Case Class with abstract parent with parameters

CaseClassWithAbstractParentWithParameters.scala

package classes

abstract class Lunch() {
  def eat(): String = {
    "burp."
  }
  def sugarValue:Double
}

case class Soda(sugarValue:Double = 10.0) extends Lunch

object CaseClassWithAbstractParentWithParameters {

}

TestCaseClassWithAbstractParentWithParameters.scala

package classes

import org.scalatest.{FlatSpec, Matchers}

class TestCaseClassWithAbstractParentWithParameters extends FlatSpec with Matchers {

  "Case class with abstract parent with parameters" should "use default value for parameters" in {
    val boisson = Soda()
    boisson.sugarValue shouldBe 10
  }
  it should "update parameters if defined" in {
    val boisson = Soda(20.0)
    boisson.sugarValue shouldBe 20
  }
}