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Add EitherT convenience overloads in Entity
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192 changes: 192 additions & 0 deletions
192
core/src/test/scala/endless/core/typeclass/entity/EntitySuite.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,192 @@ | ||
| package endless.core.typeclass.entity | ||
| import cats.data.EitherT | ||
| import cats.syntax.either._ | ||
| import cats.{Id, Monad} | ||
| import org.scalacheck.Prop.forAll | ||
|
|
||
| class EntitySuite extends munit.ScalaCheckSuite { | ||
| property("ifKnown with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity.ifKnown(identity)(Error.EntityNotFound).getOrElse(fail("empty state")), | ||
| state | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifKnown with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity.ifKnown(identity)(Error.EntityNotFound).left.getOrElse(fail("non-empty state")), | ||
| Error.EntityNotFound | ||
| ) | ||
| } | ||
|
|
||
| property("ifUnknown with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity.ifUnknown("foo")(_ => Error.EntityAlreadyExists).left.getOrElse(fail("empty state")), | ||
| Error.EntityAlreadyExists | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifUnknown with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity.ifUnknown("foo")(_ => Error.EntityAlreadyExists).getOrElse(fail("non-empty state")), | ||
| "foo" | ||
| ) | ||
| } | ||
|
|
||
| property("ifKnownF with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity.ifKnownF(identity)(Error.EntityNotFound).getOrElse(fail("empty state")), | ||
| state | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifKnownF with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity.ifKnownF(identity)(Error.EntityNotFound).left.getOrElse(fail("non-empty state")), | ||
| Error.EntityNotFound | ||
| ) | ||
| } | ||
|
|
||
| property("ifUnknownF with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity | ||
| .ifUnknownF("foo")(_ => Error.EntityAlreadyExists) | ||
| .left | ||
| .getOrElse(fail("empty state")), | ||
| Error.EntityAlreadyExists | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifUnknownF with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity.ifUnknownF("foo")(_ => Error.EntityAlreadyExists).getOrElse(fail("non-empty state")), | ||
| "foo" | ||
| ) | ||
| } | ||
|
|
||
| property("ifKnownFE with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity | ||
| .ifKnownFE(_.asRight[Error])(Error.EntityNotFound) | ||
| .getOrElse(fail("empty state")), | ||
| state | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifKnownFE with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity | ||
| .ifKnownFE(_.asRight[Error])(Error.EntityNotFound) | ||
| .left | ||
| .getOrElse(fail("non-empty state")), | ||
| Error.EntityNotFound | ||
| ) | ||
| } | ||
|
|
||
| property("ifUnknownFE with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity | ||
| .ifUnknownFE("foo".asRight[Error])(_ => Error.EntityAlreadyExists) | ||
| .left | ||
| .getOrElse(fail("empty state")), | ||
| Error.EntityAlreadyExists | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifUnknownFE with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity | ||
| .ifUnknownFE("foo".asRight[Error])(_ => Error.EntityAlreadyExists) | ||
| .getOrElse(fail("non-empty state")), | ||
| "foo" | ||
| ) | ||
| } | ||
|
|
||
| property("ifKnownT with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity | ||
| .ifKnownT(EitherT.pure[Id, Error](_))(Error.EntityNotFound) | ||
| .getOrElse(fail("empty state")), | ||
| state | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifKnownT with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity | ||
| .ifKnownT(EitherT.pure[Id, Error](_))(Error.EntityNotFound) | ||
| .left | ||
| .getOrElse(fail("non-empty state")), | ||
| Error.EntityNotFound | ||
| ) | ||
| } | ||
|
|
||
| property("ifUnknownT with state") { | ||
| forAll { (state: State) => | ||
| val entity = new TestEntity(Some(state)) | ||
| assertEquals( | ||
| entity | ||
| .ifUnknownT(EitherT.pure[Id, Error]("foo"))(_ => Error.EntityAlreadyExists) | ||
| .left | ||
| .getOrElse(fail("empty state")), | ||
| Error.EntityAlreadyExists | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| property("ifUnknownT with no state") { | ||
| val entity = new TestEntity(None) | ||
| assertEquals( | ||
| entity | ||
| .ifUnknownT(EitherT.pure[Id, Error]("foo"))(_ => Error.EntityAlreadyExists) | ||
| .getOrElse(fail("non-empty state")), | ||
| "foo" | ||
| ) | ||
| } | ||
|
|
||
| type State = Int | ||
| type Event = String | ||
| sealed trait Error | ||
| object Error { | ||
| object EntityNotFound extends Error | ||
| object EntityAlreadyExists extends Error | ||
| case class Odd(state: State) extends Error | ||
| } | ||
|
|
||
| class TestEntity(state: Option[State]) extends Entity[Id, State, Event] { | ||
| private val queue = new scala.collection.mutable.Queue[Event] | ||
| def pure[A](x: A): Id[A] = x | ||
| def read: Id[Option[State]] = state | ||
| def write(event: Event, other: Event*): Id[Unit] = queue += event ++= other | ||
| def flatMap[A, B](fa: Id[A])(f: A => Id[B]): Id[B] = implicitly[Monad[Id]].flatMap(fa)(f) | ||
| def tailRecM[A, B](a: A)(f: A => Id[Either[A, B]]): Id[B] = implicitly[Monad[Id]].tailRecM(a)(f) | ||
| } | ||
| } |