how to add custom mutator class to org.pitest.mutationtest.engine.gregor.config.Mutator

[Jack van Heugten Breurkes]

I have created a custom mutator class, but I am not sure how to add this class to org.pitest.mutationtest.engine.gregor.config.Mutator so that I can use it.

Would I need to clone the pitest repository and modify that version of the class, then set up pitest to use my local custom version of gregor using the `mutationEngine` property?

I am using gradle for configuring pitest.

I am happy to clarify aspects of the problem, I am quite new to using pitest so am unsure of what information would be helpful.

[Henry Coles]

Unfortunately there isn't currently a way to inject a new mutator so, yes, you will have to clone and modify. It is possible to plug in an entirely different mutation engine, so that might be an option depending on what you are trying to do.

For an example of howto implement a different engine take a look at https://github.com/STAMP-project/pitest-descartes

Henry

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[alex cochrane]

I was looking through this group looking for how to do this exact thing. Have you had any success looking at descartes as an example? Did you finally get your mutation engine working, if so what steps did you take to get there?

Thank you,

Alex