MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();

        // Should return early without doing anything
        try {
            notificationHelper.sendToGoogleChat(null, discloser);
        } catch (Exception e) {
            fail("sendToGoogleChat() should not throw an exception with blank URLs: " + e.getMessage());
        }
    }

    public void test_sendToGoogleChat_withNullWebhookUrls() {