@Test
  public void html() throws Exception {
    String subject = "html";
    buildSMTPAppender(subject, SYNCHRONOUS);
    smtpAppender.setAsynchronousSending(false);
    smtpAppender.setLayout(buildHTMLLayout());
    smtpAppender.start();
    logger.addAppender(smtpAppender);
    logger.debug("html");
    logger.error("en error", new Exception("an exception"));

    MimeMultipart mp = verifyAndExtractMimeMultipart(subject);

    // verifyAndExtractMimeMultipart strict adherence to xhtml1-strict.dtd
    SAXReader reader = new SAXReader();
    reader.setValidation(true);
    reader.setEntityResolver(new XHTMLEntityResolver());
    byte[] messageBytes = getAsByteArray(mp.getBodyPart(0).getInputStream());
    ByteArrayInputStream bais = new ByteArrayInputStream(messageBytes);
    try {
      reader.read(bais);
    } catch (DocumentException de) {
      System.out.println("incoming message:");
      System.out.println(new String(messageBytes));
      throw de;
    }
  }
 void buildSMTPAppender(String subject, boolean synchronicity) throws Exception {
   smtpAppender = new SMTPAppender();
   smtpAppender.setContext(loggerContext);
   smtpAppender.setName("smtp");
   smtpAppender.setFrom("*****@*****.**");
   smtpAppender.setSMTPHost("localhost");
   smtpAppender.setSMTPPort(port);
   smtpAppender.setSubject(subject);
   smtpAppender.addTo("*****@*****.**");
   smtpAppender.setAsynchronousSending(synchronicity);
 }
 private void buildSMTPAppender(int port, boolean synchronicity) throws Exception {
   smtpAppender = new SMTPAppender();
   smtpAppender.setContext(lc);
   smtpAppender.setName("smtp");
   smtpAppender.setFrom("*****@*****.**");
   smtpAppender.setSMTPHost("localhost");
   smtpAppender.setSMTPPort(port);
   smtpAppender.setSubject(TEST_SUBJECT);
   smtpAppender.addTo("*****@*****.**");
   smtpAppender.setAsynchronousSending(synchronicity);
   // smtpAppender.start();
 }
  @Test
  public void html() throws Exception {
    buildSMTPAppender(smtpServer.getSmtp().getPort(), SYNCHRONOUS);
    smtpAppender.setAsynchronousSending(false);
    smtpAppender.setLayout(buildHTMLLayout(lc));
    smtpAppender.start();
    logger.addAppender(smtpAppender);
    logger.debug("hello");
    logger.error("an error", new Exception("an exception"));

    MimeMultipart mp = verify(smtpServer, TEST_SUBJECT);

    // verify strict adherence to xhtml1-strict.dtd
    SAXReader reader = new SAXReader();
    reader.setValidation(true);
    reader.setEntityResolver(new XHTMLEntityResolver());
    reader.read(mp.getBodyPart(0).getInputStream());
  }
  @Test
  public void LBCLASSIC_104() throws Exception {
    buildSMTPAppender(smtpServer.getSmtp().getPort(), SYNCHRONOUS);
    smtpAppender.setAsynchronousSending(false);
    smtpAppender.setLayout(buildPatternLayout(lc, DEFAULT_PATTERN));
    smtpAppender.start();
    logger.addAppender(smtpAppender);
    MDC.put("key", "val");
    logger.debug("hello");
    MDC.clear();
    logger.error("an error", new Exception("an exception"));

    MimeMultipart mp = verify(smtpServer, TEST_SUBJECT);
    String body = GreenMailUtil.getBody(mp.getBodyPart(0));
    assertTrue("missing HEADER in body", body.startsWith(HEADER.trim()));
    assertTrue("missing MDC in body", body.contains("key=val"));
    assertTrue("missing FOOTER in body", body.endsWith(FOOTER.trim()));
  }
  // lost MDC
  @Test
  public void LBCLASSIC_104() throws Exception {
    String subject = "LBCLASSIC_104";
    buildSMTPAppender(subject, SYNCHRONOUS);
    smtpAppender.setAsynchronousSending(false);
    smtpAppender.setLayout(buildPatternLayout(DEFAULT_PATTERN));
    smtpAppender.start();
    logger.addAppender(smtpAppender);
    MDC.put("key", "val");
    logger.debug("hello");
    MDC.clear();
    logger.error("en error", new Exception("test"));

    MimeMultipart mp = verifyAndExtractMimeMultipart(subject);
    String body = GreenMailUtil.getBody(mp.getBodyPart(0));
    assertTrue("missing HEADER in body", body.startsWith(HEADER.trim()));
    assertTrue("missing MDC in body", body.contains("key=val"));
    assertTrue("missing FOOTER in body", body.endsWith(FOOTER.trim()));
  }