Update the phoenix version and starting migration the project.

test/support/conn_case.ex

@@ -19,15 +19,15 @@ defmodule LinkShortenerWeb.ConnCase do
 
   using do
     quote do
+      # The default endpoint for testing
+      @endpoint LinkShortenerWeb.Endpoint
+
+      use LinkShortenerWeb, :verified_routes
+
       # Import conveniences for testing with connections
       import Plug.Conn
       import Phoenix.ConnTest
       import LinkShortenerWeb.ConnCase
-
-      alias LinkShortenerWeb.Router.Helpers, as: Routes
-
-      # The default endpoint for testing
-      @endpoint LinkShortenerWeb.Endpoint
     end
   end
 
@@ -35,30 +35,4 @@ defmodule LinkShortenerWeb.ConnCase do
     LinkShortener.DataCase.setup_sandbox(tags)
     {:ok, conn: Phoenix.ConnTest.build_conn()}
   end
-
-  @doc """
-  Setup helper that registers and logs in users.
-
-      setup :register_and_log_in_user
-
-  It stores an updated connection and a registered user in the
-  test context.
-  """
-  def register_and_log_in_user(%{conn: conn}) do
-    user = LinkShortener.AccountsFixtures.user_fixture()
-    %{conn: log_in_user(conn, user), user: user}
-  end
-
-  @doc """
-  Logs the given `user` into the `conn`.
-
-  It returns an updated `conn`.
-  """
-  def log_in_user(conn, user) do
-    token = LinkShortener.Accounts.generate_user_session_token(user)
-
-    conn
-    |> Phoenix.ConnTest.init_test_session(%{})
-    |> Plug.Conn.put_session(:user_token, token)
-  end
 end

test/support/fixtures/accounts_fixtures.ex

@@ -1,50 +0,0 @@
-defmodule LinkShortener.AccountsFixtures do
-  @moduledoc """
-  This module defines test helpers for creating
-  entities via the `LinkShortener.Accounts` context.
-  """
-
-  alias LinkShortener.Accounts
-  alias LinkShortener.Accounts.User
-  alias LinkShortenerWeb.Auth.Guardian
-
-  @doc """
-  Generate a unique user email.
-  """
-  def unique_user_email, do: "user#{System.unique_integer()}@example.com"
-  def valid_user_password, do: "hello world!"
-
-  def valid_user_attributes(attrs \\ %{}) do
-    Enum.into(attrs, %{
-      email: unique_user_email(),
-      password: valid_user_password()
-    })
-  end
-
-  def user_fixture(attrs \\ %{}) do
-    {:ok, user} =
-      attrs
-      |> valid_user_attributes()
-      |> LinkShortener.Accounts.register_user()
-
-    user
-  end
-
-  def user_token_fixture(attrs \\ %{}) do
-    user_params = %{
-      email: "user@mail.com",
-      password: "some password"
-    }
-
-    {:ok, %User{} = user} = Accounts.register_user(user_params)
-    {:ok, token, _claims} = Guardian.encode_and_sign(user)
-
-    token
-  end
-
-  def extract_user_token(fun) do
-    {:ok, captured_email} = fun.(&"[TOKEN]#{&1}[TOKEN]")
-    [_, token | _] = String.split(captured_email.text_body, "[TOKEN]")
-    token
-  end
-end