Stubs VS Drivers

Drivers

1.’Driver’ is a piece of software that drives (invokes) the Unit being tested. I.e. A piece of code that passes test cases to another piece of code

2. A driver creates necessary ‘Inputs’ required for the Unit and then invokes the Unit

3. Driver is called component

4. Used in the Bottom –Up Test strategy

Stubs

1. Stub’ is a piece of software that works similar to a unit which is referenced by the Unit being tested, but it is much simpler that the actual unit

i.e. a piece of code that simulates the activity of missing components

2. A Stub works as a ‘Stand-in’ for the subordinate unit and provides the minimum required behavior for that unit

3. Stubs is calling Component

4. Used in the Top – Down Testing Strategy