1. A method of using a computer infrastructure to test changes to rules, said method comprising the steps of: providing regression test buckets for testing a version of a rule encoded in a file on a test rules management system deployed on said computer infrastructure against each of a plurality of exploiting systems that exploits said rule by using a rules change management engine deployed on said computer infrastructure; receiving, into said test rules management system, a test request for a rules change for a rule from said rules change management engine; determining for said test request for said rules change received, by said test rules management system, which of said regression test buckets should be executed against which of said plurality of exploiting systems that exploits said rule; running, using said test rules management system, said regression test buckets that are determined should be executed; and implementing, using said rules change management engine deployed on said computer infrastructure said rules change for said rule based on said regression test buckets executed in said running step on said test rules management system.