Mutant
6.7#3 in mutation testing toolsFrom $250 a yearFree planLinuxmacOS
Visit| Fact | Mutant | Mutode |
|---|---|---|
| Mutation operators | Mutant mutates arithmetic, logical and bitwise operators, removes statements, and modifies return values. | Documented operators include changing literals and conditionals, altering math operators, and removing code elements such as array elements, function arguments, lines, and switch cases. |
| Purpose | Mutant is mutation testing for Ruby that systematically modifies code and verifies that tests catch each change. | Mutode performs mutation testing for Node.js and JavaScript. |
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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.
Mutode suits JavaScript and Node.js developers who want mutation testing within npm projects. It fits teams reviewing test detection through configurable operators and concurrent runners.