We are working on billing system (java based module)for that we would like to have a testing framework. That testing framework should be able to adoptable for any type of billing scenarios(eg: utility bill payments, water/electricity/or any other type billing) Normally the billing entity have common attributes like customer name/usage/ etc..I would like to pick a suitable testing platform to test our billing module.
It can be opensource/licensed software.
Can anybody suggest such a framework/engine?
I would suggest following based on your given little description about your need :
1 - For functionality testing and to make all your scenarios automate use Selenium WebDriver
2 -Then if you want to priorities your testes , want to run tests through XML , want to run multiple tests then you can use TestNG Framework
Above are totally open source tool and you will get real benefit of those by scripting. They allow you to do scripting using programming languages like Java , Python , ruby and a little more. You will get all details once you visit my given links in above 2 points.
According to your given requirements I think above 2 tools are enough to make everything automate for testing.