едем из Харькова в Париж через Сан Франциско

TrainSpec.scala

package com.typesafe.training.scalatrain
import org.specs2.mutable._

class TrainSpec extends Specification {

  val kharkovStation = Station("Харьков")
  val sfStation = Station("Сан Франциско")
  val parisStation = Station("Париж")

  val t1 = Time(11, 11)
  val t2 = Time(12, 12)
  val t3 = Time(13, 13)

  "Train" should {

    "throw IllegalArgumentException schedules that have less than 2 stations" in {
      Train(1, "Hogwarts", Vector()) must throwA[IllegalArgumentException]
      Train(2, "Hogwarts", Vector(t1 -> kharkovStation)) must throwA[IllegalArgumentException]
    }

    "be created properly with 2 or more schedule entries" in {
      Train(3, "Hogwarts", Vector(t1 -> kharkovStation, t2 -> sfStation)).schedule.size ==== 2
      Train(4, "Hogwarts", Vector(t1 -> kharkovStation, t2 -> sfStation, t3 -> parisStation)).schedule.size ==== 3
    }

    "be created properly with stations initialized correctly" in {
      Train(3, "Hogwarts", Vector(t1 -> kharkovStation, t2 -> sfStation)).stations ==== List(Station("Харьков"), Station("Сан Франциско"))
      Train(4, "Hogwarts", Vector(t1 -> kharkovStation, t2 -> sfStation, t3 -> parisStation)).stations ==== List(Station("Харьков"), Station("Сан Франциско"), Station("Париж"))
    }
  }
}

I like this syntax a bit more:
train.stations must contain(st1, st2).inOrder