Elixir implementation of five string operations

string_ops.ex

import String

defmodule StringOps do
  def clean_up(title) do
    title
      |> fixWhitespace
      |> fixHyphenation
      |> splitIntoSentences
      |> List.first
  end

  def fixWhitespace(s),  do: replace(s, "\n", " ")

  def fixHyphenation(s), do: replace(s, "- ", "")

  def splitIntoSentences(a_string) do
    a_string
      |> split(". ")
      |> Enum.map(&ensure_ends_with_period/1)
  end

  def ensure_ends_with_period(sentence) do
    sentence <> if ends_with?(sentence, "."), do: "", else: "."
  end
end

string_ops_test.ex

import StringOps

defmodule StringOpsTest do
  use ExUnit.Case

  test "fixHyphenation rejoins a word" do
    assert fixHyphenation("auto- mobile") == "automobile"
  end

  test "fixWhitespace changes a newline to a space" do
    assert fixWhitespace("and\nthe story") == "and the story"
  end

  test "clean_up handles extra text" do
    input = "Relating to the state transient lodging tax; creating\nnew provisions; amending ORS 284.131 and\n320.305; prescribing an effective date; and pro-\nviding for revenue raising that requires approval\nby a three-fifths majority.\nWhereas Enrolled House Bill 2267 (chapter 818,"
    assert clean_up(input) == "Relating to the state transient lodging tax; creating new provisions; amending ORS 284.131 and 320.305; prescribing an effective date; and providing for revenue raising that requires approval by a three-fifths majority."
  end
end