小编reg*_*win的帖子

我已经开始使用Play和Play-ReactiveMongo插件,并在GET"document by id"场景中测试404响应.不幸的是,而不是Play返回404 NotFound响应,我得到了这个异常:

java.util.NoSuchElementException: JsError.get
        at play.api.libs.json.JsError.get(JsResult.scala:11) ~[play_2.10.jar:2.1.1]
        at play.api.libs.json.JsError.get(JsResult.scala:10) ~[play_2.10.jar:2.1.1]
        at play.modules.reactivemongo.json.collection.JSONGenericHandlers$StructureBufferWriter$.write(jsoncollection.scala:44) ~[play2-reactivemongo_2.10-0.9.jar:0.9]
        at play.modules.reactivemongo.json.collection.JSONGenericHandlers$StructureBufferWriter$.write(jsoncollection.scala:42) ~[play2-reactivemongo_2.10-0.9.jar:0.9]
        at reactivemongo.api.collections.GenericQueryBuilder$class.reactivemongo$api$collections$GenericQueryBuilder$$write(genericcollection.scala:323) ~[reactivemongo_2.10-0.9.jar:0.9]
        at reactivemongo.api.collections.GenericQueryBuilder$class.cursor(genericcollection.scala:333) ~[reactivemongo_2.10-0.9.jar:0.9]

如果id参数与现有文档匹配,则下面的getById函数成功返回单个文档,如果找不到文档,则在"one [JsValue]"行上成功返回异常.

路线文件:

GET       /items/:id            controllers.ItemsController.getById(id: String)

控制器对象:

object ItemsController extends Controller with MongoController {

    def itemsCollection: JSONCollection = db.collection[JSONCollection]("items")

    def getById(id: String) = Action {
       Async {  

              val query = Json.obj("_id" -> Json.obj("$oid" ->id))
              val futureItem = itemsCollection.
                find(query).
                one[JsValue]

              futureItem.map {
                case Some(item) => Ok(item)
                case None => NotFound(Json.obj("message" -> …

我看到有对Option类型的支持,但是自定义案例类呢？

我有点想这样做:

result match {
  case SuccessCase(values) => {
    values.foo should be ("bar")
  }
  case FailureCase => // should fail test, but how to say this in ScalaTest?
}