Mockito with Dependency Injection - scala

Question

I'm using Play Framework 2.5 and trying to test one of my DAO class based on the example here.
But my class under test has dependency injection and I wonder how to mock it.
I tried to do something but it seems a bit clumsy, and I would like help to improve it.
Here is my code :
class MyController #Inject()(val mydao: MyDAOClass) extends Controller {
def getData = Action { request =>
mydao.fetchData
}
}
class MyDAOClass #Inject()(ws: WSClient) {
def urls(): List[String] = { List("url1", "url2") }
// fetch data on different servers and should merge it.
def fetchData(): Future[List[String]] = {
val futures: List[Future[WSResponse]] = urls map { url =>
ws.url(url + "/some/data").withRequestTimeout(10000.millis).get()
}
futures map { future =>
future onComplete {
case Success(resp) => println(resp.json)
case Failure(t) => println("An error has occured: " + t.printStackTrace)
}
}
Future(List())
}
}
Here is my test code :
trait DAOTrait {
def urls: List[String]
}
class MyDAOClass extends PlaySpec with MockitoSugar {
"MyDAOClass" should {
"get a list of data" in {
Server.withRouter() {
case GET(p"/url1/some/data") => Action {
Results.Ok(Json.arr(Json.obj("name" -> "data1")))
}
} { implicit port =>
val mockMyDAOClass = mock[DAOTrait]
when(mockMyDAOClass.urls) thenReturn List("url1")
implicit val materializer = Play.current.materializer
WsTestClient.withClient { client =>
val mydao = new MyDAOClass(client) {
override def urls = mockMyDAOClass.urls
}
val result = Await.result(
mydao.fetchData(), 10.seconds)
result mustEqual List("data1")
}
}
}
}
}
The code is not finished in MyDAOClass, but it is enough to start implementing tests.
1) How to mock class that have dependency injection ?
2) When testing this code I have the following exception in MyDAOClass case Failure(t)
java.net.ConnectException: http://localhost:40183
at org.asynchttpclient.netty.channel.NettyConnectListener.onFailure(NettyConnectListener.java:137)
at org.asynchttpclient.netty.request.NettyChannelConnector$1.onFailure(NettyChannelConnector.java:106)
at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:28)
at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:20)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:683)
at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:604)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:564)
at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:425)
at io.netty.channel.nio.AbstractNioChannel.doClose(AbstractNioChannel.java:462)
at io.netty.channel.socket.nio.NioSocketChannel.doClose(NioSocketChannel.java:236)
at io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:611)
at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:590)
at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:534)
at io.netty.channel.nio.NioEventLoop.closeAll(NioEventLoop.java:576)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:361)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.channels.ClosedChannelException
but it should return Result.Ok instead.
3) Any advice welcome.