Run Function › Overview

Overview

The Run function lets you re-execute an application with the same data that was captured during logging.

CA Verify for VTAM acts like a terminal operator, sending the stored input screens to the application, which responds with output. CA Verify for VTAM then compares this output with the output from the logged test stream and flags any differences.

Use the Run function to:

• Test changes in a program
  • If the run completes normally, you know that the program is still processing the input data correctly.
  • If CA Verify for VTAM interrupts the run because it detects differences between the logged screens and the current run screens, you can determine whether those differences are expected (because the program changed) or unexpected (because of an error).

    Note: Most anticipated changes can be identified using the Rules function; see the chapter "Rules Function", for details.

• Test changes in hardware or system software; for example, a new disk drive or a new TSO release
• Stress test your system; for example, run a large multiple terminal test stream to see how response time is affected.