ZIO learning - using chunks / published by https://github.com/dacr/code-examples-manager #32aa6700-5da8-4ab9-a457-5283dd5026ba/49609b874909f185d8f242960132fb1f9aef7b07

zio-learning-29-chunks-1.sc

// summary : ZIO learning - using chunks
// keywords : scala, scalacli, chunks, zio, ziotest, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 32aa6700-5da8-4ab9-a457-5283dd5026ba
// created-on : 2021-11-11T19:38:15+01:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

//> using scala "3.4.2"
//> using dep "dev.zio::zio:2.0.13"
//> using dep "dev.zio::zio-test:2.0.13"

import zio._
import zio.test._
import zio.test.Assertion._

object Encapsulated extends ZIOSpecDefault {

  val testLogic = suite("chunk tests")(
    test("chunk head") {
      ZIO.attempt(assertTrue(Chunk.single(42).head == 42))
    },
    test("chunk has a size") {
      ZIO.attempt(assertTrue(Chunk(1, 2, 3, 4, 5).size == 5))
    },
    test("chunk is mappable") {
      ZIO.attempt(
        assertTrue(Chunk.fromIterable(1 to 5).map(_ + 1).sum == (2 to 6).sum)
      )
    },
    test("chunks are zippable") {
      ZIO.attempt(
        assertTrue(
          Chunk
            .fromArray("abcd".toArray)
            .zip(Chunk.fromIterable(1 to 2)) == Chunk('a' -> 1, 'b' -> 2)
        )
      )
    },
    test("And chunks are very fast because backed by arrays") {
      ZIO.attempt(assertTrue(Chunk.fill(42424242)(42L).size == 42424242))
    }
  )

  def spec = testLogic
}

Encapsulated.main(Array.empty)