Feature Idea: Mutation Testing Support in Twister

[TK5090]

Hi everyone,

I was thinking it could be really interesting if Twister supported mutation testing.

The basic idea:

Twister would take the C source files under test,

apply targeted mutations (e.g. change operators, tweak constants, invert conditions),

rebuild the project,

run the tests again and check if the test suite “kills” the mutant.

Why this could be useful:

It helps developers see immediately where tests have blind spots.

Twister could offer a “mutation mode” similar to existing test/coverage modes.

Reports could include a mutation score, much like coverage reports.

Questions to the community:
➡️ Would this be valuable as a new feature in Twister?
➡️ Has there already been any discussion or workaround in this direction?

Best regards 👋