Argument captor mockito

Question

I have been doing a bit of reading around argument captor and the more I read about it, the more I get lost. Can someone take the pain of explaining it with an example?

Answer 1

According to docs, this is deprecated. You should use factory method forClass(Class) to create captors instead to avoid NullPointerExceptions. see here

Example:

  ArgumentCaptor<Person> argument = ArgumentCaptor.forClass(Person.class);
  verify(mock).doSomething(argument.capture());
  assertEquals("John", argument.getValue().getName());