[PATCH] t/lib.perl: fix Perl integration tests w/o installation

[Eric Wong]

We can't rely on `ruby -I $PATH' args being passed to
subprocesses, so rely on the RUBYLIB environment instead.
---
 t/lib.perl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/t/lib.perl b/t/lib.perl
index b20a2c6..8c842b1 100644
--- a/t/lib.perl
+++ b/t/lib.perl
@@ -240,7 +240,9 @@ sub unicorn {
        state $eng = $ENV{TEST_RUBY_ENGINE} // `$ruby -e 'print RUBY_ENGINE'`;
        state $ext = File::Spec->rel2abs("test/$eng-$ver/ext/unicorn_http");
        state $exe = File::Spec->rel2abs("test/$eng-$ver/bin/unicorn");
-       my $pid = spawn(\%env, $ruby, '-I', $lib, '-I', $ext, $exe, @args);
+       state $rl = $ENV{RUBYLIB} ? "$lib:$ext:$ENV{RUBYLIB}" : "$lib:$ext";
+       $env{RUBYLIB} = $rl;
+       my $pid = spawn(\%env, $ruby, $exe, @args);
        UnicornTest::AutoReap->new($pid);
 }