ficus

FicusSpec.scala

import org.specs2.mutable._

import com.typesafe.config._
import net.ceedubs.ficus.Ficus._
import net.ceedubs.ficus.readers.ArbitraryTypeReader._

class HelloSpec extends Specification {
  case class MyConfig(
    key1: String,
    key2: String,
    key3: String = "a default string")

  val config1 = ConfigFactory.parseString("""
    somePath {
      key1: hello
      key2: world
      # key3 is unspecified
    }
  """)

  val config2 = ConfigFactory.parseString("""
    somePath {
      key1: goodbye
      # key2 is unspecified
      key3: fallback
    }
  """)

  "something" in {
    config1.as[MyConfig]("somePath") must_== MyConfig("hello", "world", "a default string")
    config2.as[MyConfig]("somePath") must throwA[com.typesafe.config.ConfigException.Missing] // key2 is required

    val merged1 = (config1 withFallback config2).as[MyConfig]("somePath")
    merged1 must_== MyConfig("hello", "world", "fallback")

    val merged2 = (config2 withFallback config1).as[MyConfig]("somePath")
    merged2 must_== MyConfig("goodbye", "world", "fallback")
  }
}