cannery/test/cannery_web/controllers/user_session_controller_test.exs

defmodule CanneryWeb.UserSessionControllerTest do
  @moduledoc """
  Tests the user session controller
  """

  use CanneryWeb.ConnCase, async: true

  @moduletag :user_session_controller_test

  setup %{conn: conn} do
    [current_user: user_fixture() |> confirm_user(), conn: conn]
  end

  describe "GET /users/log_in" do
    test "renders log in page", %{conn: conn} do
      conn = get(conn, ~p"/users/log_in")
      response = html_response(conn, 200)
      assert response =~ "Log in"
    end

    test "redirects if already logged in", %{conn: conn, current_user: current_user} do
      conn = conn |> log_in_user(current_user) |> get(~p"/users/log_in")
      assert redirected_to(conn) == ~p"/"
    end
  end

  describe "POST /users/log_in" do
    test "logs the user in", %{conn: conn, current_user: current_user} do
      conn =
        post(conn, ~p"/users/log_in", %{
          user: %{email: current_user.email, password: valid_user_password()}
        })

      assert get_session(conn, :user_token)
      assert redirected_to(conn) =~ ~p"/"

      # Now do a logged in request and assert on the menu
      conn = get(conn, ~p"/")
      response = html_response(conn, 200)
      assert response =~ current_user.email
      assert response =~ "Are you sure you want to log out?"
    end

    test "logs the user in with remember me", %{conn: conn, current_user: current_user} do
      conn =
        post(conn, ~p"/users/log_in", %{
          user: %{
            email: current_user.email,
            password: valid_user_password(),
            remember_me: "true"
          }
        })

      assert conn.resp_cookies["_cannery_web_user_remember_me"]
      assert redirected_to(conn) =~ ~p"/"
    end

    test "logs the user in with return to", %{conn: conn, current_user: current_user} do
      conn =
        conn
        |> init_test_session(user_return_to: "/foo/bar")
        |> post(~p"/users/log_in", %{
          user: %{
            email: current_user.email,
            password: valid_user_password()
          }
        })

      assert redirected_to(conn) == "/foo/bar"
    end

    test "emits error message with invalid credentials",
         %{conn: conn, current_user: current_user} do
      conn = post(conn, ~p"/users/log_in", %{user: %{email: current_user.email, password: "bad"}})
      response = html_response(conn, 200)
      assert response =~ "Log in"
      assert response =~ "Invalid email or password"
    end
  end

  describe "DELETE /users/log_out" do
    test "logs the user out", %{conn: conn, current_user: current_user} do
      conn = conn |> log_in_user(current_user) |> delete(~p"/users/log_out")
      assert redirected_to(conn) == ~p"/"
      refute get_session(conn, :user_token)
      assert conn.assigns.flash["info"] =~ "Logged out successfully"
    end

    test "succeeds even if the user is not logged in", %{conn: conn} do
      conn = delete(conn, ~p"/users/log_out")
      assert redirected_to(conn) == ~p"/"
      refute get_session(conn, :user_token)
      assert conn.assigns.flash["info"] =~ "Logged out successfully"
    end
  end
end