1 files changed, 10 insertions, 0 deletions
diff --git a/spec/ruby/core/io/read_nonblock_spec.rb b/spec/ruby/core/io/read_nonblock_spec.rb
index 2b314987bc..69ddc3848d 100644
--- a/spec/ruby/core/io/read_nonblock_spec.rb
+++ b/spec/ruby/core/io/read_nonblock_spec.rb
@@ -43,6 +43,16 @@ describe "IO#read_nonblock" do
     end
   end
 
+  platform_is_not :windows do
+    it 'sets the IO in nonblock mode' do
+      require 'io/nonblock'
+      @read.nonblock?.should == false
+      @write.write "abc"
+      @read.read_nonblock(1).should == "a"
+      @read.nonblock?.should == true
+    end
+  end
+
   it "returns at most the number of bytes requested" do
     @write << "hello"
     @read.read_nonblock(4).should == "hell"