cats.effect.kernel.testkit.PureConcGenerators.scala Maven / Gradle / Ivy
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/*
* Copyright 2020-2021 Typelevel
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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package cats.effect.kernel
package testkit
import cats.effect.kernel.testkit.pure._
import org.scalacheck.{Arbitrary, Cogen}
object PureConcGenerators {
import OutcomeGenerators._
implicit def cogenPureConc[E: Cogen, A: Cogen]: Cogen[PureConc[E, A]] =
Cogen[Outcome[Option, E, A]].contramap(run(_))
def generators[E: Arbitrary: Cogen] =
new GenSpawnGenerators[PureConc[E, *], E] {
val arbitraryE: Arbitrary[E] = implicitly[Arbitrary[E]]
val cogenE: Cogen[E] = Cogen[E]
val F: GenSpawn[PureConc[E, *], E] = allocateForPureConc[E]
def cogenCase[A: Cogen]: Cogen[Outcome[PureConc[E, *], E, A]] =
OutcomeGenerators.cogenOutcome[PureConc[E, *], E, A]
override def recursiveGen[B: Arbitrary: Cogen](deeper: GenK[PureConc[E, *]]) =
super
.recursiveGen[B](deeper)
.filterNot(
_._1 == "racePair"
) // remove the racePair generator since it reifies nondeterminism, which cannot be law-tested
}
implicit def arbitraryPureConc[E: Arbitrary: Cogen, A: Arbitrary: Cogen]
: Arbitrary[PureConc[E, A]] =
Arbitrary(generators[E].generators[A])
}