Test data generation

Systems and methods for test data generation are described. In one implementation, the method includes receiving seed data (118-1) having one or more characteristics. Further, the method includes obtaining a selection criterion indicating a selected portion of the seed data (118-1) to be transformed. Based on the selection criterion, the seed data (118-1) is transformed for at least a plurality of iterations to generate test data (118-2). The test data (118-2) comprise a plurality of data sets including a primary data set (120-1) generated in a first iteration and a secondary data set (120-2) generated in each subsequent iteration. The primary data set (120-1) includes transformed data corresponding to the selected portion of the seed data (118-1) and non-transformed data corresponding to a remaining portion of the seed data (118-1) and each secondary data set (120-2) includes transformed data corresponding to the selected portion of the seed data (118-1).