Iterative metamorphic testing

An enhanced version of metamorphic testing, namely n-iterative metamorphic testing, is proposed to systematically exploit more information out of metamorphic tests by applying metamorphic relations in a chain style. A contrastive case study, conducted within an integrated testing environment MTest, shows that n-iterative metamorphic testing exceeds metamorphic testing and special case testing in terms of their fault detection capabilities. Another advantage of n-iterative metamorphic testing is its high efficiency in test case generation.