manuelbernhardt / reactive-web-applications Goto Github PK

For the testing futures with specs2, if one is using play2.4 and also specs3.5, in order to be able to use the await method when testing futures, one should import the specs2 execution environment and add that to each block implicitly:

import org.specs2.matcher.Matchers
import org.specs2.mutable.Specification
import org.specs2.time.NoTimeConversions
import scala.concurrent.duration._

import org.specs2.concurrent.ExecutionEnv

class AuthenticationServiceSpec extends Specification with Matchers with NoTimeConversions {

  "The AuthenticationService" should {

    val service: AuthenticationService = new DummyAuthenticationService

    "correctly authenticate Bob Marley" in { implicit ee: ExecutionEnv =>
      service.authenticateUser("[email protected]", "secret") must beEqualTo (AuthenticationSuccessful).await(1, 200.millis)
    }

    "not authenticate Ziggy Marley" in { implicit ee: ExecutionEnv =>
      service.authenticateUser("[email protected]", "secret") must beEqualTo (AuthenticationUnsuccessful).await(1, 500.millis)
    }

    "fail if it takes too long" in { implicit ee: ExecutionEnv =>
      service.authenticateUser("[email protected]", "secret") must throwA[RuntimeException].await(1, 700.millis)
    }
  }
}

To get the test to run, I needed to add the following dependency into build.sbt

"org.seleniumhq.selenium" % "selenium-firefox-driver" % "2.53.0"

without this line, or with an outdated firefox-driver-specification e.g 2.46.0, selenium complains that:
Was unable to create a Selenium FirefoxDriver on this platform. (OneBrowserPerSuite.scala:333)

(It seems that Selenium drivers are quite picky about which browser-versions they are compatible with. So for example on Ubuntu, with Firefox 45.0.1, using the latest selenium-driver-version (as recommended - currently 2.53.0 as of 14.04.2016) is the solution here. With browsers like Firefox having a quick release cycle, and users generally accepting the updates, then the 2.53.0 will at some point cause brokenness, and so on).

So anyway the libraryDependencies I used in build.sbt to get the test to work are now defined as:

libraryDependencies ++= Seq(
  "org.webjars" %% "webjars-play" % "2.4.0-1",
  "org.webjars" % "jquery" % "2.1.4",
  "org.seleniumhq.selenium" % "selenium-firefox-driver" % "2.53.0",
  "org.scalatest" %% "scalatest" % "2.2.1" % "test",
  "org.scalatestplus" %% "play" % "1.4.0-M4" % "test"
)

Can put this as a PR (if you prefer).

Anyway and slightly off-topic, really an excellent book, this "Reactive Web Applications", been learning a lot going through the MEAP-version chapters - thanks Manuel!

Hi, I just started learning how to use Play and found this book. I hope you are still maintaining the codes.
It is not compiled while nothing has been changed. Could you tell me how to fix this?

Hi!

Listing 8.2 in listing/CH08 is different from CH08/build.sbt

scalajsProjects := Seq(client),

causes a type error. Probably should be

scalaJSProjects := Seq(client),

According to the play documentation evolutions need to be added as a dependency.
Without doing so, i could not get listings 7.3 to 7.5 to work.

It seems Akka version in codes on Github is still 2.3.x, will you rewrite some contents of the book and update Akka version to 2.4?

do u plan to change all the codes into 2.4 before final release?

Here is the error:

Information:3/6/17, 4:00 PM - Compilation completed with 1 error and 0 warnings in 2s 183ms
/Users/kaiyin/scalaProjects/reactive-web-applications/CH02/app/controllers/Application.scala
Error:(11, 19) object index is not a member of package views.html
    Ok(views.html.index("Tweets"))

Also, when importing sbt project into intellij, I got the following warinings:

4:02 PM	SBT project import
				[warn] Multiple dependencies with the same organization/name but different versions. To avoid conflict, pick one version:
				[warn]  * org.apache.httpcomponents:httpclient:(4.0.1, 4.3.4)
				[warn]  * com.google.guava:guava:(18.0, 16.0.1)
				[warn]  * org.apache.httpcomponents:httpcore:(4.0.1, 4.3.2)
				[warn]  * commons-logging:commons-logging:(1.1.1, 1.1.3)
				[warn]  * org.scala-lang.modules:scala-parser-combinators_2.11:(1.0.1, 1.0.2, 1.0.3)
				[warn]  * org.scala-lang.modules:scala-xml_2.11:(1.0.1, 1.0.2, 1.0.3)

is there a possibility for 2.5?