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ArcMutate vs MutPy

ArcMutate

arcmutate.com

MutPy

github.com

Side by side

FigureArcMutateMutPy
Price from$8/moFree
Free planYesYes
Free trialYes—
Open source——
WindowsYes—
macOSYes—
LinuxYesYes
Self-hostedYesYes
Plans published51
Spec score · Mutation Testing Tools8.6 (#2)7.9 (#7)
Intended usersThe maker describes use cases in automotive safety, banking, and healthcare software testing.PyPI classifies the package for developers and software testing.
Mutation featuresIts features include subsumption analysis to remove redundant mutants and extended mutation operators beyond standard PiTest.It supports higher order mutations and code coverage analysis.
PurposeArcMutate extends PiTest to find bugs missed by tests through mutation testing for Java, Kotlin, and Android software.MutPy is a mutation testing tool for Python source code that evaluates the quality of software tests.

Plans

ArcMutate

  • Open SourceFree
  • Base$8 a month
  • Pro$12 a month
  • Startup$15 a month
  • EnterprisePriced on request

ArcMutate pricing →

MutPy

  • MutPyFree

MutPy pricing →

In their own words

ArcMutate

ArcMutate has no write-up on Specifiction yet; its figures are above.

Visit arcmutate.com

MutPy

MutPy is a mutation testing tool for Python that checks whether a test suite catches changes to its source code. It creates mutations at the abstract syntax tree level, then runs tests to reveal which changes go undetected. The project describes compatibility with Python 3.3 and later. It uses unittest by default, while pytest support is experimental. Reports can be generated in YAML or HTML, and coverage analysis can restrict mutation to code exercised by tests. Users can also select or disable operators and sample a percentage of mutants. MutPy supports higher order mutations and includes standard and experimental operator sets. Installation is documented through pip from PyPI or from the repository source. The software is free at free and licensed under Apache License 2.0. PyPI lists version 0.6.1, released November 17, 2019, as the latest release. The README warns that disabling stdout can damage tests that interact with sys.stdout.

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