More informative mutation pre-run feedback

[cbrunnkvist]

Summary

At the start of the program, I see the following output:

15:17:59.096 [pool-49-thread-1] INFO  stryker4s.mutants.Mutator - Found 12 of 14 file(s) to be mutated.
15:17:59.097 [pool-49-thread-1] INFO  stryker4s.mutants.Mutator - 257 Mutant(s) generated.
15:17:59.473 [scala-execution-context-global-367] INFO  stryker4s.sbt.runner.SbtMutantRunner - Setting up mutated environment...

Now, I don't necessarily want to sit and wait for 257 runs. I'm curious about where they are applied - if some files are particularly influential for the amount of mutants, I could very well exclude them just to be able to get some result to start my manual mutation test evaluation from.

Perhaps it could something about what the plan looks like:

File                        Generated mutants
app.scala                   5
path/whatever/util.scala    19

at least when logLevel is Debug.

[hugo-vrijswijk]

Thanks for creating this issue! I agree more and better information could be added. Logging the number of mutants per file should be relatively easy to add