A method of testing a processing includes performing a test of at least one logic block of a processor of a data processing system; receiving an interrupt; stopping the performing the test for the processor to respond to the interrupt, wherein the stopping the performing the test includes storing test data of the test to a memory prior to the processor responding to the interrupt; and after the processor responds to the interrupt, resuming performing the test, wherein the resuming performing the test includes retrieving the test data from the memory and using the retrieved test data for the resuming performing the test.