https://git.ruby-lang.org/ruby.git/commit/?id=4d844cbaed

From 4d844cbaed518743776594fa5ae33b86fe176ad1 Mon Sep 17 00:00:00 2001
From: Sutou Kouhei <kou@c...>
Date: Tue, 28 May 2019 06:04:19 +0900
Subject: [ruby/fiddle] test: use env Hash

https://github.com/ruby/fiddle/commit/a01a962342

diff --git a/test/fiddle/test_import.rb b/test/fiddle/test_import.rb
index e243105..3170e9e 100644
--- a/test/fiddle/test_import.rb
+++ b/test/fiddle/test_import.rb
@@ -149,18 +149,21 @@ module Fiddle https://github.com/ruby/ruby/blob/trunk/test/fiddle/test_import.rb#L149
     end
 
     def test_no_message_with_debug
-      # disable all Ruby environment variables
-      orig_RUBYOPT, ENV['RUBYOPT'] = ENV['RUBYOPT'], nil
-      orig_RUBYLIB, ENV['RUBYLIB'] = ENV['RUBYLIB'], nil
-
       # load development fiddle instead of bundled one
       libdir = File.expand_path('../../../lib', __FILE__)
-      ENV['RUBYLIB'] = libdir if File.file?(File.join(libdir, "fiddle/import.rb"))
-
-      assert_in_out_err(%w[--debug --disable=gems -rfiddle/import], 'p Fiddle::Importer', ['Fiddle::Importer'])
-    ensure
-      ENV['RUBYLIB'] = orig_RUBYLIB
-      ENV['RUBYOPT'] = orig_RUBYOPT
+      libdir = nil unless File.file?(File.join(libdir, "fiddle/import.rb"))
+      assert_in_out_err([
+                          # disable all Ruby environment variables
+                          {
+                            "RUBYOPT" => nil,
+                            "RUBYLIB" => libdir,
+                          },
+                          "--debug",
+                          "--disable=gems",
+                          "-rfiddle/import",
+                        ],
+                        'p Fiddle::Importer',
+                        ['Fiddle::Importer'])
     end
   end
 end if defined?(Fiddle)
-- 
cgit v0.10.2


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