PropCheck vs test.check
PropCheck
github.comtest.check
github.comSide by side
| Figure | PropCheck | test.check |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Property-Based Testing Tools | 8.0 (#7) | 6.9 (#24) |
| Generators | It includes generators for common Ruby data types and a DSL for defining custom generators. | It includes built-in generators and combinators for creating generators, including compound and recursive generators. |
| License | The project is released under the MIT License. | The project is distributed under the Eclipse Public License, the same license as Clojure. |
| Purpose | PropCheck is a Ruby library for property-based testing that checks assertions against generated inputs. | test.check is a Clojure property-based testing tool inspired by QuickCheck. |
Plans
In their own words
PropCheck
PropCheck is a Ruby library for property-based testing: it generates inputs and checks whether assertions hold across them. When a generated example fails, it tries to simplify that case into a smaller counterexample. Built-in generators cover integers, floats, strings, symbols, arrays, hashes, sets, dates, times and datetimes. A generator DSL lets developers define their own, while the API also supports mapping and binding values, alternatives and weighted frequency choices.
Before, after and around hooks provide setup and cleanup around generated examples. The README gives usage examples for RSpec, MiniTest, test-unit and vanilla Ruby, and says the library has no external dependencies. PropCheck requires Ruby 2.5.1 or later and is released under the MIT License. It is available as a free Community library. Installation can be done through a Gemfile or with `gem install prop_check`. For generated examples involving a database, the README recommends cleaning database state around each example and mentions DatabaseCleaner. Stateful property testing is described as a possible future separate add-on.