Mutant
6.7#3 in mutation testing toolsFrom $250 a yearFree planLinuxmacOS
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| Fact | Mutant | Stryker Mutator |
|---|---|---|
| Purpose | Mutant is mutation testing for Ruby that systematically modifies code and verifies that tests catch each change. | Stryker performs mutation testing by inserting changes into code and running unit tests against the changed code to assess test effectiveness. |
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.
Stryker suits developers working in JavaScript, TypeScript, C#, or Scala who want to assess unit-test effectiveness. Its dashboard may suit open-source projects that want hosted reports or score badges.