Mutation Switching about muter HOT 4 OPEN

Hi @Tyler-Keith-Thompson, thanks for reaching out!
The feature you are referring is called mutant schemata and is for sure under our radar!
This is super complex and we are trying to figure out which one works best for swift and it's tooling.

You are 100% correct that this is a huge effort, that brings tons of questions, like: how do you inject the next mutation, without the need to recompile the entire project?

If you have any POC or ideas, please send it over, I would love to hear it!

from muter.

A related idea we've had is to use code coverage to be able to see which lines can be omitted from mutation testing because they're not even covered. Theoretically, if you track coverage for each test case, you'd know that two tests exercise mutually exclusive code, and therefore could have their mutations added in the same compile. I think.

from muter.

This paper has more details on this subject

from muter.