code: @Test public void testDoSetServerParameter() throws Exception {
    Mail mail=MailImplTestHelper.getMailImplWithDemoContent();
    MultiPartEmail multiPartEmail=commonsmailHelper.createMultiPartEmailWithContent(mail);
    commonsmailHelper.doSetServerParameter(multiPartEmail,"mail.superserver.com",33,true,"username","password",true);
    assertEquals("33",multiPartEmail.getSmtpPort());
    assertEquals("mail.superserver.com",multiPartEmail.getHostName());
    assertEquals(true,multiPartEmail.getMailSession().getDebug());
  }
  