Discuss in details about integration testing, Software Engineering

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Discuss in details about Integration testing.

  • It is a systematic procedure to construct the program structure.
  • Incremental integration - The program is built and tested in small increments.

Top-down integration

  • It is an incremental method.
  • Modules are integrated by moving downward through the control hierarchy starting with the chief control module(main program).
  • Subordinate parts are incorporated by depth-first or breadth-first way.

Bottom-up integration

  • This testing starts construction and testing with the elements at the lowest levels in the program structure.

Regression testing

  • It is the re-execution of some subset of tests that have previously been conducted to make certain the changes that have not been propagated unintended side effects.

Smoke testing

  • It reduces the integration risk.
  • Error analysis and correction are simplified.

 


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