[Boost-build] Running commands before and after a test target runs

Subject: [Boost-build] Running commands before and after a test target runs
From: Matthew Chambers (matthew.chambers_at_[hidden])
Date: 2010-01-12 14:39:19

Hi Volodya,

I've modified testing.jam so that I can run a command before and after 
the test runs. I want the precommand to send its output before the test 
runs so that an observer of the output stream can time the test. This 
will be limited to -j1 because otherwise the observer would get all 
confused as to which output goes with which test. But I'd at least like 
the option of doing this. Per your instructions on IRC, I tried a 
modified unit-test rule like:

rule unit-test ( target : source : properties * )
{
    if ! [ on $(target) return $(TEST_PRECOMMAND) ]
    {
       TEST_PRECOMMAND_OUTPUT on $(target) = "> $(.NULL)" ;
    }
    if ! [ on $(target) return $(TEST_POSTCOMMAND) ]
    {
       TEST_POSTCOMMAND_OUTPUT on $(target) = "> $(.NULL)" ;
    }
    local name = $(target:G=) ;
    TEST_NAME on $(target) = $(name:B) ;

    announce $(target) : $(source) : $(properties) ;
    unit-test-really $(target) : $(source) : $(properties) ;
}

actions announce
{
    $(.SHELL_SET)name=$(TEST_NAME)
    $(TEST_PRECOMMAND:E=echo) $(TEST_PRECOMMAND_OUTPUT)
}

rule unit-test-really ( target : source : properties * )
{
    run-path-setup $(target) : $(source) : $(properties) ;
}

actions unit-test-really
{
    $(PATH_SETUP)
    $(LAUNCHER) $(>) $(ARGS)
    $(.SET_STATUS)
    if $(.STATUS_0)
      $(.MAKE_FILE) $(<)
    $(.ENDIF)
    $(.SHELL_SET)name=$(TEST_NAME)
    $(TEST_POSTCOMMAND:E=echo) $(TEST_POSTCOMMAND_OUTPUT)
    exit $(.STATUS)
}

But this still aggregates output.

Thanks,
Matt