unit testing HTTP4s encoders

ExampleEncoderTest.scala

package httpServices

import io.circe.{Encoder, Printer}
import org.http4s.circe.CirceInstances
import org.scalatest.{FlatSpec, Matchers}
import org.http4s.dsl._

class GistTest extends FlatSpec with Matchers {

  case class TestObject(someValue: Int, someOptionalValue:Option[Int])

  object TestObject {
    import io.circe.generic.semiauto._

    implicit val testObjectEncoder: Encoder[TestObject] = deriveEncoder[TestObject]
  }

  object Encoders extends CirceInstances {
    override protected def defaultPrinter: Printer = Printer.noSpaces.copy(dropNullKeys = true)

    implicit val schedulesEncoder = jsonEncoderOf[TestObject]
  }

  it should "Test the Encoders Object concisely!" in {
    import Encoders._

    // It would be nice to be able to test the Encoders._ object without creating an `Ok` response
    Ok(TestObject(5, None)).as[String].unsafePerformSync shouldEqual
      """{"someValue":5}"""
  }
}