无法使用 Action.async 测试控制器 [英] Unable to test controller using Action.async

问题描述

我正在尝试测试使用新 Action.async 的控制器.遵循 documentation 我已经排除了控制器下的部分我想测试以将特征与类型引用分开:

I'm trying to test controller, which is using new Action.async. Following documentation I have excluded part under controller I want to test to separate trait with type reference:

trait UserController { this: Controller =>
  def index() = Action { /* snip */ }
  def register() = Action.async(parse.json) { request => /* snip */ }
}

文档说明我应该将其测试为:

Documentation states that I'm supposed to test it as:

object UsersControllerSpec extends PlaySpecification with Results {
  class TestController() extends Controller with UserController
    "index action" should {
      "should be valid" in {
        val controller = new TestController()
        val result: Future[SimpleResult] = controller.index().apply(FakeRequest())
        /* assertions */
      }
    }
  }
}

对于 index() 方法它工作得很好，不幸的是我不能用 register() 做同样的事情，因为在它上面应用 FakeRequest 返回 Iteratee[Array[Byte], SimpleResult].我注意到它有返回 Future[SimpleResult] 的 run() 方法，但无论我如何构建 FakeRequest 它都会返回 400 没有任何内容或标题.在我看来，FakeRequest 的内容完全被忽略了.我应该以某种方式将请求正文提供给 iteratee 然后运行它吗?我找不到任何示例，我该怎么做.

For index() method it works perfectly, unfortunately I'm not able to do the same with register(), as applying FakeRequest on it returns instance of Iteratee[Array[Byte], SimpleResult]. I've noticed it has run() method that returns Future[SimpleResult] but no matter how I build FakeRequest it returns with 400 without any content or headers. Seems to me like content of FakeRequest is disregarded at all. Am I supposed to feed request body to iteratee somehow and then run it? I couldn't find any example how could I do that.

推荐答案

对我来说是这样的:

import concurrent._
import play.api.libs.json._
import play.api.mvc.{SimpleResult, Results, Controller, Action}
import play.api.test._
import ExecutionContext.Implicits.global

trait UserController {
  this: Controller =>
  def index() = Action {
    Ok("index")
  }

  def register() = Action.async(parse.json) {
    request =>
      future(Ok("register: " + request.body))
  }
}

object UsersControllerSpec extends PlaySpecification with Results {

  class TestController() extends Controller with UserController

  "register action" should {
    "should be valid" in {
      val controller = new TestController()
      val request = FakeRequest().withBody(Json.obj("a" -> JsString("A"), "b" -> JsString("B")))
      val result: Future[SimpleResult] = controller.register()(request)
      /* assertions */
      contentAsString(result) === """register: {"a":"A","b":"B"}"""
    }
  }
}

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