R Observatory: Metrics for mutator version 0.2.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mutator

0.2.1

Mutation Testing

0packages depend

131downloads / year

89.3%test coverage

13/13checks pass

Overview

About

Maintained by Pierre Donat-BouilludFirst published 2026-08-021 releasesCRAN page ↗GitHub ↗

Performs mutation testing for 'R' packages to assess the effectiveness of a test suite. It mutates source files, runs package tests against each mutant, and reports which mutants were killed, survived, or timed out. Parallel execution is supported for larger code bases. The optional 'imputesrcref' package, available from https://github.com/PRL-PRG/imputesrcref, improves source locations when installed.

Install

R (CRAN)pak (dev)Fedora (COPR)openSUSE (OBS)

install.packages("mutator", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("PRL-PRG/mutator")

Development version from PRL-PRG/mutator. Installs pak first if it is not already available.

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-mutator

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-mutator

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 8.0 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.97

89.3%

Coverage · measured lines

100%

Documentation · exports

9

Dependencies · direct

Check history

OK2026-08-05
11 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-04
8 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-08-03
6 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,131 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 83%
Documented parameters: 99%
Return-value docs: 100%
References docs: 0%

Downloads

131

CRAN downloads in the past year

Rank #24,561 · ~0/day · ~11/mo

mutator Releases R versions

Daily download trend is not available in this view yet.

13130 days

13190 days

1311 year

Compare downloads with other packages →

Repository

GitHub ↗ prl-prg/mutator

9Stars

1Forks

2Open issues

0Open PRs

5Releases

234Commits

2Contributors

mutation-testingr-languagetest-automationtesting

License GPL-3.0 · 234 commits · Last activity 2026-08-04

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/prl-prg/mutator on 2026-08-09.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

VS Code

Governance and community (1)

Funding

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

17 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (9)

jsonlite httr pkgload testthat future furrr callr covr R6

LinkingTo (1)

testthat

Suggests (7)

xml2 pkgbuild cli pbmcapply knitr rmarkdown tinytest

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Authors (2)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Assanali Amandykov

Author, Copyright holder

Copyright holders (2)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Assanali Amandykov

Author, Copyright holder

Package Timeline

1 release. R releases are shown for context.

0.2.1Latest
2026-08-02 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-08-02
Total releases: 1 / 1 yrs
License: GPL (>= 3) OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mutator")

Format

Donat-Bouillud, P., & Amandykov, A. (2026). mutator: Mutation Testing (Version 0.2.1) [Computer software]. https://doi.org/10.32614/CRAN.package.mutator

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for mutator version 0.2.1 [Data set]. HJJB, LLC. Data release v2026-08-11. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-11, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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