}

    @Test
    public void test_escapeHtml_allSpecialChars() {
        assertEquals("&amp;&lt;&gt;&quot;&#39;", chatClient.testEscapeHtml("&<>\"'"));
    }

    @Test
    public void test_escapeHtml_scriptTag() {
        assertEquals("&lt;script&gt;alert(&#39;xss&#39;)&lt;/script&gt;", chatClient.testEscapeHtml("<script>alert('xss')</script>"));
    }

    // ========== buildGoUrl tests ==========

    @Test