From 57bc3f2f462df8e945ddfa5f9a8de45c1b0f0a86 Mon Sep 17 00:00:00 2001
From: Samuel Williams <samuel.williams@oriontransfer.co.nz>
Date: Sat, 25 Feb 2023 18:40:26 +1300
Subject: Add `IO::Buffer.string` for efficient string creation. (#7364)

---
 test/ruby/test_io_buffer.rb | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_io_buffer.rb b/test/ruby/test_io_buffer.rb
index d9fa22fd2a..55e347471d 100644
--- a/test/ruby/test_io_buffer.rb
+++ b/test/ruby/test_io_buffer.rb
@@ -124,6 +124,20 @@ class TestIOBuffer < Test::Unit::TestCase
     end
   end
 
+  def test_string
+    result = IO::Buffer.string(12) do |buffer|
+      buffer.set_string("Hello World!")
+    end
+
+    assert_equal "Hello World!", result
+  end
+
+  def test_string_negative
+    assert_raise ArgumentError do
+      IO::Buffer.string(-1)
+    end
+  end
+
   def test_resize_mapped
     buffer = IO::Buffer.new
 
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