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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* 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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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; |
14 |
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|
15 |
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import junit.framework.Test; |
16 |
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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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junit.textui.TestRunner.run(suite()); |
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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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return new TestSuite(LinkedListTest.class); |
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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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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
31 |
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private LinkedList populatedQueue(int n) { |
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LinkedList q = new LinkedList(); |
31 |
> |
private LinkedList<Integer> populatedQueue(int n) { |
32 |
> |
LinkedList<Integer> q = new LinkedList<Integer>(); |
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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) |
35 |
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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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return q; |
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} |
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|
52 |
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try { |
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LinkedList q = 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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* Queue contains all elements of collection used to initialize |
56 |
– |
|
60 |
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*/ |
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public void testConstructor6() { |
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< |
try { |
63 |
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Integer[] ints = new Integer[SIZE]; |
64 |
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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]; |
63 |
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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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* offer(null) succeeds |
101 |
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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); |
106 |
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} catch (NullPointerException ie) { |
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unexpectedException(); |
108 |
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} |
103 |
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LinkedList q = new LinkedList(); |
104 |
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q.offer(null); |
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} |
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|
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/** |
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LinkedList q = new LinkedList(); |
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q.addAll(null); |
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shouldThrow(); |
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} |
140 |
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catch (NullPointerException success) {} |
135 |
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} catch (NullPointerException success) {} |
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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 |
140 |
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*/ |
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public void testAddAll5() { |
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try { |
143 |
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Integer[] empty = new Integer[0]; |
144 |
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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(); |
148 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
149 |
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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 {} |
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Integer[] empty = new Integer[0]; |
143 |
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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(); |
147 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
148 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
149 |
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for (int i = 0; i < SIZE; ++i) |
150 |
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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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try { |
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LinkedList l = new LinkedList(); |
159 |
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l.add(new Object()); |
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LinkedList m = new LinkedList(); |
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m.add(new Object()); |
162 |
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l.addAll(4,m); |
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shouldThrow(); |
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} catch (IndexOutOfBoundsException success) {} |
157 |
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LinkedList l = new LinkedList(); |
158 |
> |
l.add(new Object()); |
159 |
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LinkedList m = new LinkedList(); |
160 |
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m.add(new Object()); |
161 |
> |
try { |
162 |
> |
l.addAll(4,m); |
163 |
> |
shouldThrow(); |
164 |
> |
} catch (IndexOutOfBoundsException success) {} |
165 |
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} |
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|
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/** |
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* addAll with negative index throws IOOBE |
169 |
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*/ |
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public void testAddAll4_BadIndex() { |
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try { |
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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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l.addAll(-1,m); |
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shouldThrow(); |
178 |
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} catch (IndexOutOfBoundsException success){} |
171 |
> |
LinkedList l = new LinkedList(); |
172 |
> |
l.add(new Object()); |
173 |
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LinkedList m = new LinkedList(); |
174 |
> |
m.add(new Object()); |
175 |
> |
try { |
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l.addAll(-1,m); |
177 |
> |
shouldThrow(); |
178 |
> |
} catch (IndexOutOfBoundsException success) {} |
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} |
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|
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/** |
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* poll succeeds unless empty |
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* poll succeeds unless empty |
183 |
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*/ |
184 |
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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) { |
187 |
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assertEquals(i, ((Integer)q.poll()).intValue()); |
187 |
> |
assertEquals(i, q.poll()); |
188 |
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} |
189 |
< |
assertNull(q.poll()); |
189 |
> |
assertNull(q.poll()); |
190 |
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} |
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|
192 |
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/** |
193 |
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* peek returns next element, or null if empty |
193 |
> |
* peek returns next element, or null if empty |
194 |
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*/ |
195 |
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public void testPeek() { |
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LinkedList q = populatedQueue(SIZE); |
197 |
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for (int i = 0; i < SIZE; ++i) { |
198 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
199 |
< |
q.poll(); |
198 |
> |
assertEquals(i, q.peek()); |
199 |
> |
assertEquals(i, q.poll()); |
200 |
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assertTrue(q.peek() == null || |
201 |
< |
i != ((Integer)q.peek()).intValue()); |
201 |
> |
!q.peek().equals(i)); |
202 |
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} |
203 |
< |
assertNull(q.peek()); |
203 |
> |
assertNull(q.peek()); |
204 |
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} |
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|
206 |
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/** |
209 |
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public void testElement() { |
210 |
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LinkedList q = populatedQueue(SIZE); |
211 |
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for (int i = 0; i < SIZE; ++i) { |
212 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
213 |
< |
q.poll(); |
212 |
> |
assertEquals(i, q.element()); |
213 |
> |
assertEquals(i, q.poll()); |
214 |
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} |
215 |
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try { |
216 |
|
q.element(); |
217 |
|
shouldThrow(); |
218 |
< |
} |
227 |
< |
catch (NoSuchElementException success) {} |
218 |
> |
} catch (NoSuchElementException success) {} |
219 |
|
} |
220 |
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|
221 |
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/** |
222 |
< |
* remove removes next element, or throws NSEE if empty |
222 |
> |
* remove removes next element, or throws NSEE if empty |
223 |
|
*/ |
224 |
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public void testRemove() { |
225 |
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LinkedList q = populatedQueue(SIZE); |
226 |
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for (int i = 0; i < SIZE; ++i) { |
227 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
227 |
> |
assertEquals(i, q.remove()); |
228 |
|
} |
229 |
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try { |
230 |
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q.remove(); |
231 |
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shouldThrow(); |
232 |
< |
} catch (NoSuchElementException success){ |
242 |
< |
} |
232 |
> |
} catch (NoSuchElementException success) {} |
233 |
|
} |
234 |
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|
235 |
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/** |
237 |
|
*/ |
238 |
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public void testRemoveElement() { |
239 |
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LinkedList q = populatedQueue(SIZE); |
240 |
< |
for (int i = 1; i < SIZE; i+=2) { |
241 |
< |
assertTrue(q.remove(new Integer(i))); |
242 |
< |
} |
243 |
< |
for (int i = 0; i < SIZE; i+=2) { |
244 |
< |
assertTrue(q.remove(new Integer(i))); |
245 |
< |
assertFalse(q.remove(new Integer(i+1))); |
240 |
> |
for (int i = 1; i < SIZE; i += 2) { |
241 |
> |
assertTrue(q.contains(i)); |
242 |
> |
assertTrue(q.remove((Integer)i)); |
243 |
> |
assertFalse(q.contains(i)); |
244 |
> |
assertTrue(q.contains(i-1)); |
245 |
> |
} |
246 |
> |
for (int i = 0; i < SIZE; i += 2) { |
247 |
> |
assertTrue(q.contains(i)); |
248 |
> |
assertTrue(q.remove((Integer)i)); |
249 |
> |
assertFalse(q.contains(i)); |
250 |
> |
assertFalse(q.remove((Integer)(i+1))); |
251 |
> |
assertFalse(q.contains(i+1)); |
252 |
|
} |
253 |
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assertTrue(q.isEmpty()); |
254 |
|
} |
273 |
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q.clear(); |
274 |
|
assertTrue(q.isEmpty()); |
275 |
|
assertEquals(0, q.size()); |
276 |
< |
q.add(new Integer(1)); |
276 |
> |
assertTrue(q.add(new Integer(1))); |
277 |
|
assertFalse(q.isEmpty()); |
278 |
|
q.clear(); |
279 |
|
assertTrue(q.isEmpty()); |
288 |
|
for (int i = 0; i < SIZE; ++i) { |
289 |
|
assertTrue(q.containsAll(p)); |
290 |
|
assertFalse(p.containsAll(q)); |
291 |
< |
p.add(new Integer(i)); |
291 |
> |
assertTrue(p.add(new Integer(i))); |
292 |
|
} |
293 |
|
assertTrue(p.containsAll(q)); |
294 |
|
} |
322 |
|
assertTrue(q.removeAll(p)); |
323 |
|
assertEquals(SIZE-i, q.size()); |
324 |
|
for (int j = 0; j < i; ++j) { |
325 |
< |
Integer I = (Integer)(p.remove()); |
326 |
< |
assertFalse(q.contains(I)); |
325 |
> |
Integer x = (Integer)(p.remove()); |
326 |
> |
assertFalse(q.contains(x)); |
327 |
|
} |
328 |
|
} |
329 |
|
} |
330 |
|
|
331 |
|
/** |
332 |
< |
* toArray contains all elements |
332 |
> |
* toArray contains all elements in FIFO order |
333 |
|
*/ |
334 |
|
public void testToArray() { |
335 |
|
LinkedList q = populatedQueue(SIZE); |
336 |
< |
Object[] o = q.toArray(); |
337 |
< |
Arrays.sort(o); |
338 |
< |
for (int i = 0; i < o.length; i++) |
343 |
< |
assertEquals(o[i], q.poll()); |
336 |
> |
Object[] o = q.toArray(); |
337 |
> |
for (int i = 0; i < o.length; i++) |
338 |
> |
assertSame(o[i], q.poll()); |
339 |
|
} |
340 |
|
|
341 |
|
/** |
342 |
< |
* toArray(a) contains all elements |
342 |
> |
* toArray(a) contains all elements in FIFO order |
343 |
|
*/ |
344 |
|
public void testToArray2() { |
345 |
< |
LinkedList q = populatedQueue(SIZE); |
346 |
< |
Integer[] ints = new Integer[SIZE]; |
347 |
< |
ints = (Integer[])q.toArray(ints); |
348 |
< |
Arrays.sort(ints); |
345 |
> |
LinkedList<Integer> q = populatedQueue(SIZE); |
346 |
> |
Integer[] ints = new Integer[SIZE]; |
347 |
> |
Integer[] array = q.toArray(ints); |
348 |
> |
assertSame(ints, array); |
349 |
|
for (int i = 0; i < ints.length; i++) |
350 |
< |
assertEquals(ints[i], q.poll()); |
350 |
> |
assertSame(ints[i], q.poll()); |
351 |
|
} |
352 |
|
|
353 |
|
/** |
354 |
< |
* toArray(null) throws NPE |
354 |
> |
* toArray(null) throws NullPointerException |
355 |
|
*/ |
356 |
< |
public void testToArray_BadArg() { |
357 |
< |
try { |
358 |
< |
LinkedList l = new LinkedList(); |
359 |
< |
l.add(new Object()); |
360 |
< |
Object o[] = l.toArray(null); |
361 |
< |
shouldThrow(); |
362 |
< |
} catch (NullPointerException success){} |
356 |
> |
public void testToArray_NullArg() { |
357 |
> |
LinkedList l = new LinkedList(); |
358 |
> |
l.add(new Object()); |
359 |
> |
try { |
360 |
> |
l.toArray(null); |
361 |
> |
shouldThrow(); |
362 |
> |
} catch (NullPointerException success) {} |
363 |
|
} |
364 |
|
|
365 |
|
/** |
366 |
< |
* toArray with incompatable aray type throws CCE |
366 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
367 |
|
*/ |
368 |
|
public void testToArray1_BadArg() { |
369 |
< |
try { |
370 |
< |
LinkedList l = new LinkedList(); |
371 |
< |
l.add(new Integer(5)); |
372 |
< |
Object o[] = l.toArray(new String[10] ); |
373 |
< |
shouldThrow(); |
374 |
< |
} catch (ArrayStoreException success){} |
369 |
> |
LinkedList l = new LinkedList(); |
370 |
> |
l.add(new Integer(5)); |
371 |
> |
try { |
372 |
> |
l.toArray(new String[10]); |
373 |
> |
shouldThrow(); |
374 |
> |
} catch (ArrayStoreException success) {} |
375 |
|
} |
376 |
|
|
377 |
|
/** |
378 |
< |
* iterator iterates through all elements |
378 |
> |
* iterator iterates through all elements |
379 |
|
*/ |
380 |
|
public void testIterator() { |
381 |
|
LinkedList q = populatedQueue(SIZE); |
382 |
|
int i = 0; |
383 |
< |
Iterator it = q.iterator(); |
383 |
> |
Iterator it = q.iterator(); |
384 |
|
while (it.hasNext()) { |
385 |
|
assertTrue(q.contains(it.next())); |
386 |
|
++i; |
389 |
|
} |
390 |
|
|
391 |
|
/** |
392 |
< |
* iterator ordering is FIFO |
392 |
> |
* iterator ordering is FIFO |
393 |
|
*/ |
394 |
|
public void testIteratorOrdering() { |
395 |
|
final LinkedList q = new LinkedList(); |
398 |
|
q.add(new Integer(3)); |
399 |
|
int k = 0; |
400 |
|
for (Iterator it = q.iterator(); it.hasNext();) { |
401 |
< |
int i = ((Integer)(it.next())).intValue(); |
407 |
< |
assertEquals(++k, i); |
401 |
> |
assertEquals(++k, it.next()); |
402 |
|
} |
403 |
|
|
404 |
|
assertEquals(3, k); |
407 |
|
/** |
408 |
|
* iterator.remove removes current element |
409 |
|
*/ |
410 |
< |
public void testIteratorRemove () { |
410 |
> |
public void testIteratorRemove() { |
411 |
|
final LinkedList q = new LinkedList(); |
412 |
|
q.add(new Integer(1)); |
413 |
|
q.add(new Integer(2)); |
414 |
|
q.add(new Integer(3)); |
415 |
|
Iterator it = q.iterator(); |
416 |
< |
it.next(); |
416 |
> |
assertEquals(1, it.next()); |
417 |
|
it.remove(); |
418 |
|
it = q.iterator(); |
419 |
< |
assertEquals(it.next(), new Integer(2)); |
420 |
< |
assertEquals(it.next(), new Integer(3)); |
419 |
> |
assertEquals(2, it.next()); |
420 |
> |
assertEquals(3, it.next()); |
421 |
|
assertFalse(it.hasNext()); |
422 |
|
} |
423 |
|
|
424 |
|
/** |
425 |
< |
* Descending iterator iterates through all elements |
425 |
> |
* Descending iterator iterates through all elements |
426 |
|
*/ |
427 |
|
public void testDescendingIterator() { |
428 |
|
LinkedList q = populatedQueue(SIZE); |
429 |
|
int i = 0; |
430 |
< |
Iterator it = q.descendingIterator(); |
430 |
> |
Iterator it = q.descendingIterator(); |
431 |
|
while (it.hasNext()) { |
432 |
|
assertTrue(q.contains(it.next())); |
433 |
|
++i; |
436 |
|
assertFalse(it.hasNext()); |
437 |
|
try { |
438 |
|
it.next(); |
439 |
< |
} catch (NoSuchElementException success) { |
440 |
< |
} |
439 |
> |
shouldThrow(); |
440 |
> |
} catch (NoSuchElementException success) {} |
441 |
|
} |
442 |
|
|
443 |
|
/** |
444 |
< |
* Descending iterator ordering is reverse FIFO |
444 |
> |
* Descending iterator ordering is reverse FIFO |
445 |
|
*/ |
446 |
|
public void testDescendingIteratorOrdering() { |
447 |
|
final LinkedList q = new LinkedList(); |
450 |
|
q.add(new Integer(1)); |
451 |
|
int k = 0; |
452 |
|
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
453 |
< |
int i = ((Integer)(it.next())).intValue(); |
460 |
< |
assertEquals(++k, i); |
453 |
> |
assertEquals(++k, it.next()); |
454 |
|
} |
455 |
|
|
456 |
|
assertEquals(3, k); |
459 |
|
/** |
460 |
|
* descendingIterator.remove removes current element |
461 |
|
*/ |
462 |
< |
public void testDescendingIteratorRemove () { |
462 |
> |
public void testDescendingIteratorRemove() { |
463 |
|
final LinkedList q = new LinkedList(); |
464 |
< |
q.add(new Integer(3)); |
465 |
< |
q.add(new Integer(2)); |
466 |
< |
q.add(new Integer(1)); |
464 |
> |
q.add(three); |
465 |
> |
q.add(two); |
466 |
> |
q.add(one); |
467 |
|
Iterator it = q.descendingIterator(); |
468 |
|
it.next(); |
469 |
|
it.remove(); |
470 |
|
it = q.descendingIterator(); |
471 |
< |
assertEquals(it.next(), new Integer(2)); |
472 |
< |
assertEquals(it.next(), new Integer(3)); |
471 |
> |
assertSame(it.next(), two); |
472 |
> |
assertSame(it.next(), three); |
473 |
|
assertFalse(it.hasNext()); |
474 |
|
} |
475 |
|
|
483 |
– |
|
476 |
|
/** |
477 |
|
* toString contains toStrings of elements |
478 |
|
*/ |
480 |
|
LinkedList q = populatedQueue(SIZE); |
481 |
|
String s = q.toString(); |
482 |
|
for (int i = 0; i < SIZE; ++i) { |
483 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
483 |
> |
assertTrue(s.contains(String.valueOf(i))); |
484 |
|
} |
485 |
|
} |
486 |
|
|
489 |
|
*/ |
490 |
|
public void testAddFirst() { |
491 |
|
LinkedList q = populatedQueue(3); |
492 |
< |
q.addFirst(four); |
493 |
< |
assertEquals(four,q.peek()); |
492 |
> |
q.addFirst(four); |
493 |
> |
assertSame(four, q.peek()); |
494 |
|
} |
495 |
|
|
496 |
|
/** |
498 |
|
*/ |
499 |
|
public void testPush() { |
500 |
|
LinkedList q = populatedQueue(3); |
501 |
< |
q.pollLast(); |
502 |
< |
q.push(four); |
511 |
< |
assertEquals(four,q.peekFirst()); |
501 |
> |
q.push(four); |
502 |
> |
assertSame(four, q.peekFirst()); |
503 |
|
} |
504 |
|
|
505 |
|
/** |
506 |
< |
* pop removes next element, or throws NSEE if empty |
506 |
> |
* pop removes next element, or throws NSEE if empty |
507 |
|
*/ |
508 |
|
public void testPop() { |
509 |
|
LinkedList q = populatedQueue(SIZE); |
510 |
|
for (int i = 0; i < SIZE; ++i) { |
511 |
< |
assertEquals(i, ((Integer)q.pop()).intValue()); |
511 |
> |
assertEquals(i, q.pop()); |
512 |
|
} |
513 |
|
try { |
514 |
|
q.pop(); |
515 |
|
shouldThrow(); |
516 |
< |
} catch (NoSuchElementException success){ |
526 |
< |
} |
516 |
> |
} catch (NoSuchElementException success) {} |
517 |
|
} |
518 |
|
|
519 |
|
/** |
535 |
|
} |
536 |
|
|
537 |
|
/** |
538 |
< |
* pollLast succeeds unless empty |
538 |
> |
* pollLast succeeds unless empty |
539 |
|
*/ |
540 |
|
public void testPollLast() { |
541 |
|
LinkedList q = populatedQueue(SIZE); |
542 |
|
for (int i = SIZE-1; i >= 0; --i) { |
543 |
< |
assertEquals(i, ((Integer)q.pollLast()).intValue()); |
543 |
> |
assertEquals(i, q.pollLast()); |
544 |
|
} |
545 |
< |
assertNull(q.pollLast()); |
545 |
> |
assertNull(q.pollLast()); |
546 |
|
} |
547 |
|
|
548 |
|
/** |
549 |
< |
* peekFirst returns next element, or null if empty |
549 |
> |
* peekFirst returns next element, or null if empty |
550 |
|
*/ |
551 |
|
public void testPeekFirst() { |
552 |
|
LinkedList q = populatedQueue(SIZE); |
553 |
|
for (int i = 0; i < SIZE; ++i) { |
554 |
< |
assertEquals(i, ((Integer)q.peekFirst()).intValue()); |
555 |
< |
q.pollFirst(); |
554 |
> |
assertEquals(i, q.peekFirst()); |
555 |
> |
assertEquals(i, q.pollFirst()); |
556 |
|
assertTrue(q.peekFirst() == null || |
557 |
< |
i != ((Integer)q.peekFirst()).intValue()); |
557 |
> |
!q.peekFirst().equals(i)); |
558 |
|
} |
559 |
< |
assertNull(q.peekFirst()); |
559 |
> |
assertNull(q.peekFirst()); |
560 |
|
} |
561 |
|
|
572 |
– |
|
562 |
|
/** |
563 |
< |
* peekLast returns next element, or null if empty |
563 |
> |
* peekLast returns next element, or null if empty |
564 |
|
*/ |
565 |
|
public void testPeekLast() { |
566 |
|
LinkedList q = populatedQueue(SIZE); |
567 |
|
for (int i = SIZE-1; i >= 0; --i) { |
568 |
< |
assertEquals(i, ((Integer)q.peekLast()).intValue()); |
569 |
< |
q.pollLast(); |
568 |
> |
assertEquals(i, q.peekLast()); |
569 |
> |
assertEquals(i, q.pollLast()); |
570 |
|
assertTrue(q.peekLast() == null || |
571 |
< |
i != ((Integer)q.peekLast()).intValue()); |
571 |
> |
!q.peekLast().equals(i)); |
572 |
|
} |
573 |
< |
assertNull(q.peekLast()); |
573 |
> |
assertNull(q.peekLast()); |
574 |
|
} |
575 |
|
|
576 |
|
public void testFirstElement() { |
577 |
|
LinkedList q = populatedQueue(SIZE); |
578 |
|
for (int i = 0; i < SIZE; ++i) { |
579 |
< |
assertEquals(i, ((Integer)q.getFirst()).intValue()); |
580 |
< |
q.pollFirst(); |
579 |
> |
assertEquals(i, q.getFirst()); |
580 |
> |
assertEquals(i, q.pollFirst()); |
581 |
|
} |
582 |
|
try { |
583 |
|
q.getFirst(); |
584 |
|
shouldThrow(); |
585 |
< |
} |
597 |
< |
catch (NoSuchElementException success) {} |
585 |
> |
} catch (NoSuchElementException success) {} |
586 |
|
} |
587 |
|
|
588 |
|
/** |
589 |
< |
* getLast returns next element, or throws NSEE if empty |
589 |
> |
* getLast returns next element, or throws NSEE if empty |
590 |
|
*/ |
591 |
|
public void testLastElement() { |
592 |
|
LinkedList q = populatedQueue(SIZE); |
593 |
|
for (int i = SIZE-1; i >= 0; --i) { |
594 |
< |
assertEquals(i, ((Integer)q.getLast()).intValue()); |
595 |
< |
q.pollLast(); |
594 |
> |
assertEquals(i, q.getLast()); |
595 |
> |
assertEquals(i, q.pollLast()); |
596 |
|
} |
597 |
|
try { |
598 |
|
q.getLast(); |
599 |
|
shouldThrow(); |
600 |
< |
} |
601 |
< |
catch (NoSuchElementException success) {} |
614 |
< |
assertNull(q.peekLast()); |
600 |
> |
} catch (NoSuchElementException success) {} |
601 |
> |
assertNull(q.peekLast()); |
602 |
|
} |
603 |
|
|
604 |
|
/** |
606 |
|
*/ |
607 |
|
public void testRemoveFirstOccurrence() { |
608 |
|
LinkedList q = populatedQueue(SIZE); |
609 |
< |
for (int i = 1; i < SIZE; i+=2) { |
609 |
> |
for (int i = 1; i < SIZE; i += 2) { |
610 |
|
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
611 |
|
} |
612 |
< |
for (int i = 0; i < SIZE; i+=2) { |
612 |
> |
for (int i = 0; i < SIZE; i += 2) { |
613 |
|
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
614 |
|
assertFalse(q.removeFirstOccurrence(new Integer(i+1))); |
615 |
|
} |
621 |
|
*/ |
622 |
|
public void testRemoveLastOccurrence() { |
623 |
|
LinkedList q = populatedQueue(SIZE); |
624 |
< |
for (int i = 1; i < SIZE; i+=2) { |
624 |
> |
for (int i = 1; i < SIZE; i += 2) { |
625 |
|
assertTrue(q.removeLastOccurrence(new Integer(i))); |
626 |
|
} |
627 |
< |
for (int i = 0; i < SIZE; i+=2) { |
627 |
> |
for (int i = 0; i < SIZE; i += 2) { |
628 |
|
assertTrue(q.removeLastOccurrence(new Integer(i))); |
629 |
|
assertFalse(q.removeLastOccurrence(new Integer(i+1))); |
630 |
|
} |