What do you mean by Unit Testing, Integration Testing, System
Testing, and User Acceptance Testing and when do you do them?
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Answer Posted / dheeraj shandilya
Testing is a process that includes many activity to assess
the application's quality.This testing is done at four
level. The first level is Unit Testing, here we test each
module or unit of application separately.
Second level is Integration level testing, here we integrate
some of the unit(module) that we tested separately at unit
level to test the interface between different module, their
interaction etc.
At third level we do System testing, here we test the whole
application at one go. here we test that the application is
satisfying the requirement or not.
Last level is Acceptance level, here the application is
tested by end users or small group of different
organization/team based on business scenario.
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