igorwojda / kotlin-mutation-testing

Updated repo for How to improve the quality of tests using mutation testing article.

Run Mutation Tests

Cmd ./gradlew pitest --rerun-tasks (--rerun-tasks flag is required to display cmd output in the following runs)

or

PIT Mutation Testing IDEA plugin Run->Edit Configurations->Defaults->Pit Runner

Setup

1. PIT

pitest {
    setProperty("pitestVersion", "1.9.0")
    ...
}

2. pitest-junit5-plugin - adds support to pitest for JUnit 5 and the Jupiter api (requires specific versions of JUnit add pitest ):

pitest {
    setProperty("junit5PluginVersion", "1.1.0")
    ...
}

1. gradle-pitest-plugin - provides an ability to perform a mutation testing and calculate a mutation coverage of a Gradle-based projects with PIT

id("info.solidsoft.pitest") version "1.9.0"