1 files changed, 35 insertions, 0 deletions
diff --git a/test/scheduler/test_io.rb b/test/scheduler/test_io.rb
new file mode 100644
index 0000000000..ef46d1ac2c
--- /dev/null
+++ b/test/scheduler/test_io.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+require 'test/unit'
+require_relative 'scheduler'
+
+class TestSchedulerIO < Test::Unit::TestCase
+  MESSAGE = "Hello World"
+
+  def test_read
+    skip unless defined?(UNIXSocket)
+
+    i, o = UNIXSocket.pair
+    skip unless i.nonblock? && o.nonblock?
+
+    message = nil
+
+    thread = Thread.new do
+      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
+
+    thread.join
+
+    assert_equal MESSAGE, message
+  end
+end