What is Unit Testing? (Software Testing Interview Question #12)
 What is Unit Testing?
- Unit Testing is the first level in the different levels of Software Testing
- It is performed by developer
- Unit Testing falls into White Box Testing category as code is visible while Testing and generally developers perform this Unit TestingÂ
- Complete code written for developing the Software Application is broken into smallest pars as possible known as Unit, which cannot be broken further.Â
- These broken down Units will be tested individually by passing valid and invalid inputs for testing coverage.
- Example for a Unit: control structure, loop coverage etc.
- Advantages of Performing Unit Testing:
- Cost of fixing defects in Unit Testing is less
- Defects will be identified early and hence the cost of fixing them becomes cheap
- Unit Tests can be automated and run multiple times as part of Regression Testing
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