json4s serialization error: could not find implicit value for parameter formats: org.json4s.Formats [error] val theJson = org.json4s.native.Serialization.write(Map("key" -> "value"))

gistfile1.scala

package com.shutterstock.searchservice

import org.scalatra.test.scalatest._
import scala.Predef._
import org.scalatest._

import org.json4s.native.JsonMethods._
import org.json4s.native.Serialization.write
import org.json4s.{ DefaultFormats, Formats, ParserUtil }
import org.json4s.JsonDSL._
import org.json4s.JsonAST._
import scala.text._

class SearchServiceSpec extends ScalatraSuite with FunSuite {
  addServlet(classOf[SearchService], "/*")

  test("simple get") {
    get("/") {
      status should equal (200)
/*
      body should include (compact(DocText(""" {
          "key": "value",
          "list": [1, 2, 3]
      } """)))
*/
      val foo: JObject = ("key" -> "value") ~ ("list" -> List(1, 2, 3))
      val boo = Map("key" -> "value", "list" -> List(1, 2, 3))
      val goo = Map("key" -> "value")
      val theJson = org.json4s.native.Serialization.write(Map("key" -> "value"))

      body should include (theJson)
    }
  }

}