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Testing stages in the Systems development life cycle V-model.

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Tested modules (component testing).

  • Individual modules (small programs) are tested.
  • Usually carried out by the programmer .

Integration and Test

  • Brings together individual modules that have already been tested.
  • Objective is to test sets of components that operate together.
  • Concentrates on the interfaces between modules.

Tested Software (Systems testing)

  • Includes functional systems testing (testing business processes and requirements).
  • Includes non-functional systems testing (performance, response time, load, etc).

Integration and Test

  • Tests the system with other systems and networks.

Tested System (Acceptance testing).

  • May directly relate to the contract.
  • User “signs-off” system.
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