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ResourceFixture.scala
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ResourceFixture.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
package catseffect
import cats.effect.IO
import cats.effect.Resource
object ResourceFixture {
final class FixtureNotInstantiatedException(name: String)
extends Exception(
s"The fixture `$name` was not instantiated. Override `munitFixtures` and include a reference to this fixture."
)
def testLocal[A](name: String, resource: Resource[IO, A]): IOFixture[A] =
new IOFixture[A](name) {
@volatile var value: Option[(A, IO[Unit])] = None
def apply() = value match {
case Some(v) => v._1
case None => throw new FixtureNotInstantiatedException(name)
}
override def beforeEach(context: BeforeEach) = resource.allocated.flatMap { value =>
IO(this.value = Some(value))
}
override def afterEach(context: AfterEach) = value.fold(IO.unit)(_._2)
}
def suiteLocal[A](name: String, resource: Resource[IO, A]): IOFixture[A] =
new IOFixture[A](name) {
@volatile var value: Option[(A, IO[Unit])] = None
def apply() = value match {
case Some(v) => v._1
case None => throw new FixtureNotInstantiatedException(name)
}
override def beforeAll() = resource.allocated.flatMap { value =>
IO(this.value = Some(value))
}
override def afterAll() = value.fold(IO.unit)(_._2)
}
}
abstract class IOFixture[A](name: String) extends AnyFixture[A](name: String) {
override def beforeAll(): IO[Unit] = IO.unit
override def beforeEach(context: BeforeEach): IO[Unit] = IO.unit
override def afterEach(context: AfterEach): IO[Unit] = IO.unit
override def afterAll(): IO[Unit] = IO.unit
}