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MuJava vs Stryker Dashboard

MuJava

albany.edu

Stryker Dashboard

dashboard.stryker-mutator.io

Side by side

FigureMuJavaStryker Dashboard
Price fromFreeFree
Free planYesYes
Free trial——
Open source——
Web—Yes
WindowsYes—
macOSYes—
LinuxYes—
API—Yes
Plans published11
Spec score · Mutation Testing Tools8.4 (#3)7.2 (#17)
LicenseThe project was released as open source under the Apache license in April 2015.The Stryker site states that Stryker is released under the Apache 2.0 license.
PurposeMuJava automatically generates mutants for Java programs for traditional method-level and class-level mutation testing.Stryker Dashboard hosts mutation testing reports online and provides a mutation score badge for repositories.
SupportThe maintainers offer MuJava as-is and do not guarantee question answering, fault fixing, or improvements.The documentation links to the Stryker community Slack for community contact.

Plans

MuJava

  • µJavaFree

MuJava pricing →

Stryker Dashboard

  • FreeFree

Stryker Dashboard pricing →

In their own words

MuJava

MuJava is a free, open-source tool for mutation testing of Java programs. It generates mutants for individual classes and packages, using 24 class-level operators as well as method-level operators, then runs tests against those mutants and evaluates mutation coverage. Tests must be JUnit test cases with public test classes and methods that call the classes under test; JUnit test suites are not supported. Equivalent mutants require manual identification, and the documentation says they typically make up 5% to 20% of mutants. Version 4 supports Java 1.6 language features, including generics, annotations, enumerations, varargs, enhanced for-each loops and static imports. Setup uses two JAR files and a configuration file, with Java CLASSPATH and PATH configuration. The documented workflow uses Java GUI applications; a command-line interface called muScript was released in March 2014, and an Eclipse plugin was created in 2007. The project is provided as-is, without guarantees of answers, repairs or improvements. It is available for Linux, macOS and Windows.

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Stryker Dashboard

Stryker Dashboard is a free, open-source web service for publishing mutation-testing reports and displaying a mutation score badge for repositories. It accepts reports from mutation-testing frameworks that follow the mutation testing report schema, with named language coverage for JavaScript, TypeScript, C#, Scala, and other compatible frameworks. Users enable a repository by signing in with GitHub. Reports can arrive through a Stryker dashboard reporter or by HTTP PUT, authenticated with an API key in STRYKER_DASHBOARD_API_KEY or the X-Api-Key header. Documentation lists full reports, mutation-score reports, and dashboard settings for Stryker, Stryker.NET, and Stryker4s. The API can group multiple reports for one version with an optional module value, useful for monorepos, or accept a score-only report for a badge without storing other report information. Automatic project and version retrieval is documented for Travis, CircleCI, and GitHub Actions across those implementations; Azure DevOps and GitLab CI are supported only for Stryker.NET. The backend currently supports github.com as its Git provider.

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