From b5498bf1ca9a25dc89119ef1494ac7805538988c Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Mon, 1 May 2023 17:10:17 +0200
Subject: [PATCH] Cleanup guards for Dir.fchdir spec

* See https://github.com/ruby/ruby/pull/7135#discussion_r1181641096
---
 core/dir/fchdir_spec.rb | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/core/dir/fchdir_spec.rb b/core/dir/fchdir_spec.rb
index 08b1cdfc7..429e56969 100644
--- a/core/dir/fchdir_spec.rb
+++ b/core/dir/fchdir_spec.rb
@@ -2,17 +2,7 @@
 require_relative 'fixtures/common'
 
 ruby_version_is '3.3' do
-  has_fchdir = begin
-    dir = Dir.new('.')
-    Dir.fchdir(dir.fileno)
-    true
-  rescue NotImplementedError, NoMethodError
-    false
-  ensure
-    dir.close
-  end
-
-  guard -> { has_fchdir } do
+  guard -> { Dir.respond_to? :fchdir } do
     describe "Dir.fchdir" do
       before :all do
         DirSpecs.create_mock_dirs
@@ -67,7 +57,7 @@
     end
   end
 
-  guard_not -> { has_fchdir } do
+  guard_not -> { Dir.respond_to? :fchdir } do
     describe "Dir.fchdir" do
       it "raises NotImplementedError" do
         -> { Dir.fchdir 1 }.should raise_error(NotImplementedError)