From 00cd5d74cecb6aa4a184e57e2b8246ef6e45d458 Mon Sep 17 00:00:00 2001
From: Samuel Giddins <segiddins@segiddins.me>
Date: Tue, 14 Mar 2017 12:34:03 -0500
Subject: [rubygems/rubygems] [Require] Ensure -I beats a default gem

https://github.com/rubygems/rubygems/commit/6fbda98eb3
---
 lib/rubygems/test_case.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/rubygems/test_case.rb')

diff --git a/lib/rubygems/test_case.rb b/lib/rubygems/test_case.rb
index b6bb7ca93e..4b43df539d 100644
--- a/lib/rubygems/test_case.rb
+++ b/lib/rubygems/test_case.rb
@@ -739,6 +739,7 @@ class Gem::TestCase < (defined?(Minitest::Test) ? Minitest::Test : MiniTest::Uni
     spec.files = files
 
     lib_dir = File.join(@tempdir, "default_gems", "lib")
+    lib_dir.instance_variable_set(:@gem_prelude_index, lib_dir)
     $LOAD_PATH.unshift(lib_dir)
     files.each do |file|
       rb_path = File.join(lib_dir, file)
-- 
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