added test to OptimizeIndexController

package controllers

import elastic.{ElasticClient, ElasticResponse}

import exceptions.MissingRequiredParamException

import models.CerebroRequest

import org.specs2.Specification

import org.specs2.mock.Mockito

import play.api.libs.json.Json

import play.api.test.FakeApplication

import scala.concurrent.duration.Duration

import scala.concurrent.{Await, Future}

object OptimizeIndexControllerSpec extends Specification with Mockito {

  def is =

    s2"""

    OptimizeIndexController should                       ${step(play.api.Play.start(FakeApplication()))}

      invoke optimizeIndex                               $optimizeIndex

      should throw exception if indices param is missing $missingIndices

                                                         ${step(play.api.Play.stop(FakeApplication()))}

      """

  val controller = new OptimizeIndexController

  def optimizeIndex = {

    val expectedResponse = Json.parse(

      """

        |{

        |  "_shards": {

        |    "total": 10,

        |    "successful": 5,

        |    "failed": 0

        |  }

        |}

      """.stripMargin

    )

    val body = Json.obj("host" -> "somehost", "indices" -> "a,b,c")

    val client = mock[ElasticClient]

    client.optimizeIndex("a,b,c", "somehost") returns Future.successful(ElasticResponse(200, expectedResponse))

    val response = Await.result(controller.processElasticRequest(CerebroRequest(body), client), Duration("1s"))

    there was one(client).optimizeIndex("a,b,c", "somehost")

    response.body mustEqual expectedResponse

    response.status mustEqual 200

  }

  def missingIndices = {

    val body = Json.obj("host" -> "somehost")

    val client = mock[ElasticClient]

    controller.processElasticRequest(CerebroRequest(body), client) must throwA[MissingRequiredParamException]

  }

}