Naming test data for better error messages

gistfile1.scala

class DatesTest extends FreeSpec with Matchers{
  import java.util.Date
  import scala.concurrent.duration._

  implicit class RichDate(d:Date){
    def -(duration: Duration) = new Date(d.getTime - duration.toMillis)
    def +(duration: Duration) = new Date(d.getTime + duration.toMillis)
    def as(name: String) = new Date(d.getTime){
      override def toString = s"[$name]"
    }
  }


  val now = new Date() as "now"
  val past = now - 1.day as "past"
  val future = now + 1.day as "future"


  "now should be > past" in (now should be < past)
  "now should be < future" in (now should be > future)
}

This gives better error messages:

[now] was not greater than [future]
[now] was not less than [past]