Development tests of creating virtual machines with different virtual processor parameters

Context and relevance. Hypervisors are the foundation of modern cloud services. New solutions are being actively developed in this area and require thorough testing. Due to the abundance of settings, testing can take a long period of time, so not only maximum test coverage but also a minimum number of test scenarios is required. Objective Identify and demonstrate the independence of the minimum number of tests for verifying the creation of virtual machine with different virtual processor parameters. Hypothesis. The number of independent tests required to perform exhaustive testing of virtual machine creation with different processor parameters is strictly limited, and these limitations can be identified using equivalence classes. Methods and materials. All key virtual processor configuration parameters of created virtual machine were considered. Optimal equivalence classes were selected for each. Then, tests were taken at the boundary values of each class, along with one test from the middle of each class. After identifying all unique tests for the parameter in question, a search was conducted for intersections with previously identified tests, and duplicates were removed from the final list. Tests that may be missing due to specific hypervisor implementation features were marked separately. Results. The result is a set of tests with a single parameter that varies depending on the number of processors the hypervisor can emulate. All tests are independent, allowing them to be run in parallel. Conclusions. It has been shown that for one section of hypervisor testing – creating a virtual machine with various virtual processor parameters – it is possible to derive a clear set of independent tests using equivalence classes. It is recommended to develop tests for other parameters of creating virtual machine in a similar way.