Fault-based testing in the absence of an oracle

Although testing is the most popular method for assuring software quality, there are two recognized limitations, known as the reliable test set problem and the oracle problem. Fault-based testing is an attempt by Morell to alleviate the reliable test set problem. In this paper, we propose to enhance fault-based testing to address the oracle problem as well. We present an integrated method that combines metamorphic testing with fault-based testing using real and symbolic inputs.