controller.scala

package com.twitter.finatrahelloworld

import com.twitter.finatra.{Controller, FinatraServer, View}

case class Tweet(status:String)

class TimelineView(val tweets:List[Tweet]) extends View {
  val template = "timeline.mustache"
}

object App {

  class HelloWorld extends Controller {

    def tweets = List(new Tweet("hey!"), new Tweet("lol"))

    get("/tweets.json") { request =>
      render.json(tweets)
    }

    get("/tweets") { request =>
      val tweetsView  = new TimelineView(tweets)

      render.view(tweetsView)
    }

    get("/status/:status") { request =>
      val statusCode = request.params("status").toInt

      render.nothing.status(statusCode)
    }

    get("/not_found") { request =>
      render.nothing.notFound
    }

    get("/headers") { request =>
      render.nothing.header("X-GitSHA", "1ecd6b1")
    }

  }

  def main(args: Array[String]) {
    val helloWorld = new HelloWorld

    FinatraServer.register(helloWorld)
    FinatraServer.start()
  }

}

spec.scala

package com.twitter.finatrahelloword.test

import com.twitter.finatra.test.SpecHelper
import com.twitter.finatrahelloworld.App

import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner

@RunWith(classOf[JUnitRunner])
class AppSpec extends SpecHelper {

  def app = { new App.HelloWorld }

  "GET /tweets.json" should "respond 200" in {
    get("/tweets.json")
    response.code should equal (200)
  }

  "GET /tweets" should "respond 200" in {
    get("/tweets")
    response.code should equal (200)
    response.body should include ("lol")
  }

  "GET /status/401" should "respond 401" in {
    get("/status/401")
    response.code should equal (401)
  }

  "GET /not_found" should "respond 404" in {
    get("/not_found")
    response.code should equal (404)
  }

  "GET /headers" should "respond with headers" in {
    get("/headers")
    response.getHeader("X-GitSHA") should equal ("1ecd6b1")
  }
}