value = FessFunctions.formatCode("L", "prettyprint", "text/plain", code);
        assertEquals("<pre class=\"prettyprint linenums:10\">\nccc</pre>", value);
    }

    @Test
    public void test_maskEmail() {
        String value;

        value = FessFunctions.maskEmail(null);
        assertEquals("", value);

        value = FessFunctions.maskEmail("");
        assertEquals("", value);