Add a test for the email normalization

Author: codergeek121

railties/lib/rails/generators/test_unit/authentication/templates/test/models/user_test.rb.tt

@@ -1,7 +1,8 @@
 require "test_helper"
 
 class UserTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  test "downcases and strips email_address" do
+    user = User.new(email_address: " [email protected] ")
+    assert_equal("[email protected]", user.email_address)
+  end
 end