Add the create_user to the UserFactory.

test/support/factories/UserFactory.ex

@@ -7,4 +7,9 @@ defmodule LinkShortener.Factories.UserFactory do
       password: "some password"
     }
   end
+
+  def create_user() do
+    user_attrs_factory()
+    |> LinkShortener.AccountsFixtures.user_fixture()
+  end
 end