How to return the argument, which the mock method was called with, as response?

Question

Is it possible in Mockito to return the object that mocked method was called with? Without prior knowing what object it will be.

@Mock
MyObjectRepository myObjectRepository;
...
when(myObjectRepository.save(any(MyObject.class))) //save method returns normally MyObject.class object
     .thenReturn(\\the object that method was called with);

I want to return the object that is passed to save method.

score 4 · Accepted Answer · answered Dec 16 '21 at 12:39

4

The following should work:

when(myObjectRepository.save(any(MyObject.class)))
     .then(AdditionalAnswers.returnsFirstArg());

answered Dec 16 '21 at 12:39

João Dias

16,277
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I tried it first with `.thenReturn(...)` and it failed, works perfectly with simply `.then(AdditionalAnswers.returnsFirstArg())` [link](https://www.baeldung.com/mockito-additionalanswers#1-returning-the-first-argument) – makozaki Dec 16 '21 at 13:10

How to return the argument, which the mock method was called with, as response?

1 Answers1