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Functional Testing - when new features & use cases are introduced that the existing use cases are enhanced to be compatible with the new functionality. For example, if enhancements were needed in the VCPE or VOLTE U/C to upgrade the PNF support introduced in R4 Dublin. ("Dictionary" Definition) Functional testing is a software testing process used within software development in which software is tested to ensure that it conforms with all requirements. Functional testing is a way of checking software to ensure that it has all the required functionality that's specified within its functional requirements.
Regression Testing - when new features & use cases are introduced doesn't break existing use cases. For example, if PNF onboarding/onboarding (PNF package) U/C introduced in R4 Dublin didn't break the functionality of VCPE or VOLTE. ("Dictionary" Definition) Regression testing is re-running functional and non-functional tests to ensure that previously developed and tested software still performs after a change. Changes that may require regression testing include bug fixes, software enhancements, configuration changes, and even substitution of electronic components. As regression test suites tend to grow with each found defect, test automation is frequently involved. Sometimes a change impact analysis is performed to determine an appropriate subset of tests (non-regression analysis).
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LAB ENVIRONMENT - U/C were developed in particular environments, the xNFs are installed in a particular environment, and these environments change over time. Limitations need to be identified with additional equipment or new equipment etc.
Typical Software Industry Testing Process. ONAP Development & Integration testing can consider and incorporate some of the key concepts with a "typical" software industry testing process to insure quality software is delivered for the Use Case development:
SERVICE PROVIDER PRIORITIES
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