feat(user): use gen auth for users

test/learning_phoenix_web/controllers/user_session_controller_test.exs

@@ -0,0 +1,147 @@
+defmodule LearningPhoenixWeb.UserSessionControllerTest do
+  use LearningPhoenixWeb.ConnCase
+
+  import LearningPhoenix.AccountsFixtures
+  alias LearningPhoenix.Accounts
+
+  setup do
+    %{unconfirmed_user: unconfirmed_user_fixture(), user: user_fixture()}
+  end
+
+  describe "POST /users/log-in - email and password" do
+    test "logs the user in", %{conn: conn, user: user} do
+      user = set_password(user)
+
+      conn =
+        post(conn, ~p"/users/log-in", %{
+          "user" => %{"email" => 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 =~ user.email
+      assert response =~ ~p"/users/settings"
+      assert response =~ ~p"/users/log-out"
+    end
+
+    test "logs the user in with remember me", %{conn: conn, user: user} do
+      user = set_password(user)
+
+      conn =
+        post(conn, ~p"/users/log-in", %{
+          "user" => %{
+            "email" => user.email,
+            "password" => valid_user_password(),
+            "remember_me" => "true"
+          }
+        })
+
+      assert conn.resp_cookies["_learning_phoenix_web_user_remember_me"]
+      assert redirected_to(conn) == ~p"/"
+    end
+
+    test "logs the user in with return to", %{conn: conn, user: user} do
+      user = set_password(user)
+
+      conn =
+        conn
+        |> init_test_session(user_return_to: "/foo/bar")
+        |> post(~p"/users/log-in", %{
+          "user" => %{
+            "email" => user.email,
+            "password" => valid_user_password()
+          }
+        })
+
+      assert redirected_to(conn) == "/foo/bar"
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) =~ "Welcome back!"
+    end
+
+    test "redirects to login page with invalid credentials", %{conn: conn, user: user} do
+      conn =
+        post(conn, ~p"/users/log-in?mode=password", %{
+          "user" => %{"email" => user.email, "password" => "invalid_password"}
+        })
+
+      assert Phoenix.Flash.get(conn.assigns.flash, :error) == "Invalid email or password"
+      assert redirected_to(conn) == ~p"/users/log-in"
+    end
+  end
+
+  describe "POST /users/log-in - magic link" do
+    test "logs the user in", %{conn: conn, user: user} do
+      {token, _hashed_token} = generate_user_magic_link_token(user)
+
+      conn =
+        post(conn, ~p"/users/log-in", %{
+          "user" => %{"token" => token}
+        })
+
+      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 =~ user.email
+      assert response =~ ~p"/users/settings"
+      assert response =~ ~p"/users/log-out"
+    end
+
+    test "confirms unconfirmed user", %{conn: conn, unconfirmed_user: user} do
+      {token, _hashed_token} = generate_user_magic_link_token(user)
+      refute user.confirmed_at
+
+      conn =
+        post(conn, ~p"/users/log-in", %{
+          "user" => %{"token" => token},
+          "_action" => "confirmed"
+        })
+
+      assert get_session(conn, :user_token)
+      assert redirected_to(conn) == ~p"/"
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) =~ "User confirmed successfully."
+
+      assert Accounts.get_user!(user.id).confirmed_at
+
+      # Now do a logged in request and assert on the menu
+      conn = get(conn, ~p"/")
+      response = html_response(conn, 200)
+      assert response =~ user.email
+      assert response =~ ~p"/users/settings"
+      assert response =~ ~p"/users/log-out"
+    end
+
+    test "redirects to login page when magic link is invalid", %{conn: conn} do
+      conn =
+        post(conn, ~p"/users/log-in", %{
+          "user" => %{"token" => "invalid"}
+        })
+
+      assert Phoenix.Flash.get(conn.assigns.flash, :error) ==
+               "The link is invalid or it has expired."
+
+      assert redirected_to(conn) == ~p"/users/log-in"
+    end
+  end
+
+  describe "DELETE /users/log-out" do
+    test "logs the user out", %{conn: conn, user: user} do
+      conn = conn |> log_in_user(user) |> delete(~p"/users/log-out")
+      assert redirected_to(conn) == ~p"/"
+      refute get_session(conn, :user_token)
+      assert Phoenix.Flash.get(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 Phoenix.Flash.get(conn.assigns.flash, :info) =~ "Logged out successfully"
+    end
+  end
+end

test/learning_phoenix_web/live/user_live/confirmation_test.exs

@@ -0,0 +1,105 @@
+defmodule LearningPhoenixWeb.UserLive.ConfirmationTest do
+  use LearningPhoenixWeb.ConnCase
+
+  import Phoenix.LiveViewTest
+  import LearningPhoenix.AccountsFixtures
+
+  alias LearningPhoenix.Accounts
+
+  setup do
+    %{unconfirmed_user: unconfirmed_user_fixture(), confirmed_user: user_fixture()}
+  end
+
+  describe "Confirm user" do
+    test "renders confirmation page for unconfirmed user", %{conn: conn, unconfirmed_user: user} do
+      token =
+        extract_user_token(fn url ->
+          Accounts.deliver_login_instructions(user, url)
+        end)
+
+      {:ok, _lv, html} = live(conn, ~p"/users/log-in/#{token}")
+      assert html =~ "Confirm and stay logged in"
+    end
+
+    test "renders login page for confirmed user", %{conn: conn, confirmed_user: user} do
+      token =
+        extract_user_token(fn url ->
+          Accounts.deliver_login_instructions(user, url)
+        end)
+
+      {:ok, _lv, html} = live(conn, ~p"/users/log-in/#{token}")
+      refute html =~ "Confirm my account"
+      assert html =~ "Log in"
+    end
+
+    test "confirms the given token once", %{conn: conn, unconfirmed_user: user} do
+      token =
+        extract_user_token(fn url ->
+          Accounts.deliver_login_instructions(user, url)
+        end)
+
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in/#{token}")
+
+      form = form(lv, "#confirmation_form", %{"user" => %{"token" => token}})
+      render_submit(form)
+
+      conn = follow_trigger_action(form, conn)
+
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) =~
+               "User confirmed successfully"
+
+      assert Accounts.get_user!(user.id).confirmed_at
+      # we are logged in now
+      assert get_session(conn, :user_token)
+      assert redirected_to(conn) == ~p"/"
+
+      # log out, new conn
+      conn = build_conn()
+
+      {:ok, _lv, html} =
+        live(conn, ~p"/users/log-in/#{token}")
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~ "Magic link is invalid or it has expired"
+    end
+
+    test "logs confirmed user in without changing confirmed_at", %{
+      conn: conn,
+      confirmed_user: user
+    } do
+      token =
+        extract_user_token(fn url ->
+          Accounts.deliver_login_instructions(user, url)
+        end)
+
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in/#{token}")
+
+      form = form(lv, "#login_form", %{"user" => %{"token" => token}})
+      render_submit(form)
+
+      conn = follow_trigger_action(form, conn)
+
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) =~
+               "Welcome back!"
+
+      assert Accounts.get_user!(user.id).confirmed_at == user.confirmed_at
+
+      # log out, new conn
+      conn = build_conn()
+
+      {:ok, _lv, html} =
+        live(conn, ~p"/users/log-in/#{token}")
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~ "Magic link is invalid or it has expired"
+    end
+
+    test "raises error for invalid token", %{conn: conn} do
+      {:ok, _lv, html} =
+        live(conn, ~p"/users/log-in/invalid-token")
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~ "Magic link is invalid or it has expired"
+    end
+  end
+end

test/learning_phoenix_web/live/user_live/login_test.exs

@@ -0,0 +1,109 @@
+defmodule LearningPhoenixWeb.UserLive.LoginTest do
+  use LearningPhoenixWeb.ConnCase
+
+  import Phoenix.LiveViewTest
+  import LearningPhoenix.AccountsFixtures
+
+  describe "login page" do
+    test "renders login page", %{conn: conn} do
+      {:ok, _lv, html} = live(conn, ~p"/users/log-in")
+
+      assert html =~ "Log in"
+      assert html =~ "Register"
+      assert html =~ "Log in with email"
+    end
+  end
+
+  describe "user login - magic link" do
+    test "sends magic link email when user exists", %{conn: conn} do
+      user = user_fixture()
+
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in")
+
+      {:ok, _lv, html} =
+        form(lv, "#login_form_magic", user: %{email: user.email})
+        |> render_submit()
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~ "If your email is in our system"
+
+      assert LearningPhoenix.Repo.get_by!(LearningPhoenix.Accounts.UserToken, user_id: user.id).context ==
+               "login"
+    end
+
+    test "does not disclose if user is registered", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in")
+
+      {:ok, _lv, html} =
+        form(lv, "#login_form_magic", user: %{email: "idonotexist@example.com"})
+        |> render_submit()
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~ "If your email is in our system"
+    end
+  end
+
+  describe "user login - password" do
+    test "redirects if user logs in with valid credentials", %{conn: conn} do
+      user = user_fixture() |> set_password()
+
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in")
+
+      form =
+        form(lv, "#login_form_password",
+          user: %{email: user.email, password: valid_user_password(), remember_me: true}
+        )
+
+      conn = submit_form(form, conn)
+
+      assert redirected_to(conn) == ~p"/"
+    end
+
+    test "redirects to login page with a flash error if credentials are invalid", %{
+      conn: conn
+    } do
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in")
+
+      form =
+        form(lv, "#login_form_password", user: %{email: "test@email.com", password: "123456"})
+
+      render_submit(form, %{user: %{remember_me: true}})
+
+      conn = follow_trigger_action(form, conn)
+      assert Phoenix.Flash.get(conn.assigns.flash, :error) == "Invalid email or password"
+      assert redirected_to(conn) == ~p"/users/log-in"
+    end
+  end
+
+  describe "login navigation" do
+    test "redirects to registration page when the Register button is clicked", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/log-in")
+
+      {:ok, _login_live, login_html} =
+        lv
+        |> element("main a", "Sign up")
+        |> render_click()
+        |> follow_redirect(conn, ~p"/users/register")
+
+      assert login_html =~ "Register"
+    end
+  end
+
+  describe "re-authentication (sudo mode)" do
+    setup %{conn: conn} do
+      user = user_fixture()
+      %{user: user, conn: log_in_user(conn, user)}
+    end
+
+    test "shows login page with email filled in", %{conn: conn, user: user} do
+      {:ok, _lv, html} = live(conn, ~p"/users/log-in")
+
+      assert html =~ "You need to reauthenticate"
+      refute html =~ "Register"
+      assert html =~ "Log in with email"
+
+      assert html =~
+               ~s(<input type="email" name="user[email]" id="login_form_magic_email" value="#{user.email}")
+    end
+  end
+end

test/learning_phoenix_web/live/user_live/registration_test.exs

@@ -0,0 +1,82 @@
+defmodule LearningPhoenixWeb.UserLive.RegistrationTest do
+  use LearningPhoenixWeb.ConnCase
+
+  import Phoenix.LiveViewTest
+  import LearningPhoenix.AccountsFixtures
+
+  describe "Registration page" do
+    test "renders registration page", %{conn: conn} do
+      {:ok, _lv, html} = live(conn, ~p"/users/register")
+
+      assert html =~ "Register"
+      assert html =~ "Log in"
+    end
+
+    test "redirects if already logged in", %{conn: conn} do
+      result =
+        conn
+        |> log_in_user(user_fixture())
+        |> live(~p"/users/register")
+        |> follow_redirect(conn, ~p"/")
+
+      assert {:ok, _conn} = result
+    end
+
+    test "renders errors for invalid data", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/register")
+
+      result =
+        lv
+        |> element("#registration_form")
+        |> render_change(user: %{"email" => "with spaces"})
+
+      assert result =~ "Register"
+      assert result =~ "must have the @ sign and no spaces"
+    end
+  end
+
+  describe "register user" do
+    test "creates account but does not log in", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/register")
+
+      email = unique_user_email()
+      form = form(lv, "#registration_form", user: valid_user_attributes(email: email))
+
+      {:ok, _lv, html} =
+        render_submit(form)
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert html =~
+               ~r/An email was sent to .*, please access it to confirm your account/
+    end
+
+    test "renders errors for duplicated email", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/register")
+
+      user = user_fixture(%{email: "test@email.com"})
+
+      result =
+        lv
+        |> form("#registration_form",
+          user: %{"email" => user.email}
+        )
+        |> render_submit()
+
+      assert result =~ "has already been taken"
+    end
+  end
+
+  describe "registration navigation" do
+    test "redirects to login page when the Log in button is clicked", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/register")
+
+      {:ok, _login_live, login_html} =
+        lv
+        |> element("main a", "Log in")
+        |> render_click()
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert login_html =~ "Log in"
+    end
+  end
+end

test/learning_phoenix_web/live/user_live/settings_test.exs

@@ -0,0 +1,212 @@
+defmodule LearningPhoenixWeb.UserLive.SettingsTest do
+  use LearningPhoenixWeb.ConnCase
+
+  alias LearningPhoenix.Accounts
+  import Phoenix.LiveViewTest
+  import LearningPhoenix.AccountsFixtures
+
+  describe "Settings page" do
+    test "renders settings page", %{conn: conn} do
+      {:ok, _lv, html} =
+        conn
+        |> log_in_user(user_fixture())
+        |> live(~p"/users/settings")
+
+      assert html =~ "Change Email"
+      assert html =~ "Save Password"
+    end
+
+    test "redirects if user is not logged in", %{conn: conn} do
+      assert {:error, redirect} = live(conn, ~p"/users/settings")
+
+      assert {:redirect, %{to: path, flash: flash}} = redirect
+      assert path == ~p"/users/log-in"
+      assert %{"error" => "You must log in to access this page."} = flash
+    end
+
+    test "redirects if user is not in sudo mode", %{conn: conn} do
+      {:ok, conn} =
+        conn
+        |> log_in_user(user_fixture(),
+          token_authenticated_at: DateTime.add(DateTime.utc_now(:second), -11, :minute)
+        )
+        |> live(~p"/users/settings")
+        |> follow_redirect(conn, ~p"/users/log-in")
+
+      assert conn.resp_body =~ "You must re-authenticate to access this page."
+    end
+  end
+
+  describe "update email form" do
+    setup %{conn: conn} do
+      user = user_fixture()
+      %{conn: log_in_user(conn, user), user: user}
+    end
+
+    test "updates the user email", %{conn: conn, user: user} do
+      new_email = unique_user_email()
+
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      result =
+        lv
+        |> form("#email_form", %{
+          "user" => %{"email" => new_email}
+        })
+        |> render_submit()
+
+      assert result =~ "A link to confirm your email"
+      assert Accounts.get_user_by_email(user.email)
+    end
+
+    test "renders errors with invalid data (phx-change)", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      result =
+        lv
+        |> element("#email_form")
+        |> render_change(%{
+          "action" => "update_email",
+          "user" => %{"email" => "with spaces"}
+        })
+
+      assert result =~ "Change Email"
+      assert result =~ "must have the @ sign and no spaces"
+    end
+
+    test "renders errors with invalid data (phx-submit)", %{conn: conn, user: user} do
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      result =
+        lv
+        |> form("#email_form", %{
+          "user" => %{"email" => user.email}
+        })
+        |> render_submit()
+
+      assert result =~ "Change Email"
+      assert result =~ "did not change"
+    end
+  end
+
+  describe "update password form" do
+    setup %{conn: conn} do
+      user = user_fixture()
+      %{conn: log_in_user(conn, user), user: user}
+    end
+
+    test "updates the user password", %{conn: conn, user: user} do
+      new_password = valid_user_password()
+
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      form =
+        form(lv, "#password_form", %{
+          "user" => %{
+            "email" => user.email,
+            "password" => new_password,
+            "password_confirmation" => new_password
+          }
+        })
+
+      render_submit(form)
+
+      new_password_conn = follow_trigger_action(form, conn)
+
+      assert redirected_to(new_password_conn) == ~p"/users/settings"
+
+      assert get_session(new_password_conn, :user_token) != get_session(conn, :user_token)
+
+      assert Phoenix.Flash.get(new_password_conn.assigns.flash, :info) =~
+               "Password updated successfully"
+
+      assert Accounts.get_user_by_email_and_password(user.email, new_password)
+    end
+
+    test "renders errors with invalid data (phx-change)", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      result =
+        lv
+        |> element("#password_form")
+        |> render_change(%{
+          "user" => %{
+            "password" => "too short",
+            "password_confirmation" => "does not match"
+          }
+        })
+
+      assert result =~ "Save Password"
+      assert result =~ "should be at least 12 character(s)"
+      assert result =~ "does not match password"
+    end
+
+    test "renders errors with invalid data (phx-submit)", %{conn: conn} do
+      {:ok, lv, _html} = live(conn, ~p"/users/settings")
+
+      result =
+        lv
+        |> form("#password_form", %{
+          "user" => %{
+            "password" => "too short",
+            "password_confirmation" => "does not match"
+          }
+        })
+        |> render_submit()
+
+      assert result =~ "Save Password"
+      assert result =~ "should be at least 12 character(s)"
+      assert result =~ "does not match password"
+    end
+  end
+
+  describe "confirm email" do
+    setup %{conn: conn} do
+      user = user_fixture()
+      email = unique_user_email()
+
+      token =
+        extract_user_token(fn url ->
+          Accounts.deliver_user_update_email_instructions(%{user | email: email}, user.email, url)
+        end)
+
+      %{conn: log_in_user(conn, user), token: token, email: email, user: user}
+    end
+
+    test "updates the user email once", %{conn: conn, user: user, token: token, email: email} do
+      {:error, redirect} = live(conn, ~p"/users/settings/confirm-email/#{token}")
+
+      assert {:live_redirect, %{to: path, flash: flash}} = redirect
+      assert path == ~p"/users/settings"
+      assert %{"info" => message} = flash
+      assert message == "Email changed successfully."
+      refute Accounts.get_user_by_email(user.email)
+      assert Accounts.get_user_by_email(email)
+
+      # use confirm token again
+      {:error, redirect} = live(conn, ~p"/users/settings/confirm-email/#{token}")
+      assert {:live_redirect, %{to: path, flash: flash}} = redirect
+      assert path == ~p"/users/settings"
+      assert %{"error" => message} = flash
+      assert message == "Email change link is invalid or it has expired."
+    end
+
+    test "does not update email with invalid token", %{conn: conn, user: user} do
+      {:error, redirect} = live(conn, ~p"/users/settings/confirm-email/oops")
+      assert {:live_redirect, %{to: path, flash: flash}} = redirect
+      assert path == ~p"/users/settings"
+      assert %{"error" => message} = flash
+      assert message == "Email change link is invalid or it has expired."
+      assert Accounts.get_user_by_email(user.email)
+    end
+
+    test "redirects if user is not logged in", %{token: token} do
+      conn = build_conn()
+      {:error, redirect} = live(conn, ~p"/users/settings/confirm-email/#{token}")
+      assert {:redirect, %{to: path, flash: flash}} = redirect
+      assert path == ~p"/users/log-in"
+      assert %{"error" => message} = flash
+      assert message == "You must log in to access this page."
+    end
+  end
+end

test/learning_phoenix_web/user_auth_test.exs

@@ -0,0 +1,390 @@
+defmodule LearningPhoenixWeb.UserAuthTest do
+  use LearningPhoenixWeb.ConnCase
+
+  alias Phoenix.LiveView
+  alias LearningPhoenix.Accounts
+  alias LearningPhoenix.Accounts.Scope
+  alias LearningPhoenixWeb.UserAuth
+
+  import LearningPhoenix.AccountsFixtures
+
+  @remember_me_cookie "_learning_phoenix_web_user_remember_me"
+  @remember_me_cookie_max_age 60 * 60 * 24 * 14
+
+  setup %{conn: conn} do
+    conn =
+      conn
+      |> Map.replace!(:secret_key_base, LearningPhoenixWeb.Endpoint.config(:secret_key_base))
+      |> init_test_session(%{})
+
+    %{user: %{user_fixture() | authenticated_at: DateTime.utc_now(:second)}, conn: conn}
+  end
+
+  describe "log_in_user/3" do
+    test "stores the user token in the session", %{conn: conn, user: user} do
+      conn = UserAuth.log_in_user(conn, user)
+      assert token = get_session(conn, :user_token)
+      assert get_session(conn, :live_socket_id) == "users_sessions:#{Base.url_encode64(token)}"
+      assert redirected_to(conn) == ~p"/"
+      assert Accounts.get_user_by_session_token(token)
+    end
+
+    test "clears everything previously stored in the session", %{conn: conn, user: user} do
+      conn = conn |> put_session(:to_be_removed, "value") |> UserAuth.log_in_user(user)
+      refute get_session(conn, :to_be_removed)
+    end
+
+    test "keeps session when re-authenticating", %{conn: conn, user: user} do
+      conn =
+        conn
+        |> assign(:current_scope, Scope.for_user(user))
+        |> put_session(:to_be_removed, "value")
+        |> UserAuth.log_in_user(user)
+
+      assert get_session(conn, :to_be_removed)
+    end
+
+    test "clears session when user does not match when re-authenticating", %{
+      conn: conn,
+      user: user
+    } do
+      other_user = user_fixture()
+
+      conn =
+        conn
+        |> assign(:current_scope, Scope.for_user(other_user))
+        |> put_session(:to_be_removed, "value")
+        |> UserAuth.log_in_user(user)
+
+      refute get_session(conn, :to_be_removed)
+    end
+
+    test "redirects to the configured path", %{conn: conn, user: user} do
+      conn = conn |> put_session(:user_return_to, "/hello") |> UserAuth.log_in_user(user)
+      assert redirected_to(conn) == "/hello"
+    end
+
+    test "writes a cookie if remember_me is configured", %{conn: conn, user: user} do
+      conn = conn |> fetch_cookies() |> UserAuth.log_in_user(user, %{"remember_me" => "true"})
+      assert get_session(conn, :user_token) == conn.cookies[@remember_me_cookie]
+      assert get_session(conn, :user_remember_me) == true
+
+      assert %{value: signed_token, max_age: max_age} = conn.resp_cookies[@remember_me_cookie]
+      assert signed_token != get_session(conn, :user_token)
+      assert max_age == @remember_me_cookie_max_age
+    end
+
+    test "redirects to settings when user is already logged in", %{conn: conn, user: user} do
+      conn =
+        conn
+        |> assign(:current_scope, Scope.for_user(user))
+        |> UserAuth.log_in_user(user)
+
+      assert redirected_to(conn) == ~p"/users/settings"
+    end
+
+    test "writes a cookie if remember_me was set in previous session", %{conn: conn, user: user} do
+      conn = conn |> fetch_cookies() |> UserAuth.log_in_user(user, %{"remember_me" => "true"})
+      assert get_session(conn, :user_token) == conn.cookies[@remember_me_cookie]
+      assert get_session(conn, :user_remember_me) == true
+
+      conn =
+        conn
+        |> recycle()
+        |> Map.replace!(:secret_key_base, LearningPhoenixWeb.Endpoint.config(:secret_key_base))
+        |> fetch_cookies()
+        |> init_test_session(%{user_remember_me: true})
+
+      # the conn is already logged in and has the remember_me cookie set,
+      # now we log in again and even without explicitly setting remember_me,
+      # the cookie should be set again
+      conn = conn |> UserAuth.log_in_user(user, %{})
+      assert %{value: signed_token, max_age: max_age} = conn.resp_cookies[@remember_me_cookie]
+      assert signed_token != get_session(conn, :user_token)
+      assert max_age == @remember_me_cookie_max_age
+      assert get_session(conn, :user_remember_me) == true
+    end
+  end
+
+  describe "logout_user/1" do
+    test "erases session and cookies", %{conn: conn, user: user} do
+      user_token = Accounts.generate_user_session_token(user)
+
+      conn =
+        conn
+        |> put_session(:user_token, user_token)
+        |> put_req_cookie(@remember_me_cookie, user_token)
+        |> fetch_cookies()
+        |> UserAuth.log_out_user()
+
+      refute get_session(conn, :user_token)
+      refute conn.cookies[@remember_me_cookie]
+      assert %{max_age: 0} = conn.resp_cookies[@remember_me_cookie]
+      assert redirected_to(conn) == ~p"/"
+      refute Accounts.get_user_by_session_token(user_token)
+    end
+
+    test "broadcasts to the given live_socket_id", %{conn: conn} do
+      live_socket_id = "users_sessions:abcdef-token"
+      LearningPhoenixWeb.Endpoint.subscribe(live_socket_id)
+
+      conn
+      |> put_session(:live_socket_id, live_socket_id)
+      |> UserAuth.log_out_user()
+
+      assert_receive %Phoenix.Socket.Broadcast{event: "disconnect", topic: ^live_socket_id}
+    end
+
+    test "works even if user is already logged out", %{conn: conn} do
+      conn = conn |> fetch_cookies() |> UserAuth.log_out_user()
+      refute get_session(conn, :user_token)
+      assert %{max_age: 0} = conn.resp_cookies[@remember_me_cookie]
+      assert redirected_to(conn) == ~p"/"
+    end
+  end
+
+  describe "fetch_current_scope_for_user/2" do
+    test "authenticates user from session", %{conn: conn, user: user} do
+      user_token = Accounts.generate_user_session_token(user)
+
+      conn =
+        conn |> put_session(:user_token, user_token) |> UserAuth.fetch_current_scope_for_user([])
+
+      assert conn.assigns.current_scope.user.id == user.id
+      assert conn.assigns.current_scope.user.authenticated_at == user.authenticated_at
+      assert get_session(conn, :user_token) == user_token
+    end
+
+    test "authenticates user from cookies", %{conn: conn, user: user} do
+      logged_in_conn =
+        conn |> fetch_cookies() |> UserAuth.log_in_user(user, %{"remember_me" => "true"})
+
+      user_token = logged_in_conn.cookies[@remember_me_cookie]
+      %{value: signed_token} = logged_in_conn.resp_cookies[@remember_me_cookie]
+
+      conn =
+        conn
+        |> put_req_cookie(@remember_me_cookie, signed_token)
+        |> UserAuth.fetch_current_scope_for_user([])
+
+      assert conn.assigns.current_scope.user.id == user.id
+      assert conn.assigns.current_scope.user.authenticated_at == user.authenticated_at
+      assert get_session(conn, :user_token) == user_token
+      assert get_session(conn, :user_remember_me)
+
+      assert get_session(conn, :live_socket_id) ==
+               "users_sessions:#{Base.url_encode64(user_token)}"
+    end
+
+    test "does not authenticate if data is missing", %{conn: conn, user: user} do
+      _ = Accounts.generate_user_session_token(user)
+      conn = UserAuth.fetch_current_scope_for_user(conn, [])
+      refute get_session(conn, :user_token)
+      refute conn.assigns.current_scope
+    end
+
+    test "reissues a new token after a few days and refreshes cookie", %{conn: conn, user: user} do
+      logged_in_conn =
+        conn |> fetch_cookies() |> UserAuth.log_in_user(user, %{"remember_me" => "true"})
+
+      token = logged_in_conn.cookies[@remember_me_cookie]
+      %{value: signed_token} = logged_in_conn.resp_cookies[@remember_me_cookie]
+
+      offset_user_token(token, -10, :day)
+      {user, _} = Accounts.get_user_by_session_token(token)
+
+      conn =
+        conn
+        |> put_session(:user_token, token)
+        |> put_session(:user_remember_me, true)
+        |> put_req_cookie(@remember_me_cookie, signed_token)
+        |> UserAuth.fetch_current_scope_for_user([])
+
+      assert conn.assigns.current_scope.user.id == user.id
+      assert conn.assigns.current_scope.user.authenticated_at == user.authenticated_at
+      assert new_token = get_session(conn, :user_token)
+      assert new_token != token
+      assert %{value: new_signed_token, max_age: max_age} = conn.resp_cookies[@remember_me_cookie]
+      assert new_signed_token != signed_token
+      assert max_age == @remember_me_cookie_max_age
+    end
+  end
+
+  describe "on_mount :mount_current_scope" do
+    setup %{conn: conn} do
+      %{conn: UserAuth.fetch_current_scope_for_user(conn, [])}
+    end
+
+    test "assigns current_scope based on a valid user_token", %{conn: conn, user: user} do
+      user_token = Accounts.generate_user_session_token(user)
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      {:cont, updated_socket} =
+        UserAuth.on_mount(:mount_current_scope, %{}, session, %LiveView.Socket{})
+
+      assert updated_socket.assigns.current_scope.user.id == user.id
+    end
+
+    test "assigns nil to current_scope assign if there isn't a valid user_token", %{conn: conn} do
+      user_token = "invalid_token"
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      {:cont, updated_socket} =
+        UserAuth.on_mount(:mount_current_scope, %{}, session, %LiveView.Socket{})
+
+      assert updated_socket.assigns.current_scope == nil
+    end
+
+    test "assigns nil to current_scope assign if there isn't a user_token", %{conn: conn} do
+      session = conn |> get_session()
+
+      {:cont, updated_socket} =
+        UserAuth.on_mount(:mount_current_scope, %{}, session, %LiveView.Socket{})
+
+      assert updated_socket.assigns.current_scope == nil
+    end
+  end
+
+  describe "on_mount :require_authenticated" do
+    test "authenticates current_scope based on a valid user_token", %{conn: conn, user: user} do
+      user_token = Accounts.generate_user_session_token(user)
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      {:cont, updated_socket} =
+        UserAuth.on_mount(:require_authenticated, %{}, session, %LiveView.Socket{})
+
+      assert updated_socket.assigns.current_scope.user.id == user.id
+    end
+
+    test "redirects to login page if there isn't a valid user_token", %{conn: conn} do
+      user_token = "invalid_token"
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      socket = %LiveView.Socket{
+        endpoint: LearningPhoenixWeb.Endpoint,
+        assigns: %{__changed__: %{}, flash: %{}}
+      }
+
+      {:halt, updated_socket} = UserAuth.on_mount(:require_authenticated, %{}, session, socket)
+      assert updated_socket.assigns.current_scope == nil
+    end
+
+    test "redirects to login page if there isn't a user_token", %{conn: conn} do
+      session = conn |> get_session()
+
+      socket = %LiveView.Socket{
+        endpoint: LearningPhoenixWeb.Endpoint,
+        assigns: %{__changed__: %{}, flash: %{}}
+      }
+
+      {:halt, updated_socket} = UserAuth.on_mount(:require_authenticated, %{}, session, socket)
+      assert updated_socket.assigns.current_scope == nil
+    end
+  end
+
+  describe "on_mount :require_sudo_mode" do
+    test "allows users that have authenticated in the last 10 minutes", %{conn: conn, user: user} do
+      user_token = Accounts.generate_user_session_token(user)
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      socket = %LiveView.Socket{
+        endpoint: LearningPhoenixWeb.Endpoint,
+        assigns: %{__changed__: %{}, flash: %{}}
+      }
+
+      assert {:cont, _updated_socket} =
+               UserAuth.on_mount(:require_sudo_mode, %{}, session, socket)
+    end
+
+    test "redirects when authentication is too old", %{conn: conn, user: user} do
+      eleven_minutes_ago = DateTime.utc_now(:second) |> DateTime.add(-11, :minute)
+      user = %{user | authenticated_at: eleven_minutes_ago}
+      user_token = Accounts.generate_user_session_token(user)
+      {user, token_inserted_at} = Accounts.get_user_by_session_token(user_token)
+      assert DateTime.compare(token_inserted_at, user.authenticated_at) == :gt
+      session = conn |> put_session(:user_token, user_token) |> get_session()
+
+      socket = %LiveView.Socket{
+        endpoint: LearningPhoenixWeb.Endpoint,
+        assigns: %{__changed__: %{}, flash: %{}}
+      }
+
+      assert {:halt, _updated_socket} =
+               UserAuth.on_mount(:require_sudo_mode, %{}, session, socket)
+    end
+  end
+
+  describe "require_authenticated_user/2" do
+    setup %{conn: conn} do
+      %{conn: UserAuth.fetch_current_scope_for_user(conn, [])}
+    end
+
+    test "redirects if user is not authenticated", %{conn: conn} do
+      conn = conn |> fetch_flash() |> UserAuth.require_authenticated_user([])
+      assert conn.halted
+
+      assert redirected_to(conn) == ~p"/users/log-in"
+
+      assert Phoenix.Flash.get(conn.assigns.flash, :error) ==
+               "You must log in to access this page."
+    end
+
+    test "stores the path to redirect to on GET", %{conn: conn} do
+      halted_conn =
+        %{conn | path_info: ["foo"], query_string: ""}
+        |> fetch_flash()
+        |> UserAuth.require_authenticated_user([])
+
+      assert halted_conn.halted
+      assert get_session(halted_conn, :user_return_to) == "/foo"
+
+      halted_conn =
+        %{conn | path_info: ["foo"], query_string: "bar=baz"}
+        |> fetch_flash()
+        |> UserAuth.require_authenticated_user([])
+
+      assert halted_conn.halted
+      assert get_session(halted_conn, :user_return_to) == "/foo?bar=baz"
+
+      halted_conn =
+        %{conn | path_info: ["foo"], query_string: "bar", method: "POST"}
+        |> fetch_flash()
+        |> UserAuth.require_authenticated_user([])
+
+      assert halted_conn.halted
+      refute get_session(halted_conn, :user_return_to)
+    end
+
+    test "does not redirect if user is authenticated", %{conn: conn, user: user} do
+      conn =
+        conn
+        |> assign(:current_scope, Scope.for_user(user))
+        |> UserAuth.require_authenticated_user([])
+
+      refute conn.halted
+      refute conn.status
+    end
+  end
+
+  describe "disconnect_sessions/1" do
+    test "broadcasts disconnect messages for each token" do
+      tokens = [%{token: "token1"}, %{token: "token2"}]
+
+      for %{token: token} <- tokens do
+        LearningPhoenixWeb.Endpoint.subscribe("users_sessions:#{Base.url_encode64(token)}")
+      end
+
+      UserAuth.disconnect_sessions(tokens)
+
+      assert_receive %Phoenix.Socket.Broadcast{
+        event: "disconnect",
+        topic: "users_sessions:dG9rZW4x"
+      }
+
+      assert_receive %Phoenix.Socket.Broadcast{
+        event: "disconnect",
+        topic: "users_sessions:dG9rZW4y"
+      }
+    end
+  end
+end