ls = [0, 1, 3, 6, 10]

ls = [0, 1, 3, 6, 10]
ls = [1, 3, 6, 10]
ls = [3, 6, 10]
ls = [6, 10]
ls = [10]
ls = []

object SumsOfParts {

  def partsSums(l: List[Int]): List[Int] = {

    var x: List[Int] = List()
    if (l.isEmpty)
      x
    else {
      x :+ l.sum
      partsSums(l.tail)
    }
  }
}

partsSums(List(0, 1, 3, 6, 10)) should return List(20, 20, 19, 16, 10, 0)
Test Failed

tail of empty list
 Stack Trace
Completed in 4ms
 partsSums(List(1, 2, 3, 4, 5, 6)) should return List(21, 20, 18, 15, 11, 6, 0)
Test Failed

tail of empty list
 Stack Trace
 partsSums(List(744125, 935, 407, 454, 430, 90, 144, 6710213, 889, 810, 2579358)) should return List(10037855, 9293730, 9292795, 9292388, 9291934, 9291504, 9291414, 9291270, 2581057, 2580168, 2579358, 0)
Test Failed

tail of empty list
 Stack Trace
Completed in 1ms
 partsSums(List(30350, 76431, 156228, 78043, 98977, 80169, 32457, 182875, 162323, 17508, 57971, 171907)) should return List(1145239, 1114889, 1038458, 882230, 804187, 705210, 625041, 592584, 409709, 247386, 229878, 171907, 0)
Test Failed