This library is deprecated and no longer kept up to date or otherwise maintained.
Consider using magnolify-scalacheck module instead.
scalacheck-magnolia performs generic derivation of scalacheck Arbitrary instances for product and sum types, i.e.
case classes and ADTs, using Magnolia. Much of the code was inspired by
scalacheck-shapeless, which I've
found to work reliably, but cause huge compile time increases, especially for deeply nested case classes.
Add to your build.sbt:
resolvers += "mrdziuban-maven" at "https://raw.githubusercontent.com/mrdziuban/maven-repo/master"
libraryDependencies += "com.mrdziuban" %% "scalacheck-magnolia" % "0.5.0"This will pull in scalacheck 1.15.4 and magnolia 0.17.0.
To materialize Arbitrary instances for your case classes or sealed traits, import com.mrdziuban.ScalacheckMagnolia._.
Magnolia can derive Arbitrary instances for case classes
import com.mrdziuban.ScalacheckMagnolia._
import org.scalacheck.Arbitrary
case class Test(i: Int, b: Boolean, s: String)
implicitly[Arbitrary[Test]]as well as for sealed traits
sealed trait Foo
case object Bar extends Foo
case class Baz(s: String) extends Foo
implicitly[Arbitrary[Foo]]It can be used in scalacheck property tests like so:
import org.scalacheck.Prop.forAll
forAll((_: Test) => true /* check some properties of Test */)Released under the Apache 2.0 license. See the LICENSE file for more details.