1 files changed, 21 insertions, 0 deletions
diff --git a/spec/ruby/core/io/to_io_spec.rb b/spec/ruby/core/io/to_io_spec.rb
new file mode 100644
index 0000000000..76ebefb38f
--- /dev/null
+++ b/spec/ruby/core/io/to_io_spec.rb
@@ -0,0 +1,21 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "IO#to_io" do
+  before :each do
+    @io = IOSpecs.io_fixture "lines.txt"
+  end
+
+  after :each do
+    @io.close unless @io.closed?
+  end
+
+  it "returns self for open stream" do
+    @io.to_io.should equal(@io)
+  end
+
+  it "returns self for closed stream" do
+    io = IOSpecs.closed_io
+    io.to_io.should equal(io)
+  end
+end