From a2b3f2014cf15daa4b608b82a8432b46a13c0e54 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 26 Jun 2022 15:09:56 +0900
Subject: [PATCH] [ruby/irb] Require stringio to use StringIO

https://github.com/ruby/irb/commit/e024ab716b
---
 test/irb/test_context.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/irb/test_context.rb b/test/irb/test_context.rb
index ad842c2725..b041403cb9 100644
--- a/test/irb/test_context.rb
+++ b/test/irb/test_context.rb
@@ -132,6 +132,7 @@ module TestIRB
     end
 
     def test_output_to_pipe
+      require 'stringio'
       input = TestInputMethod.new(["n=1"])
       input.instance_variable_set(:@stdout, StringIO.new)
       irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)