how do u develop test harness?

Answer Posted / debi prasad bhol

In Bottom-up testing begins with elementary modules. We use
Drivers to simulate the activities of its superior, The
driver would be responsible for invoking the module under
test, The driving function can be provided through a
testing harness or may be created by the tester as a
program.
Similarly in Top-down approach of Integration testing The
stub we use .
That are nothing but ,
a software testing harness, which is a piece of software
specifically designed to provide a testing environment.

Stubs are created integration testing like Top-down
approach,
Drivers(also called Test Harness)are created integration
testing like bottom-up approach

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