https://github.com/stryker-mutator/stryker4s

Mutation testing for Scala
https://github.com/stryker-mutator/stryker4s

cats-effect hacktoberfest mutation-testing sbt sbt-plugin scala stryker test-automation testing testing-tools unit-testing

Last synced: about 1 month ago
JSON representation

Mutation testing for Scala

• Host: GitHub
• URL: https://github.com/stryker-mutator/stryker4s
• Owner: stryker-mutator
• License: apache-2.0
• Created: 2018-06-20T14:14:40.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2024-04-13T22:19:36.000Z (about 1 year ago)
• Last Synced: 2024-04-14T12:23:46.127Z (about 1 year ago)
• Topics: cats-effect, hacktoberfest, mutation-testing, sbt, sbt-plugin, scala, stryker, test-automation, testing, testing-tools, unit-testing
• Language: Scala
• Homepage: https://stryker-mutator.io
• Size: 2.86 MB
• Stars: 193
• Watchers: 7
• Forks: 36
• Open Issues: 33
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: docs/contributing.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

• awesome-scala - stryker4s - mutator/stryker4s)  (Table of Contents / Testing)
• fucking-awesome-scala - stryker4s - mutator/stryker4s)  (Table of Contents / Testing)
• fucking-awesome-scala - stryker4s - mutator/stryker4s)  (Table of Contents / Testing)

README

        
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![stryker-80x80](https://user-images.githubusercontent.com/10114577/59962899-d26b8d00-94eb-11e9-8e31-18b3d8d96fd3.png)

# Stryker4s

_Professor X: For someone who hates mutants... you certainly keep some strange company._  

_William Stryker: Oh, they serve their purpose... as long as they can be controlled._

## Introduction

For an introduction to mutation testing and Stryker's features, see [stryker-mutator.io](https://stryker-mutator.io/). Looking for mutation testing in [JavaScript](https://github.com/stryker-mutator/stryker) or [.NET](https://github.com/stryker-mutator/stryker-net)?

## Getting Started

For the quickstart, see [our website's quickstart](https://stryker-mutator.io/stryker4s/quickstart).

Stryker4s is a mutation testing framework for Scala. It allows you to test your tests by temporarily inserting bugs. Depending on your project setup, there are multiple ways to get started with Stryker4s.

## Sbt plugin

Stryker4s provides a sbt plugin for easy use within sbt projects. To install the plugin, add the following line to `plugins.sbt` [![Maven Central](https://img.shields.io/maven-central/v/io.stryker-mutator/stryker4s-core_2.12.svg?label=Maven%20Central&colorB=brightgreen)](https://search.maven.org/artifact/io.stryker-mutator/sbt-stryker4s):

```scala

addSbtPlugin("io.stryker-mutator" % "sbt-stryker4s" % stryker4sVersion)

```

After adding the plugin, Stryker4s can be used by running `sbt stryker` in the root of your project.

### Multi-module projects

Multi-module projects are not yet fully supported. However, there is a workaround you can use while we work on a better solution. Set the base-directory to the correct directory of the submodule with the [`base-dir` configuration setting](https://stryker-mutator.io/docs/stryker4s/configuration#base-dir-string). Then you can run `sbt "project yourSubmoduleNameHere" stryker` to set the active project and run Stryker4s.

## Maven plugin

The Maven plugin can be added as follows in `pom.xml` under `` [![Maven Central](https://img.shields.io/maven-central/v/io.stryker-mutator/stryker4s-core_2.12.svg?label=Maven%20Central&colorB=brightgreen)](https://search.maven.org/artifact/io.stryker-mutator/stryker4s-maven-plugin):

```xml

    io.stryker-mutator

    stryker4s-maven-plugin

    ${stryker4s.version}

```

You can then run Stryker4s with the command `mvn stryker4s:run`. Note that this is different than the command for the sbt plugin.

## Pre-release versions

We also publish SNAPSHOT versions of each commit on master. To use a pre-release, add the following setting to your `build.sbt` and `plugins.sbt`:

```scala

resolvers ++= Resolver.sonatypeOssRepos("snapshots")

```

Then replace the Stryker4s version with this version: [![Sonatype Nexus (Snapshots)](https://img.shields.io/nexus/s/https/oss.sonatype.org/io.stryker-mutator/stryker4s-core_2.12.svg)](https://oss.sonatype.org/content/repositories/snapshots/io/stryker-mutator/).

## Configuration

See the [configuration page](https://stryker-mutator.io/docs/stryker4s/configuration) for all the configuration options available in Stryker4s.

## Supported mutators

Stryker4s supports a variety of mutators, which can be found [here](https://stryker-mutator.io/docs/mutation-testing-elements/supported-mutators/).

Do you have a suggestion for a (new) mutator? Feel free to create an [issue](https://github.com/stryker-mutator/stryker4s/issues/new)!

An always up-to-date reference is also available in the [MutantMatcher source](core/src/main/scala/stryker4s/mutants/findmutants/MutantMatcher.scala).

## Changelog

See the [releases page](https://github.com/stryker-mutator/stryker4s/releases) for all the latest changes made.

## Contributing

Want to contribute? That's great! Please have a look at our [contributing guide](https://stryker-mutator.io/docs/stryker4s/contributing).