Learning Node.js Development

Adding describe() for individual methods

Now, in the case of utils.test.js (refer to the previous screenshot), we have one test per method, but if you have a lot of tests that are targeting a complex method, it's best to wrap that in its own describe block. We can nest describe blocks and tests in any way we like. For example, right inside utils just after the describe statement, we can call describe again. We can pass a new description. Let's use # (pound sign) followed by add:

describe('Utils', () => {  describe('#add')

The # (pound sign) followed by the method name is the common syntax for adding a describe block for a specific method. Then we can provide that callback function:

describe('Utils', () => {  describe('#add', () => {  })

Then, ...