scalacheck case class random data generator

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遇见更好的自我
遇见更好的自我 2021-01-01 19:34

I\'m trying to generate random data with Scalacheck. I have a hierarchy of case classes with many properties. The only way I\'ve found so far to populate the case classes is

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  •  灰色年华
    2021-01-01 20:25

    I am sure somebody will come up with a solution that abstracts over arity using shapeless. But there are some helper methods to generate Gen[T] instances from functions of varying arity, which can be used with the apply method of the case class companion object

    case class Data(a: String, b: String, c: String)
    
    val dataArb = Arbitrary(Gen.resultOf(Data))
    // equivalent to
    // val f: (String, String, String) => Data = Data.apply
    // val gen: Gen[Data] = Gen.resultOf(f)
    // val arb: Arbitrary[Data] = Arbitrary(gen)
    

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