1. A method of evaluating a rules-driven processing of data by a data processing system comprising steps of creating a first set of data files simulating a variety of content types having predetermined classifications under a set of rules, seeding the first set of data files having predetermined classifications among a second set of data files that do not have predetermined classifications under the same set of rules into an electronic Enterprise Content Management system including both a physical storage layer and a workflow layer for processing the seeded first and second sets of data files, performing a data mining operation within the electronic Enterprise Content Management system for classifying the seeded first and second sets of data files according to the set of rules, and comparing the classifications of the first set of data files performed by the data mining operation with their predetermined classifications, and scoring results of the comparisons for evaluating the performance of the data mining operation.