1 files changed, 21 insertions, 0 deletions
diff --git a/spec/ruby/library/win32ole/win32ole_param/retval_spec.rb b/spec/ruby/library/win32ole/win32ole_param/retval_spec.rb
new file mode 100644
index 0000000000..90946c0774
--- /dev/null
+++ b/spec/ruby/library/win32ole/win32ole_param/retval_spec.rb
@@ -0,0 +1,21 @@
+platform_is :windows do
+  require 'win32ole'
+
+  describe "WIN32OLE_PARAM#retval?" do
+    before :each do
+      ole_type_detail = WIN32OLE_TYPE.new("Microsoft Scripting Runtime", "FileSystemObject")
+      m_copyfile = WIN32OLE_METHOD.new(ole_type_detail, "CopyFile")
+      @param_overwritefiles = m_copyfile.params[2]
+    end
+
+    it "raises ArgumentError if argument is given" do
+      lambda { @param_overwritefiles.retval?(1) }.should raise_error ArgumentError
+    end
+
+    it "returns false for 3rd parameter of FileSystemObject's 'CopyFile' method" do
+      @param_overwritefiles.retval?.should be_false
+    end
+
+  end
+
+end