gistfile1.scala

import org.specs._

object TriangleWordIdentifierSpec extends Specification{
  "letter to number converter" should {
    "convert A to 1" in {
      convertLetterToNumber('A') must be(1)
    }
    "convert a to 1" in {
      convertLetterToNumber('a') must be(1)
    }
    "convert C to 3" in {
      convertLetterToNumber('C') must be(3)
    }
    "convert c to 3" in {
      convertLetterToNumber('c') must be(3)
    }
  }
  "generate word value" should {
    "return sum of each character for 'abc'" in {
      wordValue("abc") must be(1 + 2 + 3)
    }
    "return sum of each character for 'sky'" in {
      wordValue("Sky") must be(55)
    }
    "'ddd' should equal 4 + 4 + 4" in {
      wordValue("ddd") must be (4 + 4 + 4)
    }
  }

}


--- code:
object TriangleWordIdentifier{
  def isTriangleWord(word:String) = {
    true
  }
}

object convertLetterToNumber extends (Char => Int){
  override def apply(s:Char) = s.toUpperCase.toInt - ('A'.toInt-1)
}


object wordValue extends (String => Int){
  override def apply(s:String) = {
    List.fromString(s).foldRight(0)((a,b) => convertLetterToNumber(a)+b)
  }
}