https://git.ruby-lang.org/ruby.git/commit/?id=0e2d8c487c

From 0e2d8c487c42aa311d329d1f44963cf002e0e598 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Fri, 31 Jul 2020 14:02:42 +0900
Subject: [rubygems/rubygems] unset XDG_* environmental variables for testing
 of rubygems.

https://github.com/rubygems/rubygems/commit/539fd9a39a

diff --git a/lib/rubygems/test_case.rb b/lib/rubygems/test_case.rb
index 69f6e6d..7bf7142 100644
--- a/lib/rubygems/test_case.rb
+++ b/lib/rubygems/test_case.rb
@@ -296,6 +296,9 @@ class Gem::TestCase < Minitest::Test https://github.com/ruby/ruby/blob/trunk/lib/rubygems/test_case.rb#L296
 
     ENV['GEM_VENDOR'] = nil
     ENV['GEMRC'] = nil
+    ENV['XDG_CACHE_HOME'] = nil
+    ENV['XDG_CONFIG_HOME'] = nil
+    ENV['XDG_DATA_HOME'] = nil
     ENV['SOURCE_DATE_EPOCH'] = nil
     ENV["TMPDIR"] = @tmp
 
-- 
cgit v0.10.2


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