test/tck/CopyOnWriteArrayListTest.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/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

import junit.framework.*;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Vector;
import java.util.concurrent.CopyOnWriteArrayList;

public class CopyOnWriteArrayListTest extends JSR166TestCase {

    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

    public static Test suite() {
        return new TestSuite(CopyOnWriteArrayListTest.class);
    }

    static CopyOnWriteArrayList populatedArray(int n) {
        CopyOnWriteArrayList a = new CopyOnWriteArrayList();
        assertTrue(a.isEmpty());
        for (int i = 0; i < n; ++i)
            a.add(new Integer(i));
        assertFalse(a.isEmpty());
        assertEquals(n, a.size());
        return a;
    }


    /**
     * a new list is empty
     */
    public void testConstructor() {
        CopyOnWriteArrayList a = new CopyOnWriteArrayList();
        assertTrue(a.isEmpty());
    }

    /**
     * new list contains all elements of initializing array
     */
    public void testConstructor2() {
        Integer[] ints = new Integer[SIZE];
        for (int i = 0; i < SIZE-1; ++i)
            ints[i] = new Integer(i);
        CopyOnWriteArrayList a = new CopyOnWriteArrayList(ints);
        for (int i = 0; i < SIZE; ++i)
            assertEquals(ints[i], a.get(i));
    }

    /**
     * new list contains all elements of initializing collection
     */
    public void testConstructor3() {
        Integer[] ints = new Integer[SIZE];
        for (int i = 0; i < SIZE-1; ++i)
            ints[i] = new Integer(i);
        CopyOnWriteArrayList a = new CopyOnWriteArrayList(Arrays.asList(ints));
        for (int i = 0; i < SIZE; ++i)
            assertEquals(ints[i], a.get(i));
    }


    /**
     * addAll adds each element from the given collection
     */
    public void testAddAll() {
        CopyOnWriteArrayList full = populatedArray(3);
        Vector v = new Vector();
        v.add(three);
        v.add(four);
        v.add(five);
        full.addAll(v);
        assertEquals(6, full.size());
    }

    /**
     * addAllAbsent adds each element from the given collection that did not
     * already exist in the List
     */
    public void testAddAllAbsent() {
        CopyOnWriteArrayList full = populatedArray(3);
        Vector v = new Vector();
        v.add(three);
        v.add(four);
        v.add(one); // will not add this element
        full.addAllAbsent(v);
        assertEquals(5, full.size());
    }

    /**
     * addIfAbsent will not add the element if it already exists in the list
     */
    public void testAddIfAbsent() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        full.addIfAbsent(one);
        assertEquals(SIZE, full.size());
    }

    /**
     * addIfAbsent adds the element when it does not exist in the list
     */
    public void testAddIfAbsent2() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        full.addIfAbsent(three);
        assertTrue(full.contains(three));
    }

    /**
     * clear removes all elements from the list
     */
    public void testClear() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        full.clear();
        assertEquals(0, full.size());
    }


    /**
     * Cloned list is equal
     */
    public void testClone() {
        CopyOnWriteArrayList l1 = populatedArray(SIZE);
        CopyOnWriteArrayList l2 = (CopyOnWriteArrayList)(l1.clone());
        assertEquals(l1, l2);
        l1.clear();
        assertFalse(l1.equals(l2));
    }

    /**
     * contains is true for added elements
     */
    public void testContains() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertTrue(full.contains(one));
        assertFalse(full.contains(five));
    }

    /**
     * adding at an index places it in the indicated index
     */
    public void testAddIndex() {
        CopyOnWriteArrayList full = populatedArray(3);
        full.add(0, m1);
        assertEquals(4, full.size());
        assertEquals(m1, full.get(0));
        assertEquals(zero, full.get(1));

        full.add(2, m2);
        assertEquals(5, full.size());
        assertEquals(m2, full.get(2));
        assertEquals(two, full.get(4));
    }

    /**
     * lists with same elements are equal and have same hashCode
     */
    public void testEquals() {
        CopyOnWriteArrayList a = populatedArray(3);
        CopyOnWriteArrayList b = populatedArray(3);
        assertTrue(a.equals(b));
        assertTrue(b.equals(a));
        assertEquals(a.hashCode(), b.hashCode());
        a.add(m1);
        assertFalse(a.equals(b));
        assertFalse(b.equals(a));
        b.add(m1);
        assertTrue(a.equals(b));
        assertTrue(b.equals(a));
        assertEquals(a.hashCode(), b.hashCode());
    }


    /**
     * containsAll returns true for collection with subset of elements
     */
    public void testContainsAll() {
        CopyOnWriteArrayList full = populatedArray(3);
        Vector v = new Vector();
        v.add(one);
        v.add(two);
        assertTrue(full.containsAll(v));
        v.add(six);
        assertFalse(full.containsAll(v));
    }

    /**
     * get returns the value at the given index
     */
    public void testGet() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertEquals(0, full.get(0));
    }

    /**
     * indexOf gives the index for the given object
     */
    public void testIndexOf() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertEquals(1, full.indexOf(one));
        assertEquals(-1, full.indexOf("puppies"));
    }

    /**
     * indexOf gives the index based on the given index
     * at which to start searching
     */
    public void testIndexOf2() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertEquals(1, full.indexOf(one, 0));
        assertEquals(-1, full.indexOf(one, 2));
    }

    /**
     * isEmpty returns true when empty, else false
     */
    public void testIsEmpty() {
        CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
        CopyOnWriteArrayList full = populatedArray(SIZE);
        assertTrue(empty.isEmpty());
        assertFalse(full.isEmpty());
    }

    /**
     * iterator() returns an iterator containing the elements of the list
     */
    public void testIterator() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        Iterator i = full.iterator();
        int j;
        for (j = 0; i.hasNext(); j++)
            assertEquals(j, i.next());
        assertEquals(SIZE, j);
    }

    /**
     * iterator.remove throws UnsupportedOperationException
     */
    public void testIteratorRemove() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        Iterator it = full.iterator();
        it.next();
        try {
            it.remove();
            shouldThrow();
        } catch (UnsupportedOperationException success) {}
    }

    /**
     * toString contains toString of elements
     */
    public void testToString() {
        CopyOnWriteArrayList full = populatedArray(3);
        String s = full.toString();
        for (int i = 0; i < 3; ++i) {
            assertTrue(s.contains(String.valueOf(i)));
        }
    }

    /**
     * lastIndexOf returns the index for the given object
     */
    public void testLastIndexOf1() {
        CopyOnWriteArrayList full = populatedArray(3);
        full.add(one);
        full.add(three);
        assertEquals(3, full.lastIndexOf(one));
        assertEquals(-1, full.lastIndexOf(six));
    }

    /**
     * lastIndexOf returns the index from the given starting point
     */
    public void testLastIndexOf2() {
        CopyOnWriteArrayList full = populatedArray(3);
        full.add(one);
        full.add(three);
        assertEquals(3, full.lastIndexOf(one, 4));
        assertEquals(-1, full.lastIndexOf(three, 3));
    }

    /**
     * listIterator traverses all elements
     */
    public void testListIterator1() {
        CopyOnWriteArrayList full = populatedArray(SIZE);
        ListIterator i = full.listIterator();
        int j;
        for (j = 0; i.hasNext(); j++)
            assertEquals(j, i.next());
        assertEquals(SIZE, j);
    }

    /**
     * listIterator only returns those elements after the given index
     */
    public void testListIterator2() {
        CopyOnWriteArrayList full = populatedArray(3);
        ListIterator i = full.listIterator(1);
        int j;
        for (j = 0; i.hasNext(); j++)
            assertEquals(j+1, i.next());
        assertEquals(2, j);
    }

    /**
     * remove removes and returns the object at the given index
     */
    public void testRemove() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertEquals(2, full.remove(2));
        assertEquals(2, full.size());
    }

    /**
     * removeAll removes all elements from the given collection
     */
    public void testRemoveAll() {
        CopyOnWriteArrayList full = populatedArray(3);
        Vector v = new Vector();
        v.add(one);
        v.add(two);
        full.removeAll(v);
        assertEquals(1, full.size());
    }

    /**
     * set changes the element at the given index
     */
    public void testSet() {
        CopyOnWriteArrayList full = populatedArray(3);
        assertEquals(2, full.set(2, four));
        assertEquals(4, full.get(2));
    }

    /**
     * size returns the number of elements
     */
    public void testSize() {
        CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
        CopyOnWriteArrayList full = populatedArray(SIZE);
        assertEquals(SIZE, full.size());
        assertEquals(0, empty.size());
    }

    /**
     * toArray returns an Object array containing all elements from the list
     */
    public void testToArray() {
        CopyOnWriteArrayList full = populatedArray(3);
        Object[] o = full.toArray();
        assertEquals(3, o.length);
        assertEquals(0, o[0]);
        assertEquals(1, o[1]);
        assertEquals(2, o[2]);
    }

    /**
     * toArray returns an Integer array containing all elements from
     * the list
     */
    public void testToArray2() {
        CopyOnWriteArrayList full = populatedArray(3);
        Integer[] i = new Integer[3];
        i = (Integer[])full.toArray(i);
        assertEquals(3, i.length);
        assertEquals(0, i[0].intValue());
        assertEquals(1, i[1].intValue());
        assertEquals(2, i[2].intValue());
    }


    /**
     * sublists contains elements at indexes offset from their base
     */
    public void testSubList() {
        CopyOnWriteArrayList a = populatedArray(10);
        assertTrue(a.subList(1,1).isEmpty());
        for (int j = 0; j < 9; ++j) {
            for (int i = j ; i < 10; ++i) {
                List b = a.subList(j,i);
                for (int k = j; k < i; ++k) {
                    assertEquals(new Integer(k), b.get(k-j));
                }
            }
        }

        List s = a.subList(2, 5);
        assertEquals(s.size(), 3);
        s.set(2, m1);
        assertEquals(a.get(4), m1);
        s.clear();
        assertEquals(a.size(), 7);
    }

    // Exception tests

    /**
     * toArray throws an ArrayStoreException when the given array
     * can not store the objects inside the list
     */
    public void testToArray_ArrayStoreException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("zfasdfsdf");
            c.add("asdadasd");
            c.toArray(new Long[5]);
            shouldThrow();
        } catch (ArrayStoreException success) {}
    }

    /**
     * get throws an IndexOutOfBoundsException on a negative index
     */
    public void testGet1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.get(-1);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * get throws an IndexOutOfBoundsException on a too high index
     */
    public void testGet2_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.add("asdad");
            c.get(100);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * set throws an IndexOutOfBoundsException on a negative index
     */
    public void testSet1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.set(-1,"qwerty");
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * set throws an IndexOutOfBoundsException on a too high index
     */
    public void testSet2() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.add("asdad");
            c.set(100, "qwerty");
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * add throws an IndexOutOfBoundsException on a negative index
     */
    public void testAdd1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add(-1,"qwerty");
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * add throws an IndexOutOfBoundsException on a too high index
     */
    public void testAdd2_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.add("asdasdasd");
            c.add(100, "qwerty");
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * remove throws an IndexOutOfBoundsException on a negative index
     */
    public void testRemove1_IndexOutOfBounds() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.remove(-1);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * remove throws an IndexOutOfBoundsException on a too high index
     */
    public void testRemove2_IndexOutOfBounds() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.add("adasdasd");
            c.remove(100);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * addAll throws an IndexOutOfBoundsException on a negative index
     */
    public void testAddAll1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.addAll(-1,new LinkedList());
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * addAll throws an IndexOutOfBoundsException on a too high index
     */
    public void testAddAll2_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.add("asdasdasd");
            c.addAll(100, new LinkedList());
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * listIterator throws an IndexOutOfBoundsException on a negative index
     */
    public void testListIterator1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.listIterator(-1);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * listIterator throws an IndexOutOfBoundsException on a too high index
     */
    public void testListIterator2_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("adasd");
            c.add("asdasdas");
            c.listIterator(100);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * subList throws an IndexOutOfBoundsException on a negative index
     */
    public void testSubList1_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.subList(-1,100);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * subList throws an IndexOutOfBoundsException on a too high index
     */
    public void testSubList2_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.add("asdasd");
            c.subList(1,100);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * subList throws IndexOutOfBoundsException when the second index
     * is lower then the first
     */
    public void testSubList3_IndexOutOfBoundsException() {
        try {
            CopyOnWriteArrayList c = new CopyOnWriteArrayList();
            c.subList(3,1);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {}
    }

    /**
     * a deserialized serialized list is equal
     */
    public void testSerialization() throws Exception {
        List x = populatedArray(SIZE);
        List y = serialClone(x);

        assertTrue(x != y);
        assertEquals(x.size(), y.size());
        assertEquals(x.toString(), y.toString());
        assertTrue(Arrays.equals(x.toArray(), y.toArray()));
        assertEquals(x, y);
        assertEquals(y, x);
        while (!x.isEmpty()) {
            assertFalse(y.isEmpty());
            assertEquals(x.remove(0), y.remove(0));
        }
        assertTrue(y.isEmpty());
    }

}
Revision:	1.22
Committed:	Tue May 31 16:16:23 2011 UTC (12 years, 11 months ago) by jsr166
Branch:	MAIN
Changes since 1.21:	+20 -15 lines
Log Message:	use serialClone in serialization tests; update imports
#	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/publicdomain/zero/1.0/
5	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	* Pat Fisher, Mike Judd.
7	*/
8
9	import junit.framework.*;
10	import java.util.Arrays;
11	import java.util.Iterator;
12	import java.util.LinkedList;
13	import java.util.List;
14	import java.util.ListIterator;
15	import java.util.Vector;
16	import java.util.concurrent.CopyOnWriteArrayList;
17
18	public class CopyOnWriteArrayListTest extends JSR166TestCase {
19
20	public static void main(String[] args) {
21	junit.textui.TestRunner.run(suite());
22	}
23
24	public static Test suite() {
25	return new TestSuite(CopyOnWriteArrayListTest.class);
26	}
27
28	static CopyOnWriteArrayList populatedArray(int n) {
29	CopyOnWriteArrayList a = new CopyOnWriteArrayList();
30	assertTrue(a.isEmpty());
31	for (int i = 0; i < n; ++i)
32	a.add(new Integer(i));
33	assertFalse(a.isEmpty());
34	assertEquals(n, a.size());
35	return a;
36	}
37
38
39	/**
40	* a new list is empty
41	*/
42	public void testConstructor() {
43	CopyOnWriteArrayList a = new CopyOnWriteArrayList();
44	assertTrue(a.isEmpty());
45	}
46
47	/**
48	* new list contains all elements of initializing array
49	*/
50	public void testConstructor2() {
51	Integer[] ints = new Integer[SIZE];
52	for (int i = 0; i < SIZE-1; ++i)
53	ints[i] = new Integer(i);
54	CopyOnWriteArrayList a = new CopyOnWriteArrayList(ints);
55	for (int i = 0; i < SIZE; ++i)
56	assertEquals(ints[i], a.get(i));
57	}
58
59	/**
60	* new list contains all elements of initializing collection
61	*/
62	public void testConstructor3() {
63	Integer[] ints = new Integer[SIZE];
64	for (int i = 0; i < SIZE-1; ++i)
65	ints[i] = new Integer(i);
66	CopyOnWriteArrayList a = new CopyOnWriteArrayList(Arrays.asList(ints));
67	for (int i = 0; i < SIZE; ++i)
68	assertEquals(ints[i], a.get(i));
69	}
70
71
72	/**
73	* addAll adds each element from the given collection
74	*/
75	public void testAddAll() {
76	CopyOnWriteArrayList full = populatedArray(3);
77	Vector v = new Vector();
78	v.add(three);
79	v.add(four);
80	v.add(five);
81	full.addAll(v);
82	assertEquals(6, full.size());
83	}
84
85	/**
86	* addAllAbsent adds each element from the given collection that did not
87	* already exist in the List
88	*/
89	public void testAddAllAbsent() {
90	CopyOnWriteArrayList full = populatedArray(3);
91	Vector v = new Vector();
92	v.add(three);
93	v.add(four);
94	v.add(one); // will not add this element
95	full.addAllAbsent(v);
96	assertEquals(5, full.size());
97	}
98
99	/**
100	* addIfAbsent will not add the element if it already exists in the list
101	*/
102	public void testAddIfAbsent() {
103	CopyOnWriteArrayList full = populatedArray(SIZE);
104	full.addIfAbsent(one);
105	assertEquals(SIZE, full.size());
106	}
107
108	/**
109	* addIfAbsent adds the element when it does not exist in the list
110	*/
111	public void testAddIfAbsent2() {
112	CopyOnWriteArrayList full = populatedArray(SIZE);
113	full.addIfAbsent(three);
114	assertTrue(full.contains(three));
115	}
116
117	/**
118	* clear removes all elements from the list
119	*/
120	public void testClear() {
121	CopyOnWriteArrayList full = populatedArray(SIZE);
122	full.clear();
123	assertEquals(0, full.size());
124	}
125
126
127	/**
128	* Cloned list is equal
129	*/
130	public void testClone() {
131	CopyOnWriteArrayList l1 = populatedArray(SIZE);
132	CopyOnWriteArrayList l2 = (CopyOnWriteArrayList)(l1.clone());
133	assertEquals(l1, l2);
134	l1.clear();
135	assertFalse(l1.equals(l2));
136	}
137
138	/**
139	* contains is true for added elements
140	*/
141	public void testContains() {
142	CopyOnWriteArrayList full = populatedArray(3);
143	assertTrue(full.contains(one));
144	assertFalse(full.contains(five));
145	}
146
147	/**
148	* adding at an index places it in the indicated index
149	*/
150	public void testAddIndex() {
151	CopyOnWriteArrayList full = populatedArray(3);
152	full.add(0, m1);
153	assertEquals(4, full.size());
154	assertEquals(m1, full.get(0));
155	assertEquals(zero, full.get(1));
156
157	full.add(2, m2);
158	assertEquals(5, full.size());
159	assertEquals(m2, full.get(2));
160	assertEquals(two, full.get(4));
161	}
162
163	/**
164	* lists with same elements are equal and have same hashCode
165	*/
166	public void testEquals() {
167	CopyOnWriteArrayList a = populatedArray(3);
168	CopyOnWriteArrayList b = populatedArray(3);
169	assertTrue(a.equals(b));
170	assertTrue(b.equals(a));
171	assertEquals(a.hashCode(), b.hashCode());
172	a.add(m1);
173	assertFalse(a.equals(b));
174	assertFalse(b.equals(a));
175	b.add(m1);
176	assertTrue(a.equals(b));
177	assertTrue(b.equals(a));
178	assertEquals(a.hashCode(), b.hashCode());
179	}
180
181
182	/**
183	* containsAll returns true for collection with subset of elements
184	*/
185	public void testContainsAll() {
186	CopyOnWriteArrayList full = populatedArray(3);
187	Vector v = new Vector();
188	v.add(one);
189	v.add(two);
190	assertTrue(full.containsAll(v));
191	v.add(six);
192	assertFalse(full.containsAll(v));
193	}
194
195	/**
196	* get returns the value at the given index
197	*/
198	public void testGet() {
199	CopyOnWriteArrayList full = populatedArray(3);
200	assertEquals(0, full.get(0));
201	}
202
203	/**
204	* indexOf gives the index for the given object
205	*/
206	public void testIndexOf() {
207	CopyOnWriteArrayList full = populatedArray(3);
208	assertEquals(1, full.indexOf(one));
209	assertEquals(-1, full.indexOf("puppies"));
210	}
211
212	/**
213	* indexOf gives the index based on the given index
214	* at which to start searching
215	*/
216	public void testIndexOf2() {
217	CopyOnWriteArrayList full = populatedArray(3);
218	assertEquals(1, full.indexOf(one, 0));
219	assertEquals(-1, full.indexOf(one, 2));
220	}
221
222	/**
223	* isEmpty returns true when empty, else false
224	*/
225	public void testIsEmpty() {
226	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
227	CopyOnWriteArrayList full = populatedArray(SIZE);
228	assertTrue(empty.isEmpty());
229	assertFalse(full.isEmpty());
230	}
231
232	/**
233	* iterator() returns an iterator containing the elements of the list
234	*/
235	public void testIterator() {
236	CopyOnWriteArrayList full = populatedArray(SIZE);
237	Iterator i = full.iterator();
238	int j;
239	for (j = 0; i.hasNext(); j++)
240	assertEquals(j, i.next());
241	assertEquals(SIZE, j);
242	}
243
244	/**
245	* iterator.remove throws UnsupportedOperationException
246	*/
247	public void testIteratorRemove() {
248	CopyOnWriteArrayList full = populatedArray(SIZE);
249	Iterator it = full.iterator();
250	it.next();
251	try {
252	it.remove();
253	shouldThrow();
254	} catch (UnsupportedOperationException success) {}
255	}
256
257	/**
258	* toString contains toString of elements
259	*/
260	public void testToString() {
261	CopyOnWriteArrayList full = populatedArray(3);
262	String s = full.toString();
263	for (int i = 0; i < 3; ++i) {
264	assertTrue(s.contains(String.valueOf(i)));
265	}
266	}
267
268	/**
269	* lastIndexOf returns the index for the given object
270	*/
271	public void testLastIndexOf1() {
272	CopyOnWriteArrayList full = populatedArray(3);
273	full.add(one);
274	full.add(three);
275	assertEquals(3, full.lastIndexOf(one));
276	assertEquals(-1, full.lastIndexOf(six));
277	}
278
279	/**
280	* lastIndexOf returns the index from the given starting point
281	*/
282	public void testLastIndexOf2() {
283	CopyOnWriteArrayList full = populatedArray(3);
284	full.add(one);
285	full.add(three);
286	assertEquals(3, full.lastIndexOf(one, 4));
287	assertEquals(-1, full.lastIndexOf(three, 3));
288	}
289
290	/**
291	* listIterator traverses all elements
292	*/
293	public void testListIterator1() {
294	CopyOnWriteArrayList full = populatedArray(SIZE);
295	ListIterator i = full.listIterator();
296	int j;
297	for (j = 0; i.hasNext(); j++)
298	assertEquals(j, i.next());
299	assertEquals(SIZE, j);
300	}
301
302	/**
303	* listIterator only returns those elements after the given index
304	*/
305	public void testListIterator2() {
306	CopyOnWriteArrayList full = populatedArray(3);
307	ListIterator i = full.listIterator(1);
308	int j;
309	for (j = 0; i.hasNext(); j++)
310	assertEquals(j+1, i.next());
311	assertEquals(2, j);
312	}
313
314	/**
315	* remove removes and returns the object at the given index
316	*/
317	public void testRemove() {
318	CopyOnWriteArrayList full = populatedArray(3);
319	assertEquals(2, full.remove(2));
320	assertEquals(2, full.size());
321	}
322
323	/**
324	* removeAll removes all elements from the given collection
325	*/
326	public void testRemoveAll() {
327	CopyOnWriteArrayList full = populatedArray(3);
328	Vector v = new Vector();
329	v.add(one);
330	v.add(two);
331	full.removeAll(v);
332	assertEquals(1, full.size());
333	}
334
335	/**
336	* set changes the element at the given index
337	*/
338	public void testSet() {
339	CopyOnWriteArrayList full = populatedArray(3);
340	assertEquals(2, full.set(2, four));
341	assertEquals(4, full.get(2));
342	}
343
344	/**
345	* size returns the number of elements
346	*/
347	public void testSize() {
348	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
349	CopyOnWriteArrayList full = populatedArray(SIZE);
350	assertEquals(SIZE, full.size());
351	assertEquals(0, empty.size());
352	}
353
354	/**
355	* toArray returns an Object array containing all elements from the list
356	*/
357	public void testToArray() {
358	CopyOnWriteArrayList full = populatedArray(3);
359	Object[] o = full.toArray();
360	assertEquals(3, o.length);
361	assertEquals(0, o[0]);
362	assertEquals(1, o[1]);
363	assertEquals(2, o[2]);
364	}
365
366	/**
367	* toArray returns an Integer array containing all elements from
368	* the list
369	*/
370	public void testToArray2() {
371	CopyOnWriteArrayList full = populatedArray(3);
372	Integer[] i = new Integer[3];
373	i = (Integer[])full.toArray(i);
374	assertEquals(3, i.length);
375	assertEquals(0, i[0].intValue());
376	assertEquals(1, i[1].intValue());
377	assertEquals(2, i[2].intValue());
378	}
379
380
381	/**
382	* sublists contains elements at indexes offset from their base
383	*/
384	public void testSubList() {
385	CopyOnWriteArrayList a = populatedArray(10);
386	assertTrue(a.subList(1,1).isEmpty());
387	for (int j = 0; j < 9; ++j) {
388	for (int i = j ; i < 10; ++i) {
389	List b = a.subList(j,i);
390	for (int k = j; k < i; ++k) {
391	assertEquals(new Integer(k), b.get(k-j));
392	}
393	}
394	}
395
396	List s = a.subList(2, 5);
397	assertEquals(s.size(), 3);
398	s.set(2, m1);
399	assertEquals(a.get(4), m1);
400	s.clear();
401	assertEquals(a.size(), 7);
402	}
403
404	// Exception tests
405
406	/**
407	* toArray throws an ArrayStoreException when the given array
408	* can not store the objects inside the list
409	*/
410	public void testToArray_ArrayStoreException() {
411	try {
412	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
413	c.add("zfasdfsdf");
414	c.add("asdadasd");
415	c.toArray(new Long[5]);
416	shouldThrow();
417	} catch (ArrayStoreException success) {}
418	}
419
420	/**
421	* get throws an IndexOutOfBoundsException on a negative index
422	*/
423	public void testGet1_IndexOutOfBoundsException() {
424	try {
425	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
426	c.get(-1);
427	shouldThrow();
428	} catch (IndexOutOfBoundsException success) {}
429	}
430
431	/**
432	* get throws an IndexOutOfBoundsException on a too high index
433	*/
434	public void testGet2_IndexOutOfBoundsException() {
435	try {
436	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
437	c.add("asdasd");
438	c.add("asdad");
439	c.get(100);
440	shouldThrow();
441	} catch (IndexOutOfBoundsException success) {}
442	}
443
444	/**
445	* set throws an IndexOutOfBoundsException on a negative index
446	*/
447	public void testSet1_IndexOutOfBoundsException() {
448	try {
449	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
450	c.set(-1,"qwerty");
451	shouldThrow();
452	} catch (IndexOutOfBoundsException success) {}
453	}
454
455	/**
456	* set throws an IndexOutOfBoundsException on a too high index
457	*/
458	public void testSet2() {
459	try {
460	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
461	c.add("asdasd");
462	c.add("asdad");
463	c.set(100, "qwerty");
464	shouldThrow();
465	} catch (IndexOutOfBoundsException success) {}
466	}
467
468	/**
469	* add throws an IndexOutOfBoundsException on a negative index
470	*/
471	public void testAdd1_IndexOutOfBoundsException() {
472	try {
473	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
474	c.add(-1,"qwerty");
475	shouldThrow();
476	} catch (IndexOutOfBoundsException success) {}
477	}
478
479	/**
480	* add throws an IndexOutOfBoundsException on a too high index
481	*/
482	public void testAdd2_IndexOutOfBoundsException() {
483	try {
484	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
485	c.add("asdasd");
486	c.add("asdasdasd");
487	c.add(100, "qwerty");
488	shouldThrow();
489	} catch (IndexOutOfBoundsException success) {}
490	}
491
492	/**
493	* remove throws an IndexOutOfBoundsException on a negative index
494	*/
495	public void testRemove1_IndexOutOfBounds() {
496	try {
497	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
498	c.remove(-1);
499	shouldThrow();
500	} catch (IndexOutOfBoundsException success) {}
501	}
502
503	/**
504	* remove throws an IndexOutOfBoundsException on a too high index
505	*/
506	public void testRemove2_IndexOutOfBounds() {
507	try {
508	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
509	c.add("asdasd");
510	c.add("adasdasd");
511	c.remove(100);
512	shouldThrow();
513	} catch (IndexOutOfBoundsException success) {}
514	}
515
516	/**
517	* addAll throws an IndexOutOfBoundsException on a negative index
518	*/
519	public void testAddAll1_IndexOutOfBoundsException() {
520	try {
521	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
522	c.addAll(-1,new LinkedList());
523	shouldThrow();
524	} catch (IndexOutOfBoundsException success) {}
525	}
526
527	/**
528	* addAll throws an IndexOutOfBoundsException on a too high index
529	*/
530	public void testAddAll2_IndexOutOfBoundsException() {
531	try {
532	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
533	c.add("asdasd");
534	c.add("asdasdasd");
535	c.addAll(100, new LinkedList());
536	shouldThrow();
537	} catch (IndexOutOfBoundsException success) {}
538	}
539
540	/**
541	* listIterator throws an IndexOutOfBoundsException on a negative index
542	*/
543	public void testListIterator1_IndexOutOfBoundsException() {
544	try {
545	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
546	c.listIterator(-1);
547	shouldThrow();
548	} catch (IndexOutOfBoundsException success) {}
549	}
550
551	/**
552	* listIterator throws an IndexOutOfBoundsException on a too high index
553	*/
554	public void testListIterator2_IndexOutOfBoundsException() {
555	try {
556	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
557	c.add("adasd");
558	c.add("asdasdas");
559	c.listIterator(100);
560	shouldThrow();
561	} catch (IndexOutOfBoundsException success) {}
562	}
563
564	/**
565	* subList throws an IndexOutOfBoundsException on a negative index
566	*/
567	public void testSubList1_IndexOutOfBoundsException() {
568	try {
569	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
570	c.subList(-1,100);
571	shouldThrow();
572	} catch (IndexOutOfBoundsException success) {}
573	}
574
575	/**
576	* subList throws an IndexOutOfBoundsException on a too high index
577	*/
578	public void testSubList2_IndexOutOfBoundsException() {
579	try {
580	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
581	c.add("asdasd");
582	c.subList(1,100);
583	shouldThrow();
584	} catch (IndexOutOfBoundsException success) {}
585	}
586
587	/**
588	* subList throws IndexOutOfBoundsException when the second index
589	* is lower then the first
590	*/
591	public void testSubList3_IndexOutOfBoundsException() {
592	try {
593	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
594	c.subList(3,1);
595	shouldThrow();
596	} catch (IndexOutOfBoundsException success) {}
597	}
598
599	/**
600	* a deserialized serialized list is equal
601	*/
602	public void testSerialization() throws Exception {
603	List x = populatedArray(SIZE);
604	List y = serialClone(x);
605
606	assertTrue(x != y);
607	assertEquals(x.size(), y.size());
608	assertEquals(x.toString(), y.toString());
609	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
610	assertEquals(x, y);
611	assertEquals(y, x);
612	while (!x.isEmpty()) {
613	assertFalse(y.isEmpty());
614	assertEquals(x.remove(0), y.remove(0));
615	}
616	assertTrue(y.isEmpty());
617	}
618
619	}