Examples of java.util.NavigableSet

java.util.NavigableSet
A {@link SortedSet} extended with navigation methods reportingclosest matches for given search targets. Methods {@code lower}, {@code floor}, {@code ceiling}, and {@code higher} return elementsrespectively less than, less than or equal, greater than or equal, and greater than a given element, returning {@code null} if thereis no such element. A {@code NavigableSet} may be accessed andtraversed in either ascending or descending order. The {@code descendingSet} method returns a view of the set with the senses ofall relational and directional methods inverted. The performance of ascending operations and views is likely to be faster than that of descending ones. This interface additionally defines methods {@code pollFirst} and {@code pollLast} that return and remove thelowest and highest element, if one exists, else returning {@code null}. Methods {@code subSet}, {@code headSet}, and {@code tailSet} differ from the like-named {@code SortedSet} methods in accepting additional arguments describingwhether lower and upper bounds are inclusive versus exclusive. Subsets of any {@code NavigableSet} must implement the {@code NavigableSet} interface.
The return values of navigation methods may be ambiguous in implementations that permit {@code null} elements. However, evenin this case the result can be disambiguated by checking {@code contains(null)}. To avoid such issues, implementations of this interface are encouraged to not permit insertion of {@code null} elements. (Note that sorted sets of {@link Comparable} elements intrinsically do not permit {@code null}.)
Methods {@link #subSet(Object,Object) subSet(E, E)}, {@link #headSet(Object) headSet(E)}, and {@link #tailSet(Object) tailSet(E)}are specified to return {@code SortedSet} to allow existingimplementations of {@code SortedSet} to be compatibly retrofitted toimplement {@code NavigableSet}, but extensions and implementations of this interface are encouraged to override these methods to return {@code NavigableSet}.
This interface is a member of the Java Collections Framework. @author Doug Lea @author Josh Bloch @param < E> the type of elements maintained by this set @since 1.6

        }
    }


    public void test_DescendingSubMapEntrySet_comparator() {
        Set entrySet;
        NavigableSet descendingSet;
        Comparator comparator;
        Entry[] entryArray;
        Integer value1, value2;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSet = ((NavigableSet) entrySet).descendingSet();
            assertNull(((NavigableSet) entrySet).comparator());
            comparator = descendingSet.comparator();
            assertNotNull(comparator);


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 1; i < entryArray.length; i++) {
                value1 = (Integer) entryArray[i - 1].getValue();
                value2 = (Integer) entryArray[i].getValue();
                assertTrue(value1 > value2);
                assertTrue(comparator.compare(value1, value2) < 0);
            }
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSet = ((NavigableSet) entrySet).descendingSet();
            assertNull(((NavigableSet) entrySet).comparator());
            comparator = descendingSet.comparator();
            assertNotNull(comparator);


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 1; i < entryArray.length; i++) {
                value1 = (Integer) entryArray[i - 1].getValue();
                value2 = (Integer) entryArray[i].getValue();
                assertTrue(value1 > value2);
                assertTrue(comparator.compare(value1, value2) < 0);
            }
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSet = ((NavigableSet) entrySet).descendingSet();
            assertNull(((NavigableSet) entrySet).comparator());
            comparator = descendingSet.comparator();
            assertNotNull(comparator);


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 1; i < entryArray.length; i++) {
                value1 = (Integer) entryArray[i - 1].getValue();
                value2 = (Integer) entryArray[i].getValue();
                assertTrue(value1 > value2);
                assertTrue(comparator.compare(value1, value2) < 0);
            }
        }


        entrySet = navigableMap_startIncluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSet = ((NavigableSet) entrySet).descendingSet();
            assertNull(((NavigableSet) entrySet).comparator());
            comparator = descendingSet.comparator();
            assertNotNull(comparator);


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 1; i < entryArray.length; i++) {
                value1 = (Integer) entryArray[i - 1].getValue();
                value2 = (Integer) entryArray[i].getValue();
                assertTrue(value1 > value2);
                assertTrue(comparator.compare(value1, value2) < 0);
            }
        }


        String endKey = new Integer(2).toString();
        entrySet = tm.headMap(endKey, true).entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSet = ((NavigableSet) entrySet).descendingSet();
            assertNotNull(descendingSet.comparator());
        }
    }

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        }
    }


    public void test_DescendingSubMapEntrySet_descendingSet() {
        Set entrySet;
        NavigableSet ascendingSubMapEntrySet, descendingSet, descendingDescedingSet;
        Entry[] ascendingEntryArray, descendingDescendingArray;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            descendingDescedingSet = descendingSet.descendingSet();
            ascendingEntryArray = (Entry[]) ascendingSubMapEntrySet
                    .toArray(new Entry[ascendingSubMapEntrySet.size()]);


            descendingDescendingArray = (Entry[]) descendingDescedingSet
                    .toArray(new Entry[descendingDescedingSet.size()]);


            assertEquals(ascendingEntryArray.length,
                    descendingDescendingArray.length);
            for (int i = 0; i < ascendingEntryArray.length; i++) {
                assertEquals(ascendingEntryArray[i],
                        descendingDescendingArray[i]);
            }
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            descendingDescedingSet = descendingSet.descendingSet();
            ascendingEntryArray = (Entry[]) ascendingSubMapEntrySet
                    .toArray(new Entry[ascendingSubMapEntrySet.size()]);


            descendingDescendingArray = (Entry[]) descendingDescedingSet
                    .toArray(new Entry[descendingDescedingSet.size()]);


            assertEquals(ascendingEntryArray.length,
                    descendingDescendingArray.length);
            for (int i = 0; i < ascendingEntryArray.length; i++) {
                assertEquals(ascendingEntryArray[i],
                        descendingDescendingArray[i]);
            }
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            descendingDescedingSet = descendingSet.descendingSet();
            ascendingEntryArray = (Entry[]) ascendingSubMapEntrySet
                    .toArray(new Entry[ascendingSubMapEntrySet.size()]);


            descendingDescendingArray = (Entry[]) descendingDescedingSet
                    .toArray(new Entry[descendingDescedingSet.size()]);


            assertEquals(ascendingEntryArray.length,
                    descendingDescendingArray.length);
            for (int i = 0; i < ascendingEntryArray.length; i++) {
                assertEquals(ascendingEntryArray[i],
                        descendingDescendingArray[i]);
            }
        }


        entrySet = navigableMap_startIncluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            descendingDescedingSet = descendingSet.descendingSet();
            ascendingEntryArray = (Entry[]) ascendingSubMapEntrySet
                    .toArray(new Entry[ascendingSubMapEntrySet.size()]);


            descendingDescendingArray = (Entry[]) descendingDescedingSet
                    .toArray(new Entry[descendingDescedingSet.size()]);


            assertEquals(ascendingEntryArray.length,

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    }


    public void test_DescendingSubMapEntrySet_first() {
        Set entrySet;
        NavigableSet ascendingSubMapEntrySet, descendingSet;
        Entry entry;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            entry = (Entry) descendingSet.first();
            assertEquals(101, entry.getValue());
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            entry = (Entry) descendingSet.first();
            assertEquals(101, entry.getValue());
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            entry = (Entry) descendingSet.first();
            assertEquals(100, entry.getValue());
        }


        entrySet = navigableMap_startIncluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            entry = (Entry) descendingSet.first();
            assertEquals(100, entry.getValue());
        }
    }

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            assertEquals(iterator.next(), descendingIterator.next());
        }
    }


    public void test_DescendingSubMapKeySet_lower() {
        NavigableSet keySet, descendingKeySet;
        Iterator iterator;
        String key, lowerKey;
        int value, lowerValue;


        keySet = navigableMap_startExcluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 108) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(101, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = navigableMap_startExcluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 109) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(101, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = navigableMap_startIncluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 108) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(100, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = navigableMap_startIncluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 109) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(100, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        key = new Integer(2).toString();
        keySet = tm.headMap(key, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        iterator.next();
        iterator.next();
        key = (String) iterator.next();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(new Integer(199).toString(), lowerKey);
        try {
            descendingKeySet.lower(null);
            fail("should throw NPE");
        } catch (NullPointerException e) {
            // Expected
        }


        key = new Integer(0).toString();
        String endKey = key;


        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.lower(endKey));


        key = new Integer(0).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.lower(endKey));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.lower(endKey));
        assertEquals(new Integer(1).toString(), descendingKeySet.lower(key));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.lower(endKey));
        assertEquals(new Integer(1).toString(), descendingKeySet.lower(key));


        // With Comparator
        keySet = ((NavigableMap) subMap_startExcluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 108) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(101, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = ((NavigableMap) subMap_startExcluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 109) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(101, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = ((NavigableMap) subMap_startIncluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);
            if (value < 108) {
                lowerValue = Integer.valueOf(lowerKey);
                assertEquals(value + 1, lowerValue);
            } else {
                assertNull(lowerKey);
            }
        }


        key = new Integer(0).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertEquals(100, Integer.parseInt(lowerKey));


        key = new Integer(2).toString();
        lowerKey = (String) descendingKeySet.lower(key);
        assertNull(lowerKey);


        keySet = ((NavigableMap) subMap_startIncluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            lowerKey = (String) descendingKeySet.lower(key);

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            }
        }
    }


    public void test_DescendingSubMapKeySet_higher() {
        NavigableSet keySet, descendingKeySet;
        Iterator iterator;
        String key, higherKey;
        int value, higherValue;


        keySet = navigableMap_startExcluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 101) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("108", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(0).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(108, Integer.parseInt(higherKey));


        keySet = navigableMap_startExcluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 101) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("109", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(109, Integer.parseInt(higherKey));


        keySet = navigableMap_startIncluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 100) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("108", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(108, Integer.parseInt(higherKey));


        keySet = navigableMap_startIncluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 100) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("109", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(109, Integer.parseInt(higherKey));


        key = new Integer(2).toString();
        keySet = tm.headMap(key, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        key = (String) iterator.next();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(new Integer(199).toString(), higherKey);
        try {
            descendingKeySet.higher(null);
            fail("should throw NPE");
        } catch (NullPointerException e) {
            // Expected
        }


        key = new Integer(0).toString();
        String endKey = key;


        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.higher(endKey));


        key = new Integer(0).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.higher(endKey));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(998).toString(), descendingKeySet
                .higher(endKey));
        assertNull(descendingKeySet.higher(key));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(998).toString(), descendingKeySet
                .higher(endKey));
        assertNull(descendingKeySet.higher(key));


        // With Comparator
        keySet = ((NavigableMap) subMap_startExcluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 101) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("108", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(0).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(108, Integer.parseInt(higherKey));


        keySet = ((NavigableMap) subMap_startExcluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 101) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("109", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(109, Integer.parseInt(higherKey));


        keySet = ((NavigableMap) subMap_startIncluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 100) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("108", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(108, Integer.parseInt(higherKey));


        keySet = ((NavigableMap) subMap_startIncluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        while (iterator.hasNext()) {
            key = (String) iterator.next();
            value = Integer.valueOf(key);
            higherKey = (String) descendingKeySet.higher(key);
            if (value > 100) {
                higherValue = Integer.valueOf(higherKey);
                assertEquals(value - 1, higherValue);
            } else {
                assertNull(higherKey);
            }
        }


        key = new Integer(99999).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals("109", higherKey);


        key = new Integer(-1).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(100).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertNull(higherKey);


        key = new Integer(2).toString();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(109, Integer.parseInt(higherKey));


        key = new Integer(2).toString();
        keySet = tm.headMap(key, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        iterator = descendingKeySet.iterator();
        key = (String) iterator.next();
        higherKey = (String) descendingKeySet.higher(key);
        assertEquals(new Integer(199).toString(), higherKey);
        try {
            descendingKeySet.higher(null);
            fail("should throw NPE");
        } catch (NullPointerException e) {
            // Expected
        }


        key = new Integer(0).toString();
        endKey = key;


        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.higher(endKey));


        key = new Integer(0).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.higher(endKey));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(998).toString(), descendingKeySet
                .higher(endKey));
        assertNull(descendingKeySet.higher(key));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(998).toString(), descendingKeySet
                .higher(endKey));
        assertNull(descendingKeySet.higher(key));
    }

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                .higher(endKey));
        assertNull(descendingKeySet.higher(key));
    }


    public void test_DescendingSubMapKeySet_ceiling() {
        NavigableSet keySet, descendingKeySet;
        String[] keyArray;
        String key, ceilingKey;


        keySet = navigableMap_startExcluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        key = new Integer(2).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertEquals(108, Integer.parseInt(ceilingKey));


        key = new Integer(0).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertNull(ceilingKey);


        key = new Integer(-1).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertNull(ceilingKey);


        key = new Integer(99999).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertEquals(108, Integer.parseInt(ceilingKey));


        keySet = navigableMap_startExcluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        keySet = navigableMap_startIncluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        keySet = navigableMap_startIncluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        key = new Integer(2).toString();
        keySet = tm.headMap(key, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        Iterator iterator = descendingKeySet.iterator();
        assertEquals(key, descendingKeySet.ceiling(iterator.next()));
        try {
            descendingKeySet.ceiling(null);
            fail("should throw NPE");
        } catch (NullPointerException e) {
            // Expected
        }


        key = new Integer(0).toString();
        String endKey = key;


        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(key, descendingKeySet.ceiling(endKey));


        key = new Integer(0).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.ceiling(endKey));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(999).toString(), descendingKeySet
                .ceiling(endKey));
        assertEquals(key, descendingKeySet.ceiling(key));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(998).toString(), descendingKeySet
                .ceiling(endKey));
        assertEquals(key, descendingKeySet.ceiling(key));


        // With Comparator
        keySet = ((NavigableMap) subMap_startExcluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        key = new Integer(2).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertEquals(108, Integer.parseInt(ceilingKey));


        key = new Integer(0).toString();
        ceilingKey = (String) descendingKeySet.ceiling(key);
        assertNull(ceilingKey);


        keySet = ((NavigableMap) subMap_startExcluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        keySet = ((NavigableMap) subMap_startIncluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }


        keySet = ((NavigableMap) subMap_startIncluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            ceilingKey = (String) descendingKeySet.ceiling(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), ceilingKey);

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            assertEquals(new Integer(j - i).toString(), ceilingKey);
        }
    }


    public void test_DescendingSubMapKeySet_floor() {
        NavigableSet keySet, descendingKeySet;
        String[] keyArray;
        String floorKey;


        keySet = navigableMap_startExcluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        String key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(101, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = navigableMap_startExcluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(101, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = navigableMap_startIncluded_endExcluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(100, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = navigableMap_startIncluded_endIncluded.navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(100, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        key = new Integer(2).toString();
        keySet = tm.headMap(key, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        Iterator iterator = descendingKeySet.iterator();
        assertEquals(key, descendingKeySet.floor(iterator.next()));
        try {
            descendingKeySet.floor(null);
            fail("should throw NPE");
        } catch (NullPointerException e) {
            // Expected
        }


        key = new Integer(0).toString();
        String endKey = key;


        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(key, descendingKeySet.floor(endKey));


        key = new Integer(0).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.floor(endKey));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, true).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertEquals(new Integer(999).toString(), descendingKeySet
                .floor(endKey));
        assertEquals(key, descendingKeySet.floor(key));


        endKey = new Integer(999).toString();
        keySet = tm.headMap(endKey, false).navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        assertNull(descendingKeySet.floor(endKey));
        assertEquals(key, descendingKeySet.floor(key));


        // With Comparator
        keySet = ((NavigableMap) subMap_startExcluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(101, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = ((NavigableMap) subMap_startExcluded_endIncluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(101, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = ((NavigableMap) subMap_startIncluded_endExcluded_comparator)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 108; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);
        }


        key = new Integer(0).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertEquals(100, Integer.parseInt(floorKey));


        key = new Integer(2).toString();
        floorKey = (String) descendingKeySet.floor(key);
        assertNull(floorKey);


        keySet = ((NavigableMap) subMap_startIncluded_endIncluded)
                .navigableKeySet();
        descendingKeySet = keySet.descendingSet();
        keyArray = (String[]) descendingKeySet
                .toArray(new String[descendingKeySet.size()]);
        for (int i = 0, j = 109; i < keyArray.length; i++) {
            floorKey = (String) descendingKeySet.floor(keyArray[i]);
            assertEquals(new Integer(j - i).toString(), floorKey);

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        }
    }


    public void test_DescendingSubMapEntrySet_lower() {
        Set entrySet, subSet;
        NavigableSet descendingSubMapEntrySet;
        Iterator iterator;
        Entry entry, lowerEntry;
        int value;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                lowerEntry = (Entry) descendingSubMapEntrySet.lower(entry);
                value = (Integer) entry.getValue();
                if (value < 108) {
                    assertEquals(value + 1, lowerEntry.getValue());
                } else {
                    assertNull(lowerEntry);
                }
            }


            // System.out.println(descendingSubMapEntrySet);
            // System.out.println(tm);
            Object afterEnd = this.subMap_default_afterEnd_109.entrySet()
                    .iterator().next();
            // System.out.println("o:" + afterEnd);
            Object x = descendingSubMapEntrySet.lower(afterEnd);
            // System.out.println("x:" + x);
            assertNull(x);
            Object beforeStart = this.subMap_default_beforeStart_100.entrySet()
                    .iterator().next();
            // System.out.println("before: " + beforeStart);
            Object y = descendingSubMapEntrySet.lower(beforeStart);
            // System.out.println("y: " + y);
            assertNotNull(y);
            assertEquals(101, (((Entry) y).getValue()));
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                lowerEntry = (Entry) descendingSubMapEntrySet.lower(entry);
                value = (Integer) entry.getValue();
                if (value < 109) {
                    assertEquals(value + 1, lowerEntry.getValue());
                } else {
                    assertNull(lowerEntry);
                }
            }
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                lowerEntry = (Entry) descendingSubMapEntrySet.lower(entry);
                value = (Integer) entry.getValue();
                if (value < 108) {
                    assertEquals(value + 1, lowerEntry.getValue());
                } else {
                    assertNull(lowerEntry);
                }
            }
        }


        entrySet = navigableMap_startIncluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                lowerEntry = (Entry) descendingSubMapEntrySet.lower(entry);
                value = (Integer) entry.getValue();
                if (value < 109) {
                    assertEquals(value + 1, lowerEntry.getValue());
                } else {
                    assertNull(lowerEntry);
                }
            }
        }


        String endKey = new Integer(2).toString();
        entrySet = tm.headMap(endKey, true).entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            iterator.next();// 2
            iterator.next();// 199
            entry = (Entry) iterator.next();// 198
            lowerEntry = (Entry) descendingSubMapEntrySet.lower(entry);
            assertEquals(199, lowerEntry.getValue());
        }
    }

View Full Code Here

        }
    }


    public void test_DescendingSubMapEntrySet_higher() {
        Set entrySet, subSet;
        NavigableSet descendingSubMapEntrySet;
        Iterator iterator;
        Entry entry, higherEntry;
        int value;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
                value = (Integer) entry.getValue();
                if (value > 101) {
                    assertEquals(value - 1, higherEntry.getValue());
                } else {
                    assertNull(higherEntry);
                }
            }


            Object afterEnd = this.subMap_default_afterEnd_109.entrySet()
                    .iterator().next();
            Object x = descendingSubMapEntrySet.higher(afterEnd);
            assertNotNull(x);
            assertEquals(108, ((Entry) x).getValue());
            Object beforeStart = this.subMap_default_beforeStart_100.entrySet()
                    .iterator().next();
            Object y = descendingSubMapEntrySet.higher(beforeStart);
            assertNull(y);
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
                value = (Integer) entry.getValue();
                if (value > 101) {
                    assertEquals(value - 1, higherEntry.getValue());
                } else {
                    assertNull(higherEntry);
                }
            }
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
                value = (Integer) entry.getValue();
                if (value > 100) {
                    assertEquals(value - 1, higherEntry.getValue());
                } else {
                    assertNull(higherEntry);
                }
            }
        }


        entrySet = navigableMap_startIncluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
                value = (Integer) entry.getValue();
                if (value > 100) {
                    assertEquals(value - 1, higherEntry.getValue());
                } else {
                    assertNull(higherEntry);
                }
            }
        }


        String endKey = new Integer(2).toString();
        entrySet = tm.headMap(endKey, true).entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            iterator.next();// 2
            iterator.next();// 199
            entry = (Entry) iterator.next();// 198
            higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
            assertEquals(197, higherEntry.getValue());
        }


        // With Comparator
        entrySet = subMap_startExcluded_endExcluded_comparator.entrySet();
        if (entrySet instanceof NavigableSet) {
            descendingSubMapEntrySet = ((NavigableSet) entrySet)
                    .descendingSet();
            iterator = descendingSubMapEntrySet.iterator();
            while (iterator.hasNext()) {
                entry = (Entry) iterator.next();
                higherEntry = (Entry) descendingSubMapEntrySet.higher(entry);
                value = (Integer) entry.getValue();
                if (value > 101) {
                    assertEquals(value - 1, higherEntry.getValue());
                } else {
                    assertNull(higherEntry);
                }
            }


            Object afterEnd = this.subMap_default_afterEnd_109.entrySet()
                    .iterator().next();
            Object x = descendingSubMapEntrySet.higher(afterEnd);
            assertNotNull(x);
            assertEquals(108, ((Entry) x).getValue());
            Object beforeStart = this.subMap_default_beforeStart_100.entrySet()
                    .iterator().next();
            Object y = descendingSubMapEntrySet.higher(beforeStart);
            assertNull(y);
        }
    }

View Full Code Here

        }
    }


    public void test_DescendingSubMapEntrySet_ceiling() {
        Set entrySet;
        NavigableSet ascendingSubMapEntrySet, descendingSet;
        Entry entry;
        Entry[] entryArray;


        entrySet = navigableMap_startExcluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            try {
                descendingSet.ceiling(null);
                fail("should throw NPE");
            } catch (NullPointerException e) {
                // Expected
            }


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 0, j = 108; i < entryArray.length; i++) {
                entry = (Entry) descendingSet.ceiling(entryArray[i]);
                assertEquals(j - i, entry.getValue());
            }


            // System.out.println(descendingSet);
            // System.out.println(tm);
            Object afterEnd = this.subMap_default_afterEnd_109.entrySet()
                    .iterator().next();
            // System.out.println("o:" + afterEnd);//110
            Object x = descendingSet.ceiling(afterEnd);
            assertNotNull(x);
            // System.out.println("x:" + x);
            assertEquals(108, ((Entry) x).getValue());
            Object beforeStart = this.subMap_default_beforeStart_100.entrySet()
                    .iterator().next();
            // System.out.println("before: " + beforeStart);//0
            Object y = descendingSet.ceiling(beforeStart);
            assertNull(y);
        }


        entrySet = navigableMap_startExcluded_endIncluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            try {
                descendingSet.ceiling(null);
                fail("should throw NPE");
            } catch (NullPointerException e) {
                // Expected
            }


            entryArray = (Entry[]) descendingSet
                    .toArray(new Entry[descendingSet.size()]);
            for (int i = 0, j = 109; i < entryArray.length; i++) {
                entry = (Entry) descendingSet.ceiling(entryArray[i]);
                assertEquals(j - i, entry.getValue());
            }
        }


        entrySet = navigableMap_startIncluded_endExcluded.entrySet();
        if (entrySet instanceof NavigableSet) {
            ascendingSubMapEntrySet = (NavigableSet) entrySet;
            descendingSet = ascendingSubMapEntrySet.descendingSet();
            try {
                descendingSet.ceiling(null);
                fail("should throw NPE");
            } catch (NullPointerException e) {
                // Expected

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