From 679054208e320d4e639aa3dc1f16ad1a4945ac72 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 15 Oct 2021 01:23:36 +0900
Subject: [PATCH] Use `__dir__`

---
 tool/lib/test/unit.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/lib/test/unit.rb b/tool/lib/test/unit.rb
index 15e290e5f1..45c751033b 100644
--- a/tool/lib/test/unit.rb
+++ b/tool/lib/test/unit.rb
@@ -329,7 +329,7 @@ module Test
         def self.launch(ruby,args=[])
           scale = EnvUtil.timeout_scale
           io = IO.popen([*ruby, "-W1",
-                        "#{File.dirname(__FILE__)}/unit/parallel.rb",
+                        "#{__dir__}/unit/parallel.rb",
                         *("--timeout-scale=#{scale}" if scale),
                         *args], "rb+")
           new(io, io.pid, :waiting)