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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Set; |
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import java.util.Vector; |
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import java.util.concurrent.CopyOnWriteArraySet; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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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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main(suite(), args); |
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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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assertTrue(a.isEmpty()); |
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for (int i = 0; i < n; i++) |
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a.add(i); |
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assertFalse(a.isEmpty()); |
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assertEquals(n == 0, a.isEmpty()); |
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assertEquals(n, a.size()); |
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return a; |
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} |
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*/ |
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public void testConstructor3() { |
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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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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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} |
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/** |
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* addAll adds each element from the given collection |
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* addAll adds each non-duplicate 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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Set full = populatedSet(3); |
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assertTrue(full.addAll(Arrays.asList(three, four, five))); |
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assertEquals(6, full.size()); |
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assertFalse(full.addAll(Arrays.asList(three, four, five))); |
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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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* already exist in the set |
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* addAll adds each non-duplicate element from the given collection |
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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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Set full = populatedSet(3); |
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// "one" is duplicate and will not be added |
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assertTrue(full.addAll(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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assertFalse(full.addAll(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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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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*/ |
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public void testAdd2() { |
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CopyOnWriteArraySet full = populatedSet(3); |
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Set 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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* add adds the element when it does not exist 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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Set 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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* 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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Collection full = populatedSet(3); |
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full.clear(); |
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assertEquals(0, full.size()); |
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assertTrue(full.isEmpty()); |
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} |
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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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Collection 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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* 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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Collection full = populatedSet(3); |
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assertTrue(full.containsAll(Arrays.asList())); |
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assertTrue(full.containsAll(Arrays.asList(one))); |
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assertTrue(full.containsAll(Arrays.asList(one, two))); |
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assertFalse(full.containsAll(Arrays.asList(one, two, six))); |
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assertFalse(full.containsAll(Arrays.asList(six))); |
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} |
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|
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/** |
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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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assertTrue(populatedSet(0).isEmpty()); |
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assertFalse(populatedSet(3).isEmpty()); |
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} |
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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 |
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* set in insertion order |
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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, i.next()); |
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assertEquals(3, j); |
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Collection empty = new CopyOnWriteArraySet(); |
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assertFalse(empty.iterator().hasNext()); |
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try { |
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empty.iterator().next(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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|
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Integer[] elements = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; i++) |
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elements[i] = i; |
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Collections.shuffle(Arrays.asList(elements)); |
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Collection<Integer> full = populatedSet(elements); |
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|
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Iterator it = full.iterator(); |
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for (int j = 0; j < SIZE; j++) { |
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assertTrue(it.hasNext()); |
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assertEquals(elements[j], it.next()); |
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} |
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assertIteratorExhausted(it); |
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} |
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|
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/** |
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* iterator of empty collection has no elements |
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*/ |
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public void testEmptyIterator() { |
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assertIteratorExhausted(new CopyOnWriteArraySet().iterator()); |
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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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Collection 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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* 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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assertEquals("[]", new CopyOnWriteArraySet().toString()); |
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Collection 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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for (int i = 0; i < 3; ++i) |
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assertTrue(s.contains(String.valueOf(i))); |
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} |
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assertEquals(new ArrayList(full).toString(), |
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full.toString()); |
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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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*/ |
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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); |
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v.add(two); |
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full.removeAll(v); |
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Set full = populatedSet(3); |
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assertTrue(full.removeAll(Arrays.asList(one, two))); |
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assertEquals(1, full.size()); |
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assertFalse(full.removeAll(Arrays.asList(one, two))); |
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assertEquals(1, full.size()); |
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} |
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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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> |
Collection full = populatedSet(3); |
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full.remove(one); |
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assertFalse(full.contains(one)); |
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assertEquals(2, full.size()); |
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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(); |
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< |
CopyOnWriteArraySet full = populatedSet(3); |
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> |
Collection empty = new CopyOnWriteArraySet(); |
252 |
> |
Collection full = populatedSet(3); |
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assertEquals(3, full.size()); |
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assertEquals(0, empty.size()); |
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} |
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a = new Integer[0]; |
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assertSame(a, empty.toArray(a)); |
286 |
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|
287 |
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a = new Integer[SIZE/2]; |
287 |
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a = new Integer[SIZE / 2]; |
288 |
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Arrays.fill(a, 42); |
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assertSame(a, empty.toArray(a)); |
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assertNull(a[0]); |
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assertSame(a, full.toArray(a)); |
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assertTrue(Arrays.equals(elements, a)); |
310 |
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|
311 |
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a = new Integer[2*SIZE]; |
311 |
> |
a = new Integer[2 * SIZE]; |
312 |
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Arrays.fill(a, 42); |
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assertSame(a, full.toArray(a)); |
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assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE))); |
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* not store the objects inside the set |
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*/ |
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public void testToArray_ArrayStoreException() { |
325 |
+ |
CopyOnWriteArraySet c = new CopyOnWriteArraySet(); |
326 |
+ |
c.add("zfasdfsdf"); |
327 |
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c.add("asdadasd"); |
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try { |
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CopyOnWriteArraySet c = new CopyOnWriteArraySet(); |
308 |
– |
c.add("zfasdfsdf"); |
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– |
c.add("asdadasd"); |
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c.toArray(new Long[5]); |
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shouldThrow(); |
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} catch (ArrayStoreException success) {} |
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Set x = populatedSet(SIZE); |
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Set y = serialClone(x); |
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|
341 |
< |
assertTrue(x != y); |
341 |
> |
assertNotSame(y, x); |
342 |
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assertEquals(x.size(), y.size()); |
343 |
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assertEquals(x.toString(), y.toString()); |
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assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
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assertEquals(x, y); |
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assertEquals(y, x); |
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} |
348 |
+ |
|
349 |
+ |
/** |
350 |
+ |
* addAll is idempotent |
351 |
+ |
*/ |
352 |
+ |
public void testAddAll_idempotent() throws Exception { |
353 |
+ |
Set x = populatedSet(SIZE); |
354 |
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Set y = new CopyOnWriteArraySet(x); |
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y.addAll(x); |
356 |
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assertEquals(x, y); |
357 |
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assertEquals(y, x); |
358 |
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} |
359 |
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|
360 |
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} |