From ca4eaf6f54fb62c23b277ef5d710a62cc7c9a37f Mon Sep 17 00:00:00 2001
From: Willem van den Ende <willem@qwan.eu>
Date: Sun, 14 Sep 2025 20:19:18 +0100
Subject: [PATCH] Add workaround for failing doctest

on_exit in test does not work properly as teardown - the variable is
unset, but doctest apparently runs after tests and it is not cleaned up
---
 lib/basic_signup_whitelist.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/basic_signup_whitelist.ex b/lib/basic_signup_whitelist.ex
index 45c05e5..4a02d1f 100644
--- a/lib/basic_signup_whitelist.ex
+++ b/lib/basic_signup_whitelist.ex
@@ -18,6 +18,7 @@ defmodule BasicSignupWhitelist do
 
   ## Examples
 
+      iex> System.delete_env("SIGNUP_ALLOWED_EMAILS")
       iex> BasicSignupWhitelist.mail_whitelisted("joe@example.com")
       false