I have a simple "save" function that is using akka-stream-alpakka
multipartUpload
, it looks like this:
def save(fileName: String): Future[AWSLocation] = {
val uuid: String = s"${UUID.randomUUID()}"
val s3Sink: Sink[ByteString, Future[MultipartUploadResult]] = s3Client.multipartUpload(s"$bucketName", s"$uuid/$fileName")
val file = Paths.get(s"/tmp/$fileName")
FileIO.fromPath(file).runWith(s3Sink).map(res => {
AWSLocation(uuid, fileName, res.key)
}).recover {
case ex: S3Exception =>
logger.error("Upload to S3 failed with s3 exception", ex)
throw ex
case ex: Throwable =>
logger.error("Upload to S3 failed with an unknown exception", ex)
throw ex
}
}
I want to test this function, 2 cases:
- that multipartUpload succeed and I get AWSLocation (my case class) back.
- that multipartUpload fails and I get S3Exception
so i thought to spy on multipartUpload and return my own sink, like this:
val mockAmazonS3ProxyService: S3ClientProxy = mock[S3ClientProxy]
val s3serviceMock: S3Service = mock[S3Service]
override val fakeApplication: Application = GuiceApplicationBuilder()
.overrides(bind[S3ClientProxy].toInstance(mockAmazonS3ProxyService))
.router(Router.empty).build()
"test" in {
when(mockAmazonS3ProxyService.multipartUpload(anyString(), anyString())) thenReturn Sink(ByteString.empty, Future.successful(MultipartUploadResult(Uri(""),"","myKey123","",Some(""))))
val res = s3serviceMock.save("someFileName").futureValue
res.key shouldBe "myKey123"
}
the issue is that i get Error:(47, 93) akka.stream.scaladsl.Sink.type does not take parameters
, i understand i cant create sink like this, but how can i?
or what could be a better way testing this?