Verify object attribute value with mockito

Question

I have a method call which I want to mock with mockito. To start with I have created and injected an instance of an object on which the method will be called. My aim is to verify one of the object in method call.

Is there a way that mockito allows you to assert or verify the object and it's attributes when the mock method is called?

example

Mockito.verify(mockedObject)        .someMethodOnMockedObject(               Mockito.<SomeObjectAsArgument>anyObject()) 

Instead of doing anyObject() i want to check that argument object contains some particular fields

Mockito.verify(mockedObject)        .someMethodOnMockedObject(               Mockito.<SomeObjectAsArgument>**compareWithThisObject()**) 

Answer 1

New feature added to Mockito makes this even easier,

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

Take a look at Mockito documentation

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In case when there are more than one parameters, and capturing of only single param is desired, use other ArgumentMatchers to wrap the rest of the arguments:

verify(mock).doSomething(eq(someValue), eq(someOtherValue), argument.capture()); assertEquals("John", argument.getValue().getName()); 

Answer 2

I think the easiest way for verifying an argument object is to use the refEq method:

Mockito.verify(mockedObject).someMethodOnMockedObject(ArgumentMatchers.refEq(objectToCompareWith)); 

It can be used even if the object doesn't implement equals(), because reflection is used. If you don't want to compare some fields, just add their names as arguments for refEq.