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LawAdapter.scala
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/
LawAdapter.scala
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/*
* Copyright 2019 http4s.org
*
* 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.
*/
package org.http4s.laws.discipline
import cats.{Eq, MonadThrow}
import cats.laws.IsEq
import cats.syntax.all._
import org.scalacheck.Arbitrary
import org.scalacheck.Shrink
import org.scalacheck.effect.PropF
import munit.CatsEffectAssertions._
trait LawAdapter {
def booleanPropF[F[_]: MonadThrow, A](propLabel: String, prop: => Boolean): (String, PropF[F]) =
propLabel -> PropF.boolean(prop)
def isEqPropF[F[_], A: Arbitrary: Shrink, B: Eq](propLabel: String, prop: A => IsEq[F[B]])(
implicit F: MonadThrow[F]): (String, PropF[F]) =
propLabel -> PropF
.forAllF { (a: A) =>
val isEq = prop(a)
(isEq.lhs, isEq.rhs).mapN(_ === _).flatMap(b => F.catchOnly[AssertionError](assert(b)))
}
.map(p => p.copy(labels = p.labels + propLabel))
}
object LawAdapter extends LawAdapter