Integration Testing Outline


Why Do We Need Integration Testing?



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Integration testing

Why Do We Need Integration Testing?

Changing Requirements & Software Testing


Reasons for sudden changes are:
  • unforeseen problems, including developers ignoring some of the initial requirements, design defect, and test case failures;
  • marketing aspect – the revision of marketing strategies, a new approach to competitive response, etc.;
  • missing stakeholders, who decide to leave a project without handing things over to a person who remains in charge;
  • very optimistic deadlines or budget that doesn’t match actual resources; 
  • some product development life cycles not addressed (here come the incomplete requirements and gaps in logic).

Changing Requirements Affect Product Features

  • One feature was modified. This feature consists of several units. In such a fast-paced environment, developers risk missing something. A QA team is their backup ready to find the flaws. 
  • We are testing an e-commerce app. Just before the release of a new build, a marketing department signs an agreement with a popular delivery platform that was frequently requested by users. This delivery method wasn’t mentioned in the initial requirements.
  • The process starts with small steps:
  • Checking whether a new option appears on the list of delivery methods.
  • The team needs to run a unit test to make sure it does.
  • Then, we need to verify users can proceed to the next step after choosing this type of delivery.

  • That’s integration testing. 

Advantages

  • This testing makes sure that the integrated modules/components work properly.
  • Integration testing can be started once the modules to be tested are available. It does not require the other module to be completed for testing to be done, as Stubs and Drivers can be used for the same.
  • Integration checks can take place at any stage of the SDLC.
  • It detects the errors related to the interface.

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