test.ex

defmodule Trello.AuthControllerTest do
  use Trello.ConnCase

  alias Trello.User

  @valid_attrs %{email: "test@test.fr", f_name: "younes", l_name: "some content", password: "1234"}

  setup %{conn: conn} do
    {:ok, conn: put_req_header(conn, "accept", "application/json")}
  end

  test "login with invalid informations", %{conn: conn} do
    credentials = %{login: "user.email", password: "dummy"}
    conn = post(conn, auth_path(conn, :create), user: credentials)
    assert json_response(conn, :unprocessable_entity) == Trello.AuthView.render("error.json")
  end

  test "login with valid informations and get a token", %{conn: conn} do
    user = User.changeset(%User{}, @valid_attrs) |> Repo.insert!
    credentials = %{login: user.email, password: user.password}
    conn = post(conn, auth_path(conn, :create), user: credentials)
    assert json_response(conn, 200)["token"]
  end
end