The TEST command lets users test unauthorized assembler programs. The TESTAUTH command lets users test authorized assembler programs. Users can also test APPC/MVS transaction programs written in assembler with the TEST and TESTAUTH commands. You can customize these commands in the following ways:

• Supply installation-written subcommands of the TEST and TESTAUTH commands, and installation-written command processors to be invoked under TEST and TESTAUTH. You must define those subcommands and command processors to TEST and TESTAUTH using CSECT IKJEGSCU or member IKJTSOxx in SYS1.PARMLIB.
• You can write exit routines to tailor the processing of the TEST and TESTAUTH commands and their subcommands.
  The command and subcommand exits for TEST and TESTAUTH allow you to:

  • Restrict certain users from using the command or subcommands.
  • Change the operands a user specifies on the command or subcommands.
  • Perform clean-up processing before the command or subcommand ends.

For more information, see Customizing the TEST command and Customizing the TESTAUTH command.