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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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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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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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public class CopyOnWriteArraySetTest extends TestCase{ |
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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 fullSet(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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} |
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/** |
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* Test to verify addAll correctly adds each element from the given collection |
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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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assertTrue(a.isEmpty()); |
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} |
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|
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/** |
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* Collection-constructed set holds all of its elements |
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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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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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assertTrue(a.contains(ints[i])); |
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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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*/ |
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public void testAddAll(){ |
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CopyOnWriteArraySet full = fullSet(3); |
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Vector v = new Vector(); |
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v.add(new Integer(3)); |
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v.add(new Integer(4)); |
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v.add(new Integer(5)); |
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full.addAll(v); |
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assertEquals(6, full.size()); |
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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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} |
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/** |
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* Test to verify addAllAbsent adds each element from the given collection that did not |
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* already exist in the List |
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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 = fullSet(3); |
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Vector v = new Vector(); |
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v.add(new Integer(3)); |
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v.add(new Integer(4)); |
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v.add(new Integer(1)); // will not add this element |
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full.addAll(v); |
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assertEquals(5, full.size()); |
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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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} |
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/** |
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* Test to verify addIfAbsent will not add the element if it already exists in the list |
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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 = fullSet(3); |
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full.add(new Integer(1)); |
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assertEquals(3, full.size()); |
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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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} |
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/** |
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* test to verify addIfAbsent correctly adds the element when it does not exist in the list |
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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 = fullSet(3); |
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full.add(new Integer(3)); |
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assertTrue(full.contains(new Integer(3))); |
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public void testAdd3() { |
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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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* Test to verify clear correctly removes all elements from the list |
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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 = fullSet(3); |
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full.clear(); |
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assertEquals(0, full.size()); |
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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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} |
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/** |
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* Test to verify contains returns the correct values |
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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 = fullSet(3); |
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assertTrue(full.contains(new Integer(1))); |
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assertFalse(full.contains(new Integer(5))); |
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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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} |
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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 = fullSet(3); |
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CopyOnWriteArraySet b = fullSet(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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a.add(new Integer(-1)); |
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a.add(m1); |
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assertFalse(a.equals(b)); |
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assertFalse(b.equals(a)); |
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b.add(new Integer(-1)); |
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b.add(m1); |
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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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} |
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|
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/** |
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* Test to verify containsAll returns the correct values |
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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 = fullSet(3); |
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Vector v = new Vector(); |
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v.add(new Integer(1)); |
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v.add(new Integer(2)); |
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assertTrue(full.containsAll(v)); |
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v.add(new Integer(6)); |
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assertFalse(full.containsAll(v)); |
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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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} |
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/** |
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* Test to verify isEmpty returns the correct values |
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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 = fullSet(3); |
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assertTrue(empty.isEmpty()); |
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assertFalse(full.isEmpty()); |
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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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} |
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/** |
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* Test to verify iterator() returns an iterator containing the elements of the list |
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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 = fullSet(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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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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} |
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public void testIteratorRemove () { |
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CopyOnWriteArraySet full = fullSet(3); |
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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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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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fail("should throw"); |
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} |
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catch (UnsupportedOperationException success) {} |
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shouldThrow(); |
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} catch (UnsupportedOperationException success) {} |
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} |
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public void testToString(){ |
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CopyOnWriteArraySet full = fullSet(3); |
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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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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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* Test to verify removeAll correctly 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 = fullSet(3); |
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Vector v = new Vector(); |
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v.add(new Integer(1)); |
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v.add(new Integer(2)); |
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full.removeAll(v); |
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assertEquals(1, full.size()); |
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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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assertEquals(1, full.size()); |
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} |
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public void testRemove(){ |
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CopyOnWriteArraySet full = fullSet(3); |
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full.remove(new Integer(1)); |
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assertFalse(full.contains(new Integer(1))); |
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assertEquals(2, 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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assertFalse(full.contains(one)); |
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> |
assertEquals(2, full.size()); |
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} |
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/** |
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* Test to verify size returns the correct values |
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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 = fullSet(3); |
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< |
assertEquals(3, full.size()); |
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assertEquals(0, empty.size()); |
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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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> |
assertEquals(3, full.size()); |
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> |
assertEquals(0, empty.size()); |
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} |
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/** |
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* Test to verify toArray returns an Object array containing all elements from the list |
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> |
* toArray returns an Object array containing all elements from the set |
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*/ |
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< |
public void testToArray(){ |
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< |
CopyOnWriteArraySet full = fullSet(3); |
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Object[] o = full.toArray(); |
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assertEquals(3, o.length); |
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< |
assertEquals(0, ((Integer)o[0]).intValue()); |
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< |
assertEquals(1, ((Integer)o[1]).intValue()); |
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< |
assertEquals(2, ((Integer)o[2]).intValue()); |
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> |
public void testToArray() { |
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> |
CopyOnWriteArraySet full = populatedSet(3); |
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> |
Object[] o = full.toArray(); |
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> |
assertEquals(3, o.length); |
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> |
assertEquals(0, o[0]); |
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> |
assertEquals(1, o[1]); |
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> |
assertEquals(2, o[2]); |
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} |
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|
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/** |
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< |
* test to verify toArray returns an Integer array containing all elements from the list |
| 242 |
> |
* toArray returns an Integer array containing all elements from |
| 243 |
> |
* the set |
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*/ |
| 245 |
< |
public void testToArray2(){ |
| 246 |
< |
CopyOnWriteArraySet full = fullSet(3); |
| 247 |
< |
Integer[] i = new Integer[3]; |
| 248 |
< |
i = (Integer[])full.toArray(i); |
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< |
assertEquals(3, i.length); |
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< |
assertEquals(0, i[0].intValue()); |
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< |
assertEquals(1, i[1].intValue()); |
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< |
assertEquals(2, i[2].intValue()); |
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> |
public void testToArray2() { |
| 246 |
> |
CopyOnWriteArraySet full = populatedSet(3); |
| 247 |
> |
Integer[] i = new Integer[3]; |
| 248 |
> |
i = (Integer[])full.toArray(i); |
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> |
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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– |
|
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– |
// Exception tests |
| 224 |
– |
|
| 256 |
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/** |
| 257 |
< |
* Test to verify toArray throws an ArrayStoreException when the given array |
| 258 |
< |
* can not store the objects inside the list |
| 257 |
> |
* toArray throws an ArrayStoreException when the given array can |
| 258 |
> |
* not store the objects inside the set |
| 259 |
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*/ |
| 260 |
< |
public void testToArray_ArrayStoreException(){ |
| 261 |
< |
try{ |
| 260 |
> |
public void testToArray_ArrayStoreException() { |
| 261 |
> |
try { |
| 262 |
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CopyOnWriteArraySet c = new CopyOnWriteArraySet(); |
| 263 |
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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 |
< |
fail("Object[] toArray(Object[]) should throw ArrayStoreException"); |
| 267 |
< |
}catch(ArrayStoreException e){} |
| 266 |
> |
shouldThrow(); |
| 267 |
> |
} catch (ArrayStoreException success) {} |
| 268 |
> |
} |
| 269 |
> |
|
| 270 |
> |
/** |
| 271 |
> |
* A deserialized serialized set is equal |
| 272 |
> |
*/ |
| 273 |
> |
public void testSerialization() throws Exception { |
| 274 |
> |
CopyOnWriteArraySet q = populatedSet(SIZE); |
| 275 |
> |
|
| 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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|
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} |
