Mutation Testing is a technique that results in a more meaningful metric than code coverage, that is test coverage. It shows whether the existing unit tests would actually catch a bug if it would occur in the corresponding unit under test.
This folder contains a Maven and a Gradle example of Pitest. See my Jenkins sandbox for an example of how Pitest can be used in pipeline as code.
This folder contains an example of Stryker.
This folder contains an example of Mutant
This folder contains an example of Infection
This folder contains an example of Muter
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