Circe and Scala's Enumeration type

Question

I\'m trying to wrap my head around Circe.

So, here\'s the model I\'ve been given:

object Gender extends Enumeration {
     type Gender = Value
     val M         


        

Answer 1

Have a look at enumeratum if you want to use enumerations with circe. You could then try something like this:

import enumeratum._

sealed trait Gender extends EnumEntry

case object Gender extends CirceEnum[Gender] with Enum[Gender] {

  case object Male extends Gender
  case object Female extends Gender
  case object Unisex extends Gender
  case object Unknown extends Gender

  val values = findValues
}

Gender.values.foreach { gender =>
    assert(gender.asJson == Json.fromString(gender.entryName))
}

This should work with circe's automatic derivation for use with your case classes.