gen-tests.perl

#!/usr/bin/perl -w
# rocco // vim: ts=2 sw=2 expandtab

use strict;
use File::Spec;
use File::Path;

BEGIN {
  eval "require POE::Test::Loops";
  if ($@) {
    warn "Could not load POE::Test::Loops.  Skipping loop tests";
    exit;
  }
}

my $test_base = "t";

### Resources, and their perl and XS implementations.

{
  my $base_dir = File::Spec->catfile($test_base, "20_resources");
  my $base_lib = File::Spec->catfile($base_dir,  "00_base");

  my %derived_conf = (
    "10_perl" => { implementation => "perl" },
# TODO - Enable when an XS implementation arrives.
#    "20_xs"   => { implementation => "xs"   },
  );

  my $source = (
    "#!/usr/bin/perl -w\n" .
    "\n" .
    "use strict;\n" .
    "use lib qw(--base_lib--);\n" .
    "use Test::More;\n" .
    "\n" .
    "\$ENV{POE_IMPLEMENTATION} = '--implementation--';\n" .
    "\n" .
    "require '--base_file--';\n" .
    "\n" .
    "CORE::exit 0;\n"
  );

  derive_files(
    base_dir     => $base_dir,
    base_lib     => $base_lib,
    derived_conf => \%derived_conf,
    src_template => $source,
  );
}

### Event loops and the tests that love them.

{
  my $base_dir = File::Spec->catfile($test_base, "30_loops");

  my @loops = qw(Select IO::Poll);
  POE::Test::Loops::generate($base_dir, \@loops);
}

exit 0;

sub derive_files {
  my %conf = @_;

  my $base_dir = $conf{base_dir};

  # Gather the list of base files.  Each will be used to generate a
  # real test file.

  opendir BASE, $conf{base_lib} or die $!;
  my @base_files = grep /\.pm$/, readdir(BASE);
  closedir BASE;

  # Generate a set of test files for each configuration.

  foreach my $dst_dir (keys %{$conf{derived_conf}}) {
    my $full_dst = File::Spec->catfile($base_dir, $dst_dir);
    $full_dst =~ tr[/][/]s;
    $full_dst =~ s{/+$}{};

    my %template_conf = %{$conf{derived_conf}{$dst_dir}};

    # Blow away any previously generated test files.

    rmtree($full_dst);
    mkpath($full_dst, 0, 0755);

    # For each base file, generate a corresponding one in the
    # configured destination directory.  Expand various bits to
    # customize the test.

    foreach my $base_file (@base_files) {
      my $full_file = File::Spec->catfile($full_dst, $base_file);
      $full_file =~ s/\.pm$/.t/;

      # These hardcoded expansions are for the base file to be
      # required, and the base library directory where it'll be found.

      my $expanded_src = $conf{src_template};
      $expanded_src =~ s/--base_file--/$base_file/g;
      $expanded_src =~ s/--base_lib--/$conf{base_lib}/g;

      # The others are plugged in from the directory configuration.

      while (my ($key, $val) = each %template_conf) {
        $expanded_src =~ s/--\Q$key\E--/$val/g;
      }

      # Write with lots of error checking.

      open EXPANDED, ">$full_file" or die $!;
      print EXPANDED $expanded_src;
      close EXPANDED or die $!;
    }
  }
}