test/tck/ConcurrentHashMapTest.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
 * Other contributors include Andrew Wright, Jeffrey Hayes, 
 * Pat Fisher, Mike Judd. 
 */

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

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

    /**
     * Create a map from Integers 1-5 to Strings "A"-"E".
     */
    private static ConcurrentHashMap map5() {   
        ConcurrentHashMap map = new ConcurrentHashMap(5);
        assertTrue(map.isEmpty());
        map.put(one, "A");
        map.put(two, "B");
        map.put(three, "C");
        map.put(four, "D");
        map.put(five, "E");
        assertFalse(map.isEmpty());
        assertEquals(5, map.size());
        return map;
    }

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

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

    /**
     *  contains returns true for contained value
     */
    public void testContains() {
        ConcurrentHashMap map = map5();
        assertTrue(map.contains("A"));
        assertFalse(map.contains("Z"));
    }
    
    /**
     *  containsKey returns true for contained key
     */
    public void testContainsKey() {
        ConcurrentHashMap map = map5();
        assertTrue(map.containsKey(one));
        assertFalse(map.containsKey(zero));
    }

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

    /**
     *   enumeration returns an enumeration containing the correct
     *   elements
     */
    public void testEnumeration() {
        ConcurrentHashMap map = map5();
        Enumeration e = map.elements();
        int count = 0;
        while(e.hasMoreElements()){
            count++;
            e.nextElement();
        }
        assertEquals(5, count);
    }

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

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

    /**
     *   keys returns an enumeration containing all the keys from the map
     */
    public void testKeys() {
        ConcurrentHashMap map = map5();
        Enumeration e = map.keys();
        int count = 0;
        while(e.hasMoreElements()){
            count++;
            e.nextElement();
        }
        assertEquals(5, count);
    }

    /**
     *   keySet returns a Set containing all the keys
     */
    public void testKeySet() {
        ConcurrentHashMap 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));
    }

    /**
     * values collection contains all values
     */
    public void testValues() {
        ConcurrentHashMap 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"));
    }

    /**
     * entrySet contains all pairs
     */
    public void testEntrySet() {
        ConcurrentHashMap 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() {
        ConcurrentHashMap empty = new ConcurrentHashMap();
        ConcurrentHashMap 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() {
        ConcurrentHashMap 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() {
        ConcurrentHashMap map = map5();
        assertEquals("A", map.putIfAbsent(one, "Z"));
    }

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

    /**
     *   replace succeeds if the key is already present
     */
    public void testReplace2() {
        ConcurrentHashMap 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() {
        ConcurrentHashMap 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() {
        ConcurrentHashMap 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() {
        ConcurrentHashMap map = map5();
        map.remove(five);
        assertEquals(4, map.size());
        assertFalse(map.containsKey(five));
    }

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

    }

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

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

    // Exception tests
    
    /**
     * Cannot create with negative capacity 
     */
    public void testConstructor1() {
        try {
            new ConcurrentHashMap(-1,0,1);
            shouldThrow();
        } catch(IllegalArgumentException e){}
    }

    /**
     * Cannot create with negative concurrency level
     */
    public void testConstructor2() {
        try {
            new ConcurrentHashMap(1,0,-1);
            shouldThrow();
        } catch(IllegalArgumentException e){}
    }

    /**
     * Cannot create with only negative capacity
     */
    public void testConstructor3() {
        try {
            new ConcurrentHashMap(-1);
            shouldThrow();
        } catch(IllegalArgumentException e){}
    }

    /**
     * get(null) throws NPE
     */
    public void testGet_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.get(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * containsKey(null) throws NPE
     */
    public void testContainsKey_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.containsKey(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * containsValue(null) throws NPE
     */
    public void testContainsValue_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.containsValue(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * contains(null) throws NPE
     */
    public void testContains_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.contains(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * put(null,x) throws NPE
     */
    public void testPut1_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.put(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * put(x, null) throws NPE
     */
    public void testPut2_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.put("whatever", null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * putIfAbsent(null, x) throws NPE
     */
    public void testPutIfAbsent1_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.putIfAbsent(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(null, x) throws NPE
     */
    public void testReplace_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.replace(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(null, x, y) throws NPE
     */
    public void testReplaceValue_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.replace(null, one, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * putIfAbsent(x, null) throws NPE
     */
    public void testPutIfAbsent2_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.putIfAbsent("whatever", null);
            shouldThrow();
        } catch(NullPointerException e){}
    }


    /**
     * replace(x, null) throws NPE
     */
    public void testReplace2_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.replace("whatever", null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(x, null, y) throws NPE
     */
    public void testReplaceValue2_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.replace("whatever", null, "A");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * replace(x, y, null) throws NPE
     */
    public void testReplaceValue3_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.replace("whatever", one, null);
            shouldThrow();
        } catch(NullPointerException e){}
    }


    /**
     * remove(null) throws NPE
     */
    public void testRemove1_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.put("sadsdf", "asdads");
            c.remove(null);
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * remove(null, x) throws NPE
     */
    public void testRemove2_NullPointerException() {
        try {
            ConcurrentHashMap c = new ConcurrentHashMap(5);
            c.put("sadsdf", "asdads");
            c.remove(null, "whatever");
            shouldThrow();
        } catch(NullPointerException e){}
    }

    /**
     * A deserialized map equals original
     */
    public void testSerialization() {
        ConcurrentHashMap 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));
            ConcurrentHashMap r = (ConcurrentHashMap)in.readObject();
            assertEquals(q.size(), r.size());
            assertTrue(q.equals(r));
            assertTrue(r.equals(q));
        } catch(Exception e){
            e.printStackTrace();
            unexpectedException();
        }
    }


    /**
     * SetValue of an EntrySet entry sets value in the map.
     */
    public void testSetValueWriteThrough() {
        // Adapted from a bug report by Eric Zoerner 
        ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1);
        assertTrue(map.isEmpty());
        for (int i = 0; i < 20; i++)
            map.put(new Integer(i), new Integer(i));
        assertFalse(map.isEmpty());
        Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next();
        
        // assert that entry1 is not 16
        assertTrue("entry is 16, test not valid",
                   !entry1.getKey().equals(new Integer(16)));
        
        // remove 16 (a different key) from map 
        // which just happens to cause entry1 to be cloned in map
        map.remove(new Integer(16));
        entry1.setValue("XYZ");
        assertTrue(map.containsValue("XYZ")); // fails
    }
    
}
Revision:	1.11
Committed:	Fri Jul 2 10:26:28 2004 UTC (19 years, 10 months ago) by dl
Branch:	MAIN
Changes since 1.10:	+2 -2 lines
Log Message:	testContainsValue tests containsValue, not contains
#	Content
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	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	* Pat Fisher, Mike Judd.
7	*/
8
9	import junit.framework.*;
10	import java.util.*;
11	import java.util.concurrent.*;
12	import java.util.Enumeration;
13	import java.io.*;
14
15	public class ConcurrentHashMapTest extends JSR166TestCase{
16	public static void main(String[] args) {
17	junit.textui.TestRunner.run (suite());
18	}
19	public static Test suite() {
20	return new TestSuite(ConcurrentHashMapTest.class);
21	}
22
23	/**
24	* Create a map from Integers 1-5 to Strings "A"-"E".
25	*/
26	private static ConcurrentHashMap map5() {
27	ConcurrentHashMap map = new ConcurrentHashMap(5);
28	assertTrue(map.isEmpty());
29	map.put(one, "A");
30	map.put(two, "B");
31	map.put(three, "C");
32	map.put(four, "D");
33	map.put(five, "E");
34	assertFalse(map.isEmpty());
35	assertEquals(5, map.size());
36	return map;
37	}
38
39	/**
40	* clear removes all pairs
41	*/
42	public void testClear() {
43	ConcurrentHashMap map = map5();
44	map.clear();
45	assertEquals(map.size(), 0);
46	}
47
48	/**
49	* Maps with same contents are equal
50	*/
51	public void testEquals() {
52	ConcurrentHashMap map1 = map5();
53	ConcurrentHashMap map2 = map5();
54	assertEquals(map1, map2);
55	assertEquals(map2, map1);
56	map1.clear();
57	assertFalse(map1.equals(map2));
58	assertFalse(map2.equals(map1));
59	}
60
61	/**
62	* contains returns true for contained value
63	*/
64	public void testContains() {
65	ConcurrentHashMap map = map5();
66	assertTrue(map.contains("A"));
67	assertFalse(map.contains("Z"));
68	}
69
70	/**
71	* containsKey returns true for contained key
72	*/
73	public void testContainsKey() {
74	ConcurrentHashMap map = map5();
75	assertTrue(map.containsKey(one));
76	assertFalse(map.containsKey(zero));
77	}
78
79	/**
80	* containsValue returns true for held values
81	*/
82	public void testContainsValue() {
83	ConcurrentHashMap map = map5();
84	assertTrue(map.containsValue("A"));
85	assertFalse(map.containsValue("Z"));
86	}
87
88	/**
89	* enumeration returns an enumeration containing the correct
90	* elements
91	*/
92	public void testEnumeration() {
93	ConcurrentHashMap map = map5();
94	Enumeration e = map.elements();
95	int count = 0;
96	while(e.hasMoreElements()){
97	count++;
98	e.nextElement();
99	}
100	assertEquals(5, count);
101	}
102
103	/**
104	* get returns the correct element at the given key,
105	* or null if not present
106	*/
107	public void testGet() {
108	ConcurrentHashMap map = map5();
109	assertEquals("A", (String)map.get(one));
110	ConcurrentHashMap empty = new ConcurrentHashMap();
111	assertNull(map.get("anything"));
112	}
113
114	/**
115	* isEmpty is true of empty map and false for non-empty
116	*/
117	public void testIsEmpty() {
118	ConcurrentHashMap empty = new ConcurrentHashMap();
119	ConcurrentHashMap map = map5();
120	assertTrue(empty.isEmpty());
121	assertFalse(map.isEmpty());
122	}
123
124	/**
125	* keys returns an enumeration containing all the keys from the map
126	*/
127	public void testKeys() {
128	ConcurrentHashMap map = map5();
129	Enumeration e = map.keys();
130	int count = 0;
131	while(e.hasMoreElements()){
132	count++;
133	e.nextElement();
134	}
135	assertEquals(5, count);
136	}
137
138	/**
139	* keySet returns a Set containing all the keys
140	*/
141	public void testKeySet() {
142	ConcurrentHashMap map = map5();
143	Set s = map.keySet();
144	assertEquals(5, s.size());
145	assertTrue(s.contains(one));
146	assertTrue(s.contains(two));
147	assertTrue(s.contains(three));
148	assertTrue(s.contains(four));
149	assertTrue(s.contains(five));
150	}
151
152	/**
153	* values collection contains all values
154	*/
155	public void testValues() {
156	ConcurrentHashMap map = map5();
157	Collection s = map.values();
158	assertEquals(5, s.size());
159	assertTrue(s.contains("A"));
160	assertTrue(s.contains("B"));
161	assertTrue(s.contains("C"));
162	assertTrue(s.contains("D"));
163	assertTrue(s.contains("E"));
164	}
165
166	/**
167	* entrySet contains all pairs
168	*/
169	public void testEntrySet() {
170	ConcurrentHashMap map = map5();
171	Set s = map.entrySet();
172	assertEquals(5, s.size());
173	Iterator it = s.iterator();
174	while (it.hasNext()) {
175	Map.Entry e = (Map.Entry) it.next();
176	assertTrue(
177	(e.getKey().equals(one) && e.getValue().equals("A")) \|\|
178	(e.getKey().equals(two) && e.getValue().equals("B")) \|\|
179	(e.getKey().equals(three) && e.getValue().equals("C")) \|\|
180	(e.getKey().equals(four) && e.getValue().equals("D")) \|\|
181	(e.getKey().equals(five) && e.getValue().equals("E")));
182	}
183	}
184
185	/**
186	* putAll adds all key-value pairs from the given map
187	*/
188	public void testPutAll() {
189	ConcurrentHashMap empty = new ConcurrentHashMap();
190	ConcurrentHashMap map = map5();
191	empty.putAll(map);
192	assertEquals(5, empty.size());
193	assertTrue(empty.containsKey(one));
194	assertTrue(empty.containsKey(two));
195	assertTrue(empty.containsKey(three));
196	assertTrue(empty.containsKey(four));
197	assertTrue(empty.containsKey(five));
198	}
199
200	/**
201	* putIfAbsent works when the given key is not present
202	*/
203	public void testPutIfAbsent() {
204	ConcurrentHashMap map = map5();
205	map.putIfAbsent(six, "Z");
206	assertTrue(map.containsKey(six));
207	}
208
209	/**
210	* putIfAbsent does not add the pair if the key is already present
211	*/
212	public void testPutIfAbsent2() {
213	ConcurrentHashMap map = map5();
214	assertEquals("A", map.putIfAbsent(one, "Z"));
215	}
216
217	/**
218	* replace fails when the given key is not present
219	*/
220	public void testReplace() {
221	ConcurrentHashMap map = map5();
222	assertNull(map.replace(six, "Z"));
223	assertFalse(map.containsKey(six));
224	}
225
226	/**
227	* replace succeeds if the key is already present
228	*/
229	public void testReplace2() {
230	ConcurrentHashMap map = map5();
231	assertNotNull(map.replace(one, "Z"));
232	assertEquals("Z", map.get(one));
233	}
234
235
236	/**
237	* replace value fails when the given key not mapped to expected value
238	*/
239	public void testReplaceValue() {
240	ConcurrentHashMap map = map5();
241	assertEquals("A", map.get(one));
242	assertFalse(map.replace(one, "Z", "Z"));
243	assertEquals("A", map.get(one));
244	}
245
246	/**
247	* replace value succeeds when the given key mapped to expected value
248	*/
249	public void testReplaceValue2() {
250	ConcurrentHashMap map = map5();
251	assertEquals("A", map.get(one));
252	assertTrue(map.replace(one, "A", "Z"));
253	assertEquals("Z", map.get(one));
254	}
255
256
257	/**
258	* remove removes the correct key-value pair from the map
259	*/
260	public void testRemove() {
261	ConcurrentHashMap map = map5();
262	map.remove(five);
263	assertEquals(4, map.size());
264	assertFalse(map.containsKey(five));
265	}
266
267	/**
268	* remove(key,value) removes only if pair present
269	*/
270	public void testRemove2() {
271	ConcurrentHashMap map = map5();
272	map.remove(five, "E");
273	assertEquals(4, map.size());
274	assertFalse(map.containsKey(five));
275	map.remove(four, "A");
276	assertEquals(4, map.size());
277	assertTrue(map.containsKey(four));
278
279	}
280
281	/**
282	* size returns the correct values
283	*/
284	public void testSize() {
285	ConcurrentHashMap map = map5();
286	ConcurrentHashMap empty = new ConcurrentHashMap();
287	assertEquals(0, empty.size());
288	assertEquals(5, map.size());
289	}
290
291	/**
292	* toString contains toString of elements
293	*/
294	public void testToString() {
295	ConcurrentHashMap map = map5();
296	String s = map.toString();
297	for (int i = 1; i <= 5; ++i) {
298	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
299	}
300	}
301
302	// Exception tests
303
304	/**
305	* Cannot create with negative capacity
306	*/
307	public void testConstructor1() {
308	try {
309	new ConcurrentHashMap(-1,0,1);
310	shouldThrow();
311	} catch(IllegalArgumentException e){}
312	}
313
314	/**
315	* Cannot create with negative concurrency level
316	*/
317	public void testConstructor2() {
318	try {
319	new ConcurrentHashMap(1,0,-1);
320	shouldThrow();
321	} catch(IllegalArgumentException e){}
322	}
323
324	/**
325	* Cannot create with only negative capacity
326	*/
327	public void testConstructor3() {
328	try {
329	new ConcurrentHashMap(-1);
330	shouldThrow();
331	} catch(IllegalArgumentException e){}
332	}
333
334	/**
335	* get(null) throws NPE
336	*/
337	public void testGet_NullPointerException() {
338	try {
339	ConcurrentHashMap c = new ConcurrentHashMap(5);
340	c.get(null);
341	shouldThrow();
342	} catch(NullPointerException e){}
343	}
344
345	/**
346	* containsKey(null) throws NPE
347	*/
348	public void testContainsKey_NullPointerException() {
349	try {
350	ConcurrentHashMap c = new ConcurrentHashMap(5);
351	c.containsKey(null);
352	shouldThrow();
353	} catch(NullPointerException e){}
354	}
355
356	/**
357	* containsValue(null) throws NPE
358	*/
359	public void testContainsValue_NullPointerException() {
360	try {
361	ConcurrentHashMap c = new ConcurrentHashMap(5);
362	c.containsValue(null);
363	shouldThrow();
364	} catch(NullPointerException e){}
365	}
366
367	/**
368	* contains(null) throws NPE
369	*/
370	public void testContains_NullPointerException() {
371	try {
372	ConcurrentHashMap c = new ConcurrentHashMap(5);
373	c.contains(null);
374	shouldThrow();
375	} catch(NullPointerException e){}
376	}
377
378	/**
379	* put(null,x) throws NPE
380	*/
381	public void testPut1_NullPointerException() {
382	try {
383	ConcurrentHashMap c = new ConcurrentHashMap(5);
384	c.put(null, "whatever");
385	shouldThrow();
386	} catch(NullPointerException e){}
387	}
388
389	/**
390	* put(x, null) throws NPE
391	*/
392	public void testPut2_NullPointerException() {
393	try {
394	ConcurrentHashMap c = new ConcurrentHashMap(5);
395	c.put("whatever", null);
396	shouldThrow();
397	} catch(NullPointerException e){}
398	}
399
400	/**
401	* putIfAbsent(null, x) throws NPE
402	*/
403	public void testPutIfAbsent1_NullPointerException() {
404	try {
405	ConcurrentHashMap c = new ConcurrentHashMap(5);
406	c.putIfAbsent(null, "whatever");
407	shouldThrow();
408	} catch(NullPointerException e){}
409	}
410
411	/**
412	* replace(null, x) throws NPE
413	*/
414	public void testReplace_NullPointerException() {
415	try {
416	ConcurrentHashMap c = new ConcurrentHashMap(5);
417	c.replace(null, "whatever");
418	shouldThrow();
419	} catch(NullPointerException e){}
420	}
421
422	/**
423	* replace(null, x, y) throws NPE
424	*/
425	public void testReplaceValue_NullPointerException() {
426	try {
427	ConcurrentHashMap c = new ConcurrentHashMap(5);
428	c.replace(null, one, "whatever");
429	shouldThrow();
430	} catch(NullPointerException e){}
431	}
432
433	/**
434	* putIfAbsent(x, null) throws NPE
435	*/
436	public void testPutIfAbsent2_NullPointerException() {
437	try {
438	ConcurrentHashMap c = new ConcurrentHashMap(5);
439	c.putIfAbsent("whatever", null);
440	shouldThrow();
441	} catch(NullPointerException e){}
442	}
443
444
445	/**
446	* replace(x, null) throws NPE
447	*/
448	public void testReplace2_NullPointerException() {
449	try {
450	ConcurrentHashMap c = new ConcurrentHashMap(5);
451	c.replace("whatever", null);
452	shouldThrow();
453	} catch(NullPointerException e){}
454	}
455
456	/**
457	* replace(x, null, y) throws NPE
458	*/
459	public void testReplaceValue2_NullPointerException() {
460	try {
461	ConcurrentHashMap c = new ConcurrentHashMap(5);
462	c.replace("whatever", null, "A");
463	shouldThrow();
464	} catch(NullPointerException e){}
465	}
466
467	/**
468	* replace(x, y, null) throws NPE
469	*/
470	public void testReplaceValue3_NullPointerException() {
471	try {
472	ConcurrentHashMap c = new ConcurrentHashMap(5);
473	c.replace("whatever", one, null);
474	shouldThrow();
475	} catch(NullPointerException e){}
476	}
477
478
479	/**
480	* remove(null) throws NPE
481	*/
482	public void testRemove1_NullPointerException() {
483	try {
484	ConcurrentHashMap c = new ConcurrentHashMap(5);
485	c.put("sadsdf", "asdads");
486	c.remove(null);
487	shouldThrow();
488	} catch(NullPointerException e){}
489	}
490
491	/**
492	* remove(null, x) throws NPE
493	*/
494	public void testRemove2_NullPointerException() {
495	try {
496	ConcurrentHashMap c = new ConcurrentHashMap(5);
497	c.put("sadsdf", "asdads");
498	c.remove(null, "whatever");
499	shouldThrow();
500	} catch(NullPointerException e){}
501	}
502
503	/**
504	* A deserialized map equals original
505	*/
506	public void testSerialization() {
507	ConcurrentHashMap q = map5();
508
509	try {
510	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
511	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
512	out.writeObject(q);
513	out.close();
514
515	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
516	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
517	ConcurrentHashMap r = (ConcurrentHashMap)in.readObject();
518	assertEquals(q.size(), r.size());
519	assertTrue(q.equals(r));
520	assertTrue(r.equals(q));
521	} catch(Exception e){
522	e.printStackTrace();
523	unexpectedException();
524	}
525	}
526
527
528	/**
529	* SetValue of an EntrySet entry sets value in the map.
530	*/
531	public void testSetValueWriteThrough() {
532	// Adapted from a bug report by Eric Zoerner
533	ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1);
534	assertTrue(map.isEmpty());
535	for (int i = 0; i < 20; i++)
536	map.put(new Integer(i), new Integer(i));
537	assertFalse(map.isEmpty());
538	Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next();
539
540	// assert that entry1 is not 16
541	assertTrue("entry is 16, test not valid",
542	!entry1.getKey().equals(new Integer(16)));
543
544	// remove 16 (a different key) from map
545	// which just happens to cause entry1 to be cloned in map
546	map.remove(new Integer(16));
547	entry1.setValue("XYZ");
548	assertTrue(map.containsValue("XYZ")); // fails
549	}
550
551	}