Packages

•  package root

  Definition Classes

  root

•  package zio

  Definition Classes

  root

•  package test

  _ZIO Test_ is a featherweight testing library for effectful programs.

  _ZIO Test_ is a featherweight testing library for effectful programs.

  The library imagines every spec as an ordinary immutable value, providing tremendous potential for composition. Thanks to tight integration with ZIO, specs can use resources (including those requiring disposal), have well- defined linear and parallel semantics, and can benefit from a host of ZIO combinators.

  import zio.test._
  import zio.Clock.nanoTime
  
  object MyTest extends ZIOSpecDefault {
    def spec = suite("clock")(
      test("time is non-zero") {
        for {
          time <- Live.live(nanoTime)
        } yield assertTrue(time >= 0L)
      }
    )
  }

  Definition Classes

  zio

•  package scalacheck

  This package provides helpers to integrate *some* ScalaCheck primitives to their ZIO equivalents.

  This package provides helpers to integrate *some* ScalaCheck primitives to their ZIO equivalents. Currently available helpers:

  • Converting ScalaCheck Generators to ZIO Generators
  • Asserting a ScalaCheck Prop with ZIO
  • Asserting a ScalaCheck Properties with ZIO

  **Generators**

  This functionality converts legacy ScalaCheck generators to ZIO Test generators to support upgrading to ZIO Test without having to reimplement existing generators. To use it import this module and then call toGenZIO on any existing ScalaCheck generator. For example:

  import org.scalacheck.Arbitrary
  
  import zio._
  import zio.test._
  import zio.test.scalacheck._
  
  val anyInt: Gen[Any, Int] =
    Arbitrary.arbitrary[Int].toGenZIO

  **Asserting ScalaCheck Prop and Properties**

  This functionality generates ZIO Assertions from either ScalaCheck Prop or Properties. This helps with integrating other libraries that provide ScalaCheck properties as helpers, i.e. cats-laws.

  Prop example:

  import org.scalacheck.Prop
  import org.scalacheck.Test.{ Parameters => ScalaCheckParameters }
  
  import zio._
  import zio.test._
  import zio.test.scalacheck._
  
  val prop: Prop = Prop.forAll { (n: Int, m: Int) =>
    n + m == m + n
  }
  val resultDefault: TestResult = prop.assertZIO()
  
  val resultWithCustomizations: TestResult =
    prop.assertZIO("My Prop Name", ScalaCheckParameters.default.withMaxSize(10))

  Properties example:

  import org.scalacheck.{ Prop, Properties }
  import org.scalacheck.Test.{ Parameters => ScalaCheckParameters }
  
  import zio._
  import zio.test._
  import zio.test.scalacheck._
  
  object MyProperties extends Properties("MyProperties") {
    property("myProp") = Prop.forAll { (n: Int, m: Int) =>
      n + m == m + n
    }
  }
  
  * val resultDefault: TestResult = MyProperties.assertZIO()
  
  // Beware that we can't provide a custom name here, it will be
  // taken from the `Properties` name parameter
  val resultWithCustomizations: TestResult =
    MyProperties.assertZIO(ScalaCheckParameters.default.withMaxSize(10))

  Definition Classes

  test

• ScalaCheckGenSyntax
• ScalaCheckPropSyntax
• ScalaCheckPropertiesSyntax

zio.test.scalacheck

ScalaCheckPropertiesSyntax