Mutant
6.7#3 in mutation testing toolsFrom $250 a yearFree planLinuxmacOS
Visit| Fact | Mutant | muttest-rs |
|---|---|---|
| Purpose | Mutant is mutation testing for Ruby that systematically modifies code and verifies that tests catch each change. | muttest-rs is a Rust mutation testing tool for evaluating whether a test suite catches simulated bugs. |
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Mutant suits Ruby developers who want to check whether their tests detect code changes, including teams using the listed test frameworks or supported Rails versions. Its open-source plan is for public repositories; commercial use requires a per-developer subscription.
It suits Rust crate developers using Cargo tests to assess test detection of code changes. It is useful when surviving-mutant reports are part of the review process.