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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/publicdomain/zero/1.0/ |
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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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|
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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.util.Arrays; |
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> |
import java.util.Collection; |
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> |
import java.util.Iterator; |
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> |
import java.util.LinkedList; |
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> |
import java.util.NoSuchElementException; |
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> |
|
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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 LinkedListTest 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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|
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public static Test suite() { |
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return new TestSuite(LinkedListTest.class); |
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class Implementation implements CollectionImplementation { |
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> |
public Class<?> klazz() { return LinkedList.class; } |
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public Collection emptyCollection() { return new LinkedList(); } |
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public Object makeElement(int i) { return 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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public Collection emptyCollection() { |
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return new LinkedList().subList(0, 0); |
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} |
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> |
} |
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return newTestSuite( |
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LinkedListTest.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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/** |
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* Create a queue of given size containing consecutive |
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* Integers 0 ... n. |
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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n - 1. |
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*/ |
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private LinkedList populatedQueue(int n) { |
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LinkedList q = new LinkedList(); |
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private LinkedList<Integer> populatedQueue(int n) { |
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LinkedList<Integer> q = new LinkedList<>(); |
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assertTrue(q.isEmpty()); |
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for(int i = 0; i < n; ++i) |
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assertTrue(q.offer(new Integer(i))); |
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for (int i = 0; i < n; ++i) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(n, q.size()); |
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assertEquals(n, q.size()); |
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assertEquals((Integer) 0, q.peekFirst()); |
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assertEquals((Integer) (n - 1), q.peekLast()); |
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return q; |
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} |
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|
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> |
|
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/** |
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* |
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* new queue is empty |
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*/ |
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public void testConstructor1() { |
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assertEquals(0, new LinkedList().size()); |
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} |
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|
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/** |
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* |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
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try { |
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LinkedList q = new LinkedList((Collection)null); |
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new LinkedList((Collection)null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* Queue contains all elements of collection used to initialize |
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*/ |
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public void testConstructor6() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
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LinkedList q = new LinkedList(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = i; |
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LinkedList q = new LinkedList(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.poll()); |
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} |
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|
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/** |
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* |
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* isEmpty is true before add, false after |
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*/ |
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public void testEmpty() { |
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LinkedList q = new LinkedList(); |
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} |
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/** |
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* |
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* size changes when elements added and removed |
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*/ |
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public void testSize() { |
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LinkedList q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
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assertEquals(SIZE - i, q.size()); |
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q.remove(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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} |
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|
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/** |
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* |
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> |
* offer(null) succeeds |
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*/ |
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public void testOfferNull() { |
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try { |
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LinkedList q = new LinkedList(); |
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q.offer(null); |
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} catch (NullPointerException ie) { |
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unexpectedException(); |
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} |
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LinkedList q = new LinkedList(); |
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q.offer(null); |
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assertNull(q.get(0)); |
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assertTrue(q.contains(null)); |
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} |
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|
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/** |
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< |
* |
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> |
* Offer succeeds |
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*/ |
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public void testOffer() { |
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LinkedList q = new LinkedList(); |
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} |
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|
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/** |
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< |
* |
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> |
* add succeeds |
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*/ |
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public void testAdd() { |
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LinkedList q = new LinkedList(); |
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} |
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|
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/** |
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* |
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> |
* addAll(null) throws NPE |
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*/ |
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public void testAddAll1() { |
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+ |
LinkedList q = new LinkedList(); |
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try { |
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LinkedList q = new LinkedList(); |
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q.addAll(null); |
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shouldThrow(); |
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< |
} |
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< |
catch (NullPointerException success) {} |
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> |
} catch (NullPointerException success) {} |
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} |
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|
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/** |
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< |
* |
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> |
* Queue contains all elements, in traversal order, of successful addAll |
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*/ |
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public void testAddAll5() { |
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+ |
Integer[] empty = new Integer[0]; |
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+ |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = i; |
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LinkedList q = new LinkedList(); |
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assertFalse(q.addAll(Arrays.asList(empty))); |
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+ |
assertTrue(q.addAll(Arrays.asList(ints))); |
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+ |
for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.poll()); |
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+ |
} |
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+ |
|
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+ |
/** |
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+ |
* addAll with too large an index throws IOOBE |
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+ |
*/ |
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+ |
public void testAddAll2_IndexOutOfBoundsException() { |
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+ |
LinkedList l = new LinkedList(); |
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+ |
l.add(new Object()); |
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+ |
LinkedList m = new LinkedList(); |
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+ |
m.add(new Object()); |
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try { |
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< |
Integer[] empty = new Integer[0]; |
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< |
Integer[] ints = new Integer[SIZE]; |
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< |
for (int i = 0; i < SIZE; ++i) |
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< |
ints[i] = new Integer(i); |
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< |
LinkedList q = new LinkedList(); |
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< |
assertFalse(q.addAll(Arrays.asList(empty))); |
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< |
assertTrue(q.addAll(Arrays.asList(ints))); |
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< |
for (int i = 0; i < SIZE; ++i) |
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< |
assertEquals(ints[i], q.poll()); |
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< |
} |
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< |
finally {} |
| 181 |
> |
l.addAll(4,m); |
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> |
shouldThrow(); |
| 183 |
> |
} catch (IndexOutOfBoundsException success) {} |
| 184 |
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} |
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|
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/** |
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< |
* |
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> |
* addAll with negative index throws IOOBE |
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> |
*/ |
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> |
public void testAddAll4_BadIndex() { |
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> |
LinkedList l = new LinkedList(); |
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> |
l.add(new Object()); |
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> |
LinkedList m = new LinkedList(); |
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> |
m.add(new Object()); |
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> |
try { |
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> |
l.addAll(-1,m); |
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> |
shouldThrow(); |
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> |
} catch (IndexOutOfBoundsException success) {} |
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> |
} |
| 199 |
> |
|
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> |
/** |
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> |
* poll succeeds unless empty |
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|
*/ |
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public void testPoll() { |
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LinkedList q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
| 206 |
> |
assertEquals(i, q.poll()); |
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} |
| 208 |
< |
assertNull(q.poll()); |
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> |
assertNull(q.poll()); |
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|
} |
| 210 |
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|
| 211 |
|
/** |
| 212 |
< |
* |
| 212 |
> |
* peek returns next element, or null if empty |
| 213 |
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*/ |
| 214 |
|
public void testPeek() { |
| 215 |
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LinkedList q = populatedQueue(SIZE); |
| 216 |
|
for (int i = 0; i < SIZE; ++i) { |
| 217 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
| 218 |
< |
q.poll(); |
| 217 |
> |
assertEquals(i, q.peek()); |
| 218 |
> |
assertEquals(i, q.poll()); |
| 219 |
|
assertTrue(q.peek() == null || |
| 220 |
< |
i != ((Integer)q.peek()).intValue()); |
| 220 |
> |
!q.peek().equals(i)); |
| 221 |
|
} |
| 222 |
< |
assertNull(q.peek()); |
| 222 |
> |
assertNull(q.peek()); |
| 223 |
|
} |
| 224 |
|
|
| 225 |
|
/** |
| 226 |
< |
* |
| 226 |
> |
* element returns next element, or throws NSEE if empty |
| 227 |
|
*/ |
| 228 |
|
public void testElement() { |
| 229 |
|
LinkedList q = populatedQueue(SIZE); |
| 230 |
|
for (int i = 0; i < SIZE; ++i) { |
| 231 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
| 232 |
< |
q.poll(); |
| 231 |
> |
assertEquals(i, q.element()); |
| 232 |
> |
assertEquals(i, q.poll()); |
| 233 |
|
} |
| 234 |
|
try { |
| 235 |
|
q.element(); |
| 236 |
|
shouldThrow(); |
| 237 |
< |
} |
| 197 |
< |
catch (NoSuchElementException success) {} |
| 237 |
> |
} catch (NoSuchElementException success) {} |
| 238 |
|
} |
| 239 |
|
|
| 240 |
|
/** |
| 241 |
< |
* |
| 241 |
> |
* remove removes next element, or throws NSEE if empty |
| 242 |
|
*/ |
| 243 |
|
public void testRemove() { |
| 244 |
|
LinkedList q = populatedQueue(SIZE); |
| 245 |
|
for (int i = 0; i < SIZE; ++i) { |
| 246 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
| 246 |
> |
assertEquals(i, q.remove()); |
| 247 |
|
} |
| 248 |
|
try { |
| 249 |
|
q.remove(); |
| 250 |
|
shouldThrow(); |
| 251 |
< |
} catch (NoSuchElementException success){ |
| 212 |
< |
} |
| 251 |
> |
} catch (NoSuchElementException success) {} |
| 252 |
|
} |
| 253 |
|
|
| 254 |
|
/** |
| 255 |
< |
* |
| 255 |
> |
* remove(x) removes x and returns true if present |
| 256 |
|
*/ |
| 257 |
|
public void testRemoveElement() { |
| 258 |
|
LinkedList q = populatedQueue(SIZE); |
| 259 |
< |
for (int i = 1; i < SIZE; i+=2) { |
| 260 |
< |
assertTrue(q.remove(new Integer(i))); |
| 261 |
< |
} |
| 262 |
< |
for (int i = 0; i < SIZE; i+=2) { |
| 263 |
< |
assertTrue(q.remove(new Integer(i))); |
| 264 |
< |
assertFalse(q.remove(new Integer(i+1))); |
| 259 |
> |
for (int i = 1; i < SIZE; i += 2) { |
| 260 |
> |
assertTrue(q.contains(i)); |
| 261 |
> |
assertTrue(q.remove((Integer)i)); |
| 262 |
> |
assertFalse(q.contains(i)); |
| 263 |
> |
assertTrue(q.contains(i - 1)); |
| 264 |
> |
} |
| 265 |
> |
for (int i = 0; i < SIZE; i += 2) { |
| 266 |
> |
assertTrue(q.contains(i)); |
| 267 |
> |
assertTrue(q.remove((Integer)i)); |
| 268 |
> |
assertFalse(q.contains(i)); |
| 269 |
> |
assertFalse(q.remove((Integer)(i + 1))); |
| 270 |
> |
assertFalse(q.contains(i + 1)); |
| 271 |
|
} |
| 272 |
|
assertTrue(q.isEmpty()); |
| 273 |
|
} |
| 274 |
< |
|
| 274 |
> |
|
| 275 |
|
/** |
| 276 |
< |
* |
| 276 |
> |
* contains(x) reports true when elements added but not yet removed |
| 277 |
|
*/ |
| 278 |
|
public void testContains() { |
| 279 |
|
LinkedList q = populatedQueue(SIZE); |
| 285 |
|
} |
| 286 |
|
|
| 287 |
|
/** |
| 288 |
< |
* |
| 288 |
> |
* clear removes all elements |
| 289 |
|
*/ |
| 290 |
|
public void testClear() { |
| 291 |
|
LinkedList q = populatedQueue(SIZE); |
| 292 |
|
q.clear(); |
| 293 |
|
assertTrue(q.isEmpty()); |
| 294 |
|
assertEquals(0, q.size()); |
| 295 |
< |
q.add(new Integer(1)); |
| 295 |
> |
assertTrue(q.add(new Integer(1))); |
| 296 |
|
assertFalse(q.isEmpty()); |
| 297 |
|
q.clear(); |
| 298 |
|
assertTrue(q.isEmpty()); |
| 299 |
|
} |
| 300 |
|
|
| 301 |
|
/** |
| 302 |
< |
* |
| 302 |
> |
* containsAll(c) is true when c contains a subset of elements |
| 303 |
|
*/ |
| 304 |
|
public void testContainsAll() { |
| 305 |
|
LinkedList q = populatedQueue(SIZE); |
| 307 |
|
for (int i = 0; i < SIZE; ++i) { |
| 308 |
|
assertTrue(q.containsAll(p)); |
| 309 |
|
assertFalse(p.containsAll(q)); |
| 310 |
< |
p.add(new Integer(i)); |
| 310 |
> |
assertTrue(p.add(new Integer(i))); |
| 311 |
|
} |
| 312 |
|
assertTrue(p.containsAll(q)); |
| 313 |
|
} |
| 314 |
|
|
| 315 |
|
/** |
| 316 |
< |
* |
| 316 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
| 317 |
|
*/ |
| 318 |
|
public void testRetainAll() { |
| 319 |
|
LinkedList q = populatedQueue(SIZE); |
| 326 |
|
assertTrue(changed); |
| 327 |
|
|
| 328 |
|
assertTrue(q.containsAll(p)); |
| 329 |
< |
assertEquals(SIZE-i, q.size()); |
| 329 |
> |
assertEquals(SIZE - i, q.size()); |
| 330 |
|
p.remove(); |
| 331 |
|
} |
| 332 |
|
} |
| 333 |
|
|
| 334 |
|
/** |
| 335 |
< |
* |
| 335 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
| 336 |
|
*/ |
| 337 |
|
public void testRemoveAll() { |
| 338 |
|
for (int i = 1; i < SIZE; ++i) { |
| 339 |
|
LinkedList q = populatedQueue(SIZE); |
| 340 |
|
LinkedList p = populatedQueue(i); |
| 341 |
|
assertTrue(q.removeAll(p)); |
| 342 |
< |
assertEquals(SIZE-i, q.size()); |
| 342 |
> |
assertEquals(SIZE - i, q.size()); |
| 343 |
|
for (int j = 0; j < i; ++j) { |
| 344 |
< |
Integer I = (Integer)(p.remove()); |
| 345 |
< |
assertFalse(q.contains(I)); |
| 344 |
> |
Integer x = (Integer)(p.remove()); |
| 345 |
> |
assertFalse(q.contains(x)); |
| 346 |
|
} |
| 347 |
|
} |
| 348 |
|
} |
| 349 |
|
|
| 350 |
|
/** |
| 351 |
< |
* |
| 351 |
> |
* toArray contains all elements in FIFO order |
| 352 |
|
*/ |
| 353 |
|
public void testToArray() { |
| 354 |
|
LinkedList q = populatedQueue(SIZE); |
| 355 |
< |
Object[] o = q.toArray(); |
| 356 |
< |
Arrays.sort(o); |
| 357 |
< |
for(int i = 0; i < o.length; i++) |
| 313 |
< |
assertEquals(o[i], q.poll()); |
| 355 |
> |
Object[] o = q.toArray(); |
| 356 |
> |
for (int i = 0; i < o.length; i++) |
| 357 |
> |
assertSame(o[i], q.poll()); |
| 358 |
|
} |
| 359 |
|
|
| 360 |
|
/** |
| 361 |
< |
* |
| 361 |
> |
* toArray(a) contains all elements in FIFO order |
| 362 |
|
*/ |
| 363 |
|
public void testToArray2() { |
| 364 |
< |
LinkedList q = populatedQueue(SIZE); |
| 365 |
< |
Integer[] ints = new Integer[SIZE]; |
| 366 |
< |
ints = (Integer[])q.toArray(ints); |
| 367 |
< |
Arrays.sort(ints); |
| 368 |
< |
for(int i = 0; i < ints.length; i++) |
| 369 |
< |
assertEquals(ints[i], q.poll()); |
| 364 |
> |
LinkedList<Integer> q = populatedQueue(SIZE); |
| 365 |
> |
Integer[] ints = new Integer[SIZE]; |
| 366 |
> |
Integer[] array = q.toArray(ints); |
| 367 |
> |
assertSame(ints, array); |
| 368 |
> |
for (int i = 0; i < ints.length; i++) |
| 369 |
> |
assertSame(ints[i], q.poll()); |
| 370 |
> |
} |
| 371 |
> |
|
| 372 |
> |
/** |
| 373 |
> |
* toArray(null) throws NullPointerException |
| 374 |
> |
*/ |
| 375 |
> |
public void testToArray_NullArg() { |
| 376 |
> |
LinkedList l = new LinkedList(); |
| 377 |
> |
l.add(new Object()); |
| 378 |
> |
try { |
| 379 |
> |
l.toArray(null); |
| 380 |
> |
shouldThrow(); |
| 381 |
> |
} catch (NullPointerException success) {} |
| 382 |
> |
} |
| 383 |
> |
|
| 384 |
> |
/** |
| 385 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
| 386 |
> |
*/ |
| 387 |
> |
public void testToArray1_BadArg() { |
| 388 |
> |
LinkedList l = new LinkedList(); |
| 389 |
> |
l.add(new Integer(5)); |
| 390 |
> |
try { |
| 391 |
> |
l.toArray(new String[10]); |
| 392 |
> |
shouldThrow(); |
| 393 |
> |
} catch (ArrayStoreException success) {} |
| 394 |
|
} |
| 395 |
< |
|
| 395 |
> |
|
| 396 |
|
/** |
| 397 |
< |
* |
| 397 |
> |
* iterator iterates through all elements |
| 398 |
|
*/ |
| 399 |
|
public void testIterator() { |
| 400 |
|
LinkedList q = populatedQueue(SIZE); |
| 401 |
< |
int i = 0; |
| 402 |
< |
Iterator it = q.iterator(); |
| 403 |
< |
while(it.hasNext()) { |
| 401 |
> |
Iterator it = q.iterator(); |
| 402 |
> |
int i; |
| 403 |
> |
for (i = 0; it.hasNext(); i++) |
| 404 |
|
assertTrue(q.contains(it.next())); |
| 337 |
– |
++i; |
| 338 |
– |
} |
| 405 |
|
assertEquals(i, SIZE); |
| 406 |
+ |
assertIteratorExhausted(it); |
| 407 |
|
} |
| 408 |
|
|
| 409 |
|
/** |
| 410 |
< |
* |
| 410 |
> |
* iterator of empty collection has no elements |
| 411 |
|
*/ |
| 412 |
< |
public void testIteratorOrdering() { |
| 412 |
> |
public void testEmptyIterator() { |
| 413 |
> |
assertIteratorExhausted(new LinkedList().iterator()); |
| 414 |
> |
} |
| 415 |
|
|
| 416 |
+ |
/** |
| 417 |
+ |
* iterator ordering is FIFO |
| 418 |
+ |
*/ |
| 419 |
+ |
public void testIteratorOrdering() { |
| 420 |
|
final LinkedList q = new LinkedList(); |
| 348 |
– |
|
| 421 |
|
q.add(new Integer(1)); |
| 422 |
|
q.add(new Integer(2)); |
| 423 |
|
q.add(new Integer(3)); |
| 352 |
– |
|
| 424 |
|
int k = 0; |
| 425 |
|
for (Iterator it = q.iterator(); it.hasNext();) { |
| 426 |
< |
int i = ((Integer)(it.next())).intValue(); |
| 356 |
< |
assertEquals(++k, i); |
| 426 |
> |
assertEquals(++k, it.next()); |
| 427 |
|
} |
| 428 |
|
|
| 429 |
|
assertEquals(3, k); |
| 430 |
|
} |
| 431 |
|
|
| 432 |
|
/** |
| 433 |
< |
* |
| 433 |
> |
* iterator.remove removes current element |
| 434 |
|
*/ |
| 435 |
< |
public void testIteratorRemove () { |
| 435 |
> |
public void testIteratorRemove() { |
| 436 |
|
final LinkedList q = new LinkedList(); |
| 367 |
– |
|
| 437 |
|
q.add(new Integer(1)); |
| 438 |
|
q.add(new Integer(2)); |
| 439 |
|
q.add(new Integer(3)); |
| 371 |
– |
|
| 440 |
|
Iterator it = q.iterator(); |
| 441 |
< |
it.next(); |
| 441 |
> |
assertEquals(1, it.next()); |
| 442 |
|
it.remove(); |
| 375 |
– |
|
| 443 |
|
it = q.iterator(); |
| 444 |
< |
assertEquals(it.next(), new Integer(2)); |
| 445 |
< |
assertEquals(it.next(), new Integer(3)); |
| 444 |
> |
assertEquals(2, it.next()); |
| 445 |
> |
assertEquals(3, it.next()); |
| 446 |
|
assertFalse(it.hasNext()); |
| 447 |
|
} |
| 448 |
|
|
| 382 |
– |
|
| 449 |
|
/** |
| 450 |
< |
* |
| 450 |
> |
* Descending iterator iterates through all elements |
| 451 |
|
*/ |
| 452 |
< |
public void testToString() { |
| 452 |
> |
public void testDescendingIterator() { |
| 453 |
|
LinkedList q = populatedQueue(SIZE); |
| 454 |
< |
String s = q.toString(); |
| 455 |
< |
for (int i = 0; i < SIZE; ++i) { |
| 456 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
| 454 |
> |
int i = 0; |
| 455 |
> |
Iterator it = q.descendingIterator(); |
| 456 |
> |
while (it.hasNext()) { |
| 457 |
> |
assertTrue(q.contains(it.next())); |
| 458 |
> |
++i; |
| 459 |
|
} |
| 460 |
< |
} |
| 461 |
< |
|
| 462 |
< |
/** |
| 463 |
< |
* |
| 464 |
< |
*/ |
| 465 |
< |
public void testAddFirst() { |
| 398 |
< |
LinkedList q = populatedQueue(3); |
| 399 |
< |
q.addFirst(new Integer(4)); |
| 400 |
< |
assertEquals(new Integer(4),q.get(0)); |
| 401 |
< |
} |
| 402 |
< |
|
| 403 |
< |
/** |
| 404 |
< |
* |
| 405 |
< |
*/ |
| 406 |
< |
public void testAddLast() { |
| 407 |
< |
LinkedList q = populatedQueue(3); |
| 408 |
< |
q.addLast(new Integer(3)); |
| 409 |
< |
assertEquals(new Integer(3),q.get(3)); |
| 410 |
< |
} |
| 411 |
< |
|
| 412 |
< |
/** |
| 413 |
< |
* |
| 414 |
< |
*/ |
| 415 |
< |
public void testGetFirst() { |
| 416 |
< |
LinkedList q = populatedQueue(3); |
| 417 |
< |
assertEquals(new Integer(0),q.getFirst()); |
| 418 |
< |
} |
| 419 |
< |
|
| 420 |
< |
/** |
| 421 |
< |
* |
| 422 |
< |
*/ |
| 423 |
< |
public void testGetLast() { |
| 424 |
< |
LinkedList q = populatedQueue(3); |
| 425 |
< |
assertEquals(new Integer(2),q.getLast()); |
| 426 |
< |
} |
| 427 |
< |
|
| 428 |
< |
/** |
| 429 |
< |
* |
| 430 |
< |
*/ |
| 431 |
< |
public void testIndexOf() { |
| 432 |
< |
LinkedList q = populatedQueue(3); |
| 433 |
< |
assertEquals(0,q.indexOf(new Integer(0))); |
| 434 |
< |
assertEquals(1,q.indexOf(new Integer(1))); |
| 435 |
< |
assertEquals(2,q.indexOf(new Integer(2))); |
| 436 |
< |
assertEquals(-1, q.indexOf("not there")); |
| 460 |
> |
assertEquals(i, SIZE); |
| 461 |
> |
assertFalse(it.hasNext()); |
| 462 |
> |
try { |
| 463 |
> |
it.next(); |
| 464 |
> |
shouldThrow(); |
| 465 |
> |
} catch (NoSuchElementException success) {} |
| 466 |
|
} |
| 467 |
|
|
| 468 |
|
/** |
| 469 |
< |
* |
| 469 |
> |
* Descending iterator ordering is reverse FIFO |
| 470 |
|
*/ |
| 471 |
< |
public void testLastIndexOf() { |
| 472 |
< |
LinkedList q = populatedQueue(3); |
| 471 |
> |
public void testDescendingIteratorOrdering() { |
| 472 |
> |
final LinkedList q = new LinkedList(); |
| 473 |
> |
q.add(new Integer(3)); |
| 474 |
|
q.add(new Integer(2)); |
| 475 |
< |
assertEquals(3,q.lastIndexOf(new Integer(2))); |
| 476 |
< |
assertEquals(-1, q.lastIndexOf("not there")); |
| 477 |
< |
} |
| 478 |
< |
|
| 479 |
< |
/** |
| 450 |
< |
* |
| 451 |
< |
*/ |
| 452 |
< |
public void testSet() { |
| 453 |
< |
LinkedList q = populatedQueue(3); |
| 454 |
< |
q.set(0,(new Integer(1))); |
| 455 |
< |
assertFalse(q.contains(new Integer(0))); |
| 456 |
< |
assertEquals(new Integer(1), q.get(0)); |
| 457 |
< |
} |
| 458 |
< |
|
| 475 |
> |
q.add(new Integer(1)); |
| 476 |
> |
int k = 0; |
| 477 |
> |
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
| 478 |
> |
assertEquals(++k, it.next()); |
| 479 |
> |
} |
| 480 |
|
|
| 481 |
< |
/** |
| 461 |
< |
* |
| 462 |
< |
*/ |
| 463 |
< |
public void testGetFirst_NoSuchElementException() { |
| 464 |
< |
try { |
| 465 |
< |
LinkedList l = new LinkedList(); |
| 466 |
< |
l.getFirst(); |
| 467 |
< |
shouldThrow(); |
| 468 |
< |
} |
| 469 |
< |
catch(NoSuchElementException success) {} |
| 470 |
< |
} |
| 471 |
< |
|
| 472 |
< |
/** |
| 473 |
< |
* |
| 474 |
< |
*/ |
| 475 |
< |
public void testRemoveFirst() { |
| 476 |
< |
try { |
| 477 |
< |
LinkedList l = new LinkedList(); |
| 478 |
< |
l.removeFirst(); |
| 479 |
< |
shouldThrow(); |
| 480 |
< |
} |
| 481 |
< |
catch(NoSuchElementException success) {} |
| 482 |
< |
} |
| 483 |
< |
|
| 484 |
< |
/** |
| 485 |
< |
* |
| 486 |
< |
*/ |
| 487 |
< |
public void testRemoveLast() { |
| 488 |
< |
try { |
| 489 |
< |
LinkedList l = new LinkedList(); |
| 490 |
< |
l.removeLast(); |
| 491 |
< |
shouldThrow(); |
| 492 |
< |
} |
| 493 |
< |
catch(NoSuchElementException success) {} |
| 494 |
< |
} |
| 495 |
< |
|
| 496 |
< |
/** |
| 497 |
< |
* |
| 498 |
< |
*/ |
| 499 |
< |
public void testGetLast_NoSuchElementException() { |
| 500 |
< |
try { |
| 501 |
< |
LinkedList l = new LinkedList(); |
| 502 |
< |
l.getLast(); |
| 503 |
< |
shouldThrow(); |
| 504 |
< |
} |
| 505 |
< |
catch(NoSuchElementException success) {} |
| 481 |
> |
assertEquals(3, k); |
| 482 |
|
} |
| 483 |
|
|
| 508 |
– |
|
| 484 |
|
/** |
| 485 |
< |
* |
| 485 |
> |
* descendingIterator.remove removes current element |
| 486 |
|
*/ |
| 487 |
< |
public void testAddAll_NullPointerException() { |
| 488 |
< |
try { |
| 489 |
< |
LinkedList l = new LinkedList(); |
| 490 |
< |
l.addAll((Collection)null); |
| 491 |
< |
shouldThrow(); |
| 492 |
< |
} |
| 493 |
< |
catch(NullPointerException success){} |
| 494 |
< |
} |
| 495 |
< |
|
| 496 |
< |
|
| 497 |
< |
/** |
| 498 |
< |
* |
| 524 |
< |
*/ |
| 525 |
< |
public void testAddAll1_OutOfBounds() { |
| 526 |
< |
try { |
| 527 |
< |
LinkedList l = new LinkedList(); |
| 528 |
< |
l.addAll(4,new LinkedList()); |
| 529 |
< |
shouldThrow(); |
| 530 |
< |
} |
| 531 |
< |
catch(IndexOutOfBoundsException success) {} |
| 487 |
> |
public void testDescendingIteratorRemove() { |
| 488 |
> |
final LinkedList q = new LinkedList(); |
| 489 |
> |
q.add(three); |
| 490 |
> |
q.add(two); |
| 491 |
> |
q.add(one); |
| 492 |
> |
Iterator it = q.descendingIterator(); |
| 493 |
> |
it.next(); |
| 494 |
> |
it.remove(); |
| 495 |
> |
it = q.descendingIterator(); |
| 496 |
> |
assertSame(it.next(), two); |
| 497 |
> |
assertSame(it.next(), three); |
| 498 |
> |
assertFalse(it.hasNext()); |
| 499 |
|
} |
| 500 |
< |
|
| 534 |
< |
|
| 500 |
> |
|
| 501 |
|
/** |
| 502 |
< |
* |
| 502 |
> |
* toString contains toStrings of elements |
| 503 |
|
*/ |
| 504 |
< |
public void testAddAll2_IndexOutOfBoundsException() { |
| 505 |
< |
try { |
| 506 |
< |
LinkedList l = new LinkedList(); |
| 507 |
< |
l.add(new Object()); |
| 508 |
< |
LinkedList m = new LinkedList(); |
| 509 |
< |
m.add(new Object()); |
| 544 |
< |
l.addAll(4,m); |
| 545 |
< |
shouldThrow(); |
| 546 |
< |
} catch(IndexOutOfBoundsException success) {} |
| 504 |
> |
public void testToString() { |
| 505 |
> |
LinkedList q = populatedQueue(SIZE); |
| 506 |
> |
String s = q.toString(); |
| 507 |
> |
for (int i = 0; i < SIZE; ++i) { |
| 508 |
> |
assertTrue(s.contains(String.valueOf(i))); |
| 509 |
> |
} |
| 510 |
|
} |
| 511 |
|
|
| 512 |
|
/** |
| 513 |
< |
* |
| 513 |
> |
* peek returns element inserted with addFirst |
| 514 |
|
*/ |
| 515 |
< |
public void testAddAll4_BadIndex() { |
| 516 |
< |
try { |
| 517 |
< |
LinkedList l = new LinkedList(); |
| 518 |
< |
l.add(new Object()); |
| 556 |
< |
LinkedList m = new LinkedList(); |
| 557 |
< |
m.add(new Object()); |
| 558 |
< |
l.addAll(-1,m); |
| 559 |
< |
shouldThrow(); |
| 560 |
< |
} catch(IndexOutOfBoundsException success){} |
| 515 |
> |
public void testAddFirst() { |
| 516 |
> |
LinkedList q = populatedQueue(3); |
| 517 |
> |
q.addFirst(four); |
| 518 |
> |
assertSame(four, q.peek()); |
| 519 |
|
} |
| 520 |
|
|
| 521 |
|
/** |
| 522 |
< |
* |
| 522 |
> |
* peekFirst returns element inserted with push |
| 523 |
|
*/ |
| 524 |
< |
public void testget1() { |
| 525 |
< |
try { |
| 526 |
< |
LinkedList l = new LinkedList(); |
| 527 |
< |
l.add(new Object()); |
| 570 |
< |
l.get(-1); |
| 571 |
< |
shouldThrow(); |
| 572 |
< |
} catch(IndexOutOfBoundsException success) {} |
| 524 |
> |
public void testPush() { |
| 525 |
> |
LinkedList q = populatedQueue(3); |
| 526 |
> |
q.push(four); |
| 527 |
> |
assertSame(four, q.peekFirst()); |
| 528 |
|
} |
| 529 |
|
|
| 530 |
|
/** |
| 531 |
< |
* |
| 531 |
> |
* pop removes next element, or throws NSEE if empty |
| 532 |
|
*/ |
| 533 |
< |
public void testget2() { |
| 534 |
< |
try { |
| 535 |
< |
LinkedList l = new LinkedList(); |
| 536 |
< |
l.add(new Object()); |
| 537 |
< |
l.get(5); |
| 538 |
< |
shouldThrow(); |
| 539 |
< |
} catch(IndexOutOfBoundsException success){} |
| 533 |
> |
public void testPop() { |
| 534 |
> |
LinkedList q = populatedQueue(SIZE); |
| 535 |
> |
for (int i = 0; i < SIZE; ++i) { |
| 536 |
> |
assertEquals(i, q.pop()); |
| 537 |
> |
} |
| 538 |
> |
try { |
| 539 |
> |
q.pop(); |
| 540 |
> |
shouldThrow(); |
| 541 |
> |
} catch (NoSuchElementException success) {} |
| 542 |
|
} |
| 543 |
|
|
| 544 |
|
/** |
| 545 |
< |
* |
| 545 |
> |
* OfferFirst succeeds |
| 546 |
|
*/ |
| 547 |
< |
public void testset1() { |
| 548 |
< |
try { |
| 549 |
< |
LinkedList l = new LinkedList(); |
| 550 |
< |
l.add(new Object()); |
| 594 |
< |
l.set(-1,new Object()); |
| 595 |
< |
shouldThrow(); |
| 596 |
< |
} catch(IndexOutOfBoundsException success){} |
| 547 |
> |
public void testOfferFirst() { |
| 548 |
> |
LinkedList q = new LinkedList(); |
| 549 |
> |
assertTrue(q.offerFirst(new Integer(0))); |
| 550 |
> |
assertTrue(q.offerFirst(new Integer(1))); |
| 551 |
|
} |
| 552 |
|
|
| 553 |
|
/** |
| 554 |
< |
* |
| 554 |
> |
* OfferLast succeeds |
| 555 |
|
*/ |
| 556 |
< |
public void testset2() { |
| 557 |
< |
try { |
| 558 |
< |
LinkedList l = new LinkedList(); |
| 559 |
< |
l.add(new Object()); |
| 606 |
< |
l.set(5,new Object()); |
| 607 |
< |
shouldThrow(); |
| 608 |
< |
} catch(IndexOutOfBoundsException success){} |
| 556 |
> |
public void testOfferLast() { |
| 557 |
> |
LinkedList q = new LinkedList(); |
| 558 |
> |
assertTrue(q.offerLast(new Integer(0))); |
| 559 |
> |
assertTrue(q.offerLast(new Integer(1))); |
| 560 |
|
} |
| 561 |
|
|
| 562 |
|
/** |
| 563 |
< |
* |
| 563 |
> |
* pollLast succeeds unless empty |
| 564 |
|
*/ |
| 565 |
< |
public void testadd1() { |
| 566 |
< |
try { |
| 567 |
< |
LinkedList l = new LinkedList(); |
| 568 |
< |
l.add(new Object()); |
| 569 |
< |
l.add(-1,new Object()); |
| 570 |
< |
shouldThrow(); |
| 620 |
< |
} catch(IndexOutOfBoundsException success){} |
| 621 |
< |
} |
| 622 |
< |
|
| 623 |
< |
public void add2() { |
| 624 |
< |
try { |
| 625 |
< |
LinkedList l = new LinkedList(); |
| 626 |
< |
l.add(new Object()); |
| 627 |
< |
l.add(5,new Object()); |
| 628 |
< |
shouldThrow(); |
| 629 |
< |
} catch(IndexOutOfBoundsException success) {} |
| 565 |
> |
public void testPollLast() { |
| 566 |
> |
LinkedList q = populatedQueue(SIZE); |
| 567 |
> |
for (int i = SIZE - 1; i >= 0; --i) { |
| 568 |
> |
assertEquals(i, q.pollLast()); |
| 569 |
> |
} |
| 570 |
> |
assertNull(q.pollLast()); |
| 571 |
|
} |
| 572 |
|
|
| 573 |
|
/** |
| 574 |
< |
* |
| 574 |
> |
* peekFirst returns next element, or null if empty |
| 575 |
|
*/ |
| 576 |
< |
public void testremove() { |
| 577 |
< |
try { |
| 578 |
< |
LinkedList l = new LinkedList(); |
| 579 |
< |
l.add(new Object()); |
| 580 |
< |
l.remove(-1); |
| 581 |
< |
shouldThrow(); |
| 582 |
< |
} catch(IndexOutOfBoundsException success){} |
| 576 |
> |
public void testPeekFirst() { |
| 577 |
> |
LinkedList q = populatedQueue(SIZE); |
| 578 |
> |
for (int i = 0; i < SIZE; ++i) { |
| 579 |
> |
assertEquals(i, q.peekFirst()); |
| 580 |
> |
assertEquals(i, q.pollFirst()); |
| 581 |
> |
assertTrue(q.peekFirst() == null || |
| 582 |
> |
!q.peekFirst().equals(i)); |
| 583 |
> |
} |
| 584 |
> |
assertNull(q.peekFirst()); |
| 585 |
|
} |
| 586 |
< |
|
| 586 |
> |
|
| 587 |
|
/** |
| 588 |
< |
* |
| 588 |
> |
* peekLast returns next element, or null if empty |
| 589 |
|
*/ |
| 590 |
< |
public void testremove1() { |
| 591 |
< |
try { |
| 592 |
< |
LinkedList l = new LinkedList(); |
| 593 |
< |
l.add(new Object()); |
| 594 |
< |
l.remove(5); |
| 595 |
< |
shouldThrow(); |
| 596 |
< |
} catch(IndexOutOfBoundsException success){} |
| 590 |
> |
public void testPeekLast() { |
| 591 |
> |
LinkedList q = populatedQueue(SIZE); |
| 592 |
> |
for (int i = SIZE - 1; i >= 0; --i) { |
| 593 |
> |
assertEquals(i, q.peekLast()); |
| 594 |
> |
assertEquals(i, q.pollLast()); |
| 595 |
> |
assertTrue(q.peekLast() == null || |
| 596 |
> |
!q.peekLast().equals(i)); |
| 597 |
> |
} |
| 598 |
> |
assertNull(q.peekLast()); |
| 599 |
|
} |
| 600 |
|
|
| 601 |
< |
|
| 602 |
< |
/** |
| 603 |
< |
* |
| 604 |
< |
*/ |
| 605 |
< |
public void testremove2() { |
| 601 |
> |
public void testFirstElement() { |
| 602 |
> |
LinkedList q = populatedQueue(SIZE); |
| 603 |
> |
for (int i = 0; i < SIZE; ++i) { |
| 604 |
> |
assertEquals(i, q.getFirst()); |
| 605 |
> |
assertEquals(i, q.pollFirst()); |
| 606 |
> |
} |
| 607 |
|
try { |
| 608 |
< |
LinkedList l = new LinkedList(); |
| 663 |
< |
l.remove(); |
| 608 |
> |
q.getFirst(); |
| 609 |
|
shouldThrow(); |
| 610 |
< |
} catch(NoSuchElementException e){} |
| 610 |
> |
} catch (NoSuchElementException success) {} |
| 611 |
|
} |
| 612 |
|
|
| 613 |
|
/** |
| 614 |
< |
* |
| 670 |
< |
*/ |
| 671 |
< |
public void testlistIt1() { |
| 672 |
< |
try { |
| 673 |
< |
LinkedList l = new LinkedList(); |
| 674 |
< |
l.add(new Object()); |
| 675 |
< |
l.listIterator(5); |
| 676 |
< |
shouldThrow(); |
| 677 |
< |
} catch(IndexOutOfBoundsException success){} |
| 678 |
< |
} |
| 679 |
< |
|
| 680 |
< |
/** |
| 681 |
< |
* |
| 614 |
> |
* getLast returns next element, or throws NSEE if empty |
| 615 |
|
*/ |
| 616 |
< |
public void testlistIt2() { |
| 617 |
< |
try { |
| 618 |
< |
LinkedList l = new LinkedList(); |
| 619 |
< |
l.add(new Object()); |
| 620 |
< |
l.listIterator(-1); |
| 621 |
< |
shouldThrow(); |
| 622 |
< |
} catch(IndexOutOfBoundsException success){} |
| 623 |
< |
} |
| 624 |
< |
|
| 625 |
< |
/** |
| 626 |
< |
* |
| 694 |
< |
*/ |
| 695 |
< |
public void testlistIt3() { |
| 696 |
< |
try { |
| 697 |
< |
LinkedList l = new LinkedList(); |
| 698 |
< |
l.add(new Object()); |
| 699 |
< |
ListIterator a = l.listIterator(0); |
| 700 |
< |
l.removeFirst(); |
| 701 |
< |
a.next(); |
| 702 |
< |
shouldThrow(); |
| 703 |
< |
} catch(ConcurrentModificationException success){} |
| 616 |
> |
public void testLastElement() { |
| 617 |
> |
LinkedList q = populatedQueue(SIZE); |
| 618 |
> |
for (int i = SIZE - 1; i >= 0; --i) { |
| 619 |
> |
assertEquals(i, q.getLast()); |
| 620 |
> |
assertEquals(i, q.pollLast()); |
| 621 |
> |
} |
| 622 |
> |
try { |
| 623 |
> |
q.getLast(); |
| 624 |
> |
shouldThrow(); |
| 625 |
> |
} catch (NoSuchElementException success) {} |
| 626 |
> |
assertNull(q.peekLast()); |
| 627 |
|
} |
| 628 |
|
|
| 629 |
|
/** |
| 630 |
< |
* |
| 630 |
> |
* removeFirstOccurrence(x) removes x and returns true if present |
| 631 |
|
*/ |
| 632 |
< |
public void testToArray_BadArg() { |
| 633 |
< |
try { |
| 634 |
< |
LinkedList l = new LinkedList(); |
| 635 |
< |
l.add(new Object()); |
| 636 |
< |
Object o[] = l.toArray(null); |
| 637 |
< |
shouldThrow(); |
| 638 |
< |
} catch(NullPointerException success){} |
| 632 |
> |
public void testRemoveFirstOccurrence() { |
| 633 |
> |
LinkedList q = populatedQueue(SIZE); |
| 634 |
> |
for (int i = 1; i < SIZE; i += 2) { |
| 635 |
> |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
| 636 |
> |
} |
| 637 |
> |
for (int i = 0; i < SIZE; i += 2) { |
| 638 |
> |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
| 639 |
> |
assertFalse(q.removeFirstOccurrence(new Integer(i + 1))); |
| 640 |
> |
} |
| 641 |
> |
assertTrue(q.isEmpty()); |
| 642 |
|
} |
| 643 |
|
|
| 644 |
|
/** |
| 645 |
< |
* |
| 645 |
> |
* removeLastOccurrence(x) removes x and returns true if present |
| 646 |
|
*/ |
| 647 |
< |
public void testToArray1_BadArg() { |
| 648 |
< |
try { |
| 649 |
< |
LinkedList l = new LinkedList(); |
| 650 |
< |
l.add(new Integer(5)); |
| 651 |
< |
Object o[] = l.toArray(new String[10] ); |
| 652 |
< |
shouldThrow(); |
| 653 |
< |
} catch(ArrayStoreException success){} |
| 647 |
> |
public void testRemoveLastOccurrence() { |
| 648 |
> |
LinkedList q = populatedQueue(SIZE); |
| 649 |
> |
for (int i = 1; i < SIZE; i += 2) { |
| 650 |
> |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
| 651 |
> |
} |
| 652 |
> |
for (int i = 0; i < SIZE; i += 2) { |
| 653 |
> |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
| 654 |
> |
assertFalse(q.removeLastOccurrence(new Integer(i + 1))); |
| 655 |
> |
} |
| 656 |
> |
assertTrue(q.isEmpty()); |
| 657 |
|
} |
| 658 |
|
|
| 659 |
|
} |
