1 files changed, 27 insertions, 0 deletions
diff --git a/spec/rubyspec/core/io/output_spec.rb b/spec/rubyspec/core/io/output_spec.rb
new file mode 100644
index 0000000000..ac3e781cee
--- /dev/null
+++ b/spec/rubyspec/core/io/output_spec.rb
@@ -0,0 +1,27 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "IO#<<" do
+  it "writes an object to the IO stream" do
+    lambda {
+      $stderr << "Oh noes, an error!"
+    }.should output_to_fd("Oh noes, an error!", $stderr)
+  end
+
+  it "calls #to_s on the object to print it" do
+     lambda {
+       $stderr << 1337
+    }.should output_to_fd("1337", $stderr)
+   end
+
+  it "raises an error if the stream is closed" do
+    io = IOSpecs.closed_io
+    lambda { io << "test" }.should raise_error(IOError)
+  end
+
+  it "returns self" do
+    lambda {
+      ($stderr << "to_stderr").should == $stderr
+    }.should output(nil, "to_stderr")
+  end
+end