Gretel Claim

Gretel is a test coverage monitoring tool for Java programs. The current version provides statement coverage monitoring (identifying which lines of Java have been executed, and which have not been touched by testing).

The primary difference between Gretel and other coverage monitoring tools is that Gretel implements residual test coverage monitoring: After you run a program that has been instrumented with Gretel, Gretel can re-instrument the program and remove instrumentation for those parts that have already been executed. Since most programs spend most of their time in a few small regions, which are easily covered in the first few test runs, residual re-instrumentation with Gretel greatly reduces the performance penalty of test coverage monitoring.