void function ( ) { System . setOut ( this . stdOutMock ) ; }
inject the mocked std-out printstream into the system class before each test concode_field_sep String expectedResult concode_elem_sep PrintStream stdOutOrig concode_elem_sep DragonSlayingStrategy strategy concode_elem_sep PrintStream stdOutMock concode_field_sep void testExecute concode_elem_sep Collection<Object[]> data concode_elem_sep void tearDown