['d', 'cc', 'bbb', 'aaaa']);
});