@Test public void testIteratorClose() throws Exception { // make more than 1 page. Previous closed iterator would start fetching // from page 1. HeapFile twoPageFile = SystemTestUtil.createRandomHeapFile(2, 520, null, null); DbFileIterator it = twoPageFile.iterator(tid); it.open(); assertTrue(it.hasNext()); it.close(); try { it.next(); fail("expected exception"); } catch (NoSuchElementException e) { } // close twice is harmless it.close(); }
@Test public void testIteratorBasic() throws Exception { HeapFile smallFile = SystemTestUtil.createRandomHeapFile(2, 3, null, null); DbFileIterator it = smallFile.iterator(tid); // Not open yet assertFalse(it.hasNext()); try { it.next(); fail("expected exception"); } catch (NoSuchElementException e) { } it.open(); int count = 0; while (it.hasNext()) { System.out.println(count); assertNotNull(it.next()); count += 1; } assertEquals(3, count); it.close(); }