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What Is Integration Testing Explain It with Example?

When individual software modules are merged and tested as a group than it is known as integration testing. Integration testing is sets between Unit Testing and System Testing.


Integration Testing Example

For example you have to test the keyboard of a computer than it is a unit testing, but when you have to combine the keyboard and mouse of a computer together to see its working or not than it is the integration testing. So it is prerequisite that for performing integration testing, a system must be unit tested before.

Black-box test case design tactics are the most typical during integration, although limited amount of testing of white box may be used to ensure description of major control paths. 

Why we need integration testing?

Integration testing is executed to establish whether the components interact with each other consort to the specification or not. Integration testing in large refers to joining all the components resulting in the complete system. It is further performed by the developer or the software Tester or by both. Example- checking that a Payroll system interacts as required with the Human Resource system.

Integration Testing Types

1) Top-Down Integration Testing: As the name suggests, this testing always starts at the top of the program hierarchy and travels towards its branches. This can be done in either depth-first or breadth-first.

2) Bottom-Up Integration Testing: This testing always starts at the lowest level in the program structure.

Techniques of integration testing 


1) Top-down testing approach
2) Bottom-up testing approach
3) Big-Bang testing approach
4) Sandwiched testing approach

Conclusion: 

 At last we conclude that Integration testing focuses on testing multiple modules working together and this testing is one of the extensive exercises of the software testing in which particular software modules are merged and tested as a group. 
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Comments

  1. UnknownJanuary 29, 2014 at 11:32 AM

    good definition with example.....

    ReplyDelete
  2. AnonymousMarch 19, 2014 at 3:18 PM

    Clear explanation guys... Good :)

    ReplyDelete
  3. AnonymousMarch 25, 2014 at 4:17 PM

    when Programs are base-lined,then corresponding programmers can interconnect a those programs to build a software,here programmers can check correctness of programs interconnection.

    ReplyDelete
  4. AnonymousMay 11, 2014 at 8:25 AM

    If we have 4 apps, in one its 2, in 2nd its 3, in 3rd app, its 2*3 and in 4th, its 6....What testing it would be? Integration testing or System testing, please explain. I faced this question in interview and was dumbstruck.

    ReplyDelete
  5. AnonymousJuly 12, 2014 at 5:03 AM

    wheres the example?

    ReplyDelete
  6. Rj BlogsMarch 12, 2015 at 1:24 AM

    soo goood

    ReplyDelete
  7. AnonymousFebruary 12, 2016 at 12:40 AM

    Nice and understanding

    ReplyDelete
  8. UnknownFebruary 26, 2016 at 4:25 PM

    if we take facebook as example then how to apply integeration testing?

    ReplyDelete
  9. AnonymousMay 2, 2016 at 3:25 PM

    Can any share integration test cases of any application

    ReplyDelete
  10. AnonymousJuly 7, 2016 at 10:00 AM

    nice one..

    ReplyDelete
  11. AnonymousSeptember 14, 2016 at 2:41 AM

    Very informative and helpful...thnx

    ReplyDelete
  12. AnonymousSeptember 17, 2016 at 4:45 PM

    integration testiong on pen?????

    ReplyDelete
  13. AnonymousSeptember 20, 2017 at 12:31 PM

    The goal of integration testing is to make sure a system consisting of a number of components will function according to specifications when all the components are put together. If that is the case, why spend time testing interfaces between interacting modules? Why not just put them all together and test the system as a whole? can anyone Give arguments both for and against with examples.

    ReplyDelete

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