Examples with LinkedTransferQueue java.util.concurrent.LinkedTransferQueue used on opensource projects

Example 1 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project mapdb by jankotek.

the class LinkedTransferQueueTest method testDrainToN.

/**
     * drainTo(c, n) empties first min(n, size) elements of queue into c
     */
public void testDrainToN() {
    LinkedTransferQueue q = new LinkedTransferQueue();
    for (int i = 0; i < SIZE + 2; ++i) {
        for (int j = 0; j < SIZE; j++) {
            assertTrue(q.offer(j));
        }
        ArrayList l = new ArrayList();
        q.drainTo(l, i);
        int k = (i < SIZE) ? i : SIZE;
        assertEquals(k, l.size());
        assertEquals(SIZE - k, q.size());
        for (int j = 0; j < k; ++j) assertEquals(j, l.get(j));
        do {
        } while (q.poll() != null);
    }
}

Example 2 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project mapdb by jankotek.

the class LinkedTransferQueueTest method testAddAll5.

/**
     * Queue contains all elements, in traversal order, of successful addAll
     */
public void testAddAll5() {
    Integer[] empty = new Integer[0];
    Integer[] ints = new Integer[SIZE];
    for (int i = 0; i < SIZE; ++i) {
        ints[i] = i;
    }
    LinkedTransferQueue q = new LinkedTransferQueue();
    assertFalse(q.addAll(Arrays.asList(empty)));
    assertTrue(q.addAll(Arrays.asList(ints)));
    for (int i = 0; i < SIZE; ++i) {
        assertEquals(ints[i], q.poll());
    }
}

Example 3 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project mapdb by jankotek.

the class LinkedTransferQueueTest method testWeaklyConsistentIteration.

/**
     * Modifications do not cause iterators to fail
     */
public void testWeaklyConsistentIteration() {
    final LinkedTransferQueue q = new LinkedTransferQueue();
    q.add(one);
    q.add(two);
    q.add(three);
    for (Iterator it = q.iterator(); it.hasNext(); ) {
        q.remove();
        it.next();
    }
    assertEquals(0, q.size());
}

Example 4 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project mapdb by jankotek.

the class LinkedTransferQueueTest method testToString.

/**
     * toString contains toStrings of elements
     */
public void testToString() {
    LinkedTransferQueue q = populatedQueue(SIZE);
    String s = q.toString();
    for (int i = 0; i < SIZE; ++i) {
        assertTrue(s.contains(String.valueOf(i)));
    }
}

Example 5 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project mapdb by jankotek.

the class LinkedTransferQueueTest method testClear.

/**
     * clear removes all elements
     */
public void testClear() throws InterruptedException {
    LinkedTransferQueue q = populatedQueue(SIZE);
    q.clear();
    checkEmpty(q);
    assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
    q.add(one);
    assertFalse(q.isEmpty());
    assertEquals(1, q.size());
    assertTrue(q.contains(one));
    q.clear();
    checkEmpty(q);
}