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

This example Akka source code file (DurationSpec.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, akkaspec, concurrent, duration, durationspec, test, testing, testkit, time, util

The DurationSpec.scala Akka example source code

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

import language.postfixOps

import scala.concurrent.duration._

import akka.testkit.AkkaSpec

class DurationSpec extends AkkaSpec {

  "Duration" must {

    "form a one-dimensional vector field" in {
      val zero = 0 seconds
      val one = 1 second
      val two = one + one
      val three = 3 * one
      (0 * one) should be(zero)
      (2 * one) should be(two)
      (three - two) should be(one)
      (three / 3) should be(one)
      (two / one) should be(2)
      (one + zero) should be(one)
      (one / 1000000) should be(1.micro)
    }

    "respect correct treatment of infinities" in {
      val one = 1.second
      val inf = Duration.Inf
      val minf = Duration.MinusInf
      val undefined = Duration.Undefined
      (-inf) should be(minf)
      (minf + inf) should be(undefined)
      (inf - inf) should be(undefined)
      (inf + minf) should be(undefined)
      (minf - minf) should be(undefined)
      (inf + inf) should be(inf)
      (inf - minf) should be(inf)
      (minf - inf) should be(minf)
      (minf + minf) should be(minf)
      assert(inf == inf)
      assert(minf == minf)
      inf.compareTo(inf) should be(0)
      inf.compareTo(one) should be(1)
      minf.compareTo(minf) should be(0)
      minf.compareTo(one) should be(-1)
      assert(inf != minf)
      assert(minf != inf)
      assert(one != inf)
      assert(minf != one)
    }

    /*"check its range" in {
      for (unit ← Seq(DAYS, HOURS, MINUTES, SECONDS, MILLISECONDS, MICROSECONDS, NANOSECONDS)) {
        val x = unit.convert(Long.MaxValue, NANOSECONDS)
        val dur = Duration(x, unit)
        val mdur = Duration(-x, unit)
        -mdur should be(dur)
        intercept[IllegalArgumentException] { Duration(x + 10000000d, unit) }
        intercept[IllegalArgumentException] { Duration(-x - 10000000d, unit) }
        if (unit != NANOSECONDS) {
          intercept[IllegalArgumentException] { Duration(x + 1, unit) }
          intercept[IllegalArgumentException] { Duration(-x - 1, unit) }
        }
        intercept[IllegalArgumentException] { dur + 1.day }
        intercept[IllegalArgumentException] { mdur - 1.day }
        intercept[IllegalArgumentException] { dur * 1.1 }
        intercept[IllegalArgumentException] { mdur * 1.1 }
        intercept[IllegalArgumentException] { dur * 2.1 }
        intercept[IllegalArgumentException] { mdur * 2.1 }
        intercept[IllegalArgumentException] { dur / 0.9 }
        intercept[IllegalArgumentException] { mdur / 0.9 }
        intercept[IllegalArgumentException] { dur / 0.4 }
        intercept[IllegalArgumentException] { mdur / 0.4 }
        Duration(x + unit.toString.toLowerCase)
        Duration("-" + x + unit.toString.toLowerCase)
        intercept[IllegalArgumentException] { Duration("%.0f".format(x + 10000000d) + unit.toString.toLowerCase) }
        intercept[IllegalArgumentException] { Duration("-%.0f".format(x + 10000000d) + unit.toString.toLowerCase) }
      }
    }*/

    "support fromNow" in {
      val dead = 2.seconds.fromNow
      val dead2 = 2 seconds fromNow
      // view bounds vs. very local type inference vs. operator precedence: sigh
      dead.timeLeft should be > (1 second: Duration)
      dead2.timeLeft should be > (1 second: Duration)
      Thread.sleep(1.second.toMillis)
      dead.timeLeft should be < (1 second: Duration)
      dead2.timeLeft should be < (1 second: Duration)
    }

  }

}