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Difference between System Testing and Acceptance Testing
Testing is a major step for the successful delivery of any application. On the basis of the level of execution of testing, we can classify testing into two categories − System Testing and Acceptance Testing. Read this article to learn more about system testing and acceptance testing and how they are different from each other.
What is System Testing?
System Testing is a type of testing which is used to validate the functionality of a developed software product. It is also known as black box testing. This testing involves the behavioral as well as functional testing of the software product as per the documents provided for testing. System testing is generally performed by developers as well as testers.
System testing includes both the module basis testing and integration testing with multiple modules. System testing is generally executed after the development and before the delivery of the software product. Since the system testing is performed by a group of testers, thus it would contain more negative test cases. The system testing uses all the possible dummy inputs for testing purpose.
What is Acceptance Testing?
Acceptance testing is a type of testing that validates if a developed software product meets the client's requirements or not. It covers the testing of parameters provided by the client before development of the software product.
Acceptance testing is generally performed by testers as well as clients. Therefore, acceptance testing covers both alpha and beta testing. This testing is generally performed after the system testing and before the delivery of the software product. Unlike system testing, acceptance testing uses all the possible random values of the inputs for testing.
Difference between System Testing and Acceptance Testing
The following are some basic differences between System Testing and Acceptance Testing −
Key |
System Testing |
Acceptance Testing |
|---|---|---|
Definition |
System Testing is the testing which basically validates the functionality of product developed. Also this testing covers the behavioral as well as functional testing as per the document provided to the tester for testing. |
Acceptance testing is the type of testing which is used to check whether the software meets the customer requirements or not. It basically covers the acceptance criteria provided by the client before development of product. |
Performed By |
In general, System testing is done by developers as well as testers. |
Acceptance testing is done by testers, stakeholders as well as clients. |
Coverage |
System Testing covers the module basis testing as well as integration testing with multiple modules. |
Acceptance testing covers alpha and beta testing which means it is done at both sides i.e. at the side of delivery as well as side of client. |
Order of execution |
System testing is generally done after development and before delivery of the product. |
Acceptance testing is done after System testing and delivery of the product. |
Test Cases |
In System Testing since it is performed by group of testers, it would contain more negative test cases. |
Acceptance Testing contains more of positive test cases |
Inputs |
All the possible dummy inputs are used in System Testing. |
In acceptance testing, all the possible random inputs are used. |
Conclusion
The most significant difference between the two types of testing is that System Testing covers the behavioral as well as functional testing of the product as per the document provided, whereas Acceptance Testing covers the acceptance criteria provided by the client before development of the product.
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