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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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|
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public class TreeMapTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(TreeMapTest.class); |
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} |
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|
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/** |
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* Create a map from Integers 1-5 to Strings "A"-"E". |
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*/ |
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private static TreeMap map5() { |
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TreeMap map = new TreeMap(); |
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assertTrue(map.isEmpty()); |
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map.put(one, "A"); |
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map.put(five, "E"); |
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map.put(three, "C"); |
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map.put(two, "B"); |
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map.put(four, "D"); |
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assertFalse(map.isEmpty()); |
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assertEquals(5, map.size()); |
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return map; |
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} |
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|
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/** |
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* clear removes all pairs |
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*/ |
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public void testClear() { |
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TreeMap map = map5(); |
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map.clear(); |
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assertEquals(map.size(), 0); |
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} |
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|
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/** |
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* |
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*/ |
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public void testConstructFromSorted() { |
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TreeMap map = map5(); |
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TreeMap map2 = new TreeMap(map); |
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assertEquals(map, map2); |
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} |
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|
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/** |
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* Maps with same contents are equal |
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*/ |
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public void testEquals() { |
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TreeMap map1 = map5(); |
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TreeMap map2 = map5(); |
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assertEquals(map1, map2); |
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assertEquals(map2, map1); |
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map1.clear(); |
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assertFalse(map1.equals(map2)); |
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assertFalse(map2.equals(map1)); |
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} |
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|
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/** |
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* containsKey returns true for contained key |
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*/ |
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public void testContainsKey() { |
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TreeMap map = map5(); |
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assertTrue(map.containsKey(one)); |
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assertFalse(map.containsKey(zero)); |
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} |
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|
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/** |
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* containsValue returns true for held values |
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*/ |
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public void testContainsValue() { |
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TreeMap map = map5(); |
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assertTrue(map.containsValue("A")); |
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assertFalse(map.containsValue("Z")); |
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} |
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|
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/** |
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* get returns the correct element at the given key, |
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* or null if not present |
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*/ |
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public void testGet() { |
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TreeMap map = map5(); |
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assertEquals("A", (String)map.get(one)); |
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TreeMap empty = new TreeMap(); |
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assertNull(empty.get(one)); |
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} |
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|
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/** |
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* isEmpty is true of empty map and false for non-empty |
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*/ |
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public void testIsEmpty() { |
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TreeMap empty = new TreeMap(); |
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TreeMap map = map5(); |
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assertTrue(empty.isEmpty()); |
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assertFalse(map.isEmpty()); |
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} |
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|
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/** |
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* firstKey returns first key |
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*/ |
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public void testFirstKey() { |
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TreeMap map = map5(); |
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assertEquals(one, map.firstKey()); |
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} |
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|
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/** |
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* lastKey returns last key |
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*/ |
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public void testLastKey() { |
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TreeMap map = map5(); |
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assertEquals(five, map.lastKey()); |
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} |
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|
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|
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/** |
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* keySet.toArray returns contains all keys |
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*/ |
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public void testKeySetToArray() { |
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TreeMap map = map5(); |
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Set s = map.keySet(); |
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Object[] ar = s.toArray(); |
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assertTrue(s.containsAll(Arrays.asList(ar))); |
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assertEquals(5, ar.length); |
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ar[0] = m10; |
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assertFalse(s.containsAll(Arrays.asList(ar))); |
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} |
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|
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/** |
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* descendingkeySet.toArray returns contains all keys |
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*/ |
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public void testDescendingKeySetToArray() { |
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TreeMap map = map5(); |
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Set s = map.descendingKeySet(); |
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Object[] ar = s.toArray(); |
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assertEquals(5, ar.length); |
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assertTrue(s.containsAll(Arrays.asList(ar))); |
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ar[0] = m10; |
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assertFalse(s.containsAll(Arrays.asList(ar))); |
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} |
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|
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/** |
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* keySet returns a Set containing all the keys |
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*/ |
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public void testKeySet() { |
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TreeMap map = map5(); |
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Set s = map.keySet(); |
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assertEquals(5, s.size()); |
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assertTrue(s.contains(one)); |
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assertTrue(s.contains(two)); |
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assertTrue(s.contains(three)); |
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assertTrue(s.contains(four)); |
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assertTrue(s.contains(five)); |
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} |
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|
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/** |
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* keySet is ordered |
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*/ |
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public void testKeySetOrder() { |
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TreeMap map = map5(); |
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Set s = map.keySet(); |
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Iterator i = s.iterator(); |
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Integer last = (Integer)i.next(); |
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assertEquals(last, one); |
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int count = 1; |
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while (i.hasNext()) { |
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Integer k = (Integer)i.next(); |
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assertTrue(last.compareTo(k) < 0); |
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last = k; |
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++count; |
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} |
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assertEquals(count ,5); |
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} |
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|
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/** |
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* descending iterator of key set is inverse ordered |
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*/ |
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public void testKeySetDescendingIteratorOrder() { |
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TreeMap map = map5(); |
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NavigableSet s = map.navigableKeySet(); |
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Iterator i = s.descendingIterator(); |
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Integer last = (Integer)i.next(); |
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assertEquals(last, five); |
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int count = 1; |
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while (i.hasNext()) { |
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Integer k = (Integer)i.next(); |
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assertTrue(last.compareTo(k) > 0); |
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last = k; |
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++count; |
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} |
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assertEquals(count ,5); |
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} |
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|
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/** |
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* descendingKeySet is ordered |
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*/ |
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public void testDescendingKeySetOrder() { |
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TreeMap map = map5(); |
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Set s = map.descendingKeySet(); |
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Iterator i = s.iterator(); |
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Integer last = (Integer)i.next(); |
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assertEquals(last, five); |
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int count = 1; |
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while (i.hasNext()) { |
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Integer k = (Integer)i.next(); |
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assertTrue(last.compareTo(k) > 0); |
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last = k; |
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++count; |
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} |
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assertEquals(count, 5); |
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} |
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|
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/** |
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* descending iterator of descendingKeySet is ordered |
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*/ |
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public void testDescendingKeySetDescendingIteratorOrder() { |
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TreeMap map = map5(); |
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NavigableSet s = map.descendingKeySet(); |
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Iterator i = s.descendingIterator(); |
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Integer last = (Integer)i.next(); |
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assertEquals(last, one); |
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int count = 1; |
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while (i.hasNext()) { |
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Integer k = (Integer)i.next(); |
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assertTrue(last.compareTo(k) < 0); |
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last = k; |
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++count; |
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} |
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assertEquals(count, 5); |
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} |
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|
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/** |
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* values collection contains all values |
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*/ |
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public void testValues() { |
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TreeMap map = map5(); |
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Collection s = map.values(); |
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assertEquals(5, s.size()); |
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assertTrue(s.contains("A")); |
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assertTrue(s.contains("B")); |
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assertTrue(s.contains("C")); |
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assertTrue(s.contains("D")); |
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assertTrue(s.contains("E")); |
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} |
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|
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/** |
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* entrySet contains all pairs |
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*/ |
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public void testEntrySet() { |
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TreeMap map = map5(); |
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Set s = map.entrySet(); |
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assertEquals(5, s.size()); |
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Iterator it = s.iterator(); |
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while (it.hasNext()) { |
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Map.Entry e = (Map.Entry) it.next(); |
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assertTrue( |
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(e.getKey().equals(one) && e.getValue().equals("A")) || |
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(e.getKey().equals(two) && e.getValue().equals("B")) || |
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(e.getKey().equals(three) && e.getValue().equals("C")) || |
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(e.getKey().equals(four) && e.getValue().equals("D")) || |
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(e.getKey().equals(five) && e.getValue().equals("E"))); |
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} |
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} |
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|
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/** |
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* descendingEntrySet contains all pairs |
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*/ |
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public void testDescendingEntrySet() { |
276 |
TreeMap map = map5(); |
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Set s = map.descendingMap().entrySet(); |
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assertEquals(5, s.size()); |
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Iterator it = s.iterator(); |
280 |
while (it.hasNext()) { |
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Map.Entry e = (Map.Entry) it.next(); |
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assertTrue( |
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(e.getKey().equals(one) && e.getValue().equals("A")) || |
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(e.getKey().equals(two) && e.getValue().equals("B")) || |
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(e.getKey().equals(three) && e.getValue().equals("C")) || |
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(e.getKey().equals(four) && e.getValue().equals("D")) || |
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(e.getKey().equals(five) && e.getValue().equals("E"))); |
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} |
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} |
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|
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/** |
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* entrySet.toArray contains all entries |
293 |
*/ |
294 |
public void testEntrySetToArray() { |
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TreeMap map = map5(); |
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Set s = map.entrySet(); |
297 |
Object[] ar = s.toArray(); |
298 |
assertEquals(5, ar.length); |
299 |
for (int i = 0; i < 5; ++i) { |
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assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey())); |
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assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue())); |
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} |
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} |
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|
305 |
/** |
306 |
* descendingEntrySet.toArray contains all entries |
307 |
*/ |
308 |
public void testDescendingEntrySetToArray() { |
309 |
TreeMap map = map5(); |
310 |
Set s = map.descendingMap().entrySet(); |
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Object[] ar = s.toArray(); |
312 |
assertEquals(5, ar.length); |
313 |
for (int i = 0; i < 5; ++i) { |
314 |
assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey())); |
315 |
assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue())); |
316 |
} |
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} |
318 |
|
319 |
/** |
320 |
* putAll adds all key-value pairs from the given map |
321 |
*/ |
322 |
public void testPutAll() { |
323 |
TreeMap empty = new TreeMap(); |
324 |
TreeMap map = map5(); |
325 |
empty.putAll(map); |
326 |
assertEquals(5, empty.size()); |
327 |
assertTrue(empty.containsKey(one)); |
328 |
assertTrue(empty.containsKey(two)); |
329 |
assertTrue(empty.containsKey(three)); |
330 |
assertTrue(empty.containsKey(four)); |
331 |
assertTrue(empty.containsKey(five)); |
332 |
} |
333 |
|
334 |
/** |
335 |
* remove removes the correct key-value pair from the map |
336 |
*/ |
337 |
public void testRemove() { |
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TreeMap map = map5(); |
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map.remove(five); |
340 |
assertEquals(4, map.size()); |
341 |
assertFalse(map.containsKey(five)); |
342 |
} |
343 |
|
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/** |
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* lowerEntry returns preceding entry. |
346 |
*/ |
347 |
public void testLowerEntry() { |
348 |
TreeMap map = map5(); |
349 |
Map.Entry e1 = map.lowerEntry(three); |
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assertEquals(two, e1.getKey()); |
351 |
|
352 |
Map.Entry e2 = map.lowerEntry(six); |
353 |
assertEquals(five, e2.getKey()); |
354 |
|
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Map.Entry e3 = map.lowerEntry(one); |
356 |
assertNull(e3); |
357 |
|
358 |
Map.Entry e4 = map.lowerEntry(zero); |
359 |
assertNull(e4); |
360 |
} |
361 |
|
362 |
/** |
363 |
* higherEntry returns next entry. |
364 |
*/ |
365 |
public void testHigherEntry() { |
366 |
TreeMap map = map5(); |
367 |
Map.Entry e1 = map.higherEntry(three); |
368 |
assertEquals(four, e1.getKey()); |
369 |
|
370 |
Map.Entry e2 = map.higherEntry(zero); |
371 |
assertEquals(one, e2.getKey()); |
372 |
|
373 |
Map.Entry e3 = map.higherEntry(five); |
374 |
assertNull(e3); |
375 |
|
376 |
Map.Entry e4 = map.higherEntry(six); |
377 |
assertNull(e4); |
378 |
} |
379 |
|
380 |
/** |
381 |
* floorEntry returns preceding entry. |
382 |
*/ |
383 |
public void testFloorEntry() { |
384 |
TreeMap map = map5(); |
385 |
Map.Entry e1 = map.floorEntry(three); |
386 |
assertEquals(three, e1.getKey()); |
387 |
|
388 |
Map.Entry e2 = map.floorEntry(six); |
389 |
assertEquals(five, e2.getKey()); |
390 |
|
391 |
Map.Entry e3 = map.floorEntry(one); |
392 |
assertEquals(one, e3.getKey()); |
393 |
|
394 |
Map.Entry e4 = map.floorEntry(zero); |
395 |
assertNull(e4); |
396 |
} |
397 |
|
398 |
/** |
399 |
* ceilingEntry returns next entry. |
400 |
*/ |
401 |
public void testCeilingEntry() { |
402 |
TreeMap map = map5(); |
403 |
Map.Entry e1 = map.ceilingEntry(three); |
404 |
assertEquals(three, e1.getKey()); |
405 |
|
406 |
Map.Entry e2 = map.ceilingEntry(zero); |
407 |
assertEquals(one, e2.getKey()); |
408 |
|
409 |
Map.Entry e3 = map.ceilingEntry(five); |
410 |
assertEquals(five, e3.getKey()); |
411 |
|
412 |
Map.Entry e4 = map.ceilingEntry(six); |
413 |
assertNull(e4); |
414 |
} |
415 |
|
416 |
|
417 |
/** |
418 |
* lowerKey returns preceding element |
419 |
*/ |
420 |
public void testLowerKey() { |
421 |
TreeMap q = map5(); |
422 |
Object e1 = q.lowerKey(three); |
423 |
assertEquals(two, e1); |
424 |
|
425 |
Object e2 = q.lowerKey(six); |
426 |
assertEquals(five, e2); |
427 |
|
428 |
Object e3 = q.lowerKey(one); |
429 |
assertNull(e3); |
430 |
|
431 |
Object e4 = q.lowerKey(zero); |
432 |
assertNull(e4); |
433 |
} |
434 |
|
435 |
/** |
436 |
* higherKey returns next element |
437 |
*/ |
438 |
public void testHigherKey() { |
439 |
TreeMap q = map5(); |
440 |
Object e1 = q.higherKey(three); |
441 |
assertEquals(four, e1); |
442 |
|
443 |
Object e2 = q.higherKey(zero); |
444 |
assertEquals(one, e2); |
445 |
|
446 |
Object e3 = q.higherKey(five); |
447 |
assertNull(e3); |
448 |
|
449 |
Object e4 = q.higherKey(six); |
450 |
assertNull(e4); |
451 |
} |
452 |
|
453 |
/** |
454 |
* floorKey returns preceding element |
455 |
*/ |
456 |
public void testFloorKey() { |
457 |
TreeMap q = map5(); |
458 |
Object e1 = q.floorKey(three); |
459 |
assertEquals(three, e1); |
460 |
|
461 |
Object e2 = q.floorKey(six); |
462 |
assertEquals(five, e2); |
463 |
|
464 |
Object e3 = q.floorKey(one); |
465 |
assertEquals(one, e3); |
466 |
|
467 |
Object e4 = q.floorKey(zero); |
468 |
assertNull(e4); |
469 |
} |
470 |
|
471 |
/** |
472 |
* ceilingKey returns next element |
473 |
*/ |
474 |
public void testCeilingKey() { |
475 |
TreeMap q = map5(); |
476 |
Object e1 = q.ceilingKey(three); |
477 |
assertEquals(three, e1); |
478 |
|
479 |
Object e2 = q.ceilingKey(zero); |
480 |
assertEquals(one, e2); |
481 |
|
482 |
Object e3 = q.ceilingKey(five); |
483 |
assertEquals(five, e3); |
484 |
|
485 |
Object e4 = q.ceilingKey(six); |
486 |
assertNull(e4); |
487 |
} |
488 |
|
489 |
/** |
490 |
* pollFirstEntry returns entries in order |
491 |
*/ |
492 |
public void testPollFirstEntry() { |
493 |
TreeMap map = map5(); |
494 |
Map.Entry e = map.pollFirstEntry(); |
495 |
assertEquals(one, e.getKey()); |
496 |
assertEquals("A", e.getValue()); |
497 |
e = map.pollFirstEntry(); |
498 |
assertEquals(two, e.getKey()); |
499 |
map.put(one, "A"); |
500 |
e = map.pollFirstEntry(); |
501 |
assertEquals(one, e.getKey()); |
502 |
assertEquals("A", e.getValue()); |
503 |
e = map.pollFirstEntry(); |
504 |
assertEquals(three, e.getKey()); |
505 |
map.remove(four); |
506 |
e = map.pollFirstEntry(); |
507 |
assertEquals(five, e.getKey()); |
508 |
try { |
509 |
e.setValue("A"); |
510 |
shouldThrow(); |
511 |
} catch (UnsupportedOperationException success) {} |
512 |
e = map.pollFirstEntry(); |
513 |
assertNull(e); |
514 |
} |
515 |
|
516 |
/** |
517 |
* pollLastEntry returns entries in order |
518 |
*/ |
519 |
public void testPollLastEntry() { |
520 |
TreeMap map = map5(); |
521 |
Map.Entry e = map.pollLastEntry(); |
522 |
assertEquals(five, e.getKey()); |
523 |
assertEquals("E", e.getValue()); |
524 |
e = map.pollLastEntry(); |
525 |
assertEquals(four, e.getKey()); |
526 |
map.put(five, "E"); |
527 |
e = map.pollLastEntry(); |
528 |
assertEquals(five, e.getKey()); |
529 |
assertEquals("E", e.getValue()); |
530 |
e = map.pollLastEntry(); |
531 |
assertEquals(three, e.getKey()); |
532 |
map.remove(two); |
533 |
e = map.pollLastEntry(); |
534 |
assertEquals(one, e.getKey()); |
535 |
try { |
536 |
e.setValue("E"); |
537 |
shouldThrow(); |
538 |
} catch (UnsupportedOperationException success) {} |
539 |
e = map.pollLastEntry(); |
540 |
assertNull(e); |
541 |
} |
542 |
|
543 |
/** |
544 |
* size returns the correct values |
545 |
*/ |
546 |
public void testSize() { |
547 |
TreeMap map = map5(); |
548 |
TreeMap empty = new TreeMap(); |
549 |
assertEquals(0, empty.size()); |
550 |
assertEquals(5, map.size()); |
551 |
} |
552 |
|
553 |
/** |
554 |
* toString contains toString of elements |
555 |
*/ |
556 |
public void testToString() { |
557 |
TreeMap map = map5(); |
558 |
String s = map.toString(); |
559 |
for (int i = 1; i <= 5; ++i) { |
560 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
561 |
} |
562 |
} |
563 |
|
564 |
// Exception tests |
565 |
|
566 |
/** |
567 |
* get(null) of nonempty map throws NPE |
568 |
*/ |
569 |
public void testGet_NullPointerException() { |
570 |
try { |
571 |
TreeMap c = map5(); |
572 |
c.get(null); |
573 |
shouldThrow(); |
574 |
} catch (NullPointerException success) {} |
575 |
} |
576 |
|
577 |
/** |
578 |
* containsKey(null) of nonempty map throws NPE |
579 |
*/ |
580 |
public void testContainsKey_NullPointerException() { |
581 |
try { |
582 |
TreeMap c = map5(); |
583 |
c.containsKey(null); |
584 |
shouldThrow(); |
585 |
} catch (NullPointerException success) {} |
586 |
} |
587 |
|
588 |
/** |
589 |
* remove(null) throws NPE for nonempty map |
590 |
*/ |
591 |
public void testRemove1_NullPointerException() { |
592 |
try { |
593 |
TreeMap c = new TreeMap(); |
594 |
c.put("sadsdf", "asdads"); |
595 |
c.remove(null); |
596 |
shouldThrow(); |
597 |
} catch (NullPointerException success) {} |
598 |
} |
599 |
|
600 |
/** |
601 |
* A deserialized map equals original |
602 |
*/ |
603 |
public void testSerialization() throws Exception { |
604 |
TreeMap q = map5(); |
605 |
|
606 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
607 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
608 |
out.writeObject(q); |
609 |
out.close(); |
610 |
|
611 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
612 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
613 |
TreeMap r = (TreeMap)in.readObject(); |
614 |
assertEquals(q.size(), r.size()); |
615 |
assertTrue(q.equals(r)); |
616 |
assertTrue(r.equals(q)); |
617 |
} |
618 |
|
619 |
/** |
620 |
* subMap returns map with keys in requested range |
621 |
*/ |
622 |
public void testSubMapContents() { |
623 |
TreeMap map = map5(); |
624 |
NavigableMap sm = map.subMap(two, true, four, false); |
625 |
assertEquals(two, sm.firstKey()); |
626 |
assertEquals(three, sm.lastKey()); |
627 |
assertEquals(2, sm.size()); |
628 |
assertFalse(sm.containsKey(one)); |
629 |
assertTrue(sm.containsKey(two)); |
630 |
assertTrue(sm.containsKey(three)); |
631 |
assertFalse(sm.containsKey(four)); |
632 |
assertFalse(sm.containsKey(five)); |
633 |
Iterator i = sm.keySet().iterator(); |
634 |
Object k; |
635 |
k = (Integer)(i.next()); |
636 |
assertEquals(two, k); |
637 |
k = (Integer)(i.next()); |
638 |
assertEquals(three, k); |
639 |
assertFalse(i.hasNext()); |
640 |
Iterator r = sm.descendingKeySet().iterator(); |
641 |
k = (Integer)(r.next()); |
642 |
assertEquals(three, k); |
643 |
k = (Integer)(r.next()); |
644 |
assertEquals(two, k); |
645 |
assertFalse(r.hasNext()); |
646 |
|
647 |
Iterator j = sm.keySet().iterator(); |
648 |
j.next(); |
649 |
j.remove(); |
650 |
assertFalse(map.containsKey(two)); |
651 |
assertEquals(4, map.size()); |
652 |
assertEquals(1, sm.size()); |
653 |
assertEquals(three, sm.firstKey()); |
654 |
assertEquals(three, sm.lastKey()); |
655 |
assertEquals("C", sm.remove(three)); |
656 |
assertTrue(sm.isEmpty()); |
657 |
assertEquals(3, map.size()); |
658 |
} |
659 |
|
660 |
public void testSubMapContents2() { |
661 |
TreeMap map = map5(); |
662 |
NavigableMap sm = map.subMap(two, true, three, false); |
663 |
assertEquals(1, sm.size()); |
664 |
assertEquals(two, sm.firstKey()); |
665 |
assertEquals(two, sm.lastKey()); |
666 |
assertFalse(sm.containsKey(one)); |
667 |
assertTrue(sm.containsKey(two)); |
668 |
assertFalse(sm.containsKey(three)); |
669 |
assertFalse(sm.containsKey(four)); |
670 |
assertFalse(sm.containsKey(five)); |
671 |
Iterator i = sm.keySet().iterator(); |
672 |
Object k; |
673 |
k = (Integer)(i.next()); |
674 |
assertEquals(two, k); |
675 |
assertFalse(i.hasNext()); |
676 |
Iterator r = sm.descendingKeySet().iterator(); |
677 |
k = (Integer)(r.next()); |
678 |
assertEquals(two, k); |
679 |
assertFalse(r.hasNext()); |
680 |
|
681 |
Iterator j = sm.keySet().iterator(); |
682 |
j.next(); |
683 |
j.remove(); |
684 |
assertFalse(map.containsKey(two)); |
685 |
assertEquals(4, map.size()); |
686 |
assertEquals(0, sm.size()); |
687 |
assertTrue(sm.isEmpty()); |
688 |
assertSame(sm.remove(three), null); |
689 |
assertEquals(4, map.size()); |
690 |
} |
691 |
|
692 |
/** |
693 |
* headMap returns map with keys in requested range |
694 |
*/ |
695 |
public void testHeadMapContents() { |
696 |
TreeMap map = map5(); |
697 |
NavigableMap sm = map.headMap(four, false); |
698 |
assertTrue(sm.containsKey(one)); |
699 |
assertTrue(sm.containsKey(two)); |
700 |
assertTrue(sm.containsKey(three)); |
701 |
assertFalse(sm.containsKey(four)); |
702 |
assertFalse(sm.containsKey(five)); |
703 |
Iterator i = sm.keySet().iterator(); |
704 |
Object k; |
705 |
k = (Integer)(i.next()); |
706 |
assertEquals(one, k); |
707 |
k = (Integer)(i.next()); |
708 |
assertEquals(two, k); |
709 |
k = (Integer)(i.next()); |
710 |
assertEquals(three, k); |
711 |
assertFalse(i.hasNext()); |
712 |
sm.clear(); |
713 |
assertTrue(sm.isEmpty()); |
714 |
assertEquals(2, map.size()); |
715 |
assertEquals(four, map.firstKey()); |
716 |
} |
717 |
|
718 |
/** |
719 |
* headMap returns map with keys in requested range |
720 |
*/ |
721 |
public void testTailMapContents() { |
722 |
TreeMap map = map5(); |
723 |
NavigableMap sm = map.tailMap(two, true); |
724 |
assertFalse(sm.containsKey(one)); |
725 |
assertTrue(sm.containsKey(two)); |
726 |
assertTrue(sm.containsKey(three)); |
727 |
assertTrue(sm.containsKey(four)); |
728 |
assertTrue(sm.containsKey(five)); |
729 |
Iterator i = sm.keySet().iterator(); |
730 |
Object k; |
731 |
k = (Integer)(i.next()); |
732 |
assertEquals(two, k); |
733 |
k = (Integer)(i.next()); |
734 |
assertEquals(three, k); |
735 |
k = (Integer)(i.next()); |
736 |
assertEquals(four, k); |
737 |
k = (Integer)(i.next()); |
738 |
assertEquals(five, k); |
739 |
assertFalse(i.hasNext()); |
740 |
Iterator r = sm.descendingKeySet().iterator(); |
741 |
k = (Integer)(r.next()); |
742 |
assertEquals(five, k); |
743 |
k = (Integer)(r.next()); |
744 |
assertEquals(four, k); |
745 |
k = (Integer)(r.next()); |
746 |
assertEquals(three, k); |
747 |
k = (Integer)(r.next()); |
748 |
assertEquals(two, k); |
749 |
assertFalse(r.hasNext()); |
750 |
|
751 |
Iterator ei = sm.entrySet().iterator(); |
752 |
Map.Entry e; |
753 |
e = (Map.Entry)(ei.next()); |
754 |
assertEquals(two, e.getKey()); |
755 |
assertEquals("B", e.getValue()); |
756 |
e = (Map.Entry)(ei.next()); |
757 |
assertEquals(three, e.getKey()); |
758 |
assertEquals("C", e.getValue()); |
759 |
e = (Map.Entry)(ei.next()); |
760 |
assertEquals(four, e.getKey()); |
761 |
assertEquals("D", e.getValue()); |
762 |
e = (Map.Entry)(ei.next()); |
763 |
assertEquals(five, e.getKey()); |
764 |
assertEquals("E", e.getValue()); |
765 |
assertFalse(i.hasNext()); |
766 |
|
767 |
NavigableMap ssm = sm.tailMap(four, true); |
768 |
assertEquals(four, ssm.firstKey()); |
769 |
assertEquals(five, ssm.lastKey()); |
770 |
assertEquals("D", ssm.remove(four)); |
771 |
assertEquals(1, ssm.size()); |
772 |
assertEquals(3, sm.size()); |
773 |
assertEquals(4, map.size()); |
774 |
} |
775 |
|
776 |
Random rnd = new Random(666); |
777 |
BitSet bs; |
778 |
|
779 |
/** |
780 |
* Submaps of submaps subdivide correctly |
781 |
*/ |
782 |
public void testRecursiveSubMaps() throws Exception { |
783 |
int mapSize = expensiveTests ? 1000 : 100; |
784 |
Class cl = TreeMap.class; |
785 |
NavigableMap<Integer, Integer> map = newMap(cl); |
786 |
bs = new BitSet(mapSize); |
787 |
|
788 |
populate(map, mapSize); |
789 |
check(map, 0, mapSize - 1, true); |
790 |
check(map.descendingMap(), 0, mapSize - 1, false); |
791 |
|
792 |
mutateMap(map, 0, mapSize - 1); |
793 |
check(map, 0, mapSize - 1, true); |
794 |
check(map.descendingMap(), 0, mapSize - 1, false); |
795 |
|
796 |
bashSubMap(map.subMap(0, true, mapSize, false), |
797 |
0, mapSize - 1, true); |
798 |
} |
799 |
|
800 |
static NavigableMap<Integer, Integer> newMap(Class cl) throws Exception { |
801 |
NavigableMap<Integer, Integer> result |
802 |
= (NavigableMap<Integer, Integer>) cl.newInstance(); |
803 |
assertEquals(result.size(), 0); |
804 |
assertFalse(result.keySet().iterator().hasNext()); |
805 |
return result; |
806 |
} |
807 |
|
808 |
void populate(NavigableMap<Integer, Integer> map, int limit) { |
809 |
for (int i = 0, n = 2 * limit / 3; i < n; i++) { |
810 |
int key = rnd.nextInt(limit); |
811 |
put(map, key); |
812 |
} |
813 |
} |
814 |
|
815 |
void mutateMap(NavigableMap<Integer, Integer> map, int min, int max) { |
816 |
int size = map.size(); |
817 |
int rangeSize = max - min + 1; |
818 |
|
819 |
// Remove a bunch of entries directly |
820 |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
821 |
remove(map, min - 5 + rnd.nextInt(rangeSize + 10)); |
822 |
} |
823 |
|
824 |
// Remove a bunch of entries with iterator |
825 |
for (Iterator<Integer> it = map.keySet().iterator(); it.hasNext(); ) { |
826 |
if (rnd.nextBoolean()) { |
827 |
bs.clear(it.next()); |
828 |
it.remove(); |
829 |
} |
830 |
} |
831 |
|
832 |
// Add entries till we're back to original size |
833 |
while (map.size() < size) { |
834 |
int key = min + rnd.nextInt(rangeSize); |
835 |
assertTrue(key >= min && key<= max); |
836 |
put(map, key); |
837 |
} |
838 |
} |
839 |
|
840 |
void mutateSubMap(NavigableMap<Integer, Integer> map, int min, int max) { |
841 |
int size = map.size(); |
842 |
int rangeSize = max - min + 1; |
843 |
|
844 |
// Remove a bunch of entries directly |
845 |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
846 |
remove(map, min - 5 + rnd.nextInt(rangeSize + 10)); |
847 |
} |
848 |
|
849 |
// Remove a bunch of entries with iterator |
850 |
for (Iterator<Integer> it = map.keySet().iterator(); it.hasNext(); ) { |
851 |
if (rnd.nextBoolean()) { |
852 |
bs.clear(it.next()); |
853 |
it.remove(); |
854 |
} |
855 |
} |
856 |
|
857 |
// Add entries till we're back to original size |
858 |
while (map.size() < size) { |
859 |
int key = min - 5 + rnd.nextInt(rangeSize + 10); |
860 |
if (key >= min && key<= max) { |
861 |
put(map, key); |
862 |
} else { |
863 |
try { |
864 |
map.put(key, 2 * key); |
865 |
shouldThrow(); |
866 |
} catch (IllegalArgumentException success) {} |
867 |
} |
868 |
} |
869 |
} |
870 |
|
871 |
void put(NavigableMap<Integer, Integer> map, int key) { |
872 |
if (map.put(key, 2 * key) == null) |
873 |
bs.set(key); |
874 |
} |
875 |
|
876 |
void remove(NavigableMap<Integer, Integer> map, int key) { |
877 |
if (map.remove(key) != null) |
878 |
bs.clear(key); |
879 |
} |
880 |
|
881 |
void bashSubMap(NavigableMap<Integer, Integer> map, |
882 |
int min, int max, boolean ascending) { |
883 |
check(map, min, max, ascending); |
884 |
check(map.descendingMap(), min, max, !ascending); |
885 |
|
886 |
mutateSubMap(map, min, max); |
887 |
check(map, min, max, ascending); |
888 |
check(map.descendingMap(), min, max, !ascending); |
889 |
|
890 |
// Recurse |
891 |
if (max - min < 2) |
892 |
return; |
893 |
int midPoint = (min + max) / 2; |
894 |
|
895 |
// headMap - pick direction and endpoint inclusion randomly |
896 |
boolean incl = rnd.nextBoolean(); |
897 |
NavigableMap<Integer,Integer> hm = map.headMap(midPoint, incl); |
898 |
if (ascending) { |
899 |
if (rnd.nextBoolean()) |
900 |
bashSubMap(hm, min, midPoint - (incl ? 0 : 1), true); |
901 |
else |
902 |
bashSubMap(hm.descendingMap(), min, midPoint - (incl ? 0 : 1), |
903 |
false); |
904 |
} else { |
905 |
if (rnd.nextBoolean()) |
906 |
bashSubMap(hm, midPoint + (incl ? 0 : 1), max, false); |
907 |
else |
908 |
bashSubMap(hm.descendingMap(), midPoint + (incl ? 0 : 1), max, |
909 |
true); |
910 |
} |
911 |
|
912 |
// tailMap - pick direction and endpoint inclusion randomly |
913 |
incl = rnd.nextBoolean(); |
914 |
NavigableMap<Integer,Integer> tm = map.tailMap(midPoint,incl); |
915 |
if (ascending) { |
916 |
if (rnd.nextBoolean()) |
917 |
bashSubMap(tm, midPoint + (incl ? 0 : 1), max, true); |
918 |
else |
919 |
bashSubMap(tm.descendingMap(), midPoint + (incl ? 0 : 1), max, |
920 |
false); |
921 |
} else { |
922 |
if (rnd.nextBoolean()) { |
923 |
bashSubMap(tm, min, midPoint - (incl ? 0 : 1), false); |
924 |
} else { |
925 |
bashSubMap(tm.descendingMap(), min, midPoint - (incl ? 0 : 1), |
926 |
true); |
927 |
} |
928 |
} |
929 |
|
930 |
// subMap - pick direction and endpoint inclusion randomly |
931 |
int rangeSize = max - min + 1; |
932 |
int[] endpoints = new int[2]; |
933 |
endpoints[0] = min + rnd.nextInt(rangeSize); |
934 |
endpoints[1] = min + rnd.nextInt(rangeSize); |
935 |
Arrays.sort(endpoints); |
936 |
boolean lowIncl = rnd.nextBoolean(); |
937 |
boolean highIncl = rnd.nextBoolean(); |
938 |
if (ascending) { |
939 |
NavigableMap<Integer,Integer> sm = map.subMap( |
940 |
endpoints[0], lowIncl, endpoints[1], highIncl); |
941 |
if (rnd.nextBoolean()) |
942 |
bashSubMap(sm, endpoints[0] + (lowIncl ? 0 : 1), |
943 |
endpoints[1] - (highIncl ? 0 : 1), true); |
944 |
else |
945 |
bashSubMap(sm.descendingMap(), endpoints[0] + (lowIncl ? 0 : 1), |
946 |
endpoints[1] - (highIncl ? 0 : 1), false); |
947 |
} else { |
948 |
NavigableMap<Integer,Integer> sm = map.subMap( |
949 |
endpoints[1], highIncl, endpoints[0], lowIncl); |
950 |
if (rnd.nextBoolean()) |
951 |
bashSubMap(sm, endpoints[0] + (lowIncl ? 0 : 1), |
952 |
endpoints[1] - (highIncl ? 0 : 1), false); |
953 |
else |
954 |
bashSubMap(sm.descendingMap(), endpoints[0] + (lowIncl ? 0 : 1), |
955 |
endpoints[1] - (highIncl ? 0 : 1), true); |
956 |
} |
957 |
} |
958 |
|
959 |
/** |
960 |
* min and max are both inclusive. If max < min, interval is empty. |
961 |
*/ |
962 |
void check(NavigableMap<Integer, Integer> map, |
963 |
final int min, final int max, final boolean ascending) { |
964 |
class ReferenceSet { |
965 |
int lower(int key) { |
966 |
return ascending ? lowerAscending(key) : higherAscending(key); |
967 |
} |
968 |
int floor(int key) { |
969 |
return ascending ? floorAscending(key) : ceilingAscending(key); |
970 |
} |
971 |
int ceiling(int key) { |
972 |
return ascending ? ceilingAscending(key) : floorAscending(key); |
973 |
} |
974 |
int higher(int key) { |
975 |
return ascending ? higherAscending(key) : lowerAscending(key); |
976 |
} |
977 |
int first() { |
978 |
return ascending ? firstAscending() : lastAscending(); |
979 |
} |
980 |
int last() { |
981 |
return ascending ? lastAscending() : firstAscending(); |
982 |
} |
983 |
int lowerAscending(int key) { |
984 |
return floorAscending(key - 1); |
985 |
} |
986 |
int floorAscending(int key) { |
987 |
if (key < min) |
988 |
return -1; |
989 |
else if (key > max) |
990 |
key = max; |
991 |
|
992 |
// BitSet should support this! Test would run much faster |
993 |
while (key >= min) { |
994 |
if (bs.get(key)) |
995 |
return key; |
996 |
key--; |
997 |
} |
998 |
return -1; |
999 |
} |
1000 |
int ceilingAscending(int key) { |
1001 |
if (key < min) |
1002 |
key = min; |
1003 |
else if (key > max) |
1004 |
return -1; |
1005 |
int result = bs.nextSetBit(key); |
1006 |
return result > max ? -1 : result; |
1007 |
} |
1008 |
int higherAscending(int key) { |
1009 |
return ceilingAscending(key + 1); |
1010 |
} |
1011 |
private int firstAscending() { |
1012 |
int result = ceilingAscending(min); |
1013 |
return result > max ? -1 : result; |
1014 |
} |
1015 |
private int lastAscending() { |
1016 |
int result = floorAscending(max); |
1017 |
return result < min ? -1 : result; |
1018 |
} |
1019 |
} |
1020 |
ReferenceSet rs = new ReferenceSet(); |
1021 |
|
1022 |
// Test contents using containsKey |
1023 |
int size = 0; |
1024 |
for (int i = min; i <= max; i++) { |
1025 |
boolean bsContainsI = bs.get(i); |
1026 |
assertEquals(bsContainsI, map.containsKey(i)); |
1027 |
if (bsContainsI) |
1028 |
size++; |
1029 |
} |
1030 |
assertEquals(map.size(), size); |
1031 |
|
1032 |
// Test contents using contains keySet iterator |
1033 |
int size2 = 0; |
1034 |
int previousKey = -1; |
1035 |
for (int key : map.keySet()) { |
1036 |
assertTrue(bs.get(key)); |
1037 |
size2++; |
1038 |
assertTrue(previousKey < 0 || |
1039 |
(ascending ? key - previousKey > 0 : key - previousKey < 0)); |
1040 |
previousKey = key; |
1041 |
} |
1042 |
assertEquals(size2, size); |
1043 |
|
1044 |
// Test navigation ops |
1045 |
for (int key = min - 1; key <= max + 1; key++) { |
1046 |
assertEq(map.lowerKey(key), rs.lower(key)); |
1047 |
assertEq(map.floorKey(key), rs.floor(key)); |
1048 |
assertEq(map.higherKey(key), rs.higher(key)); |
1049 |
assertEq(map.ceilingKey(key), rs.ceiling(key)); |
1050 |
} |
1051 |
|
1052 |
// Test extrema |
1053 |
if (map.size() != 0) { |
1054 |
assertEq(map.firstKey(), rs.first()); |
1055 |
assertEq(map.lastKey(), rs.last()); |
1056 |
} else { |
1057 |
assertEq(rs.first(), -1); |
1058 |
assertEq(rs.last(), -1); |
1059 |
try { |
1060 |
map.firstKey(); |
1061 |
shouldThrow(); |
1062 |
} catch (NoSuchElementException success) {} |
1063 |
try { |
1064 |
map.lastKey(); |
1065 |
shouldThrow(); |
1066 |
} catch (NoSuchElementException success) {} |
1067 |
} |
1068 |
} |
1069 |
|
1070 |
static void assertEq(Integer i, int j) { |
1071 |
if (i == null) |
1072 |
assertEquals(j, -1); |
1073 |
else |
1074 |
assertEquals((int) i, j); |
1075 |
} |
1076 |
|
1077 |
static boolean eq(Integer i, int j) { |
1078 |
return i == null ? j == -1 : i == j; |
1079 |
} |
1080 |
|
1081 |
} |