Integration testing is a methodology where modules are created, and testing of modules consistently begins at the best degree of the programming hierarchy and proceeds towards the lower levels. It’s the augmentation of unit testing.

1. Everything about Integration Testing,
Advantages and Types
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Aug 6 · 2 min read
Testing is one of the most important phase of SDLC (Software
Development Life Cycle) and it is executed by the team of testers. It will
help to check the product quality, effectiveness, functionality, etc. There
are different types of testing such as unit testing, integration testing and
more. This blog helps you to understand about integration testing.
IntegrationTesting:
Integration testing is a methodology where modules are created, and
testing of modules consistently begins at the best degree of the
programming hierarchy and proceeds towards the lower levels. It’s the
augmentation of unit testing. The integration testing is normally
performed after the unit testing and before validation testing. This
testing follows 2 approaches that are ‘Top Down’ and ‘Bottom Up’.
This integration testing is also called as ‘I & T’ (Integration and Testing),
‘String Testing’ and sometimes ‘Thread Testing’.
Advantages of IntegrationTesting:
· Fast testing process as compared to end-to-end testing
· Test performs at the initial stage of development and hence bug easily
identify
· Easy to integrate and test in the development environment
· Better test coverage
· Easy to track and more reliable
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2. · Detects errors related to the interface between modules
Types of IntegrationTesting:
There are different types of integration testing such as top down
integration, bottom up integration, big bang integration, incremental,
etc. Here, we are focusing on the main types only. Such as:
1. Big Bang Integration Testing: In this testing, all components or modules
are coordinated at the same time, after which everything tested as whole.
This testing is completed before integration testing starts. It is a little time
consuming and difficult to trace the reason of failure.
2. Top-Down Integration Testing: Top-down testing is performed from top
to bottom manner. The components or systems are substituted by stubs.
3. Bottom Up Integration Testing: In this testing, both development and
testing can run together and the components or systems are substituted
by drivers
4. Sandwich Integration Testing: It is a combination of both top down and
bottom up methodologies. It is also called as hybrid or mixed integration
testing.
5. Functional Incremental Testing: This is the testing of functions and
functionalities.
For better understanding of integration testing, contact a professional
software testing and integration service provider.
Software Testing Services Software Testing Company Integration Testing
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