Mutatest
7.2#1 in mutation testing toolsFree planFree planAPILinuxmacOSSelf-hosted
VisitMutatest vs mutator
What both publish
| Fact | Mutatest | mutator |
|---|---|---|
| Mutation method | It uses Python’s Abstract Syntax Tree grammar to produce valid mutants and changes local __pycache__ files instead of source files. | It uses abstract syntax tree analysis and mutation operators for arithmetic, comparisons, logic, constants, return values, and statement deletion. |
| Mutation operators | Supported operators include arithmetic, bitwise, Boolean, comparison, membership, identity, conditional and index mutations. | Its operators include arithmetic, comparison and logical changes, constant and return-value replacements, and statement deletions. |
| Purpose | Mutatest is a diagnostic command-line tool for assessing test coverage by checking whether tests detect small code mutations. | mutator is an automated mutation testing tool for the R language that checks whether a test suite detects systematic changes to source code. |
Mutatest plans
- MutatestFree
mutator plans
No prices published.
Pick Mutatest if…
Mutatest suits Python developers who want to check whether their tests detect code changes, especially when they need mutation thresholds in automated runs. It is intended for diagnostic use rather than repeated runs across an entire codebase on every commit.
Pick mutator if…
mutator is for R developers assessing and improving package test suites. It suits projects using testthat, tinytest, or installed-test layouts.