test/tck/ConcurrentSkipListSubMapTest.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/licenses/publicdomain
 */

import junit.framework.*;
import java.util.*;
import java.util.concurrent.*;
import java.io.*;

public class ConcurrentSkipListSubMapTest extends JSR166TestCase {
    public static void main(String[] args) {
        junit.textui.TestRunner.run (suite());  
    }
    public static Test suite() {
        return new TestSuite(ConcurrentSkipListSubMapTest.class);
    }

    /**
     * Create a map from Integers 1-5 to Strings "A"-"E".
     */
    private static ConcurrentNavigableMap map5() {   
        ConcurrentSkipListMap map = new ConcurrentSkipListMap();
        assertTrue(map.isEmpty());
        map.put(zero, "Z");
        map.put(one, "A");
        map.put(five, "E");
        map.put(three, "C");
        map.put(two, "B");
        map.put(four, "D");
        map.put(seven, "F");
        assertFalse(map.isEmpty());
        assertEquals(7, map.size());
        return map.navigableSubMap(one, true, seven, false);
    }

    private static ConcurrentNavigableMap map0() {   
        ConcurrentSkipListMap map = new ConcurrentSkipListMap();
        assertTrue(map.isEmpty());
        return map.navigableTailMap(one, true);
    }

    /**
     *  clear removes all pairs
     */
    public void testClear() {
        ConcurrentNavigableMap map = map5();
        map.clear();
        assertEquals(map.size(), 0);
    }


    /**
     *  Maps with same contents are equal
     */
    public void testEquals() {
        ConcurrentNavigableMap map1 = map5();
        ConcurrentNavigableMap map2 = map5();
        assertEquals(map1, map2);
        assertEquals(map2, map1);
        map1.clear();
        assertFalse(map1.equals(map2));
        assertFalse(map2.equals(map1));
    }

    /**
     *  containsKey returns true for contained key
     */
    public void testContainsKey() {
        ConcurrentNavigableMap map = map5();
        assertTrue(map.containsKey(one));
        assertFalse(map.containsKey(zero));
    }

    /**
     *  containsValue returns true for held values
     */
    public void testContainsValue() {
        ConcurrentNavigableMap map = map5();
        assertTrue(map.containsValue("A"));
        assertFalse(map.containsValue("Z"));
    }

    /**
     *  get returns the correct element at the given key,
     *  or null if not present
     */
    public void testGet() {
        ConcurrentNavigableMap map = map5();
        assertEquals("A", (String)map.get(one));
        ConcurrentNavigableMap empty = map0();
        assertNull(empty.get(one));
    }

    /**
     *  isEmpty is true of empty map and false for non-empty
     */
    public void testIsEmpty() {
        ConcurrentNavigableMap empty = map0();
        ConcurrentNavigableMap map = map5();
        assertTrue(empty.isEmpty());
        assertFalse(map.isEmpty());
    }

    /**
     *   firstKey returns first key
     */
    public void testFirstKey() {
        ConcurrentNavigableMap map = map5();
        assertEquals(one, map.firstKey());
    }

    /**
     *   lastKey returns last key
     */
    public void testLastKey() {
        ConcurrentNavigableMap map = map5();
        assertEquals(five, map.lastKey());
    }


    /**
     *   keySet returns a Set containing all the keys
     */
    public void testKeySet() {
        ConcurrentNavigableMap map = map5();
        Set s = map.keySet();
        assertEquals(5, s.size());
        assertTrue(s.contains(one));
        assertTrue(s.contains(two));
        assertTrue(s.contains(three));
        assertTrue(s.contains(four));
        assertTrue(s.contains(five));
    }

    /**
     *   keySet is ordered
     */
    public void testKeySetOrder() {
        ConcurrentNavigableMap map = map5();
        Set s = map.keySet();
        Iterator i = s.iterator();
        Integer last = (Integer)i.next();
        assertEquals(last, one);
        while (i.hasNext()) {
            Integer k = (Integer)i.next();
            assertTrue(last.compareTo(k) < 0);
            last = k;
        }
    }

    /**
     * values collection contains all values
     */
    public void testValues() {
        ConcurrentNavigableMap map = map5();
        Collection s = map.values();
        assertEquals(5, s.size());
        assertTrue(s.contains("A"));
        assertTrue(s.contains("B"));
        assertTrue(s.contains("C"));
        assertTrue(s.contains("D"));
        assertTrue(s.contains("E"));
    }

    /**
     *  keySet.toArray returns contains all keys
     */
    public void testKeySetToArray() {
        ConcurrentNavigableMap map = map5();
        Set s = map.keySet();
        Object[] ar = s.toArray();
        assertTrue(s.containsAll(Arrays.asList(ar)));
        assertEquals(5, ar.length);
        ar[0] = m10;
        assertFalse(s.containsAll(Arrays.asList(ar)));
    }

    /**
     *  descendingkeySet.toArray returns contains all keys
     */
    public void testDescendingKeySetToArray() {
        ConcurrentNavigableMap map = map5();
        Set s = map.descendingKeySet();
        Object[] ar = s.toArray();
        assertEquals(5, ar.length);
        assertTrue(s.containsAll(Arrays.asList(ar)));
        ar[0] = m10;
        assertFalse(s.containsAll(Arrays.asList(ar)));
    }

    /**
     *  Values.toArray contains all values
     */
    public void testValuesToArray() {
        ConcurrentNavigableMap map = map5();
        Collection v = map.values();
        Object[] ar = v.toArray();
        ArrayList s = new ArrayList(Arrays.asList(ar));
        assertEquals(5, ar.length);
        assertTrue(s.contains("A"));
        assertTrue(s.contains("B"));
        assertTrue(s.contains("C"));
        assertTrue(s.contains("D"));
        assertTrue(s.contains("E"));
    }


    /**
     * entrySet contains all pairs
     */
    public void testEntrySet() {
        ConcurrentNavigableMap map = map5();
        Set s = map.entrySet();
        assertEquals(5, s.size());
        Iterator it = s.iterator();
        while (it.hasNext()) {
            Map.Entry e = (Map.Entry) it.next();
            assertTrue( 
                       (e.getKey().equals(one) && e.getValue().equals("A")) ||
                       (e.getKey().equals(two) && e.getValue().equals("B")) ||
                       (e.getKey().equals(three) && e.getValue().equals("C")) ||
                       (e.getKey().equals(four) && e.getValue().equals("D")) ||
                       (e.getKey().equals(five) && e.getValue().equals("E")));
        }
    }

    /**
     *   putAll  adds all key-value pairs from the given map
     */
    public void testPutAll() {
        ConcurrentNavigableMap empty = map0();
        ConcurrentNavigableMap map = map5();
        empty.putAll(map);
        assertEquals(5, empty.size());
        assertTrue(empty.containsKey(one));
        assertTrue(empty.containsKey(two));
        assertTrue(empty.containsKey(three));
        assertTrue(empty.containsKey(four));
        assertTrue(empty.containsKey(five));
    }

    /**
     *   putIfAbsent works when the given key is not present
     */
    public void testPutIfAbsent() {
        ConcurrentNavigableMap map = map5();
        map.putIfAbsent(six, "Z");
        assertTrue(map.containsKey(six));
    }

    /**
     *   putIfAbsent does not add the pair if the key is already present
     */
    public void testPutIfAbsent2() {
        ConcurrentNavigableMap map = map5();
        assertEquals("A", map.putIfAbsent(one, "Z"));
    }

    /**
     *   replace fails when the given key is not present
     */
    public void testReplace() {
        ConcurrentNavigableMap map = map5();
        assertNull(map.replace(six, "Z"));
        assertFalse(map.containsKey(six));
    }

    /**
     *   replace succeeds if the key is already present
     */
    public void testReplace2() {
        ConcurrentNavigableMap map = map5();
        assertNotNull(map.replace(one, "Z"));
        assertEquals("Z", map.get(one));
    }


    /**
     * replace value fails when the given key not mapped to expected value
     */
    public void testReplaceValue() {
        ConcurrentNavigableMap map = map5();
        assertEquals("A", map.get(one));
        assertFalse(map.replace(one, "Z", "Z"));
        assertEquals("A", map.get(one));
    }

    /**
     * replace value succeeds when the given key mapped to expected value
     */
    public void testReplaceValue2() {
        ConcurrentNavigableMap map = map5();
        assertEquals("A", map.get(one));
        assertTrue(map.replace(one, "A", "Z"));
        assertEquals("Z", map.get(one));
    }


    /**
     *   remove removes the correct key-value pair from the map
     */
    public void testRemove() {
        ConcurrentNavigableMap map = map5();
        map.remove(five);
        assertEquals(4, map.size());
        assertFalse(map.containsKey(five));
    }

    /**
     * remove(key,value) removes only if pair present
     */
    public void testRemove2() {
        ConcurrentNavigableMap map = map5();
        assertTrue(map.containsKey(five));
        assertEquals("E", map.get(five));
        map.remove(five, "E");
        assertEquals(4, map.size());
        assertFalse(map.containsKey(five));
        map.remove(four, "A");
        assertEquals(4, map.size());
        assertTrue(map.containsKey(four));

    }

    /**
     * lowerEntry returns preceding entry.
     */
    public void testLowerEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e1 = map.lowerEntry(three);
        assertEquals(two, e1.getKey());

        Map.Entry e2 = map.lowerEntry(six);
        assertEquals(five, e2.getKey());

        Map.Entry e3 = map.lowerEntry(one);
        assertNull(e3);

        Map.Entry e4 = map.lowerEntry(zero);
        assertNull(e4);

    }

    /**
     * higherEntry returns next entry.
     */
    public void testHigherEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e1 = map.higherEntry(three);
        assertEquals(four, e1.getKey());

        Map.Entry e2 = map.higherEntry(zero);
        assertEquals(one, e2.getKey());

        Map.Entry e3 = map.higherEntry(five);
        assertNull(e3);

        Map.Entry e4 = map.higherEntry(six);
        assertNull(e4);

    }

    /**
     * floorEntry returns preceding entry.
     */
    public void testFloorEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e1 = map.floorEntry(three);
        assertEquals(three, e1.getKey());

        Map.Entry e2 = map.floorEntry(six);
        assertEquals(five, e2.getKey());

        Map.Entry e3 = map.floorEntry(one);
        assertEquals(one, e3.getKey());

        Map.Entry e4 = map.floorEntry(zero);
        assertNull(e4);

    }

    /**
     * ceilingEntry returns next entry.
     */
    public void testCeilingEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e1 = map.ceilingEntry(three);
        assertEquals(three, e1.getKey());

        Map.Entry e2 = map.ceilingEntry(zero);
        assertEquals(one, e2.getKey());

        Map.Entry e3 = map.ceilingEntry(five);
        assertEquals(five, e3.getKey());

        Map.Entry e4 = map.ceilingEntry(six);
        assertNull(e4);

    }

    /**
     * pollFirstEntry returns entries in order
     */
    public void testPollFirstEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e = map.pollFirstEntry();
        assertEquals(one, e.getKey());
        assertEquals("A", e.getValue());
        e = map.pollFirstEntry();
        assertEquals(two, e.getKey());
        map.put(one, "A");
        e = map.pollFirstEntry();
        assertEquals(one, e.getKey());
        assertEquals("A", e.getValue());
        e = map.pollFirstEntry();
        assertEquals(three, e.getKey());
        map.remove(four);
        e = map.pollFirstEntry();
        assertEquals(five, e.getKey());
        try {
            e.setValue("A");
            shouldThrow();
        } catch (Exception ok) {
        }
        e = map.pollFirstEntry();
        assertNull(e);
    }

    /**
     * pollLastEntry returns entries in order
     */
    public void testPollLastEntry() {
        ConcurrentNavigableMap map = map5();
        Map.Entry e = map.pollLastEntry();
        assertEquals(five, e.getKey());
        assertEquals("E", e.getValue());
        e = map.pollLastEntry();
        assertEquals(four, e.getKey());
        map.put(five, "E");
        e = map.pollLastEntry();
        assertEquals(five, e.getKey());
        assertEquals("E", e.getValue());
        e = map.pollLastEntry();
        assertEquals(three, e.getKey());
        map.remove(two);
        e = map.pollLastEntry();
        assertEquals(one, e.getKey());
        try {
            e.setValue("E");
            shouldThrow();
        } catch (Exception ok) {
        }
        e = map.pollLastEntry();
        assertNull(e);
    }

    /**
     *   size returns the correct values
     */
    public void testSize() {
        ConcurrentNavigableMap map = map5();
        ConcurrentNavigableMap empty = map0();
        assertEquals(0, empty.size());
        assertEquals(5, map.size());
    }

    /**
     * toString contains toString of elements
     */
    public void testToString() {
        ConcurrentNavigableMap map = map5();
        String s = map.toString();
        for (int i = 1; i <= 5; ++i) {
            assertTrue(s.indexOf(String.valueOf(i)) >= 0);
        }
    }        

    // Exception tests

    /**
     * get(null) of nonempty map throws NPE
     */
    public void testGet_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.get(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * containsKey(null) of nonempty map throws NPE
     */
    public void testContainsKey_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.containsKey(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * containsValue(null) throws NPE
     */
    public void testContainsValue_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map0();
            c.containsValue(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }


    /**
     * put(null,x) throws NPE
     */
    public void testPut1_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.put(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * putIfAbsent(null, x) throws NPE
     */
    public void testPutIfAbsent1_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.putIfAbsent(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(null, x) throws NPE
     */
    public void testReplace_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.replace(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(null, x, y) throws NPE
     */
    public void testReplaceValue_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.replace(null, one, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * remove(null) throws NPE
     */
    public void testRemove1_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.remove(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * remove(null, x) throws NPE
     */
    public void testRemove2_NullPointerException() {
        try {
            ConcurrentNavigableMap c = map5();
            c.remove(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * A deserialized map equals original
     */
    public void testSerialization() {
        ConcurrentNavigableMap q = map5();

        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
            ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
            out.writeObject(q);
            out.close();

            ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
            ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
            ConcurrentNavigableMap r = (ConcurrentNavigableMap)in.readObject();
            assertEquals(q.size(), r.size());
            assertTrue(q.equals(r));
            assertTrue(r.equals(q));
        } catch(Exception e){
            e.printStackTrace();
            unexpectedException();
        }
    }


    /**
     * subMap returns map with keys in requested range
     */
    public void testSubMapContents() {
        ConcurrentNavigableMap map = map5();
        SortedMap sm = map.subMap(two, four);
        assertEquals(two, sm.firstKey());
        assertEquals(three, sm.lastKey());
        assertEquals(2, sm.size());
        assertFalse(sm.containsKey(one));
        assertTrue(sm.containsKey(two));
        assertTrue(sm.containsKey(three));
        assertFalse(sm.containsKey(four));
        assertFalse(sm.containsKey(five));
        Iterator i = sm.keySet().iterator();
        Object k;
        k = (Integer)(i.next());
        assertEquals(two, k);
        k = (Integer)(i.next());
        assertEquals(three, k);
        assertFalse(i.hasNext());
        Iterator j = sm.keySet().iterator();
        j.next();
        j.remove();
        assertFalse(map.containsKey(two));
        assertEquals(4, map.size());
        assertEquals(1, sm.size());
        assertEquals(three, sm.firstKey());
        assertEquals(three, sm.lastKey());
        assertTrue(sm.remove(three) != null);
        assertTrue(sm.isEmpty());
        assertEquals(3, map.size());
    }

    public void testSubMapContents2() {
        ConcurrentNavigableMap map = map5();
        SortedMap sm = map.subMap(two, three);
        assertEquals(1, sm.size());
        assertEquals(two, sm.firstKey());
        assertEquals(two, sm.lastKey());
        assertFalse(sm.containsKey(one));
        assertTrue(sm.containsKey(two));
        assertFalse(sm.containsKey(three));
        assertFalse(sm.containsKey(four));
        assertFalse(sm.containsKey(five));
        Iterator i = sm.keySet().iterator();
        Object k;
        k = (Integer)(i.next());
        assertEquals(two, k);
        assertFalse(i.hasNext());
        Iterator j = sm.keySet().iterator();
        j.next();
        j.remove();
        assertFalse(map.containsKey(two));
        assertEquals(4, map.size());
        assertEquals(0, sm.size());
        assertTrue(sm.isEmpty());
        assertTrue(sm.remove(three) == null);
        assertEquals(4, map.size());
    }

    /**
     * headMap returns map with keys in requested range
     */
    public void testHeadMapContents() {
        ConcurrentNavigableMap map = map5();
        SortedMap sm = map.headMap(four);
        assertTrue(sm.containsKey(one));
        assertTrue(sm.containsKey(two));
        assertTrue(sm.containsKey(three));
        assertFalse(sm.containsKey(four));
        assertFalse(sm.containsKey(five));
        Iterator i = sm.keySet().iterator();
        Object k;
        k = (Integer)(i.next());
        assertEquals(one, k);
        k = (Integer)(i.next());
        assertEquals(two, k);
        k = (Integer)(i.next());
        assertEquals(three, k);
        assertFalse(i.hasNext());
        sm.clear();
        assertTrue(sm.isEmpty());
        assertEquals(2, map.size());
        assertEquals(four, map.firstKey());
    }

    /**
     * headMap returns map with keys in requested range
     */
    public void testTailMapContents() {
        ConcurrentNavigableMap map = map5();
        SortedMap sm = map.tailMap(two);
        assertFalse(sm.containsKey(one));
        assertTrue(sm.containsKey(two));
        assertTrue(sm.containsKey(three));
        assertTrue(sm.containsKey(four));
        assertTrue(sm.containsKey(five));
        Iterator i = sm.keySet().iterator();
        Object k;
        k = (Integer)(i.next());
        assertEquals(two, k);
        k = (Integer)(i.next());
        assertEquals(three, k);
        k = (Integer)(i.next());
        assertEquals(four, k);
        k = (Integer)(i.next());
        assertEquals(five, k);
        assertFalse(i.hasNext());

        Iterator ei = sm.entrySet().iterator();
        Map.Entry e;
        e = (Map.Entry)(ei.next());
        assertEquals(two, e.getKey());
        assertEquals("B", e.getValue());
        e = (Map.Entry)(ei.next());
        assertEquals(three, e.getKey());
        assertEquals("C", e.getValue());
        e = (Map.Entry)(ei.next());
        assertEquals(four, e.getKey());
        assertEquals("D", e.getValue());
        e = (Map.Entry)(ei.next());
        assertEquals(five, e.getKey());
        assertEquals("E", e.getValue());
        assertFalse(i.hasNext());

        SortedMap ssm = sm.tailMap(four);
        assertEquals(four, ssm.firstKey());
        assertEquals(five, ssm.lastKey());
        assertTrue(ssm.remove(four) != null);
        assertEquals(1, ssm.size());
        assertEquals(3, sm.size());
        assertEquals(4, map.size());
    }
    
}
Revision:	1.4
Committed:	Wed Apr 19 15:10:54 2006 UTC (18 years ago) by dl
Branch:	MAIN
Changes since 1.3:	+2 -2 lines
Log Message:	Updated Navigable tests
#	User	Rev	Content
1	dl	1.1	/*
2			* Written by Doug Lea with assistance from members of JCP JSR-166
3			* Expert Group and released to the public domain, as explained at
4			* http://creativecommons.org/licenses/publicdomain
5			*/
6
7			import junit.framework.*;
8			import java.util.*;
9			import java.util.concurrent.*;
10			import java.io.*;
11
12			public class ConcurrentSkipListSubMapTest extends JSR166TestCase {
13			public static void main(String[] args) {
14			junit.textui.TestRunner.run (suite());
15			}
16			public static Test suite() {
17			return new TestSuite(ConcurrentSkipListSubMapTest.class);
18			}
19
20			/**
21			* Create a map from Integers 1-5 to Strings "A"-"E".
22			*/
23			private static ConcurrentNavigableMap map5() {
24			ConcurrentSkipListMap map = new ConcurrentSkipListMap();
25			assertTrue(map.isEmpty());
26			map.put(zero, "Z");
27			map.put(one, "A");
28			map.put(five, "E");
29			map.put(three, "C");
30			map.put(two, "B");
31			map.put(four, "D");
32			map.put(seven, "F");
33			assertFalse(map.isEmpty());
34			assertEquals(7, map.size());
35	dl	1.4	return map.navigableSubMap(one, true, seven, false);
36	dl	1.1	}
37
38			private static ConcurrentNavigableMap map0() {
39			ConcurrentSkipListMap map = new ConcurrentSkipListMap();
40			assertTrue(map.isEmpty());
41	dl	1.4	return map.navigableTailMap(one, true);
42	dl	1.1	}
43
44			/**
45			* clear removes all pairs
46			*/
47			public void testClear() {
48			ConcurrentNavigableMap map = map5();
49			map.clear();
50			assertEquals(map.size(), 0);
51			}
52
53
54			/**
55			* Maps with same contents are equal
56			*/
57			public void testEquals() {
58			ConcurrentNavigableMap map1 = map5();
59			ConcurrentNavigableMap map2 = map5();
60			assertEquals(map1, map2);
61			assertEquals(map2, map1);
62			map1.clear();
63			assertFalse(map1.equals(map2));
64			assertFalse(map2.equals(map1));
65			}
66
67			/**
68			* containsKey returns true for contained key
69			*/
70			public void testContainsKey() {
71			ConcurrentNavigableMap map = map5();
72			assertTrue(map.containsKey(one));
73			assertFalse(map.containsKey(zero));
74			}
75
76			/**
77			* containsValue returns true for held values
78			*/
79			public void testContainsValue() {
80			ConcurrentNavigableMap map = map5();
81			assertTrue(map.containsValue("A"));
82			assertFalse(map.containsValue("Z"));
83			}
84
85			/**
86			* get returns the correct element at the given key,
87			* or null if not present
88			*/
89			public void testGet() {
90			ConcurrentNavigableMap map = map5();
91			assertEquals("A", (String)map.get(one));
92			ConcurrentNavigableMap empty = map0();
93			assertNull(empty.get(one));
94			}
95
96			/**
97			* isEmpty is true of empty map and false for non-empty
98			*/
99			public void testIsEmpty() {
100			ConcurrentNavigableMap empty = map0();
101			ConcurrentNavigableMap map = map5();
102			assertTrue(empty.isEmpty());
103			assertFalse(map.isEmpty());
104			}
105
106			/**
107			* firstKey returns first key
108			*/
109			public void testFirstKey() {
110			ConcurrentNavigableMap map = map5();
111			assertEquals(one, map.firstKey());
112			}
113
114			/**
115			* lastKey returns last key
116			*/
117			public void testLastKey() {
118			ConcurrentNavigableMap map = map5();
119			assertEquals(five, map.lastKey());
120			}
121
122
123			/**
124			* keySet returns a Set containing all the keys
125			*/
126			public void testKeySet() {
127			ConcurrentNavigableMap map = map5();
128			Set s = map.keySet();
129			assertEquals(5, s.size());
130			assertTrue(s.contains(one));
131			assertTrue(s.contains(two));
132			assertTrue(s.contains(three));
133			assertTrue(s.contains(four));
134			assertTrue(s.contains(five));
135			}
136
137			/**
138			* keySet is ordered
139			*/
140			public void testKeySetOrder() {
141			ConcurrentNavigableMap map = map5();
142			Set s = map.keySet();
143			Iterator i = s.iterator();
144			Integer last = (Integer)i.next();
145			assertEquals(last, one);
146			while (i.hasNext()) {
147			Integer k = (Integer)i.next();
148			assertTrue(last.compareTo(k) < 0);
149			last = k;
150			}
151			}
152
153			/**
154			* values collection contains all values
155			*/
156			public void testValues() {
157			ConcurrentNavigableMap map = map5();
158			Collection s = map.values();
159			assertEquals(5, s.size());
160			assertTrue(s.contains("A"));
161			assertTrue(s.contains("B"));
162			assertTrue(s.contains("C"));
163			assertTrue(s.contains("D"));
164			assertTrue(s.contains("E"));
165			}
166
167			/**
168	dl	1.3	* keySet.toArray returns contains all keys
169			*/
170			public void testKeySetToArray() {
171			ConcurrentNavigableMap map = map5();
172			Set s = map.keySet();
173			Object[] ar = s.toArray();
174			assertTrue(s.containsAll(Arrays.asList(ar)));
175			assertEquals(5, ar.length);
176			ar[0] = m10;
177			assertFalse(s.containsAll(Arrays.asList(ar)));
178			}
179
180			/**
181			* descendingkeySet.toArray returns contains all keys
182			*/
183			public void testDescendingKeySetToArray() {
184			ConcurrentNavigableMap map = map5();
185			Set s = map.descendingKeySet();
186			Object[] ar = s.toArray();
187			assertEquals(5, ar.length);
188			assertTrue(s.containsAll(Arrays.asList(ar)));
189			ar[0] = m10;
190			assertFalse(s.containsAll(Arrays.asList(ar)));
191			}
192
193			/**
194			* Values.toArray contains all values
195			*/
196			public void testValuesToArray() {
197			ConcurrentNavigableMap map = map5();
198			Collection v = map.values();
199			Object[] ar = v.toArray();
200			ArrayList s = new ArrayList(Arrays.asList(ar));
201			assertEquals(5, ar.length);
202			assertTrue(s.contains("A"));
203			assertTrue(s.contains("B"));
204			assertTrue(s.contains("C"));
205			assertTrue(s.contains("D"));
206			assertTrue(s.contains("E"));
207			}
208
209
210			/**
211	dl	1.1	* entrySet contains all pairs
212			*/
213			public void testEntrySet() {
214			ConcurrentNavigableMap map = map5();
215			Set s = map.entrySet();
216			assertEquals(5, s.size());
217			Iterator it = s.iterator();
218			while (it.hasNext()) {
219			Map.Entry e = (Map.Entry) it.next();
220			assertTrue(
221			(e.getKey().equals(one) && e.getValue().equals("A")) \|\|
222			(e.getKey().equals(two) && e.getValue().equals("B")) \|\|
223			(e.getKey().equals(three) && e.getValue().equals("C")) \|\|
224			(e.getKey().equals(four) && e.getValue().equals("D")) \|\|
225			(e.getKey().equals(five) && e.getValue().equals("E")));
226			}
227			}
228
229			/**
230			* putAll adds all key-value pairs from the given map
231			*/
232			public void testPutAll() {
233			ConcurrentNavigableMap empty = map0();
234			ConcurrentNavigableMap map = map5();
235			empty.putAll(map);
236			assertEquals(5, empty.size());
237			assertTrue(empty.containsKey(one));
238			assertTrue(empty.containsKey(two));
239			assertTrue(empty.containsKey(three));
240			assertTrue(empty.containsKey(four));
241			assertTrue(empty.containsKey(five));
242			}
243
244			/**
245			* putIfAbsent works when the given key is not present
246			*/
247			public void testPutIfAbsent() {
248			ConcurrentNavigableMap map = map5();
249			map.putIfAbsent(six, "Z");
250			assertTrue(map.containsKey(six));
251			}
252
253			/**
254			* putIfAbsent does not add the pair if the key is already present
255			*/
256			public void testPutIfAbsent2() {
257			ConcurrentNavigableMap map = map5();
258			assertEquals("A", map.putIfAbsent(one, "Z"));
259			}
260
261			/**
262			* replace fails when the given key is not present
263			*/
264			public void testReplace() {
265			ConcurrentNavigableMap map = map5();
266			assertNull(map.replace(six, "Z"));
267			assertFalse(map.containsKey(six));
268			}
269
270			/**
271			* replace succeeds if the key is already present
272			*/
273			public void testReplace2() {
274			ConcurrentNavigableMap map = map5();
275			assertNotNull(map.replace(one, "Z"));
276			assertEquals("Z", map.get(one));
277			}
278
279
280			/**
281			* replace value fails when the given key not mapped to expected value
282			*/
283			public void testReplaceValue() {
284			ConcurrentNavigableMap map = map5();
285			assertEquals("A", map.get(one));
286			assertFalse(map.replace(one, "Z", "Z"));
287			assertEquals("A", map.get(one));
288			}
289
290			/**
291			* replace value succeeds when the given key mapped to expected value
292			*/
293			public void testReplaceValue2() {
294			ConcurrentNavigableMap map = map5();
295			assertEquals("A", map.get(one));
296			assertTrue(map.replace(one, "A", "Z"));
297			assertEquals("Z", map.get(one));
298			}
299
300
301			/**
302			* remove removes the correct key-value pair from the map
303			*/
304			public void testRemove() {
305			ConcurrentNavigableMap map = map5();
306			map.remove(five);
307			assertEquals(4, map.size());
308			assertFalse(map.containsKey(five));
309			}
310
311			/**
312			* remove(key,value) removes only if pair present
313			*/
314			public void testRemove2() {
315			ConcurrentNavigableMap map = map5();
316			assertTrue(map.containsKey(five));
317			assertEquals("E", map.get(five));
318			map.remove(five, "E");
319			assertEquals(4, map.size());
320			assertFalse(map.containsKey(five));
321			map.remove(four, "A");
322			assertEquals(4, map.size());
323			assertTrue(map.containsKey(four));
324
325			}
326
327			/**
328			* lowerEntry returns preceding entry.
329			*/
330			public void testLowerEntry() {
331			ConcurrentNavigableMap map = map5();
332			Map.Entry e1 = map.lowerEntry(three);
333			assertEquals(two, e1.getKey());
334
335			Map.Entry e2 = map.lowerEntry(six);
336			assertEquals(five, e2.getKey());
337
338			Map.Entry e3 = map.lowerEntry(one);
339			assertNull(e3);
340
341			Map.Entry e4 = map.lowerEntry(zero);
342			assertNull(e4);
343
344			}
345
346			/**
347			* higherEntry returns next entry.
348			*/
349			public void testHigherEntry() {
350			ConcurrentNavigableMap map = map5();
351			Map.Entry e1 = map.higherEntry(three);
352			assertEquals(four, e1.getKey());
353
354			Map.Entry e2 = map.higherEntry(zero);
355			assertEquals(one, e2.getKey());
356
357			Map.Entry e3 = map.higherEntry(five);
358			assertNull(e3);
359
360			Map.Entry e4 = map.higherEntry(six);
361			assertNull(e4);
362
363			}
364
365			/**
366			* floorEntry returns preceding entry.
367			*/
368			public void testFloorEntry() {
369			ConcurrentNavigableMap map = map5();
370			Map.Entry e1 = map.floorEntry(three);
371			assertEquals(three, e1.getKey());
372
373			Map.Entry e2 = map.floorEntry(six);
374			assertEquals(five, e2.getKey());
375
376			Map.Entry e3 = map.floorEntry(one);
377			assertEquals(one, e3.getKey());
378
379			Map.Entry e4 = map.floorEntry(zero);
380			assertNull(e4);
381
382			}
383
384			/**
385			* ceilingEntry returns next entry.
386			*/
387			public void testCeilingEntry() {
388			ConcurrentNavigableMap map = map5();
389			Map.Entry e1 = map.ceilingEntry(three);
390			assertEquals(three, e1.getKey());
391
392			Map.Entry e2 = map.ceilingEntry(zero);
393			assertEquals(one, e2.getKey());
394
395			Map.Entry e3 = map.ceilingEntry(five);
396			assertEquals(five, e3.getKey());
397
398			Map.Entry e4 = map.ceilingEntry(six);
399			assertNull(e4);
400
401			}
402
403			/**
404			* pollFirstEntry returns entries in order
405			*/
406			public void testPollFirstEntry() {
407			ConcurrentNavigableMap map = map5();
408			Map.Entry e = map.pollFirstEntry();
409			assertEquals(one, e.getKey());
410			assertEquals("A", e.getValue());
411			e = map.pollFirstEntry();
412			assertEquals(two, e.getKey());
413			map.put(one, "A");
414			e = map.pollFirstEntry();
415			assertEquals(one, e.getKey());
416			assertEquals("A", e.getValue());
417			e = map.pollFirstEntry();
418			assertEquals(three, e.getKey());
419			map.remove(four);
420			e = map.pollFirstEntry();
421			assertEquals(five, e.getKey());
422			try {
423			e.setValue("A");
424			shouldThrow();
425			} catch (Exception ok) {
426			}
427			e = map.pollFirstEntry();
428			assertNull(e);
429			}
430
431			/**
432			* pollLastEntry returns entries in order
433			*/
434			public void testPollLastEntry() {
435			ConcurrentNavigableMap map = map5();
436			Map.Entry e = map.pollLastEntry();
437			assertEquals(five, e.getKey());
438			assertEquals("E", e.getValue());
439			e = map.pollLastEntry();
440			assertEquals(four, e.getKey());
441			map.put(five, "E");
442			e = map.pollLastEntry();
443			assertEquals(five, e.getKey());
444			assertEquals("E", e.getValue());
445			e = map.pollLastEntry();
446			assertEquals(three, e.getKey());
447			map.remove(two);
448			e = map.pollLastEntry();
449			assertEquals(one, e.getKey());
450			try {
451			e.setValue("E");
452			shouldThrow();
453			} catch (Exception ok) {
454			}
455			e = map.pollLastEntry();
456			assertNull(e);
457			}
458
459			/**
460			* size returns the correct values
461			*/
462			public void testSize() {
463			ConcurrentNavigableMap map = map5();
464			ConcurrentNavigableMap empty = map0();
465			assertEquals(0, empty.size());
466			assertEquals(5, map.size());
467			}
468
469			/**
470			* toString contains toString of elements
471			*/
472			public void testToString() {
473			ConcurrentNavigableMap map = map5();
474			String s = map.toString();
475			for (int i = 1; i <= 5; ++i) {
476			assertTrue(s.indexOf(String.valueOf(i)) >= 0);
477			}
478			}
479
480			// Exception tests
481
482			/**
483			* get(null) of nonempty map throws NPE
484			*/
485			public void testGet_NullPointerException() {
486			try {
487			ConcurrentNavigableMap c = map5();
488			c.get(null);
489			shouldThrow();
490			} catch(NullPointerException e){}
491			}
492
493			/**
494			* containsKey(null) of nonempty map throws NPE
495			*/
496			public void testContainsKey_NullPointerException() {
497			try {
498			ConcurrentNavigableMap c = map5();
499			c.containsKey(null);
500			shouldThrow();
501			} catch(NullPointerException e){}
502			}
503
504			/**
505			* containsValue(null) throws NPE
506			*/
507			public void testContainsValue_NullPointerException() {
508			try {
509			ConcurrentNavigableMap c = map0();
510			c.containsValue(null);
511			shouldThrow();
512			} catch(NullPointerException e){}
513			}
514
515
516			/**
517			* put(null,x) throws NPE
518			*/
519			public void testPut1_NullPointerException() {
520			try {
521			ConcurrentNavigableMap c = map5();
522			c.put(null, "whatever");
523			shouldThrow();
524			} catch(NullPointerException e){}
525			}
526
527			/**
528			* putIfAbsent(null, x) throws NPE
529			*/
530			public void testPutIfAbsent1_NullPointerException() {
531			try {
532			ConcurrentNavigableMap c = map5();
533			c.putIfAbsent(null, "whatever");
534			shouldThrow();
535			} catch(NullPointerException e){}
536			}
537
538			/**
539			* replace(null, x) throws NPE
540			*/
541			public void testReplace_NullPointerException() {
542			try {
543			ConcurrentNavigableMap c = map5();
544			c.replace(null, "whatever");
545			shouldThrow();
546			} catch(NullPointerException e){}
547			}
548
549			/**
550			* replace(null, x, y) throws NPE
551			*/
552			public void testReplaceValue_NullPointerException() {
553			try {
554			ConcurrentNavigableMap c = map5();
555			c.replace(null, one, "whatever");
556			shouldThrow();
557			} catch(NullPointerException e){}
558			}
559
560			/**
561			* remove(null) throws NPE
562			*/
563			public void testRemove1_NullPointerException() {
564			try {
565			ConcurrentNavigableMap c = map5();
566			c.remove(null);
567			shouldThrow();
568			} catch(NullPointerException e){}
569			}
570
571			/**
572			* remove(null, x) throws NPE
573			*/
574			public void testRemove2_NullPointerException() {
575			try {
576			ConcurrentNavigableMap c = map5();
577			c.remove(null, "whatever");
578			shouldThrow();
579			} catch(NullPointerException e){}
580			}
581
582			/**
583			* A deserialized map equals original
584			*/
585			public void testSerialization() {
586			ConcurrentNavigableMap q = map5();
587
588			try {
589			ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
590			ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
591			out.writeObject(q);
592			out.close();
593
594			ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
595			ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
596			ConcurrentNavigableMap r = (ConcurrentNavigableMap)in.readObject();
597			assertEquals(q.size(), r.size());
598			assertTrue(q.equals(r));
599			assertTrue(r.equals(q));
600			} catch(Exception e){
601			e.printStackTrace();
602			unexpectedException();
603			}
604			}
605
606
607
608			/**
609			* subMap returns map with keys in requested range
610			*/
611			public void testSubMapContents() {
612			ConcurrentNavigableMap map = map5();
613			SortedMap sm = map.subMap(two, four);
614			assertEquals(two, sm.firstKey());
615			assertEquals(three, sm.lastKey());
616			assertEquals(2, sm.size());
617			assertFalse(sm.containsKey(one));
618			assertTrue(sm.containsKey(two));
619			assertTrue(sm.containsKey(three));
620			assertFalse(sm.containsKey(four));
621			assertFalse(sm.containsKey(five));
622			Iterator i = sm.keySet().iterator();
623			Object k;
624			k = (Integer)(i.next());
625			assertEquals(two, k);
626			k = (Integer)(i.next());
627			assertEquals(three, k);
628			assertFalse(i.hasNext());
629			Iterator j = sm.keySet().iterator();
630			j.next();
631			j.remove();
632			assertFalse(map.containsKey(two));
633			assertEquals(4, map.size());
634			assertEquals(1, sm.size());
635			assertEquals(three, sm.firstKey());
636			assertEquals(three, sm.lastKey());
637			assertTrue(sm.remove(three) != null);
638			assertTrue(sm.isEmpty());
639			assertEquals(3, map.size());
640			}
641
642			public void testSubMapContents2() {
643			ConcurrentNavigableMap map = map5();
644			SortedMap sm = map.subMap(two, three);
645			assertEquals(1, sm.size());
646			assertEquals(two, sm.firstKey());
647			assertEquals(two, sm.lastKey());
648			assertFalse(sm.containsKey(one));
649			assertTrue(sm.containsKey(two));
650			assertFalse(sm.containsKey(three));
651			assertFalse(sm.containsKey(four));
652			assertFalse(sm.containsKey(five));
653			Iterator i = sm.keySet().iterator();
654			Object k;
655			k = (Integer)(i.next());
656			assertEquals(two, k);
657			assertFalse(i.hasNext());
658			Iterator j = sm.keySet().iterator();
659			j.next();
660			j.remove();
661			assertFalse(map.containsKey(two));
662			assertEquals(4, map.size());
663			assertEquals(0, sm.size());
664			assertTrue(sm.isEmpty());
665			assertTrue(sm.remove(three) == null);
666			assertEquals(4, map.size());
667			}
668
669			/**
670			* headMap returns map with keys in requested range
671			*/
672			public void testHeadMapContents() {
673			ConcurrentNavigableMap map = map5();
674			SortedMap sm = map.headMap(four);
675			assertTrue(sm.containsKey(one));
676			assertTrue(sm.containsKey(two));
677			assertTrue(sm.containsKey(three));
678			assertFalse(sm.containsKey(four));
679			assertFalse(sm.containsKey(five));
680			Iterator i = sm.keySet().iterator();
681			Object k;
682			k = (Integer)(i.next());
683			assertEquals(one, k);
684			k = (Integer)(i.next());
685			assertEquals(two, k);
686			k = (Integer)(i.next());
687			assertEquals(three, k);
688			assertFalse(i.hasNext());
689			sm.clear();
690			assertTrue(sm.isEmpty());
691			assertEquals(2, map.size());
692			assertEquals(four, map.firstKey());
693			}
694
695			/**
696			* headMap returns map with keys in requested range
697			*/
698			public void testTailMapContents() {
699			ConcurrentNavigableMap map = map5();
700			SortedMap sm = map.tailMap(two);
701			assertFalse(sm.containsKey(one));
702			assertTrue(sm.containsKey(two));
703			assertTrue(sm.containsKey(three));
704			assertTrue(sm.containsKey(four));
705			assertTrue(sm.containsKey(five));
706			Iterator i = sm.keySet().iterator();
707			Object k;
708			k = (Integer)(i.next());
709			assertEquals(two, k);
710			k = (Integer)(i.next());
711			assertEquals(three, k);
712			k = (Integer)(i.next());
713			assertEquals(four, k);
714			k = (Integer)(i.next());
715			assertEquals(five, k);
716			assertFalse(i.hasNext());
717
718			Iterator ei = sm.entrySet().iterator();
719			Map.Entry e;
720			e = (Map.Entry)(ei.next());
721			assertEquals(two, e.getKey());
722			assertEquals("B", e.getValue());
723			e = (Map.Entry)(ei.next());
724			assertEquals(three, e.getKey());
725			assertEquals("C", e.getValue());
726			e = (Map.Entry)(ei.next());
727			assertEquals(four, e.getKey());
728			assertEquals("D", e.getValue());
729			e = (Map.Entry)(ei.next());
730			assertEquals(five, e.getKey());
731			assertEquals("E", e.getValue());
732			assertFalse(i.hasNext());
733
734			SortedMap ssm = sm.tailMap(four);
735			assertEquals(four, ssm.firstKey());
736			assertEquals(five, ssm.lastKey());
737			assertTrue(ssm.remove(four) != null);
738			assertEquals(1, ssm.size());
739			assertEquals(3, sm.size());
740			assertEquals(4, map.size());
741			}
742
743			}