This tutorial explains in detail Unit Testing also know as Component or Module Testing.
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Video Transcript with Key Takeaways Highlighted:
Consider a scenario where you work for an IT outsourcing company as part of the Testing Team and your company is hired by a bank to develop a online banking application
To understand the STLC , lets first quickly go through the SDLC
During Requirement analysis phase, after series of meetings the customer decides he wants the following 5 functionalities into his system Login on Valid Credentials, View Current Balance, Deposit Money, Withdraw Money, Transfer Money to a 3rd party account
Next , in the Functional Specification stage architecture , database , and operating environment design are finalized
Next , in High level Design stage the application is broken down in module & programs
In Detail Design Stage The pseudo code for functions for each module is documented
Actual Coding Begins. This is the software development cycle of the V-model.
During all these phases, the tester is not sitting idle for the coding to complete
But is doing corresponding testing activities
Lets look at one by one -
Unit Testing. It is also called Component Testing. It is performed on standalone module to check it is developed correctly.For the Login Module, typical unit test cases would be
Check response for Valid Login & password
Check response for invalid Login & password
Check response when login id is empty and login button is pressed
Developers do unit test. In practical world, developers are either reluctant to test their code or do not have time to unit test .Many a times, much of the unit testing is done by testers
