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Integration Testing

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What is Integration Testing?

Integration testing is a software testing technique that is used to verify that different components or modules of a system work together as expected. It is typically performed after unit testing, which tests individual components or modules in isolation, and is focused on testing the interactions and dependencies between different components or modules.

Integration testing is an important step in the software development process, as it helps to ensure that the various components of a system are functioning correctly and are able to communicate and exchange data as expected. It also helps to identify any issues or bugs that may arise when different components are combined and helps to ensure that the system is stable and reliable.

There are several different approaches to integration testing, including:

  1. Top-down integration testing: This approach starts with the top-level components or modules of the system and works downward, testing each component or module as it is integrated into the system.
  2. Bottom-up integration testing: This approach starts with the low-level components or modules of the system and works upward, testing each component or module as it is integrated into the system.
  3. Big-bang integration testing: This approach tests all components or modules of the system at once after they have all been integrated.
  4. Incremental integration testing: This approach tests the system in small increments, adding components or modules one at a time and testing them as they are integrated into the system.

Overall, integration testing is an important step in the software development process that helps to ensure that the various components of a system are functioning correctly and working together as expected.


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