Learn what integration testing is and how it validates interactions between application subsystems. Discover why integration testing is critical for ensuring the overall functionality and reliability of your software.
Table of Contents
Question
What describes integration testing?
A. It validates an application use case.
B. It validates behavior of individual elements of an application,
C. It requires an automated testing framework.
D. It validates interactions between subsystems of your application.
Answer
D. It validates interactions between subsystems of your application.
Explanation
Integration testing is a type of software testing that focuses on verifying that different modules, components, or subsystems of an application work correctly together. The primary goal of integration testing is to expose defects in the interfaces and interactions between these integrated subsystems.
Some key points about integration testing:
- It is performed after unit testing (which tests individual components in isolation) and before system testing (which tests the entire system).
- It does not necessarily validate end-to-end application use cases, which are typically covered by system testing. Rather, the focus is on the communication and data flow between the subsystems.
- It does not inherently require an automated testing framework, although automation is frequently used to make integration testing more efficient and repeatable. Manual integration testing is also possible.
- It is a critical testing phase that helps uncover issues that cannot be detected by testing individual components in isolation. Problems often occur at the interfaces between components when integrating them.
So in summary, the key distinguishing aspect of integration testing is its emphasis on validating the interactions and interfaces between different parts of an application, rather than the functionality of individual components or the application as a whole. This is essential for ensuring all the pieces work together properly before proceeding to full system testing.
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