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<Integer> populatedArray(int n) {
        CopyOnWriteArrayList<Integer> a
            = new CopyOnWriteArrayList<Integer>();
        assertTrue(a.isEmpty());
        for (int i = 0; i < n; ++i)
            a.add(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() {
        final int size = 3;
        CopyOnWriteArrayList<Integer> full = populatedArray(size);
        Integer[] ints = new Integer[size];
        assertSame(ints, full.toArray(ints));
        Iterator<Integer> it = full.iterator();
        for (int i = 0; i < size; i++)
            assertSame(ints[i], it.next());
        assertFalse(it.hasNext());
    }

    /**
     * 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(3, s.size());
        s.set(2, m1);
        assertEquals(a.get(4), m1);
        s.clear();
        assertEquals(7, a.size());
    }

    // 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:	1.25
Committed:	Sat Nov 26 07:39:02 2011 UTC (12 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.24:	+12 -10 lines
Log Message:	improve toArray methods
#	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<Integer> populatedArray(int n) {
29	CopyOnWriteArrayList<Integer> a
30	= new CopyOnWriteArrayList<Integer>();
31	assertTrue(a.isEmpty());
32	for (int i = 0; i < n; ++i)
33	a.add(i);
34	assertFalse(a.isEmpty());
35	assertEquals(n, a.size());
36	return a;
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	* addAll adds each element from the given collection
73	*/
74	public void testAddAll() {
75	CopyOnWriteArrayList full = populatedArray(3);
76	Vector v = new Vector();
77	v.add(three);
78	v.add(four);
79	v.add(five);
80	full.addAll(v);
81	assertEquals(6, full.size());
82	}
83
84	/**
85	* addAllAbsent adds each element from the given collection that did not
86	* already exist in the List
87	*/
88	public void testAddAllAbsent() {
89	CopyOnWriteArrayList full = populatedArray(3);
90	Vector v = new Vector();
91	v.add(three);
92	v.add(four);
93	v.add(one); // will not add this element
94	full.addAllAbsent(v);
95	assertEquals(5, full.size());
96	}
97
98	/**
99	* addIfAbsent will not add the element if it already exists in the list
100	*/
101	public void testAddIfAbsent() {
102	CopyOnWriteArrayList full = populatedArray(SIZE);
103	full.addIfAbsent(one);
104	assertEquals(SIZE, full.size());
105	}
106
107	/**
108	* addIfAbsent adds the element when it does not exist in the list
109	*/
110	public void testAddIfAbsent2() {
111	CopyOnWriteArrayList full = populatedArray(SIZE);
112	full.addIfAbsent(three);
113	assertTrue(full.contains(three));
114	}
115
116	/**
117	* clear removes all elements from the list
118	*/
119	public void testClear() {
120	CopyOnWriteArrayList full = populatedArray(SIZE);
121	full.clear();
122	assertEquals(0, full.size());
123	}
124
125	/**
126	* Cloned list is equal
127	*/
128	public void testClone() {
129	CopyOnWriteArrayList l1 = populatedArray(SIZE);
130	CopyOnWriteArrayList l2 = (CopyOnWriteArrayList)(l1.clone());
131	assertEquals(l1, l2);
132	l1.clear();
133	assertFalse(l1.equals(l2));
134	}
135
136	/**
137	* contains is true for added elements
138	*/
139	public void testContains() {
140	CopyOnWriteArrayList full = populatedArray(3);
141	assertTrue(full.contains(one));
142	assertFalse(full.contains(five));
143	}
144
145	/**
146	* adding at an index places it in the indicated index
147	*/
148	public void testAddIndex() {
149	CopyOnWriteArrayList full = populatedArray(3);
150	full.add(0, m1);
151	assertEquals(4, full.size());
152	assertEquals(m1, full.get(0));
153	assertEquals(zero, full.get(1));
154
155	full.add(2, m2);
156	assertEquals(5, full.size());
157	assertEquals(m2, full.get(2));
158	assertEquals(two, full.get(4));
159	}
160
161	/**
162	* lists with same elements are equal and have same hashCode
163	*/
164	public void testEquals() {
165	CopyOnWriteArrayList a = populatedArray(3);
166	CopyOnWriteArrayList b = populatedArray(3);
167	assertTrue(a.equals(b));
168	assertTrue(b.equals(a));
169	assertEquals(a.hashCode(), b.hashCode());
170	a.add(m1);
171	assertFalse(a.equals(b));
172	assertFalse(b.equals(a));
173	b.add(m1);
174	assertTrue(a.equals(b));
175	assertTrue(b.equals(a));
176	assertEquals(a.hashCode(), b.hashCode());
177	}
178
179	/**
180	* containsAll returns true for collection with subset of elements
181	*/
182	public void testContainsAll() {
183	CopyOnWriteArrayList full = populatedArray(3);
184	Vector v = new Vector();
185	v.add(one);
186	v.add(two);
187	assertTrue(full.containsAll(v));
188	v.add(six);
189	assertFalse(full.containsAll(v));
190	}
191
192	/**
193	* get returns the value at the given index
194	*/
195	public void testGet() {
196	CopyOnWriteArrayList full = populatedArray(3);
197	assertEquals(0, full.get(0));
198	}
199
200	/**
201	* indexOf gives the index for the given object
202	*/
203	public void testIndexOf() {
204	CopyOnWriteArrayList full = populatedArray(3);
205	assertEquals(1, full.indexOf(one));
206	assertEquals(-1, full.indexOf("puppies"));
207	}
208
209	/**
210	* indexOf gives the index based on the given index
211	* at which to start searching
212	*/
213	public void testIndexOf2() {
214	CopyOnWriteArrayList full = populatedArray(3);
215	assertEquals(1, full.indexOf(one, 0));
216	assertEquals(-1, full.indexOf(one, 2));
217	}
218
219	/**
220	* isEmpty returns true when empty, else false
221	*/
222	public void testIsEmpty() {
223	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
224	CopyOnWriteArrayList full = populatedArray(SIZE);
225	assertTrue(empty.isEmpty());
226	assertFalse(full.isEmpty());
227	}
228
229	/**
230	* iterator() returns an iterator containing the elements of the list
231	*/
232	public void testIterator() {
233	CopyOnWriteArrayList full = populatedArray(SIZE);
234	Iterator i = full.iterator();
235	int j;
236	for (j = 0; i.hasNext(); j++)
237	assertEquals(j, i.next());
238	assertEquals(SIZE, j);
239	}
240
241	/**
242	* iterator.remove throws UnsupportedOperationException
243	*/
244	public void testIteratorRemove() {
245	CopyOnWriteArrayList full = populatedArray(SIZE);
246	Iterator it = full.iterator();
247	it.next();
248	try {
249	it.remove();
250	shouldThrow();
251	} catch (UnsupportedOperationException success) {}
252	}
253
254	/**
255	* toString contains toString of elements
256	*/
257	public void testToString() {
258	CopyOnWriteArrayList full = populatedArray(3);
259	String s = full.toString();
260	for (int i = 0; i < 3; ++i) {
261	assertTrue(s.contains(String.valueOf(i)));
262	}
263	}
264
265	/**
266	* lastIndexOf returns the index for the given object
267	*/
268	public void testLastIndexOf1() {
269	CopyOnWriteArrayList full = populatedArray(3);
270	full.add(one);
271	full.add(three);
272	assertEquals(3, full.lastIndexOf(one));
273	assertEquals(-1, full.lastIndexOf(six));
274	}
275
276	/**
277	* lastIndexOf returns the index from the given starting point
278	*/
279	public void testLastIndexOf2() {
280	CopyOnWriteArrayList full = populatedArray(3);
281	full.add(one);
282	full.add(three);
283	assertEquals(3, full.lastIndexOf(one, 4));
284	assertEquals(-1, full.lastIndexOf(three, 3));
285	}
286
287	/**
288	* listIterator traverses all elements
289	*/
290	public void testListIterator1() {
291	CopyOnWriteArrayList full = populatedArray(SIZE);
292	ListIterator i = full.listIterator();
293	int j;
294	for (j = 0; i.hasNext(); j++)
295	assertEquals(j, i.next());
296	assertEquals(SIZE, j);
297	}
298
299	/**
300	* listIterator only returns those elements after the given index
301	*/
302	public void testListIterator2() {
303	CopyOnWriteArrayList full = populatedArray(3);
304	ListIterator i = full.listIterator(1);
305	int j;
306	for (j = 0; i.hasNext(); j++)
307	assertEquals(j+1, i.next());
308	assertEquals(2, j);
309	}
310
311	/**
312	* remove removes and returns the object at the given index
313	*/
314	public void testRemove() {
315	CopyOnWriteArrayList full = populatedArray(3);
316	assertEquals(2, full.remove(2));
317	assertEquals(2, full.size());
318	}
319
320	/**
321	* removeAll removes all elements from the given collection
322	*/
323	public void testRemoveAll() {
324	CopyOnWriteArrayList full = populatedArray(3);
325	Vector v = new Vector();
326	v.add(one);
327	v.add(two);
328	full.removeAll(v);
329	assertEquals(1, full.size());
330	}
331
332	/**
333	* set changes the element at the given index
334	*/
335	public void testSet() {
336	CopyOnWriteArrayList full = populatedArray(3);
337	assertEquals(2, full.set(2, four));
338	assertEquals(4, full.get(2));
339	}
340
341	/**
342	* size returns the number of elements
343	*/
344	public void testSize() {
345	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
346	CopyOnWriteArrayList full = populatedArray(SIZE);
347	assertEquals(SIZE, full.size());
348	assertEquals(0, empty.size());
349	}
350
351	/**
352	* toArray returns an Object array containing all elements from the list
353	*/
354	public void testToArray() {
355	CopyOnWriteArrayList full = populatedArray(3);
356	Object[] o = full.toArray();
357	assertEquals(3, o.length);
358	assertEquals(0, o[0]);
359	assertEquals(1, o[1]);
360	assertEquals(2, o[2]);
361	}
362
363	/**
364	* toArray returns an Integer array containing all elements from
365	* the list
366	*/
367	public void testToArray2() {
368	final int size = 3;
369	CopyOnWriteArrayList<Integer> full = populatedArray(size);
370	Integer[] ints = new Integer[size];
371	assertSame(ints, full.toArray(ints));
372	Iterator<Integer> it = full.iterator();
373	for (int i = 0; i < size; i++)
374	assertSame(ints[i], it.next());
375	assertFalse(it.hasNext());
376	}
377
378	/**
379	* sublists contains elements at indexes offset from their base
380	*/
381	public void testSubList() {
382	CopyOnWriteArrayList a = populatedArray(10);
383	assertTrue(a.subList(1,1).isEmpty());
384	for (int j = 0; j < 9; ++j) {
385	for (int i = j ; i < 10; ++i) {
386	List b = a.subList(j,i);
387	for (int k = j; k < i; ++k) {
388	assertEquals(new Integer(k), b.get(k-j));
389	}
390	}
391	}
392
393	List s = a.subList(2, 5);
394	assertEquals(3, s.size());
395	s.set(2, m1);
396	assertEquals(a.get(4), m1);
397	s.clear();
398	assertEquals(7, a.size());
399	}
400
401	// Exception tests
402
403	/**
404	* toArray throws an ArrayStoreException when the given array
405	* can not store the objects inside the list
406	*/
407	public void testToArray_ArrayStoreException() {
408	try {
409	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
410	c.add("zfasdfsdf");
411	c.add("asdadasd");
412	c.toArray(new Long[5]);
413	shouldThrow();
414	} catch (ArrayStoreException success) {}
415	}
416
417	/**
418	* get throws an IndexOutOfBoundsException on a negative index
419	*/
420	public void testGet1_IndexOutOfBoundsException() {
421	try {
422	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
423	c.get(-1);
424	shouldThrow();
425	} catch (IndexOutOfBoundsException success) {}
426	}
427
428	/**
429	* get throws an IndexOutOfBoundsException on a too high index
430	*/
431	public void testGet2_IndexOutOfBoundsException() {
432	try {
433	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
434	c.add("asdasd");
435	c.add("asdad");
436	c.get(100);
437	shouldThrow();
438	} catch (IndexOutOfBoundsException success) {}
439	}
440
441	/**
442	* set throws an IndexOutOfBoundsException on a negative index
443	*/
444	public void testSet1_IndexOutOfBoundsException() {
445	try {
446	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
447	c.set(-1,"qwerty");
448	shouldThrow();
449	} catch (IndexOutOfBoundsException success) {}
450	}
451
452	/**
453	* set throws an IndexOutOfBoundsException on a too high index
454	*/
455	public void testSet2() {
456	try {
457	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
458	c.add("asdasd");
459	c.add("asdad");
460	c.set(100, "qwerty");
461	shouldThrow();
462	} catch (IndexOutOfBoundsException success) {}
463	}
464
465	/**
466	* add throws an IndexOutOfBoundsException on a negative index
467	*/
468	public void testAdd1_IndexOutOfBoundsException() {
469	try {
470	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
471	c.add(-1,"qwerty");
472	shouldThrow();
473	} catch (IndexOutOfBoundsException success) {}
474	}
475
476	/**
477	* add throws an IndexOutOfBoundsException on a too high index
478	*/
479	public void testAdd2_IndexOutOfBoundsException() {
480	try {
481	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
482	c.add("asdasd");
483	c.add("asdasdasd");
484	c.add(100, "qwerty");
485	shouldThrow();
486	} catch (IndexOutOfBoundsException success) {}
487	}
488
489	/**
490	* remove throws an IndexOutOfBoundsException on a negative index
491	*/
492	public void testRemove1_IndexOutOfBounds() {
493	try {
494	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
495	c.remove(-1);
496	shouldThrow();
497	} catch (IndexOutOfBoundsException success) {}
498	}
499
500	/**
501	* remove throws an IndexOutOfBoundsException on a too high index
502	*/
503	public void testRemove2_IndexOutOfBounds() {
504	try {
505	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
506	c.add("asdasd");
507	c.add("adasdasd");
508	c.remove(100);
509	shouldThrow();
510	} catch (IndexOutOfBoundsException success) {}
511	}
512
513	/**
514	* addAll throws an IndexOutOfBoundsException on a negative index
515	*/
516	public void testAddAll1_IndexOutOfBoundsException() {
517	try {
518	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
519	c.addAll(-1,new LinkedList());
520	shouldThrow();
521	} catch (IndexOutOfBoundsException success) {}
522	}
523
524	/**
525	* addAll throws an IndexOutOfBoundsException on a too high index
526	*/
527	public void testAddAll2_IndexOutOfBoundsException() {
528	try {
529	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
530	c.add("asdasd");
531	c.add("asdasdasd");
532	c.addAll(100, new LinkedList());
533	shouldThrow();
534	} catch (IndexOutOfBoundsException success) {}
535	}
536
537	/**
538	* listIterator throws an IndexOutOfBoundsException on a negative index
539	*/
540	public void testListIterator1_IndexOutOfBoundsException() {
541	try {
542	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
543	c.listIterator(-1);
544	shouldThrow();
545	} catch (IndexOutOfBoundsException success) {}
546	}
547
548	/**
549	* listIterator throws an IndexOutOfBoundsException on a too high index
550	*/
551	public void testListIterator2_IndexOutOfBoundsException() {
552	try {
553	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
554	c.add("adasd");
555	c.add("asdasdas");
556	c.listIterator(100);
557	shouldThrow();
558	} catch (IndexOutOfBoundsException success) {}
559	}
560
561	/**
562	* subList throws an IndexOutOfBoundsException on a negative index
563	*/
564	public void testSubList1_IndexOutOfBoundsException() {
565	try {
566	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
567	c.subList(-1,100);
568	shouldThrow();
569	} catch (IndexOutOfBoundsException success) {}
570	}
571
572	/**
573	* subList throws an IndexOutOfBoundsException on a too high index
574	*/
575	public void testSubList2_IndexOutOfBoundsException() {
576	try {
577	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
578	c.add("asdasd");
579	c.subList(1,100);
580	shouldThrow();
581	} catch (IndexOutOfBoundsException success) {}
582	}
583
584	/**
585	* subList throws IndexOutOfBoundsException when the second index
586	* is lower then the first
587	*/
588	public void testSubList3_IndexOutOfBoundsException() {
589	try {
590	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
591	c.subList(3,1);
592	shouldThrow();
593	} catch (IndexOutOfBoundsException success) {}
594	}
595
596	/**
597	* a deserialized serialized list is equal
598	*/
599	public void testSerialization() throws Exception {
600	List x = populatedArray(SIZE);
601	List y = serialClone(x);
602
603	assertTrue(x != y);
604	assertEquals(x.size(), y.size());
605	assertEquals(x.toString(), y.toString());
606	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
607	assertEquals(x, y);
608	assertEquals(y, x);
609	while (!x.isEmpty()) {
610	assertFalse(y.isEmpty());
611	assertEquals(x.remove(0), y.remove(0));
612	}
613	assertTrue(y.isEmpty());
614	}
615
616	}