cargo-mutants vs MutPy
cargo-mutants
mutants.rsMutPy
github.comSide by side
| Figure | cargo-mutants | MutPy |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 0 | 1 |
| Spec score · Mutation Testing Tools | 7.5 (#12) | 7.9 (#7) |
| Installation | The guide documents installation with `cargo install --locked cargo-mutants`, `cargo binstall`, or binaries from GitHub releases. | The project README gives pip installation and source installation instructions. |
| Purpose | cargo-mutants is a mutation testing tool for Rust that finds places where bugs could be inserted without causing tests to fail. | MutPy is a mutation testing tool for Python source code that evaluates the quality of software tests. |
| Test runners | Useful results require reliable, non-flaky tests that run under `cargo test` or `cargo nextest`. | It supports unittest by default and pytest experimentally. |
Plans
In their own words
cargo-mutants
cargo-mutants has no write-up on Specifiction yet; its figures are above.
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.