test.exs

ExUnit.start

defmodule Test do
  use ExUnit.Case

  @moduledoc """
  Run with test

  ## Examples

  	elixir test.exs

  """


  defp is_odd?(n), do: rem(n, 2) == 1
  defp is_even?(n), do: rem(n, 2) == 0

  def my_filter(:is_odd, arr) do
    Enum.filter(arr, &is_odd?/1)
  end

  def my_filter(:is_even, arr) do
    Enum.filter(arr, &is_even?/1)
  end

  test "assert is_odd" do
      my_filter(:is_odd, [1,2,3,4]) == [1, 3]
  end
  test "assert is_even" do
      my_filter(:is_even, [1,2,3,4]) == [2, 4]
  end
end