PIT 0.21 This release contains major performance improvement Powermock support, improved http://www.aliyun.com/zixun/aggregation/34373.html "> error reporting, and support for excluding certain test and mutation analysis classes. Also included is a problem fix (broken dependency analysis), and through the operation of MAVEN to prevent infection of their own dependent classpath changes.
Pit is a Java fast bytecode based on a mutation test system that allows you to perform your unit tests more efficiently. Mutation testing is either an automated test or a deeper code overlay. Unlike traditional line and branch coverage tools, Pit is not just about confirming testing and executing code, but it can actually detect your failures on the test.
Download Address: http://code.google.com/p/pitestrunner/downloads/detail?name=pitest-0.21.jar&can=2&q=