PIT is a fast bytecode based mutation testing system for Java that makes it possible to test the effectiveness of your unit tests. You can think of mutation testing as either as an automated test of your tests or as a much more in-depth form of code coverage. Unlike traditional line and branch coverage tools, PIT does not just confirm that your tests execute your code, it confirms that your tests are actually able to detect faults in it.
| Tags | mutation testing fault seeding junit |
|---|---|
| Licenses | Apache 2.0 |
| Implementation | asm Java |
Recent releases


Release Notes: This release integrates pit with version control, allowing selective mutation based on the status of source files within the configured version control system. Also included is support for parameterised spock tests, junit param tests, and numerous other small fixes and improvements.


Release Notes: This release adds support for incremental mutation testing, improved Java 7 support, and several bugfixes.


Release Notes: This release adds inlined final block code detection, a new mutator for switch statements, detection of Groovy classes, support for JUnit3 suite methods, various bugfixes, and memory footprint and performance improvements.


Release Notes: This release adds improved HTML reports, adds support for avoid mutating assert statement code, and fixes a number of minor defects.


Release Notes: This release adds an Ant task, a new mutation operation, a fix for hangs caused in some circumstances when the code under test launched new threads, and a number of other small bugfixes and improvements.