Akka/Scala example source code file (PrettyDurationSpec.scala)

This example Akka source code file (PrettyDurationSpec.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

akka, flatspec, float, int, matchers, metrics, nil, prettyduration, prettydurationspec, seq, string, test, testing, testkit

The PrettyDurationSpec.scala Akka example source code

/**
 * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
 */
package akka.testkit.metrics.reporter

import org.scalatest.{ Matchers, FlatSpec }
import java.util.Locale

class PrettyDurationSpec extends FlatSpec with Matchers {

  behavior of "PrettyDuration"

  import concurrent.duration._
  import PrettyDuration._

  val cases: Seq[(Duration, (Float, Int, String))] =
    9.nanos -> ((9.000f, 3, "ns")) ::
      95.nanos -> ((95.00f, 2, "ns")) ::
      999.nanos -> ((999.0f, 1, "ns")) ::
      1000.nanos -> ((1.000f, 3, "μs")) ::
      9500.nanos -> ((9.500f, 3, "μs")) ::
      9500.micros -> ((9.500f, 3, "ms")) ::
      9500.millis -> ((9.500f, 3, "s")) ::
      95.seconds -> ((1.583f, 3, "min")) ::
      95.minutes -> ((1.583f, 3, "h")) ::
      95.hours -> ((3.958f, 3, "d")) ::
      Nil

  cases foreach {
    case (d, (expectedValue, precision, unit)) ⇒
      val prettyString = s"%.${precision}f $unit" formatLocal (Locale.getDefault, expectedValue)
      it should s"print $d seconds as $prettyString" in {
        d.pretty should equal(prettyString)
      }
  }

  it should "work with infinity" in {
    Duration.Inf.pretty should include("infinity")
  }

  it should "work with -infinity" in {
    Duration.MinusInf.pretty should include("minus infinity")
  }
}