source : Methods of Software Testing
There are three methods of software testing available namely Black Box Testing, White Box Testin...
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Top QA companies in a test environment usually write and run tests before the software or feature is delivered to the test team. Unit testing can be done manually, but automating the process will speed up delivery cycles and expand test coverage. Unit testing will also make debugging easier because identifying problems earlier means it will take less time to fix them than if they were discovered later in the testing process.