Scala example source code file (PLensTest.scala)

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

Learn more about this Scala project at its project page.

Java - Scala tags/keywords

category, choice, plenstest, speclite, split

The PLensTest.scala Scala example source code

package scalaz

import std.AllInstances._

object PLensTest extends SpecLite {
  import PLens._

  "list head" in {
    listHeadPLens[Int].get(List(1, 2)) must_===(Some(1))
    listHeadPLens[Int].get(Nil) must_===(None)
  }

  object instances {
    def category = Category[PLens]
    def choice = Choice[PLens]
    def split = Split[PLens]
  }

}