Scala Test: File upload with additional attributes - MultipartFormData - scala

Question

I am actually trying to test the creation of a new product.
One attribute of a product is a picture. This picture should be stored into a directory called "images". In the database only the file name should be stored as a string in the picture column.
So I tried to create a MultiPartFormData Fake Request and add the attributes into the dataParts attribute of the MultiPartFormData.
But when executing the test i get following error:
\test\InventoryControllerSpec.scala:50: Cannot write an instance of play.api.mvc.MultipartFormData[play.api.
libs.Files.TemporaryFile] to HTTP response. Try to define a Writeable[play.api.mvc.MultipartFormData[play.api.libs.Files.TemporaryFile]]
The product model looks like following:
case class Product(id: Option[Int],
name: String,
category: String,
picture: Option[String],
amount: Int,
criticalAmount: Int
) {
}
object Product {
implicit val productFormat = Json.format[Product]
def tupled(t: (Option[Int], String, String, Option[String], Int, Int)) =
Product(t._1, t._2, t._3, t._4, t._5, t._6)
def toTuple(p: Product) = Some((p.id, p.name, p.category, p.picture, p.amount, p.criticalAmount))
}
The database model looks like this:
class Products(tag: Tag) extends Table[Product](tag, "PRODUCTS"){
def id = column[Int]("ID", O.PrimaryKey, O.AutoInc)
def name = column[String]("NAME")
def category = column[String]("CATEGORY")
def picture = column[String]("PICTURE")
def amount = column[Int]("AMOUNT")
def criticalAmount = column[Int]("CRITICALAMOUNT")
def * = (id.?, name, category, picture.?, amount, criticalAmount) <>(Product.tupled, Product.toTuple)
}
I think also the create function in the controller should work:
val productForm = Form(
tuple(
"name" -> nonEmptyText,
"category" -> nonEmptyText,
"amount" -> number,
"criticalAmount" -> number
)
)
def create = SecuredAction(IsInventoryAdmin()
).async(parse.multipartFormData) {
implicit request => {
val pr : Option[Product] = productForm.bindFromRequest().fold (
errFrm => None,
product => Some(Product(None, product._1, product._2, None, product._3,product._4))
)
request.body.file("picture").map { picture =>
pr.map { product =>
val filename = picture.filename
val contentType = picture.contentType
val filePath = s"/images/$filename"
picture.ref.moveTo(new File(filePath), replace=true)
val fullProduct = product.copy(picture = Some(filePath))
inventoryRepo.createProduct(fullProduct).map(p => Ok(Json.toJson(p)))
}.getOrElse{
Future.successful(
BadRequest(Json.obj("message" -> "Form binding error.")))
}
}.getOrElse {
Future.successful(
BadRequest(Json.obj("message" -> "File not attached.")))
}
}
}
Now my problem is the creation of a Scala Test which checks if the functionality is working. At the moment my code looks like this:
"allow inventory admins to create new products" in new RepositoryAwareContext {
new WithApplication(application) {
val token = CSRF.SignedTokenProvider.generateToken
val tempFile = TemporaryFile(new java.io.File("/images/the.file"))
val part = FilePart[TemporaryFile](key = "the.file", filename = "the.file", contentType = Some("image/jpeg"), ref = tempFile)
val formData = MultipartFormData(dataParts = Map(("name", Seq("Test Product")),("category", Seq("Test Category")),("amount", Seq("50")), ("criticalAmount", Seq("5"))), files = Seq(part), badParts = Seq(), missingFileParts = Seq())
val result = route(FakeRequest(POST, "/inventory", FakeHeaders(), formData)
.withAuthenticator[JWTAuthenticator](inventoryAdmin.loginInfo)
.withHeaders("Csrf-Token" -> token)
.withSession("csrfToken" -> token)
).get
val newInventoryResponse = result
status(newInventoryResponse) must be(OK)
//contentType(newInventoryResponse) must be(Some("application/json"))
val product = contentAsJson(newInventoryResponse).as[Product]
product.id mustNot be(None)
product.name mustBe "Test Product"
product.category mustBe "Test Category"
}
}
It would be great if anybody can help me because i can not find a solution on my own...
Kind regards!