Roman Numerals Kata

Roman.scala

package kata
import org.scalatest.matchers.ShouldMatchers
import org.scalatest.{BeforeAndAfterEach, FlatSpec}

class Roman extends FlatSpec with ShouldMatchers  {

  case class Symbol(latin:Int, roman:String)
  
  var symbols = List(Symbol(5,"V"), Symbol(4, "IV"), Symbol(1,"I"))
  
  def toRoman(number:Int): String = {
    var result = ""
    var remaining = number
    symbols.foreach(symbol => {
      1 to (remaining / symbol.latin) foreach { _ =>
        result = result + symbol.roman
        remaining = remaining - symbol.latin
      }     
    })

    result
  }
  it should "convert a 1 to I" in {
    assert(toRoman(1) === "I")
  }

  it should "convert a 2 to II" in {
    assert(toRoman(2) === "II")
  }

  it should "convert a 5 to V" in {
    assert(toRoman(5) === "V")
  }
  
  it should "convert a 4 to IV" in {
    assert(toRoman(5) === "V")
  }
}