assertEquals("1234567890", documentHelper.getDigest(responseData, "1234567890", dataMap, 10));
        assertEquals("123456789", documentHelper.getDigest(responseData, "123456789", dataMap, 10));
        assertEquals("1234567", documentHelper.getDigest(responseData, "1234567", dataMap, 10));
        assertEquals("1", documentHelper.getDigest(responseData, "1", dataMap, 10));

        text = "123";
        queries = new String[] { "123", "456" };
        assertEquals("<strong>123</strong>", viewHelper.replaceHighlightQueries(text, queries));

        text = "123456";
        queries = new String[] { "123", "456" };
        assertEquals("<strong>123</strong><strong>456</strong>", viewHelper.replaceHighlightQueries(text, queries));

        text = "a123b456c";

        assertEquals("@fess.codelibs.local", fessConfig.getLdapSecurityPrincipal(""));
        assertEquals("123456789@fess.codelibs.local", fessConfig.getLdapSecurityPrincipal("123456789"));
        assertEquals("1234567890@fess.codelibs.local", fessConfig.getLdapSecurityPrincipal("1234567890"));
        assertEquals("1234567890@fess.codelibs.local", fessConfig.getLdapSecurityPrincipal("12345678901"));
    }

        assertEquals(66L, MemoryUtil.sizeOf("1234567890"));
        assertEquals(76L, MemoryUtil.sizeOf("12345678901234567890"));
        assertEquals(66L, MemoryUtil.sizeOf(new String[] { "1234567890" }));
        assertEquals(132L, MemoryUtil.sizeOf(new String[] { "1234567890", "1234567890" }));
        assertEquals(132L, MemoryUtil.sizeOf(Lists.asList("1234567890", new String[] { "1234567890" })));