1 files changed, 6 insertions, 0 deletions
diff --git a/spec/ruby/core/file/realpath_spec.rb b/spec/ruby/core/file/realpath_spec.rb
index 0c5d19287a..bd27e09da6 100644
--- a/spec/ruby/core/file/realpath_spec.rb
+++ b/spec/ruby/core/file/realpath_spec.rb
@@ -67,6 +67,12 @@ platform_is_not :windows do
     it "raises Errno::ENOENT if the symlink points to an absent file" do
       -> { File.realpath(@fake_link) }.should raise_error(Errno::ENOENT)
     end
+
+    it "converts the argument with #to_path" do
+      path = mock("path")
+      path.should_receive(:to_path).and_return(__FILE__)
+      File.realpath(path).should == File.realpath(__FILE__ )
+    end
   end
 end