A system and method for generating an orthogonal array (OA) for software testing is disclosed. In one embodiment, the method for generating an OA of test cases for testing a system includes accepting a user input from a user, the user input including multiple factors and multiple levels associated with the system, accessing a reference table to determine a set of parameters based on the user input for testing each level of a factor against all levels of all other factors in the system, and performing a predetermined number of iterations based on the set of parameters to generate the OA of the test cases. The OA of the test cases includes combinations of the multiple factors and the multiple levels required for testing pair-wise interactions between the multiple levels and the multiple factors in the system.