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simple properties based scalacheck usage example / published by https://github.com/dacr/code-examples-manager #221c6449-dad8-4d70-b690-1e689ecc01f5/f040e1aa575ea747cfcb4dbbeb680a15f8adfe4b
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| // summary : simple properties based scalacheck usage example | |
| // keywords : scala, scalacheck, properties-based-testing, @testable | |
| // publish : gist | |
| // authors : David Crosson | |
| // license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2) | |
| // id : 221c6449-dad8-4d70-b690-1e689ecc01f5 | |
| // created-on : 2021-12-17T16:45:11+01:00 | |
| // managed-by : https://github.com/dacr/code-examples-manager | |
| // run-with : scala-cli $file | |
| // --------------------- | |
| //> using scala "3.4.2" | |
| //> using dep "org.scalacheck::scalacheck:1.17.0" | |
| // --------------------- | |
| import org.scalacheck.Prop | |
| import org.scalacheck.Gen | |
| // ----------------------------- | |
| def concatList[A](left: List[A], right: List[A]): List[A] = left ::: right | |
| val propConcatLists = Prop.forAll { (l1: List[Int], l2: List[Int]) => | |
| l1.size + l2.size == concatList(l1, l2).size | |
| } | |
| propConcatLists.check() | |
| // ----------------------------- | |
| val propSqrt = Prop.forAll { (n: Int) => scala.math.sqrt(n*n) == n } | |
| propSqrt.check() | |
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