Side by side
Eris vs ScalaCheck
Both stand on property-based testing tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Self-hosted
Eris provides a focused way to generate property-based test inputs and narrow assertion failures in PHP. Its approximate duration limit and exception behavior are important when configuring test runs.
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ScalaCheck provides randomized property checks with several listed integration options and a standalone runner. Its Scala runtime dependency and the listed release date are worth noting when assessing fit.
Visit ScalaCheckThe facts
| Eris | ScalaCheck | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Self-hosted | Linux, Mac, Windows |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | scalacheck.org |
| On property-based testing tools | #10 of 28 | #14 of 28 |
Eris: what it does well
- Generates 100 values by default for each forAll() call.
- Attempts to shrink assertion failures.
- A pseudorandom seed can help reproduce a run.
- Generators include scalars, collections and domain data.
- Can be used outside PHPUnit.
What to know first
- A configured time limit is approximate.
- Generic callback exceptions interrupt the test.
- PHPUnit compatibility is listed for versions 10.x through 13.x.
ScalaCheck: what it does well
- Tests Scala and Java program properties.
- Reports inputs that falsify a property.
- Supports parameterized cases and parallel execution.
- Integrates with sbt, ScalaTest, specs2, and LambdaTest.
- No external dependencies beyond the Scala runtime.
What to know first
- Requires the Scala runtime.
- The listed release is from September 6, 2025.
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