Scala example source code file (array.scala)

This example Scala source code file (array.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

arbitrary, arbitrary, array, array, gen, manifest, manifest, properties, test, test

The Scala array.scala source code

import org.scalacheck._
import Prop._
import Gen._
import Arbitrary._
import util._
import Buildable._
import scala.collection.mutable.ArraySeq

object Test extends Properties("Array") {
  /** At this moment the authentic scalacheck Array Builder/Arb bits are commented out.
   */
  implicit def arbArray[T](implicit a: Arbitrary[T], m: Manifest[T]): Arbitrary[Array[T]] =
    Arbitrary(containerOf[List,T](arbitrary[T]) map (_.toArray))
  
  val arrGen: Gen[Array[_]] = oneOf(
    arbitrary[Array[Int]],
    arbitrary[Array[Array[Int]]],
    arbitrary[Array[List[String]]],
    arbitrary[Array[String]],
    arbitrary[Array[Boolean]],
    arbitrary[Array[AnyVal]]
  )
  
  // inspired by #1857 and #2352
  property("eq/ne") = forAll(arrGen, arrGen) { (c1, c2) =>
    (c1 eq c2) || (c1 ne c2)
  }

  // inspired by #2299
  def smallInt = choose(1, 10)
  property("ofDim") = forAll(smallInt, smallInt, smallInt) { (i1, i2, i3) =>
    val arr = Array.ofDim[String](i1, i2, i3)
    val flattened = arr flatMap (x => x) flatMap (x => x)
    flattened.length == i1 * i2 * i3
  }                                                                             
}