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InvariantSemigroupalTests.scala
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InvariantSemigroupalTests.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 cats.laws.discipline.SemigroupalTests.Isomorphisms
import org.scalacheck.Prop.forAll
import org.scalacheck.{Arbitrary, Cogen}
trait InvariantSemigroupalTests[F[_]] extends InvariantTests[F] with SemigroupalTests[F] {
def laws: InvariantSemigroupalLaws[F]
def invariantSemigroupal[A: Arbitrary, B: Arbitrary, C: Arbitrary](implicit
arbFA: Arbitrary[F[A]],
arbFB: Arbitrary[F[B]],
arbFC: Arbitrary[F[C]],
CogenA: Cogen[A],
CogenB: Cogen[B],
CogenC: Cogen[C],
EqFA: Eq[F[A]],
EqFB: Eq[F[B]],
EqFC: Eq[F[C]],
EqFABC: Eq[F[(A, (B, C))]],
EqFABC2: Eq[F[(A, B, C)]],
iso: Isomorphisms[F]
): RuleSet =
new RuleSet {
val name = "invariantSemigroupal"
val parents = Seq(invariant[A, B, C], semigroupal[A, B, C])
val bases = Nil
val props = Seq(
"invariant semigroupal associativity" -> forAll((fa: F[A], fb: F[B], fc: F[C]) =>
laws.invariantSemigroupalAssociativity(fa, fb, fc)
)
)
}
}
object InvariantSemigroupalTests {
def apply[F[_]: InvariantSemigroupal]: InvariantSemigroupalTests[F] =
new InvariantSemigroupalTests[F] { def laws: InvariantSemigroupalLaws[F] = InvariantSemigroupalLaws[F] }
}