defmodule Store.Cart do
  @moduledoc """
  Some Module main doc..
  """
  @doc """
  Some method behavior.

  ## Examples

    iex> Store.Cart.some_method([])
    {:ok}

  """
  def some_method(opts \\ [])
  def some_method(opts) when opts == [] do
    {:ok}
  end
  def some_method(opts) do
    {:ok, [opts]}
  end
  defp private_method do
    {:ok}
  end
end

defmodule Shopping.CartTest do
  use Store.DataCase
  alias Shopping.Cart
  setup do
    :ok
  end
  describe "some_method/0" do
    test "some method without param" do"
      assert Cart.some_method == {:ok}
    end
  end

  describe "some_method/1" do
    test "some method with param" do"
      assert Cart.some_method(1) == {:ok, [1]}
    end
  end
end