defmodule Microwaveprop.MailerTest do
  use Microwaveprop.DataCase, async: true

  import Swoosh.Email

  alias Microwaveprop.Mailer

  describe "apply_defaults/1" do
    test "sets From and Reply-To headers" do
      email = Mailer.apply_defaults(new())

      assert email.from == {"NTMS Propagation", "prop@w5isp.com"}
      assert email.reply_to == {"", "graham@mcintire.me"}
    end

    test "preserves existing headers and body" do
      email =
        new()
        |> subject("Test")
        |> text_body("hello")
        |> Mailer.apply_defaults()

      assert email.text_body == "hello"
      assert email.subject == "Test"
    end
  end
end