Asynchronous event

Asynchronous event
Event occurring at unrelated intervals.

Real time software

Real time software
Software with response time constraints for its elements and components. 

Debugging

Debugging
Tracing the source of error by using breakpoints, macros, samples outputs from standard inputs, instruction simulators and laboratory tools.

Comparison testing

Comparison testing
Comparison with previously available results.

Specific environment testing

Specific environment testing
Testing for specific environment and components. For example, Keyboard, displays, drivers and ISRs. 

Black Box Testing

Black Box Testing
Testing for behavior and all functional aspects only. 

White box testing

White box testing 
Testing for each program path, each loop ad conditions, input ranges, events fast occurring events and constraints ( memory , energy requirement and response times of function, routines and drivers).