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CatsEffectFunFixtures.scala
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CatsEffectFunFixtures.scala
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/*
* Copyright 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.
*/
package munit
import cats.effect.{IO, SyncIO, Resource}
import cats.syntax.flatMap._
import scala.concurrent.Promise
trait CatsEffectFunFixtures extends FunFixtures { self: CatsEffectSuite =>
object ResourceFixture {
def apply[T](
resource: Resource[IO, T]
): SyncIO[FunFixture[T]] =
apply(
resource,
(_, _) => IO.unit,
_ => IO.unit
)
def apply[T](
resource: Resource[IO, T],
setup: (TestOptions, T) => IO[Unit],
teardown: T => IO[Unit]
): SyncIO[FunFixture[T]] = SyncIO {
val promise = Promise[IO[Unit]]()
FunFixture.async(
setup = { testOptions =>
val resourceEffect = resource.allocated
val setupEffect =
resourceEffect
.map { case (t, release) =>
promise.success(release)
t
}
.flatTap(t => setup(testOptions, t))
setupEffect.unsafeToFuture()
},
teardown = { (argument: T) =>
teardown(argument)
.flatMap(_ => IO.fromFuture(IO(promise.future)).flatten)
.unsafeToFuture()
}
)
}
}
implicit class SyncIOFunFixtureOps[T](private val fixture: SyncIO[FunFixture[T]]) {
def test(name: String)(
body: T => Any
)(implicit loc: Location): Unit = {
fixture.unsafeRunSync().test(TestOptions(name))(body)
}
def test(options: TestOptions)(
body: T => Any
)(implicit loc: Location): Unit = {
fixture.unsafeRunSync().test(options)(body)
}
}
}