text: const { expect } = require('chai');
  const { selectionSort, swap } = require('../problems/02-selection-sort');
  
  describe('swap()', () => {
    // it should accept an array and two indices as args
  
    it('should swap the elements at the given indices, mutating the original array', () => {
      let array1 = ['a', 'b', 'c'];
      swap(array1, 0, 2);
      expect(array1).to.eql(['c', 'b', 'a']);
  
      let array2 = ['a', 'b', 'c'];
      swap(array2, 1, 0);
      expect(array2).to.eql(['b', 'a', 'c']);
    });
  });
  
  describe('selectionSort()', () => {
    // it should accept an array of numbers as an arg
  
    it('should sort the elements of the array in increasing order, in-place', () => {
      let array = [2, -1, 4, 3, 7, 3];
      selectionSort(array);
      expect(array).to.eql([-1, 2, 3, 3, 4, 7]);
    });
  });