https://git.ruby-lang.org/ruby.git/commit/?id=9f6a3d0306

From 9f6a3d030682e9f99c77c2ef31881f9801c3979e Mon Sep 17 00:00:00 2001
From: Samuel Williams <samuel.williams@o...>
Date: Sat, 18 Jul 2020 17:34:54 +1200
Subject: Add multi-threaded I/O test.


diff --git a/test/fiber/test_io.rb b/test/fiber/test_io.rb
index bf20006..90ac4aa 100644
--- a/test/fiber/test_io.rb
+++ b/test/fiber/test_io.rb
@@ -39,4 +39,27 @@ class TestFiberIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/fiber/test_io.rb#L39
     assert_predicate(i, :closed?)
     assert_predicate(o, :closed?)
   end
+  
+  def test_heavy_read
+    skip unless defined?(UNIXSocket)
+
+    16.times.map do
+      thread = Thread.new do
+        i, o = UNIXSocket.pair
+        
+        scheduler = Scheduler.new
+        Thread.current.scheduler = scheduler
+
+        Fiber do
+          message = i.read(20)
+          i.close
+        end
+
+        Fiber do
+          o.write("Hello World")
+          o.close
+        end
+      end
+    end.each(&:join)
+  end
 end
-- 
cgit v0.10.2


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