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Mutation testing for Scala

Results 46 stryker4s issues
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Rewrite of how Stryker4s looks for, and places mutants. The goal of this PR is to improve how mutants are placed, which should remove _most_ current bugs of unplaceable mutants....

enhancement

Currently when somebody reviews the report, looking for a good place to start working from, they can only see source locations of the surviving mutants, whether they have any coverage,...

enhancement

### Summary Trying to run stryker4s on my library: https://github.com/gaelrenoux/tranzactio/tree/Adds-mutation-testing (code available on that branch). Nothing in the configuration, I run `sbt stryker`. At first, I get this error: ```...

We should have some better debug logging related to how long certain tasks take. This would help in finding performance issues. Some ideas: - Duration of file parsing to AST's...

enhancement
good first issue
hacktoberfest

### Summary **In case of multi-module sbt projects, if we run each module one by one it generates multiple mutation testing reports. It would be great if we can combine...

enhancement

Bumps [maven-invoker](https://github.com/apache/maven-invoker) from 3.1.0 to 3.2.0. Release notes Sourced from maven-invoker's releases. 3.2.0 🚀 New features and improvements [MSHARED-1040] - Require Java 8 (#45) @​slawekjaranowski [MSHARED-1019] - Allow pass raw...

dependencies

Relates to: #36 ### Summary Trying to run stryker4s using command-runner fails because it does not pick up the `test-runner` configuration key and hence doesn't run the Gradle tests. Running...

bug

### Summary Almost all of my projects cannot upgrade Stryker version to 0.14.x, they still remain as 0.13.1 due to receiving ``` [error] stack trace is suppressed; run last stryker...

### Summary Currently we get errors from stryker where it fails to parse certain files and then we exclude it in stryker conf file. Then we again run the tests...

### Summary Some projects, with thousands of mutants, take a long time to start and then fail due to OOM. ``` [info] Found 115 of 146 file(s) to be mutated....

bug
help wanted