Mutineer vs MutPy
Mutineer
github.comMutPy
github.comSide by side
| Figure | Mutineer | MutPy |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Linux | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 0 | 1 |
| Spec score · Mutation Testing Tools | 6.5 (#24) | 7.9 (#7) |
| License | The project is published under the MIT license. | The project is licensed under the Apache License, Version 2.0. |
| Purpose | Mutineer is a mutation testing framework for JavaScript and TypeScript that changes source code and runs existing tests to reveal defects the tests miss. | MutPy is a mutation testing tool for Python source code that evaluates the quality of software tests. |
| Reports | The CLI supports text and JSON reports, with JSON written to mutineer-report.json. | MutPy can generate YAML and HTML reports and colorful console output. |
| Test runners | It is built for Vitest, has first class Jest support, and allows other test runners through an adapter interface. | It supports unittest by default and pytest experimentally. |
Plans
In their own words
MutPy
MutPy is a mutation testing tool for Python that checks whether a test suite catches changes to its source code. It creates mutations at the abstract syntax tree level, then runs tests to reveal which changes go undetected. The project describes compatibility with Python 3.3 and later. It uses unittest by default, while pytest support is experimental. Reports can be generated in YAML or HTML, and coverage analysis can restrict mutation to code exercised by tests. Users can also select or disable operators and sample a percentage of mutants. MutPy supports higher order mutations and includes standard and experimental operator sets. Installation is documented through pip from PyPI or from the repository source. The software is free at free and licensed under Apache License 2.0. PyPI lists version 0.6.1, released November 17, 2019, as the latest release. The README warns that disabling stdout can damage tests that interact with sys.stdout.