Why Integration Testing Is Required?
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Today every business wants high-performing and high-quality software. For high-quality software proper integration of software modules/components is required. Therefore businesses conduct integration tests to check the integration of software components. Let us now take a close look into what exactly is integration testing and why is it needed.
What is integration testing?
It is a software
testing method in which individually tested/unit tested software
modules/units/components of the software are combined to ensure that these
modules work fine with each other after combining. The main aim of this test is
to verify these different modules are fully integrated and communicating as
expected. It also validates the
performance, functionality, and reliability of the software modules.
Why
is integration testing required?
Below mentioned are some of the reasons why
this test should be integrated:
·
To validate the performance,
functionality, reliability of integrated modules
·
To enhance the code
coverage and to improve the reliability of the tests
·
To identify system-level issues
and to help businesses resolve them at
the earliest
·
To identify and resolve issues
in the early stage of the software development process
·
To ensure that the modules
interact with other APIs and third-party tools as expected
·
To understand the logic
implemented by the developer against the requirements
·
To ensure proper integration of
all software modules this test is performed
What
are the different types of integration testing?
Below mentioned are different types of
integration tests:
1.
Big bang approach– In this approach, almost
all of the units or major units are combined and tested in one-go. It verifies
whether the system works as expected
2.
Incremental testing approach – This
approach includes testing a minimum of two related modules. The modules are
summed up and tested to make sure that all the modules are merged and tested in
a single batch.
3.
Top-down approach – This testing approach
includes testing of top unit levels first and then moving to lower unit levels.
Stubs, which are a small segment of the code are used to simulate the data
response of lower modules until they are completely tested and integrated.
4.
Bottom-up approach– This testing approach includes testing of lower unit levels first and then moving to upper
levels. Drivers which simulate the data response of a connecting higher level
or parent module is used instead of stub
5.
Hybrid approach - It is the combination
of the top-down and bottom-up approach. It allows testing top modules with
lower modules and vice versa at the same time. This type of
testing ensures better and faster results.
6.
System integration testing - This
process includes functionality testing wherein testing is performed to check
whether the modules that were combined ensure the correct outcome and are
performed by developers and test engineers. Moreover, in system testing, test
cases are developed to simulate the interaction between modules.
Conclusion: Today every
business wants quality software therefore businesses conduct a variety of tests
before the release of the software. Integration testing is one such software
testing practice that helps businesses to ensure that software modules are
properly integrated and work as expected. Leverage integration testing from a
next-gen QA and software testing services provider to get high-quality
software.
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