java - junit test class for the following code

Question

How to mock the object for the Phone object.

code bellow,

public class Fortest {

  UserDao userdao = new UserDao();
  Phone name = new Phone();
  public String handleUser(User user) {

    String returncode="failed";
    //User usr = new User("bob");
    String username=user.getUsername();
    String pass=user.getPass();
    System.out.println("username and password : "+username+" : "+pass);

    Phone name = new Phone();
    String ph = name.getA();
    System.out.println("ph "+ph);

    if(ph.equalsIgnoreCase("test")){
      System.out.println("A "+ph);
      returncode="done";
    }
    System.out.println("returning "+returncode);

    return  returncode;
    //System.out.println("name "+name.toString());
    //System.out.println(name.getA());
  }
}

Thanks

Answer 1

You don't. One of the rules of mocking is: you never mock entities or value objects. If you need to break this rule, it means that you probably have a design flaw.

If you need to mock a new, you'll need to pass a factory to the object, and then you mock the factory. A very common example of this is when you need to mock Date objects, which is very well explained in this other question: How to mock the default constructor of the Date class (check the first answer).

As a side note, calling an instance of Phone name...mmm that doesn't look right.