HOW TO USE THE DOC TEST FRAMEWORK
---------------------------------

The test framework is driven by a Perl script. Run_Test.pm contains some
useful, miscellaneous functions. The main classes that control test runs
are TestTarget and Process, and the platform-specific derivations of these.

The test framework runs scripted tests, examines the output, and writes
results to an output file that's parsed for scoreboard generation. It's very
important to get the output; from ACE, it's test log files, for TAO, it's
stderr output from the test procedures. Either way, it has to get back to
somewhere the locally running script can process it.

By default, all test procedures run on the local host. It is possible to
redirect the execution to other machines. This is necessary for testing
environments such as VxWorks and LabVIEW RT, which do not support the
local execution of these build and testing scripts. Thus, the build is done
on a host system and executed on the target. For multi-component tests, such
as TAO server and client, the components can (and most often do) run on
different machines. For example, a test may run the server component on the
embedded target and the client component on the local build host.

To redirect execution of a test's component, you must do three things:

   1. Assign a number to the component in the test script. By convention,
      1 is the component that runs on a target. In TAO, this is generally
      the server; in the case of ACE tests, it is the only part. Number 2
      is, by convention, the TAO client, or the piece to run on the build
      host.
   2. Set an environment variable, DOC_TEST_<component-number>. For example,
      DOC_TEST_1, DOC_TEST_2. The value of the environment variable is a
      configuration name.
   3. Set environment variables for the configuration name. These environment
      variables hold the information used to run the test component on the
      configuration. The environment variables are named
      <configuration-name>_<configuration-item>. Different types of
      configurations may require different configuration items, depending on
      their capabilities and needs. However, the following must be set:
         <configuration-name>_OS: The OS type, e.g., vxworks or labview_rt.
                                  If this is "local", the component runs on
                                  the local host but with an alternate set
                                  of settings, such as ACE_ROOT, TAO_ROOT.
         <configuration-name>_IPNAME: The machine's IP hostname or address
         <configuration-name>_ACE_ROOT: ACE_ROOT for the configuration's files
         <configuration-name>_TAO_ROOT: TAO_ROOT for the configuration's files

If there is no DOC_TEST_<component-number> environment variable when the
component runs, that component is executed on the local machine. This is
the case for most builds.
