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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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public class CopyOnWriteArraySetTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(CopyOnWriteArraySetTest.class); |
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return new TestSuite(CopyOnWriteArraySetTest.class); |
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} |
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static CopyOnWriteArraySet populatedSet(int n){ |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(); |
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static CopyOnWriteArraySet populatedSet(int n) { |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(); |
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assertTrue(a.isEmpty()); |
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for (int i = 0; i < n; ++i) |
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for (int i = 0; i < n; ++i) |
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a.add(new Integer(i)); |
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assertFalse(a.isEmpty()); |
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assertEquals(n, a.size()); |
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* Default-constructed set is empty |
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*/ |
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public void testConstructor() { |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(); |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(); |
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assertTrue(a.isEmpty()); |
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} |
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|
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertTrue(a.contains(ints[i])); |
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} |
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|
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|
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|
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/** |
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* addAll adds each element from the given collection |
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* addAll adds each element from the given collection |
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*/ |
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public void testAddAll() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(five); |
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full.addAll(v); |
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assertEquals(6, full.size()); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(five); |
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full.addAll(v); |
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assertEquals(6, full.size()); |
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} |
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|
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/** |
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* addAll adds each element from the given collection that did not |
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* addAll adds each element from the given collection that did not |
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* already exist in the set |
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*/ |
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public void testAddAll2() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(one); // will not add this element |
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full.addAll(v); |
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assertEquals(5, full.size()); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(one); // will not add this element |
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full.addAll(v); |
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assertEquals(5, full.size()); |
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} |
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|
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/** |
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* add will not add the element if it already exists in the set |
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* add will not add the element if it already exists in the set |
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*/ |
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public void testAdd2() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.add(one); |
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assertEquals(3, full.size()); |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.add(one); |
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assertEquals(3, full.size()); |
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} |
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/** |
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* add adds the element when it does not exist |
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* in the set |
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* add adds the element when it does not exist |
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* in the set |
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*/ |
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public void testAdd3() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.add(three); |
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assertTrue(full.contains(three)); |
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} |
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/** |
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* clear removes all elements from the set |
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* clear removes all elements from the set |
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*/ |
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public void testClear() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.clear(); |
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assertEquals(0, full.size()); |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.clear(); |
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assertEquals(0, full.size()); |
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} |
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/** |
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* contains returns true for added elements |
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*/ |
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public void testContains() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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assertTrue(full.contains(one)); |
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assertFalse(full.contains(five)); |
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CopyOnWriteArraySet full = populatedSet(3); |
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assertTrue(full.contains(one)); |
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assertFalse(full.contains(five)); |
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} |
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|
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/** |
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* Sets with equal elements are equal |
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*/ |
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public void testEquals() { |
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CopyOnWriteArraySet a = populatedSet(3); |
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CopyOnWriteArraySet b = populatedSet(3); |
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CopyOnWriteArraySet a = populatedSet(3); |
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CopyOnWriteArraySet b = populatedSet(3); |
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assertTrue(a.equals(b)); |
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assertTrue(b.equals(a)); |
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assertEquals(a.hashCode(), b.hashCode()); |
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assertEquals(a.hashCode(), b.hashCode()); |
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} |
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|
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/** |
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* containsAll returns true for collections with subset of elements |
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* containsAll returns true for collections with subset of elements |
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*/ |
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public void testContainsAll() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
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v.add(two); |
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assertTrue(full.containsAll(v)); |
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v.add(six); |
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assertFalse(full.containsAll(v)); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
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v.add(two); |
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assertTrue(full.containsAll(v)); |
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v.add(six); |
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assertFalse(full.containsAll(v)); |
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} |
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/** |
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* isEmpty is true when empty, else false |
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* isEmpty is true when empty, else false |
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*/ |
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public void testIsEmpty() { |
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CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); |
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CopyOnWriteArraySet full = populatedSet(3); |
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assertTrue(empty.isEmpty()); |
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assertFalse(full.isEmpty()); |
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CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); |
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CopyOnWriteArraySet full = populatedSet(3); |
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assertTrue(empty.isEmpty()); |
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assertFalse(full.isEmpty()); |
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} |
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/** |
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* iterator() returns an iterator containing the elements of the set |
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* iterator() returns an iterator containing the elements of the set |
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*/ |
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public void testIterator() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Iterator i = full.iterator(); |
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int j; |
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for(j = 0; i.hasNext(); j++) |
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assertEquals(j, ((Integer)i.next()).intValue()); |
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assertEquals(3, j); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Iterator i = full.iterator(); |
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int j; |
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for (j = 0; i.hasNext(); j++) |
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assertEquals(j, i.next()); |
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assertEquals(3, j); |
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} |
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/** |
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* iterator remove is unsupported |
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*/ |
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public void testIteratorRemove () { |
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CopyOnWriteArraySet full = populatedSet(3); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Iterator it = full.iterator(); |
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it.next(); |
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try { |
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it.remove(); |
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shouldThrow(); |
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} |
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catch (UnsupportedOperationException success) {} |
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} catch (UnsupportedOperationException success) {} |
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} |
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/** |
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* toString holds toString of elements |
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*/ |
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public void testToString() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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CopyOnWriteArraySet full = populatedSet(3); |
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String s = full.toString(); |
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for (int i = 0; i < 3; ++i) { |
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assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
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} |
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} |
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} |
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|
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/** |
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* removeAll removes all elements from the given collection |
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* removeAll removes all elements from the given collection |
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*/ |
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public void testRemoveAll() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
203 |
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v.add(two); |
204 |
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full.removeAll(v); |
205 |
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assertEquals(1, full.size()); |
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CopyOnWriteArraySet full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
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v.add(two); |
204 |
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full.removeAll(v); |
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assertEquals(1, full.size()); |
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} |
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* remove removes an element |
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*/ |
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public void testRemove() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.remove(one); |
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CopyOnWriteArraySet full = populatedSet(3); |
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full.remove(one); |
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assertFalse(full.contains(one)); |
216 |
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assertEquals(2, full.size()); |
216 |
> |
assertEquals(2, full.size()); |
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} |
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/** |
220 |
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* size returns the number of elements |
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* size returns the number of elements |
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*/ |
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public void testSize() { |
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CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); |
224 |
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CopyOnWriteArraySet full = populatedSet(3); |
225 |
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assertEquals(3, full.size()); |
226 |
< |
assertEquals(0, empty.size()); |
223 |
> |
CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); |
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CopyOnWriteArraySet full = populatedSet(3); |
225 |
> |
assertEquals(3, full.size()); |
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> |
assertEquals(0, empty.size()); |
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} |
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|
229 |
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/** |
230 |
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* toArray returns an Object array containing all elements from the set |
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* toArray returns an Object array containing all elements from the set |
231 |
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*/ |
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public void testToArray() { |
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< |
CopyOnWriteArraySet full = populatedSet(3); |
234 |
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Object[] o = full.toArray(); |
235 |
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assertEquals(3, o.length); |
236 |
< |
assertEquals(0, ((Integer)o[0]).intValue()); |
237 |
< |
assertEquals(1, ((Integer)o[1]).intValue()); |
238 |
< |
assertEquals(2, ((Integer)o[2]).intValue()); |
233 |
> |
CopyOnWriteArraySet full = populatedSet(3); |
234 |
> |
Object[] o = full.toArray(); |
235 |
> |
assertEquals(3, o.length); |
236 |
> |
assertEquals(0, o[0]); |
237 |
> |
assertEquals(1, o[1]); |
238 |
> |
assertEquals(2, o[2]); |
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} |
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|
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/** |
242 |
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* toArray returns an Integer array containing all elements from |
243 |
< |
* the set |
242 |
> |
* toArray returns an Integer array containing all elements from |
243 |
> |
* the set |
244 |
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*/ |
245 |
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public void testToArray2() { |
246 |
< |
CopyOnWriteArraySet full = populatedSet(3); |
247 |
< |
Integer[] i = new Integer[3]; |
248 |
< |
i = (Integer[])full.toArray(i); |
249 |
< |
assertEquals(3, i.length); |
250 |
< |
assertEquals(0, i[0].intValue()); |
251 |
< |
assertEquals(1, i[1].intValue()); |
252 |
< |
assertEquals(2, i[2].intValue()); |
246 |
> |
CopyOnWriteArraySet full = populatedSet(3); |
247 |
> |
Integer[] i = new Integer[3]; |
248 |
> |
i = (Integer[])full.toArray(i); |
249 |
> |
assertEquals(3, i.length); |
250 |
> |
assertEquals(0, (int) i[0]); |
251 |
> |
assertEquals(1, (int) i[1]); |
252 |
> |
assertEquals(2, (int) i[2]); |
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} |
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|
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|
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c.add("zfasdfsdf"); |
264 |
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c.add("asdadasd"); |
265 |
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c.toArray(new Long[5]); |
266 |
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shouldThrow(); |
267 |
< |
} catch(ArrayStoreException e){} |
266 |
> |
shouldThrow(); |
267 |
> |
} catch (ArrayStoreException success) {} |
268 |
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} |
269 |
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|
270 |
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/** |
271 |
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* A deserialized serialized set is equal |
272 |
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*/ |
273 |
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public void testSerialization() { |
273 |
> |
public void testSerialization() throws Exception { |
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CopyOnWriteArraySet q = populatedSet(SIZE); |
275 |
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|
276 |
< |
try { |
277 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
278 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
279 |
< |
out.writeObject(q); |
280 |
< |
out.close(); |
281 |
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|
282 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
283 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
284 |
< |
CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject(); |
285 |
< |
assertEquals(q.size(), r.size()); |
286 |
< |
assertTrue(q.equals(r)); |
288 |
< |
assertTrue(r.equals(q)); |
289 |
< |
} catch(Exception e){ |
290 |
< |
unexpectedException(); |
291 |
< |
} |
276 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
277 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
278 |
> |
out.writeObject(q); |
279 |
> |
out.close(); |
280 |
> |
|
281 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
282 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
283 |
> |
CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject(); |
284 |
> |
assertEquals(q.size(), r.size()); |
285 |
> |
assertTrue(q.equals(r)); |
286 |
> |
assertTrue(r.equals(q)); |
287 |
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} |
288 |
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|
289 |
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} |