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 -> { @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