Examples with ArrayDeque java.util.ArrayDeque used on opensource projects

Example 41 with ArrayDeque

use of java.util.ArrayDeque in project mapdb by jankotek.

the class ArrayDequeTest method testOfferFirst.

/**
     * offerFirst(x) succeeds
     */
public void testOfferFirst() {
    ArrayDeque q = new ArrayDeque();
    assertTrue(q.offerFirst(zero));
    assertTrue(q.offerFirst(one));
    assertSame(one, q.peekFirst());
    assertSame(zero, q.peekLast());
}

Example 42 with ArrayDeque

use of java.util.ArrayDeque in project mapdb by jankotek.

the class ArrayDequeTest method testPush.

/**
     * peekFirst() returns element inserted with push
     */
public void testPush() {
    ArrayDeque q = populatedDeque(3);
    q.pollLast();
    q.push(four);
    assertSame(four, q.peekFirst());
}

Example 43 with ArrayDeque

use of java.util.ArrayDeque in project mapdb by jankotek.

the class ArrayDequeTest method testPeek.

/**
     * peek() returns next element, or null if empty
     */
public void testPeek() {
    ArrayDeque q = populatedDeque(SIZE);
    for (int i = 0; i < SIZE; ++i) {
        assertEquals(i, q.peek());
        assertEquals(i, q.poll());
        assertTrue(q.peek() == null || !q.peek().equals(i));
    }
    assertNull(q.peek());
}

Example 44 with ArrayDeque

use of java.util.ArrayDeque in project mapdb by jankotek.

the class ArrayDequeTest method testToArray_NullArg.

/**
     * toArray(null) throws NullPointerException
     */
public void testToArray_NullArg() {
    ArrayDeque l = new ArrayDeque();
    l.add(new Object());
    try {
        l.toArray(null);
        shouldThrow();
    } catch (NullPointerException success) {
    }
}

Example 45 with ArrayDeque

use of java.util.ArrayDeque in project mapdb by jankotek.

the class ArrayDequeTest method testAddAll2.

/**
     * addAll of a collection with null elements throws NPE
     */
public void testAddAll2() {
    ArrayDeque q = new ArrayDeque();
    try {
        q.addAll(Arrays.asList(new Integer[SIZE]));
        shouldThrow();
    } catch (NullPointerException success) {
    }
}