Test for Vertx 3 Scala support

HttpDownloadTest.scala

package io.vertx.lang.scala.http

import io.vertx.core.file.OpenOptions
import io.vertx.scala.core.Vertx
import io.vertx.scala.core.streams.Pump
import org.junit.runner.RunWith
import org.scalatest.concurrent.AsyncAssertions
import org.scalatest.junit.JUnitRunner
import org.scalatest.{FlatSpec, Matchers}

/**
  * @author <a href="mailto:jb@campudus.com">Joern Bernhardt</a>
  */
@RunWith(classOf[JUnitRunner])
class HttpDownloadTest extends FlatSpec with Matchers with AsyncAssertions {

  "A HttpClient" should "be able to download something" in {
    val w = new Waiter
    val vertx = Vertx.vertx()
    val httpServer = vertx.createHttpServer()
    val client = vertx.createHttpClient()
    val fs = vertx.fileSystem()
    val testFile = fs.openBlocking("testfile.txt", new OpenOptions())
    val outFile = fs.openBlocking("testfile.out", new OpenOptions().setCreate(true))

    println("hello")
    httpServer.requestHandler({ req =>
      println("got a request")
      req.response().setChunked(true)
      Pump.pump(testFile, req.response()).start()
      println("pumping!")
      testFile.endHandler({() =>
        println("pumped testFile into request")
        req.response().end()
      })
    })

    httpServer.listen(14432, { ar =>
      assert(ar.succeeded())
      println("server listens, sending a request")

      client.getNow(14432, "localhost", "/testfile", { response =>
        println("client gets response")
        Pump.pump(response, outFile).start()
        response.endHandler({ () =>
          println("response done")
          w.dismiss()
        })
      })
    })

    w.await()
  }

}