Inspector Quality Assurance/QC Interview Question:

Tell me what are test driver and test stub and why it is required?

Submitted by: Muhammad

☛ The stub is called from the software component to be tested, it is used in top down approach
☛ The driver calls a component to be tested, it is used in bottom up approach
☛ It is required when we need to test the interface between modules X and Y and we have developed only module X. So we cannot just test module X but if there is any dummy module we can use that dummy module to test module X
☛ Now module B cannot receive or send data from module A directly, so in these case we have to transmit data from one module to another module by some external features. This external feature is referred as Driver
Submitted by: Muhammad