old_contents: var assert = require("assert");
  var discountCalculator = require("../discount");
  
  describe("discount Calculator", function()
  {
      it("should have discount function", function()
      {
          assert.equal(discountCalculator.discount instanceof Function, true,
          "typeof discount: " + typeof discountCalculator.discount);
      });
  });
  
  describe("discount function", function()
  {
  	it("discount should return 0 with no args ", function()
  	{
  		var discount = discountCalculator.discount();
  		assert.equal(discount, 0, discount + "");
  	});
  })
new_contents: var assert = require("assert");
  var discountCalculator = require("../discount");
  
  describe("discount Calculator", function()
  {
      it("should have discount function", function()
      {
          assert.equal(discountCalculator.discount instanceof Function, true,
          "typeof discount: " + typeof discountCalculator.discount);
      });
  });
  
  describe("discount function", function()
  {
  	it("discount should return 0 with no args ", function()
  	{
  		var discount = discountCalculator.discount();
  		assert.equal(discount, 0, discount + "");
  	});
  });
  
subject: Update test.js