Examples of java.util.NavigableMap.pollFirstEntry()

java.util.NavigableMap.pollFirstEntry()
Removes and returns a key-value mapping associated with the least key in this map, or {@code null} if the map is empty. @return the removed first entry of this map,or {@code null} if this map is empty

        assertNull(entry);
    }


    public void test_DescendingSubMap_pollFirstEntry() {
        NavigableMap decendingMap = tm.descendingMap();
        assertEquals(999, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startExcluded_endExcluded.descendingMap();
        assertEquals(108, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startExcluded_endIncluded.descendingMap();

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    public void test_DescendingSubMap_pollFirstEntry() {
        NavigableMap decendingMap = tm.descendingMap();
        assertEquals(999, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startExcluded_endExcluded.descendingMap();
        assertEquals(108, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startExcluded_endIncluded.descendingMap();
        assertEquals(109, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endExcluded.descendingMap();

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        decendingMap = navigableMap_startExcluded_endExcluded.descendingMap();
        assertEquals(108, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startExcluded_endIncluded.descendingMap();
        assertEquals(109, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endExcluded.descendingMap();
        assertEquals(107, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endIncluded.descendingMap();

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        decendingMap = navigableMap_startExcluded_endIncluded.descendingMap();
        assertEquals(109, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endExcluded.descendingMap();
        assertEquals(107, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endIncluded.descendingMap();
        assertEquals(106, decendingMap.pollFirstEntry().getValue());
    }

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        decendingMap = navigableMap_startIncluded_endExcluded.descendingMap();
        assertEquals(107, decendingMap.pollFirstEntry().getValue());


        decendingMap = navigableMap_startIncluded_endIncluded.descendingMap();
        assertEquals(106, decendingMap.pollFirstEntry().getValue());
    }


    public void test_DescendingSubMap_pollLastEntry() {
        NavigableMap decendingMap = tm.descendingMap();
        assertEquals(0, decendingMap.pollLastEntry().getValue());

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