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ERROR - org.mockito.exceptions.misusing.InvalidUseOfMatchersException: Invalid use of argument matchers!

Error

org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Invalid use of argument matchers!
2 matchers expected, 1 recorded:
-> at 


This exception may occur if matchers are combined with raw values:
    //incorrect:
    someMethod(anyObject(), "raw String");
When using matchers, all arguments have to be provided by matchers.
For example:
    //correct:
    someMethod(anyObject(), eq("String by matcher"));

For more info see javadoc for Matchers class.




Sample Code


Mockito.when(sampleReference.setElement(elementList, Mockito.any(String.class)));

Cause


 In a single when statement , matcher is combined with raw value.


Resolution


Either make all arguments as raw

Mockito.when(sampleReference.setElement(elementList, "string"));

or 

Make all arguments using Matcher

Mockito.when(sampleReference.setElement(Mockito.any(List.class), Mockito.any(String.class))); 



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