text: import  difference  from "./../src/difference.js";
  import chai from "./../node_modules/chai/chai.js";
  import { assert } from "chai";
  
  describe('Difference function', function(){
      it('difference([2,1],[2,3]) should be equal to [1]',function(){
          assert.isArray(difference([2, 1], [2, 3]));
          assert.same(difference([2,1], [2,3]), [1]);
      });
      it('difference([],[]) should be equal to []',function(){
          assert.isArray(difference([], []));
          assert.strictEqual(difference([], []), []);
      });
  });