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CoflatMapTests.scala
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CoflatMapTests.scala
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/*
* Copyright (c) 2015 Typelevel
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package cats
package laws
package discipline
import org.scalacheck.{Arbitrary, Cogen, Prop}
import Prop._
import org.typelevel.discipline.Laws
trait CoflatMapTests[F[_]] extends Laws with FunctorTests[F] {
def laws: CoflatMapLaws[F]
def coflatMap[A: Arbitrary, B: Arbitrary, C: Arbitrary](implicit
ArbFA: Arbitrary[F[A]],
CogenA: Cogen[A],
CogenB: Cogen[B],
CogenC: Cogen[C],
CogenFA: Cogen[F[A]],
CogenFB: Cogen[F[B]],
EqFA: Eq[F[A]],
EqFC: Eq[F[C]],
EqFFA: Eq[F[F[A]]],
EqFB: Eq[F[B]],
EqFFFA: Eq[F[F[F[A]]]]
): RuleSet =
new DefaultRuleSet(
name = "coflatMap",
parent = Some(functor[A, B, C]),
"coflatMap associativity" -> forAll(laws.coflatMapAssociativity[A, B, C] _),
"coflatMap identity" -> forAll(laws.coflatMapIdentity[A, B] _),
"coflatten coherence" -> forAll(laws.coflattenCoherence[A, B] _),
"coflatten throughMap" -> forAll(laws.coflattenThroughMap[A] _)
)
}
object CoflatMapTests {
def apply[F[_]: CoflatMap]: CoflatMapTests[F] =
new CoflatMapTests[F] { def laws: CoflatMapLaws[F] = CoflatMapLaws[F] }
}