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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.LinkedList; |
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import java.util.List; |
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import java.util.ListIterator; |
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import java.util.NoSuchElementException; |
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import java.util.Vector; |
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import java.util.concurrent.CopyOnWriteArrayList; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class CopyOnWriteArrayListTest 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(CopyOnWriteArrayListTest.class); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return CopyOnWriteArrayList.class; } |
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public List emptyCollection() { return new CopyOnWriteArrayList(); } |
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public Object makeElement(int i) { return i; } |
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public boolean isConcurrent() { return true; } |
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public boolean permitsNulls() { return true; } |
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} |
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class SubListImplementation extends Implementation { |
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public List emptyCollection() { |
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return super.emptyCollection().subList(0, 0); |
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} |
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} |
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return newTestSuite( |
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CopyOnWriteArrayListTest.class, |
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CollectionTest.testSuite(new Implementation()), |
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CollectionTest.testSuite(new SubListImplementation())); |
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} |
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static CopyOnWriteArrayList<Integer> populatedArray(int n) { |
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CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>(); |
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CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<>(); |
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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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} |
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static CopyOnWriteArrayList<Integer> populatedArray(Integer[] elements) { |
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CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>(); |
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CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<>(); |
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assertTrue(a.isEmpty()); |
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for (int i = 0; i < elements.length; i++) |
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a.add(elements[i]); |
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*/ |
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public void testConstructor2() { |
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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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CopyOnWriteArrayList a = new CopyOnWriteArrayList(ints); |
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for (int i = 0; i < SIZE; ++i) |
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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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CopyOnWriteArrayList a = new CopyOnWriteArrayList(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 element from the given collection, including duplicates |
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*/ |
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public void testAddAll() { |
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CopyOnWriteArrayList full = populatedArray(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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assertTrue(full.addAll(Arrays.asList(three, four, five))); |
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assertEquals(6, full.size()); |
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assertTrue(full.addAll(Arrays.asList(three, four, five))); |
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assertEquals(9, full.size()); |
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} |
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/** |
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*/ |
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public void testAddAllAbsent() { |
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CopyOnWriteArrayList full = populatedArray(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.addAllAbsent(v); |
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// "one" is duplicate and will not be added |
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assertEquals(2, full.addAllAbsent(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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assertEquals(0, full.addAllAbsent(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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} |
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CopyOnWriteArrayList b = populatedArray(3); |
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assertTrue(a.equals(b)); |
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assertTrue(b.equals(a)); |
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assertTrue(a.containsAll(b)); |
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assertTrue(b.containsAll(a)); |
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assertEquals(a.hashCode(), b.hashCode()); |
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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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assertTrue(a.containsAll(b)); |
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assertFalse(b.containsAll(a)); |
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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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assertTrue(a.containsAll(b)); |
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assertTrue(b.containsAll(a)); |
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assertEquals(a.hashCode(), b.hashCode()); |
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assertFalse(a.equals(null)); |
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} |
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/** |
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* containsAll returns true for collection 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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CopyOnWriteArrayList full = populatedArray(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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> |
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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try { |
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> |
full.containsAll(null); |
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shouldThrow(); |
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> |
} catch (NullPointerException success) {} |
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} |
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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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shuffle(elements); |
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Collection<Integer> full = populatedArray(elements); |
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Iterator it = full.iterator(); |
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ListIterator i = full.listIterator(1); |
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int j; |
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for (j = 0; i.hasNext(); j++) |
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assertEquals(j+1, i.next()); |
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assertEquals(j + 1, i.next()); |
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assertEquals(2, j); |
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} |
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*/ |
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public void testRemoveAll() { |
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CopyOnWriteArrayList full = populatedArray(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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> |
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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} |
416 |
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|
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Integer[] elements = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; i++) |
447 |
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elements[i] = i; |
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< |
Collections.shuffle(Arrays.asList(elements)); |
448 |
> |
shuffle(elements); |
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Collection<Integer> full = populatedArray(elements); |
450 |
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|
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assertTrue(Arrays.equals(elements, full.toArray())); |
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a = new Integer[0]; |
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assertSame(a, empty.toArray(a)); |
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|
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a = new Integer[SIZE/2]; |
466 |
> |
a = new Integer[SIZE / 2]; |
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Arrays.fill(a, 42); |
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assertSame(a, empty.toArray(a)); |
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assertNull(a[0]); |
473 |
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Integer[] elements = new Integer[SIZE]; |
474 |
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for (int i = 0; i < SIZE; i++) |
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elements[i] = i; |
476 |
< |
Collections.shuffle(Arrays.asList(elements)); |
476 |
> |
shuffle(elements); |
477 |
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Collection<Integer> full = populatedArray(elements); |
478 |
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|
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Arrays.fill(a, 42); |
487 |
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assertSame(a, full.toArray(a)); |
488 |
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assertTrue(Arrays.equals(elements, a)); |
489 |
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|
490 |
< |
a = new Integer[2*SIZE]; |
490 |
> |
a = new Integer[2 * SIZE]; |
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Arrays.fill(a, 42); |
492 |
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assertSame(a, full.toArray(a)); |
493 |
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assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE))); |