See the paper "On the Danger of Coverage Directed Test Case Generation". http://link.springer.com/chapter/10.1007%2F978-3-642-28872-2_28 http://link.springer.co

See the paper "On the Danger of Coverage Directed Test Case Generation". http://link.springer.com/chapter/10.1007%2F978-3-642-28872-2_28 http://link.springer.com/chapter/10.1007%2F978-3-642-28872-2... The idea is that a test suite can have 100% coverage and still be a very bad test suite.