/
UniqueLaws.scala
35 lines (29 loc) · 1005 Bytes
/
UniqueLaws.scala
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/*
* Copyright 2020-2024 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.
*/
package cats.effect
package laws
import cats.Applicative
import cats.effect.kernel.Unique
import cats.syntax.all._
trait UniqueLaws[F[_]] {
implicit val F: Unique[F]
private implicit def app: Applicative[F] = F.applicative
def uniqueness = (F.unique, F.unique).mapN(_ =!= _)
}
object UniqueLaws {
def apply[F[_]](implicit F0: Unique[F]): UniqueLaws[F] =
new UniqueLaws[F] { val F = F0 }
}