Difference between System Testing and Integration Testing
System Testing: While developing a software or application product, it is tested at the final stage as a whole by combining all the product modules and this is called as System Testing. The primary aim of conducting this test is that it must fulfill the customer/user requirement specification. It is also called an end-to-end test, as is performed at the end of the development. This testing does not depend on system implementation; in simple words, the system tester doesn’t know which technique between procedural and object-oriented is implemented. This testing is classified into functional and non-functional requirements of the system. In functional testing, the testing is similar to black-box testing which is based on specifications instead of code and syntax of the programming language used. On the other hand, non-functional testing, checks for performance and reliability by generating test cases in the corresponding programming language.
Integration Testing: This testing is the collection of the modules of the software, where the relationship and the interfaces between the different components are also tested. It needs coordination between the project-level activities of integrating the constituent components at a time. The integration and integration testing must adhere to a building plan for the defined integration and identification of the bug in the early stages. However, an integrator or integration tester must have programming knowledge, unlike a system tester.
Difference between System Testing and Integration Testing :
S. No. | Comparison | System Testing | Integration Testing |
---|---|---|---|
1. | Basic | Tests the finished product. | Validates the collection and interface modules. |
2. | Performed | After integration testing | After unit testing |
3. | Requires | Understanding of the internal structure and programming language. | Knowledge of just interlinked modules and their interaction. |
4. | Emphasis | On the behavior of all module as a whole. | System functionalities interface between individual modules. |
5. | Covers | Functional as well as non-functional tests. | Only functional testing. |
6. | Test cases | Created to imitate real life scenarios. | Build to simulate the interaction between two modules. |
7. | Approaches | big-bang, incremental and functional. | Sanity, regression, usability, retesting, maintenance and performance tests. |
8. | Executed | Only by test engineers. | By test engineers as well as developers. |
9. | Finding errors | System testing aids in locating system errors and any defect found to be regarded as system defect. | Integration testing assists in locating interface errors and any defect found is of individual module only. |
10. | Functional and Non-functional Aspect | It is used to conduct both functional and non-functional testing. | It covers only integrated components’ functional aspects. |
11. | Types |
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