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Caught by the Fuzz! - A Minimalistic Fuzz-Test Runner

0packages depend
2.7Kdownloads / year
99.4%test coverage
13/13flavors OK

Overview

About

A simple runner for fuzz-testing functions in an R package's public interface. Fuzz testing helps identify functions lacking sufficient argument validation, and uncovers problematic inputs that, while valid by function signature, may cause issues within the function body.

Changes in 0.7.0

New features

  • Add the "time" class of inputs to test_inputs().
  • Add the group argument to print() to control how the results should be grouped when printing: either by "input" (default) or by "function" (#10).
  • Add support for show = "none" in print() to output only the summary statistics (#13).

Updates

  • Add more inputs in test_inputs(), bringing the total number of inputs from 70 to 85.
  • Use the full terminal size to display the progress report, so that the list of arguments currently tested is shown as much as possible (#11).
  • Fix a crash in the strange case when conditionMessage() produces more than one error message (#12).
Show all changes in 0.7.0Hide the rest of the changes in 0.7.0
  • Return multiple warnings as a concatenated string, instead of returning only the last one (#14).

From NEWS.md in the release

Install

Health

CRAN checks
13OK
Slowest check: 57 s · r-oldrel-windows-x86_64
Status changes
  • OK13 OK2026-08-05
  • NOTE12 OK, 1 NOTE2026-08-01
  • OK14 OK2026-03-10
Advisories

none known

Documentation

In release 0.7.0
READMEYes · 1,799 wordsVignettesNoNEWSYes · 100% structured · mentions 0.7.0Citation fileNoWebsiteYes · pkgdown
Help pages
9includes a package overview page
Examples that run
100%8 run in a plain check
Exported functions with examples
100%
Documented parameters
100%
Return-value docs
100%
Help pages citing references
0%

Downloads

2.7K
CRAN downloads in the past year
Rank #11,771 · ~7/day · ~224/mo
Daily download trend is not available in this view yet.
33730 days
92490 days
2.7K1 year
Compare downloads with other packages →
Also on93 r2u10 autocran

Repository

6Stars
2Forks
2Open issues
0Open PRs
7Releases
283Commits
1Commit identities
fuzz-testingfuzzingpackage-development
License file reads as GPL-3.0 · 283 commits · Last activity 2026-10-19 · 0% stars, 30d · Default branch at 0.7.0.9000, ahead of CRAN 0.7.0 (checked 2026-10-18)
Responsiveness
How these are sampled
PRs merged (all time)
0%
Median days to close, 50 most recently updated closed issues
1
Median days to close, 50 most recently updated closed PRs
0

Stars over time

2025-08-31 · 22026-07-07 · 6
PracticesBeta

6 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/mcol/caught-by-the-fuzz on 2026-10-18.

Continuous integration (2)
GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux and Windows, and on R-devel

Docs source (4)
README.Rmdpkgdown

GitHub Pages site last deployed 2026-07-29 · The repository has a site deploy workflow

pkgdown site last built 2026-07-29

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies
5 external dependencies (excludes base and recommended)

Installing CBTF adds 4 packages (3 with compiled code, 2.5 MB of source tarballs). Heaviest: nanonext 911 KB, rlang 766 KB, cli 629 KB.

Depends (0)
none
Imports (3)
LinkingTo (0)
none
Suggests (2)
Enhances (0)
none
Reverse dependencies
0direct
0indirect

Nothing depends on this yet.

People & History

People (1)
Author, Maintainer since 0.4.0 (2025)
Releases (4)

Pick two releases to compare their code metrics.

  • 0.7.0Latest
    record
    2026-07-03 · current release · diff ↗
  • R
    R 4.6.0 released · 2026-04-24
  • 0.6.0
    record
    2026-02-13 · diff ↗ ·
    removed 1 export
    namify
  • 0.5.0
    record
    2025-08-21 · diff ↗ ·
    added 2 exports
    namify, whitelist
  • 0.4.0
    record
    2025-08-19
  • R
    R 4.5.0 released · 2025-04-11

Package metadata

First published
2025-08-19
Total releases
4 / 1 yrs
License
GPL-3 OSI
Download size
52 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("CBTF")
Colombo, M. (2026). CBTF: Caught by the Fuzz! - A Minimalistic Fuzz-Test Runner (Version 0.7.0) [Computer software]. https://doi.org/10.32614/CRAN.package.CBTF

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

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

APA

Balamuta, J. J. (2026). R Observatory: Metrics for CBTF version 0.7.0 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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