powerSet.test.js

import powerSet from '../powerSet';

describe('powerSet', () => {
  it('should calculate power set of given set', () => {
    const powerSets1 = powerSet([1]);
    const powerSets2 = powerSet([1, 2, 3]);

    expect(powerSets1).toEqual([
      [],
      [1],
    ]);

    expect(powerSets2).toEqual([
      [],
      [1],
      [2],
      [1, 2],
      [3],
      [1, 3],
      [2, 3],
      [1, 2, 3],
    ]);
  });
});