void function ( ) { System . setOut ( this . stdOutMock ) ; }
inject the mocked std-out printstream into the system class before each test concode_field_sep int INVENTORY_SIZE concode_elem_sep int THREAD_COUNT concode_elem_sep PrintStream stdOutOrig concode_elem_sep PrintStream stdOutMock concode_field_sep void testAddItem concode_elem_sep void tearDown