public static final String TO = "To: anyuser <any@user>";
public void testHeader() {
Header header = new Header();
header.addField(Field.parse(SUBJECT));
header.addField(Field.parse(TO));
assertNotNull("Subject found", header.getField("Subject"));
assertNotNull("To found", header.getField("To"));
assertEquals("Headers equals", SUBJECT + "\r\n" + TO + "\r\n", header