Software Testing And Quality Assurance Questions Long
System testing and integration testing are two important phases in the software testing process, but they serve different purposes and focus on different aspects of the software development lifecycle.
System testing is a level of testing that evaluates the complete and integrated system as a whole. It is performed after the completion of integration testing and before the acceptance testing phase. The main objective of system testing is to ensure that the software system meets the specified requirements and functions as expected in the intended environment. It focuses on testing the system as a whole, including all its components, modules, and interfaces. System testing is typically performed by a dedicated testing team or independent testers who are not involved in the development process.
On the other hand, integration testing is a level of testing that focuses on testing the interactions and interfaces between different components or modules of the software system. It is performed after unit testing and before system testing. The main objective of integration testing is to identify and resolve any issues or defects that may arise due to the integration of different components. It ensures that the individual components work together seamlessly and as intended. Integration testing can be performed using different approaches such as top-down, bottom-up, or sandwich testing, depending on the software architecture and development methodology.
In summary, the main difference between system testing and integration testing lies in their scope and focus. System testing evaluates the entire system as a whole, while integration testing focuses on testing the interactions and interfaces between different components. System testing ensures that the software system meets the specified requirements, while integration testing ensures that the components work together seamlessly. Both testing phases are crucial for ensuring the quality and reliability of the software system, but they serve different purposes in the overall testing process.