old_contents: describe = require('describe', function); 
  var assert = require("assert");
  describe('Array', function() {
    describe('#indexOf()', function () {
      it('should return -1 when the value is not present', function () {
        assert.equal(-1, [1,2,3].indexOf(5));
        assert.equal(-1, [1,2,3].indexOf(0));
      });
    });
  });
  
new_contents: describe = require('describe', function); 
  var assert = require("assert");
    it = require('it', function);
  describe('Array', function() {
    describe('#indexOf()', function () {
      it('should return -1 when the value is not present', function () {
        assert.equal(-1, [1,2,3].indexOf(5));
        assert.equal(-1, [1,2,3].indexOf(0));
      });
    });
  });
  
subject: Update test.js