1 files changed, 21 insertions, 5 deletions
diff --git a/test/irb/test_workspace.rb b/test/irb/test_workspace.rb
index f028fc3aa2..199ce95a37 100644
--- a/test/irb/test_workspace.rb
+++ b/test/irb/test_workspace.rb
@@ -1,13 +1,13 @@
 # frozen_string_literal: false
-require 'test/unit'
 require 'tempfile'
-require 'rubygems'
 require 'irb'
 require 'irb/workspace'
 require 'irb/color'
 
+require_relative "helper"
+
 module TestIRB
-  class TestWorkSpace < Test::Unit::TestCase
+  class WorkSpaceTest < TestCase
     def test_code_around_binding
       IRB.conf[:USE_COLORIZE] = false
       Tempfile.create('irb') do |f|
@@ -39,8 +39,8 @@ module TestIRB
     end
 
     def test_code_around_binding_with_existing_unreadable_file
-      skip 'chmod cannot make file unreadable on windows' if windows?
-      skip 'skipped in root privilege' if Process.uid == 0
+      pend 'chmod cannot make file unreadable on windows' if windows?
+      pend 'skipped in root privilege' if Process.uid == 0
 
       Tempfile.create('irb') do |f|
         code = "IRB::WorkSpace.new(binding)\n"
@@ -80,6 +80,22 @@ module TestIRB
       assert_equal(nil, workspace.code_around_binding)
     end
 
+
+    def test_toplevel_binding_local_variables
+      bug17623 = '[ruby-core:102468]'
+      bundle_exec = ENV.key?('BUNDLE_GEMFILE') ? ['-rbundler/setup'] : []
+      top_srcdir = "#{__dir__}/../.."
+      irb_path = nil
+      %w[exe libexec].find do |dir|
+        irb_path = "#{top_srcdir}/#{dir}/irb"
+        File.exist?(irb_path)
+      end or omit 'irb command not found'
+      assert_in_out_err(bundle_exec + ['-W0', "-C#{top_srcdir}", '-e', <<~RUBY, '--', '-f', '--'], 'binding.local_variables', /\[:_\]/, [], bug17623)
+        version = 'xyz' # typical rubygems loading file
+        load('#{irb_path}')
+      RUBY
+    end
+
     private
 
     def with_script_lines