在Java中模拟多级数组以进行单元测试

Question

Hypothetically I have

class Box{
   Item[] items;
}

class Item{
   Toy[] toys;
}

class Toy{
   Color[] colors;
}

The method is to test if the Box has green color toy;

public bool testHasColor(Box){
   //There will be code here that
   //Streams over each type till we get to color
   // Final point is
   if(color==Color.GREEN){
    return true;
   }
}

BoxText.class

public void testBoxHasColorGreenMethod(){
    // Need mocking here
}

What the best way to mock this Box class for the test case?

Thank you

Answer 1

You don't need to mock any Java APIs. You just need to "mock" some data which is usually not called "mocking" - just testing. So you would just create a test instance of Box and test if your method produces the expected outcome.

    Box box = new Box();
    Item item = new Item();
    Toy toy = new Toy();

    box.items = new Item[] {item};
    item.toys = new Toy[] {toy};
    toy.colors = new Color[] {Color.RED, Color.GREEN};