CsCheck vs Eris
CsCheck
github.comEris
github.comSide by side
| Figure | CsCheck | Eris |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Property-Based Testing Tools | 8.0 (#6) | 7.6 (#12) |
| Generators | Its composable Gen classes support automatic shrinking without Arb classes. | Its documented generators cover scalar values, collections, composite values, and domain-based values such as names and dates. |
| Installation | NuGet lists CsCheck 4.9.1 and documents installation with the .NET CLI package command and PackageReference. | The README gives Composer as the installation method and shows the command composer require --dev giorgiosironi/eris. |
| Reproducibility | Shrunk cases have a seed value that can be used to reproduce a failure. | When Eris is used outside PHPUnit, the documentation says reproducibility can be obtained by setting the ERIS_SEED environment variable. |
Plans
In their own words
CsCheck
CsCheck is a free C# random testing library inspired by QuickCheck, intended for self-hosted use. Its composable Gen classes shrink generated cases automatically without Arb classes, and a shrunk case includes a seed that can reproduce a failure. The library supports random, model-based, metamorphic, performance, specification, regression, parallel and equality testing. Parallel tests compare outcomes with possible linearizations and support shrinking. Specification checks can enumerate reachable state spaces exhaustively or sample them, and can test whether declared faults are caught. Its Faster function statistically compares methods to assess whether one is faster and can run as a normal test across platforms. Example tests use TUnit, though the project says CsCheck can be used with any testing framework. The project page reports more than 1,000 F# tests using CsCheck in MKL.NET. NuGet lists version 4.9.1 and installation instructions for the .NET CLI and PackageReference. The project notes that generic recursion limits AOT compatibility; its Dbg module is temporary and may change between minor versions.