In software testing, the test basis is the set of documents, specifications, and artifacts that serve as the foundation for creating test cases and executing tests.

It provides the necessary information and guidance for testers to ensure that the software meets the specified requirements and functions correctly. The test basis typically includes requirements documents, design documents, user stories, use cases, and any other relevant documentation that describes what the software is supposed to do and how it is supposed to behave.

It serves as a reference point for testers to understand the scope of testing, identify test scenarios, and determine the expected outcomes. By using the test basis as a reference, testers can ensure that their tests are aligned with the intended functionality of the software and that they cover all relevant aspects of the system.

This helps to improve the effectiveness and efficiency of the testing process, as well as the overall quality of the software. In addition to guiding the creation of test cases, the test basis also serves as a means of traceability, allowing testers to link their tests back to the requirements and design specifications.

This traceability helps to ensure that all requirements are adequately tested and that any defects or issues are properly documented and addressed. Overall, the test basis plays a crucial role in the software testing process by providing a solid foundation for creating and executing tests, ensuring that the software meets the specified requirements, and maintaining traceability throughout the testing lifecycle.

It is an essential component of effective testing practices and contributes to the successful delivery of high-quality software products.