input mocking for test need

mockInput.scala

object test extends App {
  import scala.collection.JavaConversions.asJavaEnumeration
  import java.io.{ByteArrayInputStream, SequenceInputStream}

  val inputs = Iterator("asdf", "qewr", "wert")
    .map(x => new ByteArrayInputStream((x + "\n").getBytes))
  val in = new SequenceInputStream(asJavaEnumeration(inputs))
  Console.setIn(in)
  val a = readLine()
  val b = readLine()
  val c = readLine()

  println(List(a, b, c))
}

and this was also helpful https://stackoverflow.com/questions/33569920/how-to-test-system-out-println-by-mocking