ExKeyCDN Zone test using Mox

zone_test.exs

defmodule ExKeyCDN.ZoneTest do
  use ExUnit.Case, async: true

  import Mox

  # Make sure mocks are verified when the test exits
  setup :verify_on_exit!

  describe "list/0" do
    test "mock" do
      expected = [
        zones: [%ExKeyCDN.Zone{}, %ExKeyCDN.Zone{}],
        limits: [rate_limit_remaining: "60", rate_limit: "60"]
      ]

      ExKeyCDN.MockZone
      |> expect(:list, fn -> expected end)

      assert zone().list() == expected
    end
  end
  defp zone do
    Application.get_env(:exkeycdn, :zone)
  end
end