Fixed failing spec and used alias_method instead of defining the same…

… method twice

lib/service_proxy/client.rb

@@ -78,9 +78,8 @@ def generate_methods
           call_service(options.update(:method => service_method))
         end
 
-        self.class.send(:define_method, ServiceProxy::Utils.underscore(service_method)) do |*args|
-          options = args.pop || {}
-          call_service(options.update(:method => service_method))
+        self.class.class_eval do
+          alias_method :"#{ServiceProxy::Utils.underscore(service_method)}", "#{service_method}"
         end
       end
     end

spec/service_proxy_spec.rb

@@ -21,8 +21,8 @@
         @proxy = proxy = ServiceProxy::Client.new('http://webservices.daehosting.com/services/isbnservice.wso?WSDL')
       end
 
-      it "should not require build or parse methods" do
-        @proxy.IsValidISBN13(:isbn => '978-0977616633').should == 'true'
+      it "should not raise an error without a build or parse method" do
+        lambda { @proxy.IsValidISBN13(:sISBN => '978-0977616633') }.should_not raise_error
       end
 
       it "should not use method_missing to call the service" do