A test device and a method for controlling the test device are disclosed. After a test is interrupted due to a malfunction of the test device, the test device continuously performs the interrupted testing. The test device for testing a biological material includes: a memory configured to store information which relates to progress of a test; and a controller which, if the test is interrupted due to a malfunction of the test device, is configured to continue performance of the test by using the information which relates to the test progress which is stored in the memory.