Skip io_write hook as it's currently borked.

Author: ioquatix

lib/async/scheduler.rb

@@ -179,8 +179,10 @@ def io_read(io, buffer, length, offset = 0)
 				@selector.io_read(Fiber.current, io, buffer, length, offset)
 			end
 
-			def io_write(io, buffer, length, offset = 0)
-				@selector.io_write(Fiber.current, io, buffer, length, offset)
+			if RUBY_ENGINE != "ruby" || RUBY_VERSION >= "3.3.0"
+				def io_write(io, buffer, length, offset = 0)
+					@selector.io_write(Fiber.current, io, buffer, length, offset)
+				end
 			end
 		end
 

test/async/scheduler/io.rb

@@ -60,5 +60,12 @@
 		ensure
 			s2.close
 		end
+		
+		it "can puts empty string" do
+			IO.pipe do |input, output|
+				output.puts ""
+				expect(input.gets).to be == $/
+			end
+		end
 	end
 end