Nested describes

Nested describes are useful when you want to describe similar behavior between specs. Suppose we want the following two new acceptance criteria:

• Given an investment, when its stock share price valorizes, it should have a positive return on investment (ROI)
• Given an investment, when its stock share price valorizes, it should be a good investment

Both these criteria share the same behavior when the investment's stock share price valorizes.

To translate this into Jasmine, you can nest a call to the describe function inside the existing one in the InvestmentSpec.js file (I removed the rest of the code for the purpose of demonstration; it is still there):

describe("Investment", function()
  describe("when its stock share price valorizes", function() {
   
  });
});

It should behave just like the outer one, so you can add specs (it) and use the setup and teardown functions (beforeEach, afterEach).

Setup and teardown

When using the setup and teardown functions...