rename environment variable

test/basic_signup_whitelist_test.exs

@@ -3,21 +3,21 @@ defmodule BasicSignupWhitelistTest do
   doctest BasicSignupWhitelist
 
   defp allow_signups_for(whitelist) do
-    System.put_env("SIGNUP_ALLOWED_EMAILS", whitelist)
+    System.put_env("SIGNUP_ALLOWLIST_EMAILS", whitelist)
   end
 
   describe "setup in describe block" do
     setup do
       on_exit(fn ->
         # resetting values did not work, so 'just' set it to the effect without this module configured.
-        System.put_env("SIGNUP_ALLOWED_EMAILS", "*")
+        System.put_env("SIGNUP_ALLOWLIST_EMAILS", "*")
       end)
 
       :ok
     end
 
     test "When not set, not whitelisted" do
-      System.delete_env("SIGNUP_ALLOWED_EMAILS")
+      System.delete_env("SIGNUP_ALLOWLIST_EMAILS")
       refute BasicSignupWhitelist.mail_whitelisted("joe@example.com")
     end