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    my $test_config = $self->{test_config};

    my $rev = $test_config->server->{rev};
    my $ver = $test_config->server->{version};

    # sanity checking and loading the right mod_perl version

    # remove mod_perl.pm from %INC so that the below require()
    # calls accurately populate $mp_ver
    delete $INC{'mod_perl.pm'};

    if ($rev == 2) {
        eval { require mod_perl2 };
    } else {
        eval { require mod_perl };
    }

    my $mp_ver = $mod_perl::VERSION;
    if ($@) {
        error "You are using mod_perl response handlers ",
            "but do not have a mod_perl capable Apache.";
        Apache::TestRun::exit_perl(0);
    }
    if (($rev == 1 && $mp_ver >= 1.99) ||
        ($rev == 2 && $mp_ver <  1.99)) {
        error "Found mod_perl/$mp_ver, but it can't be used with $ver";
        Apache::TestRun::exit_perl(0);
    }

    if ($rev == 2) {
        # load apreq2 if it is present
        # do things a bit differently that find_and_load_module()
        # because apreq2 can't be loaded that way (the 2 causes a problem)
        my $name = 'mod_apreq2.so';
        if (my $mod_path = $test_config->find_apache_module($name)) {

            # don't match the 2 here
            my ($sym) = $name =~ m/mod_(\w+)2\./;

            if ($mod_path && -e $mod_path) {
                $test_config->preamble(IfModule => "!mod_$sym.c",
                            qq{LoadModule ${sym}_module "$mod_path"\n});
            }
        }
    }

    $test_config->preamble_register(qw(configure_libmodperl
                                       configure_env));

    $test_config->postamble_register(qw(configure_inc
                                        configure_pm_tests_inc
                                        configure_startup_pl
                                        configure_pm_tests));
}

sub configure {
    my $self = shift;

    $self->configure_modperl;

    $self->SUPER::configure;
}

#if Apache::TestRun refreshes config in the middle of configure
#we need to re-add modperl configure hooks
sub refresh {
    my $self = shift;
    $self->SUPER::refresh;
    $self->configure_modperl;
}

1;
__END__

=head1 NAME

Apache::TestRunPerl - Run mod_perl-requiring Test Suite

=head1 SYNOPSIS

  use Apache::TestRunPerl;
  Apache::TestRunPerl->new->run(@ARGV);

=head1 DESCRIPTION

The C<Apache::TestRunPerl> package controls the configuration and
running of the test suite. It's a subclass of C<Apache::TestRun>, and
should be used only when you need to run mod_perl tests.

Refer to the C<Apache::TestRun> manpage for information on the
available API.

=cut