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/* |
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* Written by Doug Lea and Martin Buchholz with assistance from |
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* members of JCP JSR-166 Expert Group and released to the public |
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* domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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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.List; |
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import java.util.Vector; |
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import java.util.concurrent.ThreadLocalRandom; |
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|
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import junit.framework.Test; |
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|
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public class VectorTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return Vector.class; } |
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public List emptyCollection() { return new Vector(); } |
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public Object makeElement(int i) { return JSR166TestCase.itemFor(i); } |
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public boolean isConcurrent() { return false; } |
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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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@SuppressWarnings("unchecked") |
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public List emptyCollection() { |
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List list = super.emptyCollection(); |
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ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
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if (rnd.nextBoolean()) |
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list.add(makeElement(rnd.nextInt())); |
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int i = rnd.nextInt(list.size() + 1); |
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return list.subList(i, i); |
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} |
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} |
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return newTestSuite( |
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VectorTest.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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|
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static Vector<Item> populatedList(int n) { |
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Vector<Item> list = new Vector<>(); |
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assertTrue(list.isEmpty()); |
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for (int i = 0; i < n; i++) |
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mustAdd(list, i); |
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mustEqual(n <= 0, list.isEmpty()); |
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mustEqual(n, list.size()); |
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return list; |
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} |
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|
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/** |
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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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List<Item> list = populatedList(3); |
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assertTrue(list.addAll(Arrays.asList(three, four, five))); |
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mustEqual(6, list.size()); |
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assertTrue(list.addAll(Arrays.asList(three, four, five))); |
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mustEqual(9, list.size()); |
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} |
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|
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/** |
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* clear removes all elements from the list |
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*/ |
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public void testClear() { |
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List<Item> list = populatedList(SIZE); |
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list.clear(); |
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mustEqual(0, list.size()); |
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} |
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|
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/** |
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* Cloned list is equal |
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*/ |
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public void testClone() { |
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Vector<Item> l1 = populatedList(SIZE); |
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@SuppressWarnings("unchecked") |
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Vector<Item> l2 = (Vector<Item>)(l1.clone()); |
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mustEqual(l1, l2); |
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l1.clear(); |
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assertFalse(l1.equals(l2)); |
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} |
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|
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/** |
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* contains is true for added elements |
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*/ |
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public void testContains() { |
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List<Item> list = populatedList(3); |
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mustContain(list, one); |
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mustNotContain(list, five); |
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} |
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|
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/** |
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* adding at an index places it in the indicated index |
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*/ |
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public void testAddIndex() { |
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List<Item> list = populatedList(3); |
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list.add(0, minusOne); |
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mustEqual(4, list.size()); |
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mustEqual(minusOne, list.get(0)); |
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mustEqual(zero, list.get(1)); |
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|
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list.add(2, minusTwo); |
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mustEqual(5, list.size()); |
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mustEqual(minusTwo, list.get(2)); |
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mustEqual(two, list.get(4)); |
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} |
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|
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/** |
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* lists with same elements are equal and have same hashCode |
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*/ |
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public void testEquals() { |
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List<Item> a = populatedList(3); |
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List<Item> b = populatedList(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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mustEqual(a.hashCode(), b.hashCode()); |
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a.add(minusOne); |
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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(minusOne); |
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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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mustEqual(a.hashCode(), b.hashCode()); |
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|
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assertFalse(a.equals(null)); |
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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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*/ |
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public void testContainsAll() { |
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List<Item> list = populatedList(3); |
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assertTrue(list.containsAll(Arrays.asList())); |
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assertTrue(list.containsAll(Arrays.asList(one))); |
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assertTrue(list.containsAll(Arrays.asList(one, two))); |
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assertFalse(list.containsAll(Arrays.asList(one, two, six))); |
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assertFalse(list.containsAll(Arrays.asList(six))); |
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|
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try { |
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list.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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/** |
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* get returns the value at the given index |
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*/ |
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public void testGet() { |
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List<Item> list = populatedList(3); |
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mustEqual(0, list.get(0)); |
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} |
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|
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/** |
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* indexOf(Object) returns the index of the first occurrence of the |
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* specified element in this list, or -1 if this list does not |
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* contain the element |
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*/ |
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public void testIndexOf() { |
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List<Item> list = populatedList(3); |
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mustEqual(-1, list.indexOf(minusTen)); |
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int size = list.size(); |
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for (int i = 0; i < size; i++) { |
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Item I = itemFor(i); |
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mustEqual(i, list.indexOf(I)); |
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mustEqual(i, list.subList(0, size).indexOf(I)); |
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mustEqual(i, list.subList(0, i + 1).indexOf(I)); |
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mustEqual(-1, list.subList(0, i).indexOf(I)); |
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mustEqual(0, list.subList(i, size).indexOf(I)); |
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mustEqual(-1, list.subList(i + 1, size).indexOf(I)); |
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} |
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|
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list.add(one); |
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mustEqual(1, list.indexOf(one)); |
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mustEqual(1, list.subList(0, size + 1).indexOf(one)); |
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mustEqual(0, list.subList(1, size + 1).indexOf(one)); |
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mustEqual(size - 2, list.subList(2, size + 1).indexOf(one)); |
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mustEqual(0, list.subList(size, size + 1).indexOf(one)); |
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mustEqual(-1, list.subList(size + 1, size + 1).indexOf(one)); |
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} |
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|
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/** |
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* indexOf(E, int) returns the index of the first occurrence of the |
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* specified element in this list, searching forwards from index, |
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* or returns -1 if the element is not found |
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*/ |
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public void testIndexOf2() { |
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Vector<Item> list = populatedList(3); |
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int size = list.size(); |
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mustEqual(-1, list.indexOf(minusTen, 0)); |
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|
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// we might expect IOOBE, but spec says otherwise |
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mustEqual(-1, list.indexOf(zero, size)); |
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mustEqual(-1, list.indexOf(zero, Integer.MAX_VALUE)); |
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|
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assertThrows( |
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IndexOutOfBoundsException.class, |
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() -> list.indexOf(zero, -1), |
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() -> list.indexOf(zero, Integer.MIN_VALUE)); |
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|
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for (int i = 0; i < size; i++) { |
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Item I = itemFor(i); |
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mustEqual(i, list.indexOf(I, 0)); |
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mustEqual(i, list.indexOf(I, i)); |
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mustEqual(-1, list.indexOf(I, i + 1)); |
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} |
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|
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list.add(one); |
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mustEqual(1, list.indexOf(one, 0)); |
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mustEqual(1, list.indexOf(one, 1)); |
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mustEqual(size, list.indexOf(one, 2)); |
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mustEqual(size, list.indexOf(one, size)); |
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} |
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|
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/** |
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* isEmpty returns true when empty, else false |
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*/ |
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public void testIsEmpty() { |
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List<Item> empty = new Vector<>(); |
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assertTrue(empty.isEmpty()); |
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assertTrue(empty.subList(0, 0).isEmpty()); |
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|
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List<Item> full = populatedList(SIZE); |
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assertFalse(full.isEmpty()); |
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assertTrue(full.subList(0, 0).isEmpty()); |
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assertTrue(full.subList(SIZE, SIZE).isEmpty()); |
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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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Collection<Item> c = new Vector<>(); |
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assertIteratorExhausted(c.iterator()); |
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} |
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|
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/** |
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* lastIndexOf(Object) returns the index of the last occurrence of |
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* the specified element in this list, or -1 if this list does not |
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* contain the element |
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*/ |
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public void testLastIndexOf1() { |
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List<Item> list = populatedList(3); |
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mustEqual(-1, list.lastIndexOf(minusTen)); |
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int size = list.size(); |
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for (int i = 0; i < size; i++) { |
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Item I = itemFor(i); |
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mustEqual(i, list.lastIndexOf(I)); |
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mustEqual(i, list.subList(0, size).lastIndexOf(I)); |
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mustEqual(i, list.subList(0, i + 1).lastIndexOf(I)); |
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mustEqual(-1, list.subList(0, i).lastIndexOf(I)); |
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mustEqual(0, list.subList(i, size).lastIndexOf(I)); |
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mustEqual(-1, list.subList(i + 1, size).lastIndexOf(I)); |
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} |
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|
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list.add(one); |
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mustEqual(size, list.lastIndexOf(one)); |
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mustEqual(size, list.subList(0, size + 1).lastIndexOf(one)); |
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mustEqual(1, list.subList(0, size).lastIndexOf(one)); |
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mustEqual(0, list.subList(1, 2).lastIndexOf(one)); |
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mustEqual(-1, list.subList(0, 1).indexOf(one)); |
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} |
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|
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/** |
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* lastIndexOf(E, int) returns the index of the last occurrence of the |
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* specified element in this list, searching backwards from index, or |
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* returns -1 if the element is not found |
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*/ |
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public void testLastIndexOf2() { |
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Vector<Item> list = populatedList(3); |
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|
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// we might expect IOOBE, but spec says otherwise |
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mustEqual(-1, list.lastIndexOf(zero, -1)); |
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|
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int size = list.size(); |
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assertThrows( |
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IndexOutOfBoundsException.class, |
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() -> list.lastIndexOf(zero, size), |
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() -> list.lastIndexOf(zero, Integer.MAX_VALUE)); |
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|
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for (int i = 0; i < size; i++) { |
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Item I = itemFor(i); |
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mustEqual(i, list.lastIndexOf(I, i)); |
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mustEqual(list.indexOf(I), list.lastIndexOf(I, i)); |
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if (i > 0) |
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mustEqual(-1, list.lastIndexOf(I, i - 1)); |
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} |
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list.add(one); |
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list.add(three); |
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mustEqual(1, list.lastIndexOf(one, 1)); |
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mustEqual(1, list.lastIndexOf(one, 2)); |
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mustEqual(3, list.lastIndexOf(one, 3)); |
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mustEqual(3, list.lastIndexOf(one, 4)); |
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mustEqual(-1, list.lastIndexOf(three, 3)); |
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} |
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|
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/** |
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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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List<Item> empty = new Vector<>(); |
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mustEqual(0, empty.size()); |
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mustEqual(0, empty.subList(0, 0).size()); |
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|
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List<Item> full = populatedList(SIZE); |
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mustEqual(SIZE, full.size()); |
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mustEqual(0, full.subList(0, 0).size()); |
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mustEqual(0, full.subList(SIZE, SIZE).size()); |
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} |
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|
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/** |
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* sublists contains elements at indexes offset from their base |
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*/ |
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public void testSubList() { |
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List<Item> a = populatedList(10); |
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assertTrue(a.subList(1,1).isEmpty()); |
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for (int j = 0; j < 9; ++j) { |
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for (int i = j ; i < 10; ++i) { |
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List<Item> b = a.subList(j,i); |
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for (int k = j; k < i; ++k) { |
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mustEqual(k, b.get(k-j)); |
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} |
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} |
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} |
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|
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List<Item> s = a.subList(2, 5); |
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mustEqual(3, s.size()); |
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s.set(2, minusOne); |
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mustEqual(a.get(4), minusOne); |
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s.clear(); |
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mustEqual(7, a.size()); |
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|
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assertThrows( |
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IndexOutOfBoundsException.class, |
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() -> s.get(0), |
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() -> s.set(0, fortytwo)); |
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} |
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|
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/** |
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* toArray throws an ArrayStoreException when the given array |
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* can not store the objects inside the list |
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*/ |
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@SuppressWarnings("CollectionToArraySafeParameter") |
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public void testToArray_ArrayStoreException() { |
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List<Item> list = new Vector<>(); |
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// Items are not auto-converted to Longs |
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list.add(eightysix); |
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list.add(ninetynine); |
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assertThrows( |
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ArrayStoreException.class, |
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() -> list.toArray(new Long[0]), |
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() -> list.toArray(new Long[5])); |
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} |
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|
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@SuppressWarnings("unchecked") |
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void testIndexOutOfBoundsException(List list) { |
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int size = list.size(); |
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assertThrows( |
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IndexOutOfBoundsException.class, |
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() -> list.get(-1), |
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() -> list.get(size), |
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() -> list.set(-1, "qwerty"), |
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() -> list.set(size, "qwerty"), |
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() -> list.add(-1, "qwerty"), |
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() -> list.add(size + 1, "qwerty"), |
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() -> list.remove(-1), |
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() -> list.remove(size), |
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() -> list.addAll(-1, Collections.emptyList()), |
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() -> list.addAll(size + 1, Collections.emptyList()), |
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() -> list.listIterator(-1), |
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() -> list.listIterator(size + 1), |
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() -> list.subList(-1, size), |
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() -> list.subList(0, size + 1)); |
| 385 |
|
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// Conversely, operations that must not throw |
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list.addAll(0, Collections.emptyList()); |
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list.addAll(size, Collections.emptyList()); |
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list.add(0, "qwerty"); |
| 390 |
list.add(list.size(), "qwerty"); |
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list.get(0); |
| 392 |
list.get(list.size() - 1); |
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list.set(0, "azerty"); |
| 394 |
list.set(list.size() - 1, "azerty"); |
| 395 |
list.listIterator(0); |
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list.listIterator(list.size()); |
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list.subList(0, list.size()); |
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list.remove(list.size() - 1); |
| 399 |
} |
| 400 |
|
| 401 |
/** |
| 402 |
* IndexOutOfBoundsException is thrown when specified |
| 403 |
*/ |
| 404 |
public void testIndexOutOfBoundsException() { |
| 405 |
ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
| 406 |
List<Item> x = populatedList(rnd.nextInt(5)); |
| 407 |
testIndexOutOfBoundsException(x); |
| 408 |
|
| 409 |
int start = rnd.nextInt(x.size() + 1); |
| 410 |
int end = rnd.nextInt(start, x.size() + 1); |
| 411 |
|
| 412 |
// Vector#subList spec deviates slightly from List#subList spec |
| 413 |
assertThrows( |
| 414 |
IllegalArgumentException.class, |
| 415 |
() -> x.subList(start, start - 1)); |
| 416 |
|
| 417 |
List<Item> subList = x.subList(start, end); |
| 418 |
testIndexOutOfBoundsException(x); |
| 419 |
} |
| 420 |
|
| 421 |
/** |
| 422 |
* a deserialized/reserialized list equals original |
| 423 |
*/ |
| 424 |
public void testSerialization() throws Exception { |
| 425 |
List<Item> x = populatedList(SIZE); |
| 426 |
List<Item> y = serialClone(x); |
| 427 |
|
| 428 |
assertNotSame(x, y); |
| 429 |
mustEqual(x.size(), y.size()); |
| 430 |
mustEqual(x.toString(), y.toString()); |
| 431 |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
| 432 |
mustEqual(x, y); |
| 433 |
mustEqual(y, x); |
| 434 |
while (!x.isEmpty()) { |
| 435 |
assertFalse(y.isEmpty()); |
| 436 |
mustEqual(x.remove(0), y.remove(0)); |
| 437 |
} |
| 438 |
assertTrue(y.isEmpty()); |
| 439 |
} |
| 440 |
|
| 441 |
/** |
| 442 |
* tests for setSize() |
| 443 |
*/ |
| 444 |
public void testSetSize() { |
| 445 |
final Vector<Item> v = new Vector<>(); |
| 446 |
for (int n : new int[] { 100, 5, 50 }) { |
| 447 |
v.setSize(n); |
| 448 |
mustEqual(n, v.size()); |
| 449 |
assertNull(v.get(0)); |
| 450 |
assertNull(v.get(n - 1)); |
| 451 |
assertThrows(ArrayIndexOutOfBoundsException.class, |
| 452 |
() -> v.setSize(-1)); |
| 453 |
mustEqual(n, v.size()); |
| 454 |
assertNull(v.get(0)); |
| 455 |
assertNull(v.get(n - 1)); |
| 456 |
} |
| 457 |
} |
| 458 |
|
| 459 |
} |
