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smithy4s.tests.PizzaClientSpec.scala Maven / Gradle / Ivy
/*
* Copyright 2021-2022 Disney Streaming
*
* Licensed under the Tomorrow Open Source Technology License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://disneystreaming.github.io/TOST-1.0.txt
*
* 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 smithy4s.tests
import cats.data.Chain
import cats.effect._
import cats.effect.std.UUIDGen
import cats.Show
import cats.syntax.all._
import io.circe.Json
import org.http4s._
import org.http4s.circe._
import org.http4s.dsl.io._
import org.http4s.HttpApp
import org.typelevel.ci.CIString
import smithy4s.example._
import smithy4s.Timestamp
import weaver._
abstract class PizzaClientSpec extends IOSuite {
val pizzaItem = Json.obj(
"pizza" -> Json.obj(
"name" -> Json.fromString("margharita"),
"base" -> Json.fromString("T"),
"toppings" -> Json.arr(
Json.fromString("Mushroom"),
Json.fromString("Tomato")
)
)
)
clientTest("Errors make it through") { (client, backend, log) =>
for {
ts <- IO(Timestamp(Timestamp.nowUTC().epochSecond, 0))
uuid <- UUIDGen.randomUUID[IO]
response <- Created(
Json.fromString(uuid.toString),
Header.Raw(
CIString("X-ADDED-AT"),
ts.epochSecond.toString()
)
)
_ <- backend.prepResponse("foo", response)
menuItem = MenuItem(
Food.PizzaCase(
Pizza("margharita", PizzaBase.TOMATO, List(Ingredient.Mushroom))
),
price = 9.5f
)
result <- client.addMenuItem("foo", menuItem)
request <- backend.lastRequest("foo")
requestBody <- request.asJson
} yield {
val pizzaItem = Json.obj(
"pizza" -> Json.obj(
"name" -> Json.fromString("margharita"),
"base" -> Json.fromString("T"),
"toppings" -> Json.arr(
Json.fromString("Mushroom")
)
)
)
val expectedBody = Json.obj(
"food" -> pizzaItem,
"price" -> Json.fromFloatOrNull(9.5f)
)
val expectedResult = AddMenuItemResult(uuid.toString(), ts)
expect(requestBody == expectedBody) &&
expect(request.uri.path.toString == "/restaurant/foo/menu/item") &&
expect(result == expectedResult)
}
}
clientTestForError(
"Receives errors as exceptions",
Response(status = Status.NotFound)
.withHeaders(Header.Raw(CIString("X-Error-Type"), "NotFoundError"))
.withEntity(
Json.obj("name" -> Json.fromString("bar"))
),
NotFoundError("bar")
)
clientTestForError(
"Handle error with a unique status code mapping (418)",
Response(status = Status.ImATeapot)
.withEntity(
Json.obj("message" -> Json.fromString("generic error message for 418"))
),
GenericClientError("generic error message for 418")
)
clientTestForError(
"Handle error w/o a discriminator header nor a unique status code",
Response(status = Status.ProxyAuthenticationRequired)
.withEntity(
Json.obj("message" -> Json.fromString("generic client error message"))
),
smithy4s.http.UnknownErrorResponse(
407,
Map("Content-Length" -> "42", "Content-Type" -> "application/json"),
"""{"message":"generic client error message"}"""
)
)
clientTest("Headers are case insensitive") { (client, backend, log) =>
for {
res <- client.headerEndpoint(
uppercaseHeader = "upper".some,
capitalizedHeader = "capitalized".some,
lowercaseHeader = "lowercase".some,
mixedHeader = "mixed".some
)
} yield {
expect(res.uppercaseHeader == "upper".some) &&
expect(res.capitalizedHeader == "capitalized".some) &&
expect(res.lowercaseHeader == "lowercase".some) &&
expect(res.mixedHeader == "mixed".some)
}
}
clientTest("code decoded in structure") { (client, backend, log) =>
val code = 201
for {
response <- Created()
_ <- backend.prepResponse(s"customCode$code", response)
res <- client.customCode(code)
} yield {
expect(res.code == Some(201))
}
}
clientTest("Round trip") { (client, backend, log) =>
for {
res <- client.roundTrip(
label = "l",
query = "q".some,
header = "h".some,
body = "b".some
)
} yield {
val expected = RoundTripData(
"l",
header = Some("h"),
query = Some("q"),
body = Some("b")
)
expect.same(res, expected)
}
}
def clientTestForError[E](
name: String,
response: Response[IO],
expected: E
)(implicit
loc: SourceLocation,
ct: scala.reflect.ClassTag[E],
show: Show[E] = Show.fromToString[E]
) = {
clientTest(name) { (client, backend, log) =>
for {
_ <- backend.prepResponse(
name,
response
)
maybeResult <- client.getMenu(name).attempt
} yield maybeResult match {
case Right(_) => failure("expected failure")
case Left(error: E) =>
expect.same[E](error, expected)
case Left(error) =>
failure(s"Error of unexpected type: $error")
}
}
}
def clientTest(name: TestName)(
f: (
PizzaAdminService[IO],
Backend,
Log[IO]
) => IO[Expectations]
): Unit =
test(name) { (res, log) => f(res._1, res._2, log) }
// If right, TCP will be exercised.
def makeClient: Either[
HttpApp[IO] => Resource[IO, PizzaAdminService[IO]],
Int => Resource[IO, PizzaAdminService[IO]]
]
type Res = (PizzaAdminService[IO], Backend)
def sharedResource: Resource[IO, (PizzaAdminService[IO], Backend)] =
for {
ref <- Resource.eval(Compat.ref(State.empty))
app = router(ref)
client <- makeClient match {
case Left(fromHttpApp) => fromHttpApp(app)
case Right(fromPort) =>
for {
port <- retryResource(server(app))
client <- fromPort(port)
} yield client
}
} yield (client, Backend(ref))
case class Backend(ref: Compat.Ref[IO, State]) {
def prepResponse(key: String, response: Response[IO]): IO[Unit] =
ref.update(_.prepResponse(key, response))
def lastRequest(key: String): IO[Request[IO]] =
ref.get.flatMap(_.lastRequest(key))
}
case class State(
requests: Map[String, Chain[Request[IO]]],
nextResponses: Map[String, Response[IO]]
) {
def lastRequest(key: String): IO[Request[IO]] = requests
.get(key)
.flatMap(_.lastOption)
.liftTo[IO](new Throwable(s"Found no request matching $key"))
def saveRequest(key: String, request: Request[IO]) = {
val reqForKey = requests.getOrElse(key, Chain.empty)
val updated = reqForKey.append(request)
this.copy(requests = requests + (key -> updated))
}
def prepResponse(key: String, response: Response[IO]) =
this.copy(nextResponses = nextResponses + (key -> response))
def getResponse(key: String): IO[Response[IO]] = nextResponses
.get(key)
.liftTo[IO](new Throwable(s"Found no response matching $key"))
}
object State {
val empty = State(Map.empty, Map.empty)
}
def router(ref: Compat.Ref[IO, State]) = {
def storeAndReturn(key: String, request: Request[IO]): IO[Response[IO]] =
// Collecting the whole body eagerly to make sure we don't consume it after closing the connection
request.body.compile.toVector.flatMap { body =>
ref
.updateAndGet(
_.saveRequest(key, request.withBodyStream(fs2.Stream.emits(body)))
)
.flatMap(_.getResponse(key))
}
object Q extends OptionalQueryParamDecoderMatcher[String]("query")
HttpRoutes
.of[IO] {
case request @ (POST -> Root / "restaurant" / key / "menu" / "item") =>
storeAndReturn(key, request)
case request @ (GET -> Root / "restaurant" / key / "menu") =>
storeAndReturn(key, request)
case request @ POST -> Root / "headers" =>
Ok().map(_.withHeaders(request.headers))
case request @ POST -> Root / "roundTrip" / label :? Q(q) =>
val headers = request.headers
.get(CIString("HEADER"))
.map(Headers(_))
.getOrElse(Headers.empty)
request.asJson
.map(
_.deepMerge(
Json
.obj(
"label" -> Json.fromString(label),
"query" -> q.map(Json.fromString).getOrElse(Json.Null)
)
.deepDropNullValues
)
)
.flatMap(json => Ok(json, headers = headers))
case request @ (GET -> Root / "custom-code" / IntVar(code)) =>
storeAndReturn(s"customCode$code", request)
case POST -> Root / "book" / _ =>
val body = Json.obj("message" -> Json.fromString("test"))
Ok(body)
}
.orNotFound
}
val randomInt = Resource.eval(IO(scala.util.Random.nextInt(9999)))
val randomPort = randomInt.map(_ + 50000)
def server(app: HttpApp[IO]): Resource[IO, Int]
def retryResource[A](
resource: Resource[IO, A],
max: Int = 10
): Resource[IO, A] =
if (max <= 0) resource
else resource.orElse(retryResource(resource, max - 1))
}
