### Question:
AbstractContact implements IContact { public void setNewbie(boolean newbie) { this.newbie = newbie; }  boolean isUnknown(); void setUnknown(boolean unknown); boolean isNewbie(); void setNewbie(boolean newbie); IMessage getLastMessage(); void setLastMessage(IMessage lastMessage); int getUnread(); void setUnread(int unread); void clearUnRead(); void increaceUnRead(); int compareTo(AbstractContact that);  }### Answer:
@Test public void testSetNewbie() { contact.setNewbie(true); assertEquals(true, contact.isNewbie()); }