mail not whitelisted when not set

lib/basic_signup_whitelist.ex

@@ -4,15 +4,15 @@ defmodule BasicSignupWhitelist do
   """
 
   @doc """
-  Hello world.
+  false
 
   ## Examples
 
-      iex> BasicSignupWhitelist.hello()
+      iex> BasicSignupWhitelist.mail_whitelisted("joe@example.com")
-      :world
+      false
 
   """
-  def hello do
+  def mail_whitelisted(_email) do
-    :world
+    false
   end
 end

test/basic_signup_whitelist_test.exs

@@ -2,7 +2,7 @@ defmodule BasicSignupWhitelistTest do
   use ExUnit.Case
   doctest BasicSignupWhitelist
 
-  test "greets the world" do
+  test "When not set, not whitelisted" do
-    assert BasicSignupWhitelist.hello() == :world
+    assert BasicSignupWhitelist.mail_whitelisted("joe@example.com") == false
   end
 end