Cosmic Ray vs go-mutesting

Cosmic Ray

5.8 #6 in Mutation Testing Tools

About Cosmic Ray

go-mutesting

5.2 #19 in Mutation Testing Tools

About go-mutesting
Cosmic Raygo-mutesting
Free planNoNo
Free trialNoNo
Paid from——
Open sourceNoNo
PlatformsLinux, self-hosted—
Free planYes—
Supported languagesPython 3Go
Test frameworksunittest, pytest, noseGo package tests
Incremental analysisYes—
Parallel executionYes—
Surviving mutant reportsYesYes
Mutation operatorsbinary operator replacement; boolean replacement; break/continue replacement; comparison operator replacement; exception replacement; keyword replacement; number replacement; decorator removal; unary operator replacement; zero-iteration for loopsBranch: case, if, else; expression: comparison, remove; statement: remove; Cosmos SDK: arithmetic, comparison

Both are listed in Best Mutation Testing Tools. On Samsung Mobile US Press, Cosmic Ray scores higher on our published basis.