The TEST command provides a mechanism to test site-supplied
    subroutines intended for use with the popstore. The purpose and
    usage of those subroutines is described in the PMDF popstore
    & MessageStore Manager's Guide. Note that the shareable image
    containing the subroutine to be tested must be installed as a
    known image with the DCL INSTALL CREATE command. Moreover, an
    executive mode logical must be used to reference the image.
    The name of that logical is specified with the image-spec
    parameter. And, any logical referenced by that logical must also
    be an executive mode logical. These requirements are OpenVMS
    requirements and are enforced by LIB$FIND_IMAGE_SYMBOL, the run-
    time library subroutine used by the popstore to dynamically load
    and link to the subroutine.

    Note that if you use the TEST command and then subsequently
    change your subroutine, then you will need to exit the utility
    and restart it before you can retest your subroutine. This is
    because LIB$FIND_IMAGE_SYMBOL won't reload the subroutine a
    second time. Also, when rebuilding a shareable image, be sure
    to use the DCL INSTALL REPLACE command to install the new version
    of the image.

    The TEST/MESSAGE_MAPPING and TEST/PROFILE_MAPPING commands test,
    respectively, MAP_MESSAGE_FILENAME and MAP_PROFILE_FILENAME
    subroutines. The command will load the subroutine from the
    specified image and then, for each stored message or profile
    file, run the filename through the subroutine. The input and
    output file names for each file will be displayed along with
    diagnostic information, should an error occur.

    The TEST/CONNECT and TEST/BLOCK_DAYS commands test, respectively,
    the COMPUTE_CONNECT and COMPUTE_BLOCK_DAYS subroutines. With
    each command, you can specify the values of the input arguments
    to be passed to those subroutines. The results produced by
    the subroutine will then be displayed. Should an error occur,
    diagnostic information will be displayed.

    Text files intended for use as PMDF_TABLE:POPSTORE_MESSAGE_PATHS.
    or PMDF_TABLE:POPSTORE_PROFILES_PATHS. files can be tested with
    the TEST /PATHS command. The command will scan the directory
    trees listed in the specified file, displaying the files found in
    each directory tree.