A virtual testbed for system verification test is provided in which emulated responses are associated with certain steps of a system verification test. The emulated responses can be manually entered or populated with previous test results obtained from execution of the emulation-enabled steps on a real testbed. When the emulation-enabled steps are executed, the system verification test uses the emulated responses as the responses corresponding to the actions of the emulation-enabled steps as if the steps were executed on the real testbed, without actually executing the emulation-enabled steps on the real testbed. Therefore, the virtual testbed of the present invention allows development of test scripts for system verification test without constant, actual access to the real testbed.