INTERVIEW QUESTIONS TESTING - BASICS SOFTWARE TESTING DETAILS

Question: Explain steps for doing integration testing? When does it come into picture?

Answer: Integration testing comes after we've done unit & module testing the actually

we've to test,

interface between modules ie links between units

functionality of every objects in the application

Integration testing comes after we've done unit & module testing the actually

we've to test,

interface between modules ie links between units

functionality of every objects in the application
Source: CoolInterview.com

In integration testing we check whether interface between all modules are taking place properly or not.it comes in picture
after unit testing n module testing.Basically of three types:1.top down
2.bottom up
3.critical part first Source: CoolInterview.com

After performing the unit testing and module testing by the developers or whitebox testers, the midules of the application are integrated to make it a complete application, after integrating it, the integration test is performed, whether all the modules are properly working as for the functionality after integration.

Integration testing is of 4 types

* Top Down integration testing
* Bottom Up integration testing
* Hybrid integration testing
* BigBang integration testing

Top down integration is done when one of the sub module is not available to perform test, a sub module caled "stub" is developed to integrated, it acts as a sub module to continue the test

Bottom up integration is done when all the sub modules and the main module is not ready, then a main module called "driver" is developed to test as it acts as a maina module to continue the test

Hybrid integration

Combination of top down and bottom up integration is called hybrid integration where both the 'stub' and 'driver' are used

Testing the application as a whole is bigbang integrationtesting Source: CoolInterview.com

There are two types in it.They are
Top down integration
Bottom up integration
Top down is performed from the base level of modules and to the completed level.
Bottom up is performed from the completed level to the base level. Source: CoolInterview.com

In integration testing we check whether interface between all modules are taking place properly or not.it comes in picture
after unit testing n module testing.
Integration testing is divided into two types.
They are
1.Incremental integration testing.
2.Non-incrementel integration testing.
Incremental integration testing is again divided into four types.They are
* Top Down integration testing
* Bottom Up integration testing
* Hybrid integration testing
* BigBang integration testing
Source: CoolInterview.com

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