t.setObjId(almostEmptyCommitId);
t.setType("commit");
t.setTag("test022");
t.setAuthor(new PersonIdent(author, 1154236443000L, -4 * 60));
t.setMessage("test022 tagged\n");
t.tag();
assertEquals("0ce2ebdb36076ef0b38adbe077a07d43b43e3807", t.getTagId().name());
Tag mapTag = db.mapTag("test022");
assertEquals("commit", mapTag.getType());
assertEquals("test022 tagged\n", mapTag.getMessage());