Invalid use of argument matchers

Question

The simple test case below is failing with an exception.

org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Invalid use of argument matchers! 3 m         


        

Answer 1

Mockito requires you to either use only raw values or only matchers when stubbing a method call. The full exception (not posted by you here) surely explains everything.

Simple change the line:

when(jdbcTemplate.queryForObject(anyString(), any(SqlParameterSource.class), String.class
                        )).thenReturn("Test");

to

when(jdbcTemplate.queryForObject(anyString(), any(SqlParameterSource.class), eq(String.class)
                        )).thenReturn("Test");

and it should work.