hedgehog

0.2

Property-Based Testing

5packages depend

16.1Kdownloads / year

86.8%test coverage

13/13checks pass

Overview

About

Maintained by Huw CampbellFirst published 2018-08-222 releasesCRAN page ↗GitHub ↗

Hedgehog will eat all your bugs. 'Hedgehog' is a property-based testing package in the spirit of 'QuickCheck'. With 'Hedgehog', one can test properties of their programs against randomly generated input, providing far superior test coverage compared to unit testing. One of the key benefits of 'Hedgehog' is integrated shrinking of counterexamples, which allows one to quickly find the cause of bugs, given salient examples when incorrect behaviour occurs.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("hedgehog", 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("hedgehogqa/r-hedgehog")

Development version from hedgehogqa/r-hedgehog. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-hedgehog

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# 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-hedgehog

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-hedgehog

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

Health

CRAN checks

13OK

Slowest check: 1.8 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.21

86.8%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-06-07
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 16%
References docs: 3%

Downloads

16.1K

CRAN downloads in the past year

Rank #3,686 · ~44/day · ~1.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.3K30 days

2.9K90 days

16.1K1 year

Compare downloads with other packages →

Also on6.4K r2u32 autocran

Repository

GitHub ↗ hedgehogqa/r-hedgehog

62Stars

5Forks

3Open issues

1Open PRs

0Releases

67Commits

4Contributors

67 commits · Last activity 2025-11-03

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/hedgehogqa/r-hedgehog on 2026-07-19.

Continuous integration (1)

Travis CI

Reproducibility and dev environment (1)

Nix

CRAN release process (1)

cran-comments.md

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

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (1)

testthat

Imports (1)

rlang

LinkingTo (0)

none

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

0indirect

quickcheck autodb binpackr heumilkr simstudy

Code & Tests

Code Composition

R 2,007 (59%)Rd 924 (27%)Vignettes 492 (14%)

Code characteristics

Object systems

S34

Cyclomatic complexity: 1.0 median / 6 max
Test cases: 24 / 0.21 per code line

Test coverage

Line coverage

87%

Expression

82.2%

Tests / Examples

86.8% / 56% ex

Functions

75 35 exported

Complexity

1.6 avg / 6 max

Call network

75 nodes / 117 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

75 functions

Function	Cyclo	Coverage
gen.bind exp	1	0%
gen.choice exp	1	0%
gen.date exp	1	0%
gen.example exp	1	0%
gen.no.shrink exp	1	0%
gen.recursive exp	2	0%

People & History

People (1)

Maintainer (1)

Huw Campbell

Author, Maintainer

Authors (1)

Huw Campbell

Author, Maintainer

Package Timeline

2 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.2Latest
2025-11-03 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.1
2018-08-22
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2018-08-22
Total releases: 2 / 8 yrs
License: MIT + file LICENSE OSI
Download size: 139 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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