Let see this code

class Car {
  whell = new Whell();
  run(){
    this.whell.move();
  }
}

How to make test to ensure the Car run whell correctly ?, above code is not possible to unit test. so we need to modify this code and create constructor to inject whell object.

Overview

Nodejs

Nodejs have couple of file to look at :

• package.json

• node_modules

These file are the location of package that used at nodejs application