package com.es.scala.chapter06
import org.specs2.mutable.Specification
class SetTest extends Specification {
"com.es.scala.chapter06.IntSet" should {
"verify that no element belongs to EmptySet" in {
new EmptySet().contains(1) must beFalse
}
"verify that correct elements belong to NonEmptySet" in {
val set = new EmptySet
val set1 = set.incl(3)
set1.contains(1) must beFalse
set1.contains(3) must beTrue
}
}
}