Question

I am trying to figure out a way to verify a class constructor in the following way (keep in mind this is a theoretical example)

public MyClass extends ItemContainer {

   public MyClass(RoundItem a, SquareItem b) {
      addItem(a);
      addItem(b); 
   }
}

I would like to verify that the constructor called addItem once with any(RoundItem.class) and once with any(SquareItem.class). I can’t seem to find a good way to verify a constructor in such a way with PowerMock or Mockito. Any ideas?

Answer 1

You don’t really need a mocking framework in order to test this. You can make Test Spy object.

for example :

@Test
public void testMyClassConstruction() throws Exception {
  MyClass myClass = new MyClass() {
    public int size() {
      return items.size();
    }
  }

  assertEquals(2, myClass.size());
}