added test to EnableShardAllocationController

package controllers

import elastic.{ElasticClient, ElasticResponse}

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 EnableShardAllocationControllerSpec extends Specification with Mockito {

  def is =

    s2"""

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

      invoke enableShardAllocation         $enableShardAllocation

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

      """

  val controller = new EnableShardAllocationController

  def enableShardAllocation = {

    val expectedResponse = Json.parse(

      """

        |{

        |  "acknowledged": true,

        |  "persistent": {},

        |  "transient": {

        |    "cluster": {

        |      "routing": {

        |        "allocation": {

        |          "enable": "all"

        |        }

        |      }

        |    }

        |  }

        |}

      """.stripMargin

    )

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

    val client = mock[ElasticClient]

    client.enableShardAllocation("somehost") returns Future.successful(ElasticResponse(200, expectedResponse))

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

    there was one(client).enableShardAllocation("somehost")

    response.body mustEqual expectedResponse

    response.status mustEqual 200

  }

}