Examples of java.util.concurrent.ConcurrentNavigableMap

java.util.concurrent.ConcurrentNavigableMap
A {@link ConcurrentMap} supporting {@link NavigableMap} operations,and recursively so for its navigable sub-maps.
This interface is a member of the Java Collections Framework. @author Doug Lea @param < K> the type of keys maintained by this map @param < V> the type of mapped values @since 1.6


    /**
     *   keySet returns a Set containing all the keys
     */
    public void testDescendingKeySet() {
        ConcurrentNavigableMap map = dmap5();
        Set s = map.keySet();
        assertEquals(5, s.size());
        assertTrue(s.contains(m1));
        assertTrue(s.contains(m2));
        assertTrue(s.contains(m3));
        assertTrue(s.contains(m4));

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    /**
     *   keySet is ordered
     */
    public void testDescendingKeySetOrder() {
        ConcurrentNavigableMap map = dmap5();
        Set s = map.keySet();
        Iterator i = s.iterator();
        Integer last = (Integer)i.next();
        assertEquals(last, m1);
        while (i.hasNext()) {
            Integer k = (Integer)i.next();

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    /**
     * values collection contains all values
     */
    public void testDescendingValues() {
        ConcurrentNavigableMap map = dmap5();
        Collection s = map.values();
        assertEquals(5, s.size());
        assertTrue(s.contains("A"));
        assertTrue(s.contains("B"));
        assertTrue(s.contains("C"));
        assertTrue(s.contains("D"));

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    /**
     *  keySet.toArray returns contains all keys
     */
    public void testDescendingAscendingKeySetToArray() {
        ConcurrentNavigableMap map = dmap5();
        Set s = map.keySet();
        Object[] ar = s.toArray();
        assertTrue(s.containsAll(Arrays.asList(ar)));
        assertEquals(5, ar.length);
        ar[0] = m10;
        assertFalse(s.containsAll(Arrays.asList(ar)));

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    /**
     *  descendingkeySet.toArray returns contains all keys
     */
    public void testDescendingDescendingKeySetToArray() {
        ConcurrentNavigableMap map = dmap5();
        Set s = map.descendingKeySet();
        Object[] ar = s.toArray();
        assertEquals(5, ar.length);
        assertTrue(s.containsAll(Arrays.asList(ar)));
        ar[0] = m10;
        assertFalse(s.containsAll(Arrays.asList(ar)));

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    /**
     *  Values.toArray contains all values
     */
    public void testDescendingValuesToArray() {
        ConcurrentNavigableMap map = dmap5();
        Collection v = map.values();
        Object[] ar = v.toArray();
        ArrayList s = new ArrayList(Arrays.asList(ar));
        assertEquals(5, ar.length);
        assertTrue(s.contains("A"));
        assertTrue(s.contains("B"));

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    /**
     * entrySet contains all pairs
     */
    public void testDescendingEntrySet() {
        ConcurrentNavigableMap map = dmap5();
        Set s = map.entrySet();
        assertEquals(5, s.size());
        Iterator it = s.iterator();
        while (it.hasNext()) {
            Map.Entry e = (Map.Entry) it.next();
            assertTrue(

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    /**
     *   putAll  adds all key-value pairs from the given map
     */
    public void testDescendingPutAll() {
        ConcurrentNavigableMap empty = dmap0();
        ConcurrentNavigableMap map = dmap5();
        empty.putAll(map);
        assertEquals(5, empty.size());
        assertTrue(empty.containsKey(m1));
        assertTrue(empty.containsKey(m2));
        assertTrue(empty.containsKey(m3));

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    /**
     *   putIfAbsent works when the given key is not present
     */
    public void testDescendingPutIfAbsent() {
        ConcurrentNavigableMap map = dmap5();
        map.putIfAbsent(six, "Z");
        assertTrue(map.containsKey(six));
    }

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    /**
     *   putIfAbsent does not add the pair if the key is already present
     */
    public void testDescendingPutIfAbsent2() {
        ConcurrentNavigableMap map = dmap5();
        assertEquals("A", map.putIfAbsent(m1, "Z"));
    }

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