1 |
/* |
/* |
2 |
* Written by members of JCP JSR-166 Expert Group and released to the |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
* public domain. Use, modify, and redistribute this code in any way |
* Expert Group and released to the public domain, as explained at |
4 |
* without acknowledgement. Other contributors include Andrew Wright, |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
* Jeffrey Hayes, Pat Fischer, Mike Judd. |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
* Pat Fisher, Mike Judd. |
7 |
*/ |
*/ |
8 |
|
|
9 |
import junit.framework.*; |
import junit.framework.*; |
10 |
import java.util.*; |
import java.util.Arrays; |
11 |
import java.util.concurrent.*; |
import java.util.Collection; |
12 |
|
import java.util.Iterator; |
13 |
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import java.util.LinkedList; |
14 |
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import java.util.NoSuchElementException; |
15 |
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|
16 |
public class LinkedListTest extends JSR166TestCase { |
public class LinkedListTest extends JSR166TestCase { |
17 |
public static void main(String[] args) { |
public static void main(String[] args) { |
23 |
} |
} |
24 |
|
|
25 |
/** |
/** |
26 |
* Create a queue of given size containing consecutive |
* Creates a queue of given size containing consecutive |
27 |
* Integers 0 ... n. |
* Integers 0 ... n. |
28 |
*/ |
*/ |
29 |
private LinkedList populatedQueue(int n) { |
private LinkedList<Integer> populatedQueue(int n) { |
30 |
LinkedList q = new LinkedList(); |
LinkedList<Integer> q = new LinkedList<Integer>(); |
31 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
32 |
for(int i = 0; i < n; ++i) |
for(int i = 0; i < n; ++i) |
33 |
assertTrue(q.offer(new Integer(i))); |
assertTrue(q.offer(new Integer(i))); |
36 |
return q; |
return q; |
37 |
} |
} |
38 |
|
|
39 |
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/** |
40 |
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* new queue is empty |
41 |
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*/ |
42 |
public void testConstructor1(){ |
public void testConstructor1(){ |
43 |
assertEquals(0, new LinkedList().size()); |
assertEquals(0, new LinkedList().size()); |
44 |
} |
} |
45 |
|
|
46 |
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/** |
47 |
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* Initializing from null Collection throws NPE |
48 |
|
*/ |
49 |
public void testConstructor3() { |
public void testConstructor3() { |
50 |
try { |
try { |
51 |
LinkedList q = new LinkedList((Collection)null); |
LinkedList q = new LinkedList((Collection)null); |
52 |
fail("Cannot make from null collection"); |
shouldThrow(); |
53 |
} |
} catch (NullPointerException success) {} |
|
catch (NullPointerException success) {} |
|
54 |
} |
} |
55 |
|
|
56 |
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/** |
57 |
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* Queue contains all elements of collection used to initialize |
58 |
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*/ |
59 |
public void testConstructor6(){ |
public void testConstructor6(){ |
|
try { |
|
60 |
Integer[] ints = new Integer[SIZE]; |
Integer[] ints = new Integer[SIZE]; |
61 |
for (int i = 0; i < SIZE; ++i) |
for (int i = 0; i < SIZE; ++i) |
62 |
ints[i] = new Integer(i); |
ints[i] = i; |
63 |
LinkedList q = new LinkedList(Arrays.asList(ints)); |
LinkedList q = new LinkedList(Arrays.asList(ints)); |
64 |
for (int i = 0; i < SIZE; ++i) |
for (int i = 0; i < SIZE; ++i) |
65 |
assertEquals(ints[i], q.poll()); |
assertEquals(ints[i], q.poll()); |
66 |
} |
} |
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finally {} |
|
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} |
|
67 |
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|
68 |
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/** |
69 |
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* isEmpty is true before add, false after |
70 |
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*/ |
71 |
public void testEmpty() { |
public void testEmpty() { |
72 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
73 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
79 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
80 |
} |
} |
81 |
|
|
82 |
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/** |
83 |
|
* size changes when elements added and removed |
84 |
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*/ |
85 |
public void testSize() { |
public void testSize() { |
86 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
87 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
94 |
} |
} |
95 |
} |
} |
96 |
|
|
97 |
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/** |
98 |
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* offer(null) succeeds |
99 |
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*/ |
100 |
public void testOfferNull(){ |
public void testOfferNull(){ |
|
try { |
|
101 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
102 |
q.offer(null); |
q.offer(null); |
|
} catch (NullPointerException ie) { |
|
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fail("should not throw NPE"); |
|
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} |
|
103 |
} |
} |
104 |
|
|
105 |
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/** |
106 |
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* Offer succeeds |
107 |
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*/ |
108 |
public void testOffer() { |
public void testOffer() { |
109 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
110 |
assertTrue(q.offer(new Integer(0))); |
assertTrue(q.offer(new Integer(0))); |
111 |
assertTrue(q.offer(new Integer(1))); |
assertTrue(q.offer(new Integer(1))); |
112 |
} |
} |
113 |
|
|
114 |
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/** |
115 |
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* add succeeds |
116 |
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*/ |
117 |
public void testAdd(){ |
public void testAdd(){ |
118 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
119 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
122 |
} |
} |
123 |
} |
} |
124 |
|
|
125 |
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/** |
126 |
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* addAll(null) throws NPE |
127 |
|
*/ |
128 |
public void testAddAll1(){ |
public void testAddAll1(){ |
129 |
try { |
try { |
130 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
131 |
q.addAll(null); |
q.addAll(null); |
132 |
fail("Cannot add null collection"); |
shouldThrow(); |
133 |
} |
} catch (NullPointerException success) {} |
|
catch (NullPointerException success) {} |
|
134 |
} |
} |
135 |
|
|
136 |
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/** |
137 |
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* Queue contains all elements, in traversal order, of successful addAll |
138 |
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*/ |
139 |
public void testAddAll5(){ |
public void testAddAll5(){ |
|
try { |
|
140 |
Integer[] empty = new Integer[0]; |
Integer[] empty = new Integer[0]; |
141 |
Integer[] ints = new Integer[SIZE]; |
Integer[] ints = new Integer[SIZE]; |
142 |
for (int i = 0; i < SIZE; ++i) |
for (int i = 0; i < SIZE; ++i) |
143 |
ints[i] = new Integer(i); |
ints[i] = i; |
144 |
LinkedList q = new LinkedList(); |
LinkedList q = new LinkedList(); |
145 |
assertFalse(q.addAll(Arrays.asList(empty))); |
assertFalse(q.addAll(Arrays.asList(empty))); |
146 |
assertTrue(q.addAll(Arrays.asList(ints))); |
assertTrue(q.addAll(Arrays.asList(ints))); |
147 |
for (int i = 0; i < SIZE; ++i) |
for (int i = 0; i < SIZE; ++i) |
148 |
assertEquals(ints[i], q.poll()); |
assertEquals(ints[i], q.poll()); |
149 |
} |
} |
150 |
finally {} |
|
151 |
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/** |
152 |
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* addAll with too large an index throws IOOBE |
153 |
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*/ |
154 |
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public void testAddAll2_IndexOutOfBoundsException() { |
155 |
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LinkedList l = new LinkedList(); |
156 |
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l.add(new Object()); |
157 |
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LinkedList m = new LinkedList(); |
158 |
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m.add(new Object()); |
159 |
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try { |
160 |
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l.addAll(4,m); |
161 |
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shouldThrow(); |
162 |
|
} catch (IndexOutOfBoundsException success) {} |
163 |
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} |
164 |
|
|
165 |
|
/** |
166 |
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* addAll with negative index throws IOOBE |
167 |
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*/ |
168 |
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public void testAddAll4_BadIndex() { |
169 |
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LinkedList l = new LinkedList(); |
170 |
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l.add(new Object()); |
171 |
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LinkedList m = new LinkedList(); |
172 |
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m.add(new Object()); |
173 |
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try { |
174 |
|
l.addAll(-1,m); |
175 |
|
shouldThrow(); |
176 |
|
} catch (IndexOutOfBoundsException success) {} |
177 |
} |
} |
178 |
|
|
179 |
|
/** |
180 |
|
* poll succeeds unless empty |
181 |
|
*/ |
182 |
public void testPoll(){ |
public void testPoll(){ |
183 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
184 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
185 |
assertEquals(i, ((Integer)q.poll()).intValue()); |
assertEquals(i, q.poll()); |
186 |
} |
} |
187 |
assertNull(q.poll()); |
assertNull(q.poll()); |
188 |
} |
} |
189 |
|
|
190 |
|
/** |
191 |
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* peek returns next element, or null if empty |
192 |
|
*/ |
193 |
public void testPeek(){ |
public void testPeek(){ |
194 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
195 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
196 |
assertEquals(i, ((Integer)q.peek()).intValue()); |
assertEquals(i, q.peek()); |
197 |
q.poll(); |
assertEquals(i, q.poll()); |
198 |
assertTrue(q.peek() == null || |
assertTrue(q.peek() == null || |
199 |
i != ((Integer)q.peek()).intValue()); |
!q.peek().equals(i)); |
200 |
} |
} |
201 |
assertNull(q.peek()); |
assertNull(q.peek()); |
202 |
} |
} |
203 |
|
|
204 |
|
/** |
205 |
|
* element returns next element, or throws NSEE if empty |
206 |
|
*/ |
207 |
public void testElement(){ |
public void testElement(){ |
208 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
209 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
210 |
assertEquals(i, ((Integer)q.element()).intValue()); |
assertEquals(i, q.element()); |
211 |
q.poll(); |
assertEquals(i, q.poll()); |
212 |
} |
} |
213 |
try { |
try { |
214 |
q.element(); |
q.element(); |
215 |
fail("no such element"); |
shouldThrow(); |
216 |
} |
} catch (NoSuchElementException success) {} |
|
catch (NoSuchElementException success) {} |
|
217 |
} |
} |
218 |
|
|
219 |
|
/** |
220 |
|
* remove removes next element, or throws NSEE if empty |
221 |
|
*/ |
222 |
public void testRemove(){ |
public void testRemove(){ |
223 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
224 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
225 |
assertEquals(i, ((Integer)q.remove()).intValue()); |
assertEquals(i, q.remove()); |
226 |
} |
} |
227 |
try { |
try { |
228 |
q.remove(); |
q.remove(); |
229 |
fail("remove should throw"); |
shouldThrow(); |
230 |
} catch (NoSuchElementException success){ |
} catch (NoSuchElementException success) {} |
|
} |
|
231 |
} |
} |
232 |
|
|
233 |
|
/** |
234 |
|
* remove(x) removes x and returns true if present |
235 |
|
*/ |
236 |
public void testRemoveElement(){ |
public void testRemoveElement(){ |
237 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
238 |
for (int i = 1; i < SIZE; i+=2) { |
for (int i = 1; i < SIZE; i+=2) { |
239 |
assertTrue(q.remove(new Integer(i))); |
assertTrue(q.contains(i)); |
240 |
|
assertTrue(q.remove((Integer)i)); |
241 |
|
assertFalse(q.contains(i)); |
242 |
|
assertTrue(q.contains(i-1)); |
243 |
} |
} |
244 |
for (int i = 0; i < SIZE; i+=2) { |
for (int i = 0; i < SIZE; i+=2) { |
245 |
assertTrue(q.remove(new Integer(i))); |
assertTrue(q.contains(i)); |
246 |
assertFalse(q.remove(new Integer(i+1))); |
assertTrue(q.remove((Integer)i)); |
247 |
|
assertFalse(q.contains(i)); |
248 |
|
assertFalse(q.remove((Integer)(i+1))); |
249 |
|
assertFalse(q.contains(i+1)); |
250 |
} |
} |
251 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
252 |
} |
} |
253 |
|
|
254 |
|
/** |
255 |
|
* contains(x) reports true when elements added but not yet removed |
256 |
|
*/ |
257 |
public void testContains(){ |
public void testContains(){ |
258 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
259 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
263 |
} |
} |
264 |
} |
} |
265 |
|
|
266 |
|
/** |
267 |
|
* clear removes all elements |
268 |
|
*/ |
269 |
public void testClear(){ |
public void testClear(){ |
270 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
271 |
q.clear(); |
q.clear(); |
272 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
273 |
assertEquals(0, q.size()); |
assertEquals(0, q.size()); |
274 |
q.add(new Integer(1)); |
assertTrue(q.add(new Integer(1))); |
275 |
assertFalse(q.isEmpty()); |
assertFalse(q.isEmpty()); |
276 |
q.clear(); |
q.clear(); |
277 |
assertTrue(q.isEmpty()); |
assertTrue(q.isEmpty()); |
278 |
} |
} |
279 |
|
|
280 |
|
/** |
281 |
|
* containsAll(c) is true when c contains a subset of elements |
282 |
|
*/ |
283 |
public void testContainsAll(){ |
public void testContainsAll(){ |
284 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
285 |
LinkedList p = new LinkedList(); |
LinkedList p = new LinkedList(); |
286 |
for (int i = 0; i < SIZE; ++i) { |
for (int i = 0; i < SIZE; ++i) { |
287 |
assertTrue(q.containsAll(p)); |
assertTrue(q.containsAll(p)); |
288 |
assertFalse(p.containsAll(q)); |
assertFalse(p.containsAll(q)); |
289 |
p.add(new Integer(i)); |
assertTrue(p.add(new Integer(i))); |
290 |
} |
} |
291 |
assertTrue(p.containsAll(q)); |
assertTrue(p.containsAll(q)); |
292 |
} |
} |
293 |
|
|
294 |
|
/** |
295 |
|
* retainAll(c) retains only those elements of c and reports true if changed |
296 |
|
*/ |
297 |
public void testRetainAll(){ |
public void testRetainAll(){ |
298 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
299 |
LinkedList p = populatedQueue(SIZE); |
LinkedList p = populatedQueue(SIZE); |
310 |
} |
} |
311 |
} |
} |
312 |
|
|
313 |
|
/** |
314 |
|
* removeAll(c) removes only those elements of c and reports true if changed |
315 |
|
*/ |
316 |
public void testRemoveAll(){ |
public void testRemoveAll(){ |
317 |
for (int i = 1; i < SIZE; ++i) { |
for (int i = 1; i < SIZE; ++i) { |
318 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
326 |
} |
} |
327 |
} |
} |
328 |
|
|
329 |
|
/** |
330 |
|
* toArray contains all elements in FIFO order |
331 |
|
*/ |
332 |
public void testToArray(){ |
public void testToArray(){ |
333 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
334 |
Object[] o = q.toArray(); |
Object[] o = q.toArray(); |
|
Arrays.sort(o); |
|
335 |
for(int i = 0; i < o.length; i++) |
for(int i = 0; i < o.length; i++) |
336 |
assertEquals(o[i], q.poll()); |
assertSame(o[i], q.poll()); |
337 |
} |
} |
338 |
|
|
339 |
|
/** |
340 |
|
* toArray(a) contains all elements in FIFO order |
341 |
|
*/ |
342 |
public void testToArray2(){ |
public void testToArray2(){ |
343 |
LinkedList q = populatedQueue(SIZE); |
LinkedList<Integer> q = populatedQueue(SIZE); |
344 |
Integer[] ints = new Integer[SIZE]; |
Integer[] ints = new Integer[SIZE]; |
345 |
ints = (Integer[])q.toArray(ints); |
Integer[] array = q.toArray(ints); |
346 |
Arrays.sort(ints); |
assertSame(ints, array); |
347 |
for(int i = 0; i < ints.length; i++) |
for(int i = 0; i < ints.length; i++) |
348 |
assertEquals(ints[i], q.poll()); |
assertSame(ints[i], q.poll()); |
349 |
|
} |
350 |
|
|
351 |
|
/** |
352 |
|
* toArray(null) throws NullPointerException |
353 |
|
*/ |
354 |
|
public void testToArray_NullArg() { |
355 |
|
LinkedList l = new LinkedList(); |
356 |
|
l.add(new Object()); |
357 |
|
try { |
358 |
|
l.toArray(null); |
359 |
|
shouldThrow(); |
360 |
|
} catch (NullPointerException success) {} |
361 |
|
} |
362 |
|
|
363 |
|
/** |
364 |
|
* toArray(incompatible array type) throws ArrayStoreException |
365 |
|
*/ |
366 |
|
public void testToArray1_BadArg() { |
367 |
|
LinkedList l = new LinkedList(); |
368 |
|
l.add(new Integer(5)); |
369 |
|
try { |
370 |
|
l.toArray(new String[10]); |
371 |
|
shouldThrow(); |
372 |
|
} catch (ArrayStoreException success) {} |
373 |
} |
} |
374 |
|
|
375 |
|
/** |
376 |
|
* iterator iterates through all elements |
377 |
|
*/ |
378 |
public void testIterator(){ |
public void testIterator(){ |
379 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
380 |
int i = 0; |
int i = 0; |
386 |
assertEquals(i, SIZE); |
assertEquals(i, SIZE); |
387 |
} |
} |
388 |
|
|
389 |
|
/** |
390 |
|
* iterator ordering is FIFO |
391 |
|
*/ |
392 |
public void testIteratorOrdering() { |
public void testIteratorOrdering() { |
|
|
|
393 |
final LinkedList q = new LinkedList(); |
final LinkedList q = new LinkedList(); |
|
|
|
394 |
q.add(new Integer(1)); |
q.add(new Integer(1)); |
395 |
q.add(new Integer(2)); |
q.add(new Integer(2)); |
396 |
q.add(new Integer(3)); |
q.add(new Integer(3)); |
|
|
|
397 |
int k = 0; |
int k = 0; |
398 |
for (Iterator it = q.iterator(); it.hasNext();) { |
for (Iterator it = q.iterator(); it.hasNext();) { |
399 |
int i = ((Integer)(it.next())).intValue(); |
assertEquals(++k, it.next()); |
|
assertEquals("items should come out in order", ++k, i); |
|
400 |
} |
} |
401 |
|
|
402 |
assertEquals("should go through 3 elements", 3, k); |
assertEquals(3, k); |
403 |
} |
} |
404 |
|
|
405 |
|
/** |
406 |
|
* iterator.remove removes current element |
407 |
|
*/ |
408 |
public void testIteratorRemove () { |
public void testIteratorRemove () { |
409 |
final LinkedList q = new LinkedList(); |
final LinkedList q = new LinkedList(); |
|
|
|
410 |
q.add(new Integer(1)); |
q.add(new Integer(1)); |
411 |
q.add(new Integer(2)); |
q.add(new Integer(2)); |
412 |
q.add(new Integer(3)); |
q.add(new Integer(3)); |
|
|
|
413 |
Iterator it = q.iterator(); |
Iterator it = q.iterator(); |
414 |
it.next(); |
assertEquals(1, it.next()); |
415 |
it.remove(); |
it.remove(); |
|
|
|
416 |
it = q.iterator(); |
it = q.iterator(); |
417 |
assertEquals(it.next(), new Integer(2)); |
assertEquals(2, it.next()); |
418 |
assertEquals(it.next(), new Integer(3)); |
assertEquals(3, it.next()); |
419 |
assertFalse(it.hasNext()); |
assertFalse(it.hasNext()); |
420 |
} |
} |
421 |
|
|
422 |
|
/** |
423 |
public void testToString(){ |
* Descending iterator iterates through all elements |
424 |
|
*/ |
425 |
|
public void testDescendingIterator() { |
426 |
LinkedList q = populatedQueue(SIZE); |
LinkedList q = populatedQueue(SIZE); |
427 |
String s = q.toString(); |
int i = 0; |
428 |
for (int i = 0; i < SIZE; ++i) { |
Iterator it = q.descendingIterator(); |
429 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
while (it.hasNext()) { |
430 |
|
assertTrue(q.contains(it.next())); |
431 |
|
++i; |
432 |
} |
} |
433 |
|
assertEquals(i, SIZE); |
434 |
|
assertFalse(it.hasNext()); |
435 |
|
try { |
436 |
|
it.next(); |
437 |
|
shouldThrow(); |
438 |
|
} catch (NoSuchElementException success) {} |
439 |
} |
} |
440 |
|
|
441 |
public void testAddFirst(){ |
/** |
442 |
LinkedList q = populatedQueue(3); |
* Descending iterator ordering is reverse FIFO |
443 |
q.addFirst(new Integer(4)); |
*/ |
444 |
assertEquals(new Integer(4),q.get(0)); |
public void testDescendingIteratorOrdering() { |
445 |
|
final LinkedList q = new LinkedList(); |
446 |
|
q.add(new Integer(3)); |
447 |
|
q.add(new Integer(2)); |
448 |
|
q.add(new Integer(1)); |
449 |
|
int k = 0; |
450 |
|
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
451 |
|
assertEquals(++k, it.next()); |
452 |
} |
} |
453 |
|
|
454 |
public void testAddLast(){ |
assertEquals(3, k); |
|
LinkedList q = populatedQueue(3); |
|
|
q.addLast(new Integer(3)); |
|
|
assertEquals(new Integer(3),q.get(3)); |
|
455 |
} |
} |
456 |
|
|
457 |
public void testGetFirst() { |
/** |
458 |
LinkedList q = populatedQueue(3); |
* descendingIterator.remove removes current element |
459 |
assertEquals(new Integer(0),q.getFirst()); |
*/ |
460 |
|
public void testDescendingIteratorRemove() { |
461 |
|
final LinkedList q = new LinkedList(); |
462 |
|
q.add(three); |
463 |
|
q.add(two); |
464 |
|
q.add(one); |
465 |
|
Iterator it = q.descendingIterator(); |
466 |
|
it.next(); |
467 |
|
it.remove(); |
468 |
|
it = q.descendingIterator(); |
469 |
|
assertSame(it.next(), two); |
470 |
|
assertSame(it.next(), three); |
471 |
|
assertFalse(it.hasNext()); |
472 |
} |
} |
473 |
|
|
474 |
public void testGetLast() { |
/** |
475 |
LinkedList q = populatedQueue(3); |
* toString contains toStrings of elements |
476 |
assertEquals(new Integer(2),q.getLast()); |
*/ |
477 |
|
public void testToString() { |
478 |
|
LinkedList q = populatedQueue(SIZE); |
479 |
|
String s = q.toString(); |
480 |
|
for (int i = 0; i < SIZE; ++i) { |
481 |
|
assertTrue(s.contains(String.valueOf(i))); |
482 |
} |
} |
|
|
|
|
public void testIndexOf(){ |
|
|
LinkedList q = populatedQueue(3); |
|
|
assertEquals(0,q.indexOf(new Integer(0))); |
|
|
assertEquals(1,q.indexOf(new Integer(1))); |
|
|
assertEquals(2,q.indexOf(new Integer(2))); |
|
|
assertEquals(-1, q.indexOf("not there")); |
|
483 |
} |
} |
484 |
|
|
485 |
public void testLastIndexOf(){ |
/** |
486 |
|
* peek returns element inserted with addFirst |
487 |
|
*/ |
488 |
|
public void testAddFirst() { |
489 |
LinkedList q = populatedQueue(3); |
LinkedList q = populatedQueue(3); |
490 |
q.add(new Integer(2)); |
q.addFirst(four); |
491 |
assertEquals(3,q.lastIndexOf(new Integer(2))); |
assertSame(four, q.peek()); |
|
assertEquals(-1, q.lastIndexOf("not there")); |
|
492 |
} |
} |
493 |
|
|
494 |
public void testSet(){ |
/** |
495 |
|
* peekFirst returns element inserted with push |
496 |
|
*/ |
497 |
|
public void testPush() { |
498 |
LinkedList q = populatedQueue(3); |
LinkedList q = populatedQueue(3); |
499 |
q.set(0,(new Integer(1))); |
q.push(four); |
500 |
assertFalse(q.contains(new Integer(0))); |
assertSame(four, q.peekFirst()); |
|
assertEquals(new Integer(1), q.get(0)); |
|
|
} |
|
|
|
|
|
|
|
|
public void testGetFirst_NoSuchElementException(){ |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.getFirst(); |
|
|
fail("First Element"); |
|
|
} |
|
|
catch(NoSuchElementException success) {} |
|
|
} |
|
|
|
|
|
public void testRemoveFirst() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.removeFirst(); |
|
|
fail("R: First Element"); |
|
|
} |
|
|
catch(NoSuchElementException success) {} |
|
501 |
} |
} |
502 |
|
|
503 |
public void testRemoveLast() { |
/** |
504 |
try { |
* pop removes next element, or throws NSEE if empty |
505 |
LinkedList l = new LinkedList(); |
*/ |
506 |
l.removeLast(); |
public void testPop() { |
507 |
fail("R: Last Element"); |
LinkedList q = populatedQueue(SIZE); |
508 |
} |
for (int i = 0; i < SIZE; ++i) { |
509 |
catch(NoSuchElementException success) {} |
assertEquals(i, q.pop()); |
510 |
} |
} |
|
|
|
|
public void testGetLast_NoSuchElementException(){ |
|
511 |
try { |
try { |
512 |
LinkedList l = new LinkedList(); |
q.pop(); |
513 |
l.getLast(); |
shouldThrow(); |
514 |
fail("Last Element"); |
} catch (NoSuchElementException success) {} |
515 |
} |
} |
|
catch(NoSuchElementException success) {} |
|
|
} |
|
|
|
|
516 |
|
|
517 |
public void testAddAll_NullPointerException(){ |
/** |
518 |
try { |
* OfferFirst succeeds |
519 |
LinkedList l = new LinkedList(); |
*/ |
520 |
l.addAll((Collection)null); |
public void testOfferFirst() { |
521 |
fail("Add All Failed"); |
LinkedList q = new LinkedList(); |
522 |
} |
assertTrue(q.offerFirst(new Integer(0))); |
523 |
catch(NullPointerException success){} |
assertTrue(q.offerFirst(new Integer(1))); |
524 |
} |
} |
525 |
|
|
526 |
|
/** |
527 |
public void testAddAll1_OutOfBounds() { |
* OfferLast succeeds |
528 |
try { |
*/ |
529 |
LinkedList l = new LinkedList(); |
public void testOfferLast() { |
530 |
l.addAll(4,new LinkedList()); |
LinkedList q = new LinkedList(); |
531 |
fail("boolean addAll(int, Collection) should throw IndexOutOfBoundsException"); |
assertTrue(q.offerLast(new Integer(0))); |
532 |
} |
assertTrue(q.offerLast(new Integer(1))); |
|
catch(IndexOutOfBoundsException success) {} |
|
533 |
} |
} |
534 |
|
|
535 |
|
/** |
536 |
public void testAddAll2_IndexOutOfBoundsException() { |
* pollLast succeeds unless empty |
537 |
try { |
*/ |
538 |
LinkedList l = new LinkedList(); |
public void testPollLast() { |
539 |
l.add(new Object()); |
LinkedList q = populatedQueue(SIZE); |
540 |
LinkedList m = new LinkedList(); |
for (int i = SIZE-1; i >= 0; --i) { |
541 |
m.add(new Object()); |
assertEquals(i, q.pollLast()); |
|
l.addAll(4,m); |
|
|
fail("Add All Failed " + l.size()); |
|
|
}catch(IndexOutOfBoundsException success) {} |
|
542 |
} |
} |
543 |
|
assertNull(q.pollLast()); |
|
public void testAddAll4_BadIndex() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
LinkedList m = new LinkedList(); |
|
|
m.add(new Object()); |
|
|
l.addAll(-1,m); |
|
|
fail("Add All Failed " + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
544 |
} |
} |
545 |
|
|
546 |
public void testget1() { |
/** |
547 |
try { |
* peekFirst returns next element, or null if empty |
548 |
LinkedList l = new LinkedList(); |
*/ |
549 |
l.add(new Object()); |
public void testPeekFirst() { |
550 |
l.get(-1); |
LinkedList q = populatedQueue(SIZE); |
551 |
fail("get Failed - l.get(-1)"); |
for (int i = 0; i < SIZE; ++i) { |
552 |
}catch(IndexOutOfBoundsException success) {} |
assertEquals(i, q.peekFirst()); |
553 |
|
assertEquals(i, q.pollFirst()); |
554 |
|
assertTrue(q.peekFirst() == null || |
555 |
|
!q.peekFirst().equals(i)); |
556 |
} |
} |
557 |
|
assertNull(q.peekFirst()); |
|
public void testget2() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
l.get(5); |
|
|
fail("get Failed - l.get(5) l.size(): " + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
558 |
} |
} |
559 |
|
|
560 |
public void testset1() { |
/** |
561 |
try { |
* peekLast returns next element, or null if empty |
562 |
LinkedList l = new LinkedList(); |
*/ |
563 |
l.add(new Object()); |
public void testPeekLast() { |
564 |
l.set(-1,new Object()); |
LinkedList q = populatedQueue(SIZE); |
565 |
fail("set failed - l.set(-1,...)" + l.size()); |
for (int i = SIZE-1; i >= 0; --i) { |
566 |
}catch(IndexOutOfBoundsException success){} |
assertEquals(i, q.peekLast()); |
567 |
|
assertEquals(i, q.pollLast()); |
568 |
|
assertTrue(q.peekLast() == null || |
569 |
|
!q.peekLast().equals(i)); |
570 |
} |
} |
571 |
|
assertNull(q.peekLast()); |
|
public void testset2() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
l.set(5,new Object()); |
|
|
fail("set failed = l.set(5,..) l.size():" + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
572 |
} |
} |
573 |
|
|
574 |
public void testadd1() { |
public void testFirstElement() { |
575 |
try { |
LinkedList q = populatedQueue(SIZE); |
576 |
LinkedList l = new LinkedList(); |
for (int i = 0; i < SIZE; ++i) { |
577 |
l.add(new Object()); |
assertEquals(i, q.getFirst()); |
578 |
l.add(-1,new Object()); |
assertEquals(i, q.pollFirst()); |
|
fail("Add Failed - l.add(-1) l.size(): " + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
579 |
} |
} |
|
|
|
|
public void add2(){ |
|
580 |
try { |
try { |
581 |
LinkedList l = new LinkedList(); |
q.getFirst(); |
582 |
l.add(new Object()); |
shouldThrow(); |
583 |
l.add(5,new Object()); |
} catch (NoSuchElementException success) {} |
|
fail("Add Failed l.add(f,...)"); |
|
|
}catch(IndexOutOfBoundsException success) {} |
|
584 |
} |
} |
585 |
|
|
586 |
public void testremove(){ |
/** |
587 |
try { |
* getLast returns next element, or throws NSEE if empty |
588 |
LinkedList l = new LinkedList(); |
*/ |
589 |
l.add(new Object()); |
public void testLastElement() { |
590 |
l.remove(-1); |
LinkedList q = populatedQueue(SIZE); |
591 |
fail("Remove Failed l.remove(-1); l.size():" + l.size()); |
for (int i = SIZE-1; i >= 0; --i) { |
592 |
}catch(IndexOutOfBoundsException success){} |
assertEquals(i, q.getLast()); |
593 |
|
assertEquals(i, q.pollLast()); |
594 |
} |
} |
|
|
|
|
public void testremove1(){ |
|
595 |
try { |
try { |
596 |
LinkedList l = new LinkedList(); |
q.getLast(); |
597 |
l.add(new Object()); |
shouldThrow(); |
598 |
l.remove(5); |
} catch (NoSuchElementException success) {} |
599 |
fail("Remove Failed l.remove(5); l.size():" + l.size()); |
assertNull(q.peekLast()); |
|
}catch(IndexOutOfBoundsException success){} |
|
600 |
} |
} |
601 |
|
|
602 |
|
/** |
603 |
public void testremove2(){ |
* removeFirstOccurrence(x) removes x and returns true if present |
604 |
try{ |
*/ |
605 |
LinkedList l = new LinkedList(); |
public void testRemoveFirstOccurrence() { |
606 |
l.remove(); |
LinkedList q = populatedQueue(SIZE); |
607 |
fail("LinkedList - Object remove() should throw a NoSuchElementException"); |
for (int i = 1; i < SIZE; i+=2) { |
608 |
}catch(NoSuchElementException e){} |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
609 |
} |
} |
610 |
|
for (int i = 0; i < SIZE; i+=2) { |
611 |
public void testlistIt1() { |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
612 |
try { |
assertFalse(q.removeFirstOccurrence(new Integer(i+1))); |
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
l.listIterator(5); |
|
|
fail("l.listIterator(5) l.size():" + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
613 |
} |
} |
614 |
|
assertTrue(q.isEmpty()); |
|
public void testlistIt2() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
l.listIterator(-1); |
|
|
fail("l.listIterator(-1) l.size():" + l.size()); |
|
|
}catch(IndexOutOfBoundsException success){} |
|
615 |
} |
} |
616 |
|
|
617 |
public void testlistIt3() { |
/** |
618 |
try { |
* removeLastOccurrence(x) removes x and returns true if present |
619 |
LinkedList l = new LinkedList(); |
*/ |
620 |
l.add(new Object()); |
public void testRemoveLastOccurrence() { |
621 |
ListIterator a = l.listIterator(0); |
LinkedList q = populatedQueue(SIZE); |
622 |
l.removeFirst(); |
for (int i = 1; i < SIZE; i+=2) { |
623 |
a.next(); |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
|
fail("l.listIterator(-1) l.size():" + l.size()); |
|
|
}catch(ConcurrentModificationException success){} |
|
624 |
} |
} |
625 |
|
for (int i = 0; i < SIZE; i+=2) { |
626 |
public void testToArray_BadArg() { |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
627 |
try { |
assertFalse(q.removeLastOccurrence(new Integer(i+1))); |
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Object()); |
|
|
Object o[] = l.toArray(null); |
|
|
fail("l.toArray(null) did not throw an exception"); |
|
|
}catch(NullPointerException success){} |
|
628 |
} |
} |
629 |
|
assertTrue(q.isEmpty()); |
|
public void testToArray1_BadArg() { |
|
|
try { |
|
|
LinkedList l = new LinkedList(); |
|
|
l.add(new Integer(5)); |
|
|
Object o[] = l.toArray(new String[10] ); |
|
|
fail("l.toArray(String[] f) did not throw an exception, an Integer was added"); |
|
|
}catch(ArrayStoreException success){} |
|
630 |
} |
} |
631 |
|
|
632 |
} |
} |