Scala FutureExceptions Test Trait - getExceptionFromFuture

future exceptions.scala

import org.scalatest.Assertions
import org.scalatest.concurrent.ScalaFutures

import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future

trait FutureExceptions {
  self: Assertions with ScalaFutures =>

  def getExceptionFromFuture(future: Future[Any]): Throwable = {
    future.map(_ => fail()).recover {
      case e => e
    }.futureValue
  }

}