A method, comprises receiving a test case on a processor, receiving an input from a user to call the test case in a first calling environment, identifying the first calling environment, setting a first indicator in a memory indicating the first calling environment, running a directive in the test case, wherein the directive calls a subroutine associated with the directive, and running the subroutine called by the directive wherein the subroutine includes receiving the first indicator indicating the first calling environment, performing a first task associated with the directive wherein the first task is performed in the first calling environment responsive to receiving the first indicator indicating the first calling environment, and outputting a result of the first task to a user on a display.