Build.sbt

name := "Name goes here"

version := "0.0.1"

libraryDependencies += "org.scalatest" % "scalatest_2.10" % "2.0" % "test"

testTextSizer.scala

// src/test/scala/testTextSizer.scala

import org.scalatest._

class TestTextSizer extends FunSpec with ShouldMatchers {

  def sizer(x : List[Char]) = {
    0
  }

  describe("A text sizer") {
    it("should give length zero") {
      sizer(List()) should be (0)
    }
  }
}