Add the logout for the API.

test/support/factories/UserFactory.ex

@@ -0,0 +1,10 @@
+defmodule LinkShortener.Factories.UserFactory do
+  use ExMachina
+
+  def user_factory do
+    %{
+      email: sequence(:email, &"user-#{&1}@mail.com"),
+      password: "some password"
+    }
+  end
+end

test/support/fixtures/accounts_fixtures.ex

@@ -7,6 +7,7 @@ defmodule LinkShortener.AccountsFixtures do
   alias LinkShortener.Accounts
   alias LinkShortener.Accounts.User
   alias LinkShortenerWeb.Auth.Guardian
+  alias LinkShortener.Factories.UserFactory
 
   @doc """
   Generate a unique user email.
@@ -31,10 +32,7 @@ defmodule LinkShortener.AccountsFixtures do
   end
 
   def user_token_fixture(attrs \\ %{}) do
-    user_params = %{
-      email: "user@mail.com",
-      password: "some password"
-    }
+    user_params = UserFactory.user_factory()
 
     {:ok, %User{} = user} = Accounts.register_user(user_params)
     {:ok, token, _claims} = Guardian.encode_and_sign(user)