@Test
 public void profileCanBeSetUsingEmptyString() {
   settings.setProfile("");
   assertFalse(settings.supportsPd());
   assertNotNull(settings.profile());
 }
 @Test
 public void profileCanBeSet() {
   OperaProfile profile = new OperaProfile();
   settings.setProfile(profile);
   assertEquals(profile, settings.profile());
 }
 @Test
 public void profileCanBeSetUsingNull() {
   settings.setProfile((String) null);
   assertNotNull(settings.profile());
 }
 @Test
 public void profileIsOperaProfileObject() {
   assertNotNull(settings.profile());
 }