Big Bang Approach-The Way to Test Modules as Whole. big bang approachTesting a software product assumes the execution of various testing strategies and systems. Integration testing is a system in which program modules are joined and tested as a single unit.

This kind of testing is very massive and contains a few methodologies; one of those is the big bang approach in testing.

Big bang approach is a methodology in which all product modules are consolidated immediately and make a complicated framework.

This unity of various modules is then tested as an element. As indicated by this checking strategy, the integration testing approach won’t be executed until all segments are completed.

Such a methodology saves tester’s time and effort while executing the tests. To meet the ideal objectives and results, QA engineers need to record appropriately test cases and their results. Otherwise, the entire software integration strategy will be failed.

Beneath is the example of the Big Bang approach:

Assume a system comprises of four modules, in big bang integration testing all the four modules ‘Module A, Module B, Module C and Module D’ are integrated all the while and after that, the testing is performed. Subsequently, in this methodology, no individual software integration testing is performed due to which the chances of basic failures increase.

Advantages and Drawbacks of Big Band Integration Testing:

Big Bang Test is a profiting approach of software testing that gives us a complete software system or application before the commencement of the integration test plan. By performing Bing Bang Testing during the Software Development Life Cycle, testers can appreciate quick testing and can easily lead to further testing. This testing procedure prevents wastage of additional endeavors and time and makes the testing procedure cost-effective. But, this astounding methodology of software testing has a couple of advantages and drawbacks that should be considered before the execution of the testing procedure.


  • The primary benefit is that everything is done before integration testing begins.
  • It is amazingly advantageous for small systems.


  • There exists trouble in fault localization.
  • High shot of missing a few interfaces links to be tested.

Big Bang Integration Testing is where no steady testing happens preceding all the system’s segments being joined to shape the system. In this methodology, singular modules are coordinated until each one of the modules are prepared, and all or most units are consolidated and tested in one go. This kind of testing is taken or performed when the testing team gets the product in one pack, as it enables them to test each one of the modules together without independently testing them.

With the help of this big bang model SDLC, one can adequately save time in integration testing process and guarantee that the software is being developed according to the prerequisites expressed by the customer or an association. Despite the fact that this methodology can be tedious, but also the most ideal approach to test a few modules of a segment or a system all the while.

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