/** clear removes all elements */
public void testDescendingClear() {
NavigableSet q = populatedSet(SIZE);
q.clear();
assertTrue(q.isEmpty());
assertEquals(0, q.size());
assertTrue(q.add(new Integer(1)));
assertFalse(q.isEmpty());
q.clear();
assertTrue(q.isEmpty());
}
@Test
public void WriteDBInt_lastKey_set_middle() {
int numberOfRecords = 1000;
/* Creates connections to MapDB */
DB db1 = DBMaker.memoryDB().transactionDisable().make();
/* Creates maps */
NavigableSet<Integer> map1 = db1.treeSet("column1");
/* Inserts initial values in maps */
for (int i = 0; i < numberOfRecords; i++) {
map1.add(i);
}
assertEquals((Object) (numberOfRecords - 1), map1.last());
map1.clear();
/* Inserts some values in maps */
for (int i = 100; i < 110; i++) {
map1.add(i);
}
assertEquals(10, map1.size());
assertFalse(map1.isEmpty());
assertEquals((Object) 109, map1.last());
assertEquals((Object) 100, map1.first());
}