()
| 100 | * isEmpty is true before add, false after |
| 101 | */ |
| 102 | public void testEmpty() { |
| 103 | NavigableSet q = set0(); |
| 104 | assertTrue(q.isEmpty()); |
| 105 | q.add(new Integer(1)); |
| 106 | assertFalse(q.isEmpty()); |
| 107 | q.add(new Integer(2)); |
| 108 | q.pollFirst(); |
| 109 | q.pollFirst(); |
| 110 | assertTrue(q.isEmpty()); |
| 111 | } |
| 112 | |
| 113 | /* |
| 114 | * size changes when elements added and removed |