An integrated testing method is proposed to perform a test procedure on a number of computer components, concurrently, in a multitasking manner through software simulation. In this method, an initialization procedure is first performed to specify the total number of simulated operations, the FIFO buffer size, the command sequence, and the start time of operation. It is a characteristic feature of this integrated testing method that the test procedure is performed concurrently in a multitasking manner on all the components under test to operate in response to each command from the command sequence. In the event that two or more of the components under test are competing for the same resource, an arbiter is activated to perform arbitration for these competing components.