1 |
dl |
1.1 |
/* |
2 |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
jsr166 |
1.22 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
dl |
1.1 |
*/ |
6 |
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|
7 |
jsr166 |
1.30 |
import java.util.ArrayDeque; |
8 |
jsr166 |
1.24 |
import java.util.Arrays; |
9 |
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import java.util.Collection; |
10 |
jsr166 |
1.43 |
import java.util.Collections; |
11 |
jsr166 |
1.24 |
import java.util.Deque; |
12 |
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import java.util.Iterator; |
13 |
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import java.util.NoSuchElementException; |
14 |
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import java.util.Queue; |
15 |
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import java.util.Random; |
16 |
jsr166 |
1.42 |
import java.util.concurrent.ThreadLocalRandom; |
17 |
dl |
1.1 |
|
18 |
jsr166 |
1.30 |
import junit.framework.Test; |
19 |
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import junit.framework.TestSuite; |
20 |
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21 |
dl |
1.1 |
public class ArrayDequeTest extends JSR166TestCase { |
22 |
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public static void main(String[] args) { |
23 |
jsr166 |
1.34 |
main(suite(), args); |
24 |
dl |
1.1 |
} |
25 |
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26 |
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public static Test suite() { |
27 |
jsr166 |
1.40 |
class Implementation implements CollectionImplementation { |
28 |
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public Class<?> klazz() { return ArrayDeque.class; } |
29 |
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public Collection emptyCollection() { return new ArrayDeque(); } |
30 |
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public Object makeElement(int i) { return i; } |
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public boolean isConcurrent() { return false; } |
32 |
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public boolean permitsNulls() { return false; } |
33 |
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} |
34 |
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return newTestSuite(ArrayDequeTest.class, |
35 |
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CollectionTest.testSuite(new Implementation())); |
36 |
dl |
1.1 |
} |
37 |
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38 |
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/** |
39 |
jsr166 |
1.26 |
* Returns a new deque of given size containing consecutive |
40 |
jsr166 |
1.41 |
* Integers 0 ... n - 1. |
41 |
dl |
1.1 |
*/ |
42 |
jsr166 |
1.20 |
private ArrayDeque<Integer> populatedDeque(int n) { |
43 |
jsr166 |
1.42 |
// Randomize various aspects of memory layout, including |
44 |
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// filled-to-capacity and wraparound. |
45 |
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final ArrayDeque<Integer> q; |
46 |
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ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
47 |
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switch (rnd.nextInt(6)) { |
48 |
jsr166 |
1.43 |
case 0: q = new ArrayDeque<Integer>(); break; |
49 |
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case 1: q = new ArrayDeque<Integer>(0); break; |
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case 2: q = new ArrayDeque<Integer>(1); break; |
51 |
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case 3: q = new ArrayDeque<Integer>(Math.max(0, n - 1)); break; |
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case 4: q = new ArrayDeque<Integer>(n); break; |
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jsr166 |
1.42 |
case 5: q = new ArrayDeque<Integer>(n + 1); break; |
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default: throw new AssertionError(); |
55 |
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} |
56 |
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switch (rnd.nextInt(3)) { |
57 |
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case 0: |
58 |
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q.addFirst(42); |
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assertEquals((Integer) 42, q.removeLast()); |
60 |
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break; |
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case 1: |
62 |
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q.addLast(42); |
63 |
jsr166 |
1.43 |
assertEquals((Integer) 42, q.removeFirst()); |
64 |
jsr166 |
1.42 |
break; |
65 |
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case 2: /* do nothing */ break; |
66 |
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default: throw new AssertionError(); |
67 |
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} |
68 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
69 |
jsr166 |
1.42 |
if (rnd.nextBoolean()) |
70 |
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for (int i = 0; i < n; i++) |
71 |
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assertTrue(q.offerLast((Integer) i)); |
72 |
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else |
73 |
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for (int i = n; --i >= 0; ) |
74 |
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q.addFirst((Integer) i); |
75 |
jsr166 |
1.8 |
assertEquals(n, q.size()); |
76 |
jsr166 |
1.43 |
if (n > 0) { |
77 |
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assertFalse(q.isEmpty()); |
78 |
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assertEquals((Integer) 0, q.peekFirst()); |
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assertEquals((Integer) (n - 1), q.peekLast()); |
80 |
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} |
81 |
dl |
1.1 |
return q; |
82 |
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} |
83 |
jsr166 |
1.5 |
|
84 |
dl |
1.1 |
/** |
85 |
jsr166 |
1.16 |
* new deque is empty |
86 |
dl |
1.1 |
*/ |
87 |
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public void testConstructor1() { |
88 |
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assertEquals(0, new ArrayDeque().size()); |
89 |
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} |
90 |
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91 |
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/** |
92 |
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* Initializing from null Collection throws NPE |
93 |
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*/ |
94 |
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public void testConstructor3() { |
95 |
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try { |
96 |
jsr166 |
1.33 |
new ArrayDeque((Collection)null); |
97 |
dl |
1.1 |
shouldThrow(); |
98 |
jsr166 |
1.9 |
} catch (NullPointerException success) {} |
99 |
dl |
1.1 |
} |
100 |
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101 |
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/** |
102 |
jsr166 |
1.16 |
* Initializing from Collection of null elements throws NPE |
103 |
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*/ |
104 |
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public void testConstructor4() { |
105 |
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try { |
106 |
jsr166 |
1.35 |
new ArrayDeque(Arrays.asList(new Integer[SIZE])); |
107 |
jsr166 |
1.16 |
shouldThrow(); |
108 |
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} catch (NullPointerException success) {} |
109 |
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} |
110 |
dl |
1.1 |
|
111 |
jsr166 |
1.16 |
/** |
112 |
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* Initializing from Collection with some null elements throws NPE |
113 |
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*/ |
114 |
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public void testConstructor5() { |
115 |
jsr166 |
1.35 |
Integer[] ints = new Integer[SIZE]; |
116 |
jsr166 |
1.36 |
for (int i = 0; i < SIZE - 1; ++i) |
117 |
jsr166 |
1.35 |
ints[i] = new Integer(i); |
118 |
jsr166 |
1.16 |
try { |
119 |
jsr166 |
1.33 |
new ArrayDeque(Arrays.asList(ints)); |
120 |
jsr166 |
1.16 |
shouldThrow(); |
121 |
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} catch (NullPointerException success) {} |
122 |
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} |
123 |
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124 |
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/** |
125 |
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* Deque contains all elements of collection used to initialize |
126 |
dl |
1.1 |
*/ |
127 |
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public void testConstructor6() { |
128 |
jsr166 |
1.9 |
Integer[] ints = new Integer[SIZE]; |
129 |
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for (int i = 0; i < SIZE; ++i) |
130 |
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ints[i] = new Integer(i); |
131 |
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ArrayDeque q = new ArrayDeque(Arrays.asList(ints)); |
132 |
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for (int i = 0; i < SIZE; ++i) |
133 |
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assertEquals(ints[i], q.pollFirst()); |
134 |
dl |
1.1 |
} |
135 |
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136 |
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/** |
137 |
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* isEmpty is true before add, false after |
138 |
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*/ |
139 |
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public void testEmpty() { |
140 |
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ArrayDeque q = new ArrayDeque(); |
141 |
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assertTrue(q.isEmpty()); |
142 |
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q.add(new Integer(1)); |
143 |
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assertFalse(q.isEmpty()); |
144 |
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q.add(new Integer(2)); |
145 |
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q.removeFirst(); |
146 |
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q.removeFirst(); |
147 |
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assertTrue(q.isEmpty()); |
148 |
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} |
149 |
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150 |
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/** |
151 |
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* size changes when elements added and removed |
152 |
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*/ |
153 |
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public void testSize() { |
154 |
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ArrayDeque q = populatedDeque(SIZE); |
155 |
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for (int i = 0; i < SIZE; ++i) { |
156 |
jsr166 |
1.36 |
assertEquals(SIZE - i, q.size()); |
157 |
dl |
1.1 |
q.removeFirst(); |
158 |
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} |
159 |
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for (int i = 0; i < SIZE; ++i) { |
160 |
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assertEquals(i, q.size()); |
161 |
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q.add(new Integer(i)); |
162 |
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} |
163 |
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} |
164 |
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|
165 |
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/** |
166 |
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* push(null) throws NPE |
167 |
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*/ |
168 |
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public void testPushNull() { |
169 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(1); |
170 |
jsr166 |
1.8 |
try { |
171 |
dl |
1.1 |
q.push(null); |
172 |
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shouldThrow(); |
173 |
jsr166 |
1.9 |
} catch (NullPointerException success) {} |
174 |
dl |
1.1 |
} |
175 |
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|
176 |
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/** |
177 |
jsr166 |
1.16 |
* peekFirst() returns element inserted with push |
178 |
dl |
1.1 |
*/ |
179 |
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public void testPush() { |
180 |
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ArrayDeque q = populatedDeque(3); |
181 |
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q.pollLast(); |
182 |
jsr166 |
1.8 |
q.push(four); |
183 |
jsr166 |
1.12 |
assertSame(four, q.peekFirst()); |
184 |
jsr166 |
1.5 |
} |
185 |
dl |
1.1 |
|
186 |
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/** |
187 |
jsr166 |
1.16 |
* pop() removes next element, or throws NSEE if empty |
188 |
dl |
1.1 |
*/ |
189 |
|
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public void testPop() { |
190 |
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ArrayDeque q = populatedDeque(SIZE); |
191 |
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for (int i = 0; i < SIZE; ++i) { |
192 |
jsr166 |
1.12 |
assertEquals(i, q.pop()); |
193 |
dl |
1.1 |
} |
194 |
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try { |
195 |
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q.pop(); |
196 |
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shouldThrow(); |
197 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
198 |
dl |
1.1 |
} |
199 |
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|
200 |
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/** |
201 |
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* offer(null) throws NPE |
202 |
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*/ |
203 |
jsr166 |
1.16 |
public void testOfferNull() { |
204 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
205 |
jsr166 |
1.16 |
try { |
206 |
|
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q.offer(null); |
207 |
|
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shouldThrow(); |
208 |
|
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} catch (NullPointerException success) {} |
209 |
|
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} |
210 |
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|
211 |
|
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/** |
212 |
|
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* offerFirst(null) throws NPE |
213 |
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*/ |
214 |
dl |
1.1 |
public void testOfferFirstNull() { |
215 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
216 |
jsr166 |
1.8 |
try { |
217 |
dl |
1.1 |
q.offerFirst(null); |
218 |
|
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shouldThrow(); |
219 |
jsr166 |
1.9 |
} catch (NullPointerException success) {} |
220 |
dl |
1.1 |
} |
221 |
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|
222 |
|
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/** |
223 |
jsr166 |
1.16 |
* offerLast(null) throws NPE |
224 |
|
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*/ |
225 |
|
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public void testOfferLastNull() { |
226 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
227 |
jsr166 |
1.16 |
try { |
228 |
|
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q.offerLast(null); |
229 |
|
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shouldThrow(); |
230 |
|
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} catch (NullPointerException success) {} |
231 |
|
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} |
232 |
|
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|
233 |
|
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/** |
234 |
|
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* offer(x) succeeds |
235 |
|
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*/ |
236 |
|
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public void testOffer() { |
237 |
|
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ArrayDeque q = new ArrayDeque(); |
238 |
|
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assertTrue(q.offer(zero)); |
239 |
|
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assertTrue(q.offer(one)); |
240 |
|
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assertSame(zero, q.peekFirst()); |
241 |
|
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assertSame(one, q.peekLast()); |
242 |
|
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} |
243 |
|
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|
244 |
|
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/** |
245 |
|
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* offerFirst(x) succeeds |
246 |
dl |
1.1 |
*/ |
247 |
|
|
public void testOfferFirst() { |
248 |
|
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ArrayDeque q = new ArrayDeque(); |
249 |
jsr166 |
1.16 |
assertTrue(q.offerFirst(zero)); |
250 |
|
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assertTrue(q.offerFirst(one)); |
251 |
|
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assertSame(one, q.peekFirst()); |
252 |
|
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assertSame(zero, q.peekLast()); |
253 |
dl |
1.1 |
} |
254 |
|
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|
255 |
|
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/** |
256 |
jsr166 |
1.16 |
* offerLast(x) succeeds |
257 |
dl |
1.1 |
*/ |
258 |
|
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public void testOfferLast() { |
259 |
|
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ArrayDeque q = new ArrayDeque(); |
260 |
jsr166 |
1.16 |
assertTrue(q.offerLast(zero)); |
261 |
|
|
assertTrue(q.offerLast(one)); |
262 |
|
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assertSame(zero, q.peekFirst()); |
263 |
|
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assertSame(one, q.peekLast()); |
264 |
dl |
1.1 |
} |
265 |
|
|
|
266 |
|
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/** |
267 |
jsr166 |
1.16 |
* add(null) throws NPE |
268 |
|
|
*/ |
269 |
|
|
public void testAddNull() { |
270 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
271 |
jsr166 |
1.16 |
try { |
272 |
|
|
q.add(null); |
273 |
|
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shouldThrow(); |
274 |
|
|
} catch (NullPointerException success) {} |
275 |
|
|
} |
276 |
|
|
|
277 |
|
|
/** |
278 |
|
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* addFirst(null) throws NPE |
279 |
|
|
*/ |
280 |
|
|
public void testAddFirstNull() { |
281 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
282 |
jsr166 |
1.16 |
try { |
283 |
|
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q.addFirst(null); |
284 |
|
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shouldThrow(); |
285 |
|
|
} catch (NullPointerException success) {} |
286 |
|
|
} |
287 |
|
|
|
288 |
|
|
/** |
289 |
|
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* addLast(null) throws NPE |
290 |
|
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*/ |
291 |
|
|
public void testAddLastNull() { |
292 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
293 |
jsr166 |
1.16 |
try { |
294 |
|
|
q.addLast(null); |
295 |
|
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shouldThrow(); |
296 |
|
|
} catch (NullPointerException success) {} |
297 |
|
|
} |
298 |
|
|
|
299 |
|
|
/** |
300 |
|
|
* add(x) succeeds |
301 |
dl |
1.1 |
*/ |
302 |
|
|
public void testAdd() { |
303 |
|
|
ArrayDeque q = new ArrayDeque(); |
304 |
jsr166 |
1.16 |
assertTrue(q.add(zero)); |
305 |
|
|
assertTrue(q.add(one)); |
306 |
|
|
assertSame(zero, q.peekFirst()); |
307 |
|
|
assertSame(one, q.peekLast()); |
308 |
|
|
} |
309 |
|
|
|
310 |
|
|
/** |
311 |
|
|
* addFirst(x) succeeds |
312 |
|
|
*/ |
313 |
|
|
public void testAddFirst() { |
314 |
|
|
ArrayDeque q = new ArrayDeque(); |
315 |
|
|
q.addFirst(zero); |
316 |
|
|
q.addFirst(one); |
317 |
|
|
assertSame(one, q.peekFirst()); |
318 |
|
|
assertSame(zero, q.peekLast()); |
319 |
|
|
} |
320 |
|
|
|
321 |
|
|
/** |
322 |
|
|
* addLast(x) succeeds |
323 |
|
|
*/ |
324 |
|
|
public void testAddLast() { |
325 |
|
|
ArrayDeque q = new ArrayDeque(); |
326 |
|
|
q.addLast(zero); |
327 |
|
|
q.addLast(one); |
328 |
|
|
assertSame(zero, q.peekFirst()); |
329 |
|
|
assertSame(one, q.peekLast()); |
330 |
dl |
1.1 |
} |
331 |
|
|
|
332 |
|
|
/** |
333 |
|
|
* addAll(null) throws NPE |
334 |
|
|
*/ |
335 |
|
|
public void testAddAll1() { |
336 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
337 |
dl |
1.1 |
try { |
338 |
|
|
q.addAll(null); |
339 |
|
|
shouldThrow(); |
340 |
jsr166 |
1.9 |
} catch (NullPointerException success) {} |
341 |
dl |
1.1 |
} |
342 |
|
|
|
343 |
|
|
/** |
344 |
jsr166 |
1.16 |
* addAll of a collection with null elements throws NPE |
345 |
|
|
*/ |
346 |
|
|
public void testAddAll2() { |
347 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
348 |
jsr166 |
1.16 |
try { |
349 |
jsr166 |
1.35 |
q.addAll(Arrays.asList(new Integer[SIZE])); |
350 |
jsr166 |
1.16 |
shouldThrow(); |
351 |
|
|
} catch (NullPointerException success) {} |
352 |
|
|
} |
353 |
|
|
|
354 |
|
|
/** |
355 |
|
|
* addAll of a collection with any null elements throws NPE after |
356 |
|
|
* possibly adding some elements |
357 |
|
|
*/ |
358 |
|
|
public void testAddAll3() { |
359 |
jsr166 |
1.35 |
ArrayDeque q = new ArrayDeque(); |
360 |
|
|
Integer[] ints = new Integer[SIZE]; |
361 |
jsr166 |
1.36 |
for (int i = 0; i < SIZE - 1; ++i) |
362 |
jsr166 |
1.35 |
ints[i] = new Integer(i); |
363 |
jsr166 |
1.16 |
try { |
364 |
|
|
q.addAll(Arrays.asList(ints)); |
365 |
|
|
shouldThrow(); |
366 |
|
|
} catch (NullPointerException success) {} |
367 |
|
|
} |
368 |
|
|
|
369 |
|
|
/** |
370 |
|
|
* Deque contains all elements, in traversal order, of successful addAll |
371 |
dl |
1.1 |
*/ |
372 |
|
|
public void testAddAll5() { |
373 |
jsr166 |
1.10 |
Integer[] empty = new Integer[0]; |
374 |
|
|
Integer[] ints = new Integer[SIZE]; |
375 |
|
|
for (int i = 0; i < SIZE; ++i) |
376 |
|
|
ints[i] = new Integer(i); |
377 |
|
|
ArrayDeque q = new ArrayDeque(); |
378 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
379 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
380 |
|
|
for (int i = 0; i < SIZE; ++i) |
381 |
|
|
assertEquals(ints[i], q.pollFirst()); |
382 |
dl |
1.1 |
} |
383 |
|
|
|
384 |
|
|
/** |
385 |
jsr166 |
1.16 |
* pollFirst() succeeds unless empty |
386 |
dl |
1.1 |
*/ |
387 |
|
|
public void testPollFirst() { |
388 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
389 |
|
|
for (int i = 0; i < SIZE; ++i) { |
390 |
jsr166 |
1.12 |
assertEquals(i, q.pollFirst()); |
391 |
dl |
1.1 |
} |
392 |
jsr166 |
1.8 |
assertNull(q.pollFirst()); |
393 |
dl |
1.1 |
} |
394 |
|
|
|
395 |
|
|
/** |
396 |
jsr166 |
1.16 |
* pollLast() succeeds unless empty |
397 |
dl |
1.1 |
*/ |
398 |
|
|
public void testPollLast() { |
399 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
400 |
jsr166 |
1.36 |
for (int i = SIZE - 1; i >= 0; --i) { |
401 |
jsr166 |
1.12 |
assertEquals(i, q.pollLast()); |
402 |
dl |
1.1 |
} |
403 |
jsr166 |
1.8 |
assertNull(q.pollLast()); |
404 |
dl |
1.1 |
} |
405 |
|
|
|
406 |
|
|
/** |
407 |
jsr166 |
1.16 |
* poll() succeeds unless empty |
408 |
dl |
1.1 |
*/ |
409 |
|
|
public void testPoll() { |
410 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
411 |
|
|
for (int i = 0; i < SIZE; ++i) { |
412 |
jsr166 |
1.12 |
assertEquals(i, q.poll()); |
413 |
dl |
1.1 |
} |
414 |
jsr166 |
1.8 |
assertNull(q.poll()); |
415 |
dl |
1.1 |
} |
416 |
|
|
|
417 |
|
|
/** |
418 |
jsr166 |
1.16 |
* remove() removes next element, or throws NSEE if empty |
419 |
dl |
1.1 |
*/ |
420 |
|
|
public void testRemove() { |
421 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
422 |
|
|
for (int i = 0; i < SIZE; ++i) { |
423 |
jsr166 |
1.12 |
assertEquals(i, q.remove()); |
424 |
dl |
1.1 |
} |
425 |
|
|
try { |
426 |
|
|
q.remove(); |
427 |
|
|
shouldThrow(); |
428 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
429 |
dl |
1.1 |
} |
430 |
|
|
|
431 |
|
|
/** |
432 |
jsr166 |
1.16 |
* remove(x) removes x and returns true if present |
433 |
|
|
*/ |
434 |
|
|
public void testRemoveElement() { |
435 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
436 |
jsr166 |
1.31 |
for (int i = 1; i < SIZE; i += 2) { |
437 |
jsr166 |
1.21 |
assertTrue(q.contains(i)); |
438 |
|
|
assertTrue(q.remove(i)); |
439 |
|
|
assertFalse(q.contains(i)); |
440 |
jsr166 |
1.38 |
assertTrue(q.contains(i - 1)); |
441 |
jsr166 |
1.16 |
} |
442 |
jsr166 |
1.31 |
for (int i = 0; i < SIZE; i += 2) { |
443 |
jsr166 |
1.21 |
assertTrue(q.contains(i)); |
444 |
|
|
assertTrue(q.remove(i)); |
445 |
|
|
assertFalse(q.contains(i)); |
446 |
jsr166 |
1.38 |
assertFalse(q.remove(i + 1)); |
447 |
|
|
assertFalse(q.contains(i + 1)); |
448 |
jsr166 |
1.16 |
} |
449 |
|
|
assertTrue(q.isEmpty()); |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
/** |
453 |
|
|
* peekFirst() returns next element, or null if empty |
454 |
dl |
1.1 |
*/ |
455 |
|
|
public void testPeekFirst() { |
456 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
457 |
|
|
for (int i = 0; i < SIZE; ++i) { |
458 |
jsr166 |
1.12 |
assertEquals(i, q.peekFirst()); |
459 |
|
|
assertEquals(i, q.pollFirst()); |
460 |
dl |
1.1 |
assertTrue(q.peekFirst() == null || |
461 |
jsr166 |
1.12 |
!q.peekFirst().equals(i)); |
462 |
dl |
1.1 |
} |
463 |
jsr166 |
1.8 |
assertNull(q.peekFirst()); |
464 |
dl |
1.1 |
} |
465 |
|
|
|
466 |
|
|
/** |
467 |
jsr166 |
1.16 |
* peek() returns next element, or null if empty |
468 |
dl |
1.1 |
*/ |
469 |
|
|
public void testPeek() { |
470 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
471 |
|
|
for (int i = 0; i < SIZE; ++i) { |
472 |
jsr166 |
1.12 |
assertEquals(i, q.peek()); |
473 |
|
|
assertEquals(i, q.poll()); |
474 |
dl |
1.1 |
assertTrue(q.peek() == null || |
475 |
jsr166 |
1.12 |
!q.peek().equals(i)); |
476 |
dl |
1.1 |
} |
477 |
jsr166 |
1.8 |
assertNull(q.peek()); |
478 |
dl |
1.1 |
} |
479 |
|
|
|
480 |
|
|
/** |
481 |
jsr166 |
1.16 |
* peekLast() returns next element, or null if empty |
482 |
dl |
1.1 |
*/ |
483 |
|
|
public void testPeekLast() { |
484 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
485 |
jsr166 |
1.36 |
for (int i = SIZE - 1; i >= 0; --i) { |
486 |
jsr166 |
1.12 |
assertEquals(i, q.peekLast()); |
487 |
|
|
assertEquals(i, q.pollLast()); |
488 |
dl |
1.1 |
assertTrue(q.peekLast() == null || |
489 |
jsr166 |
1.12 |
!q.peekLast().equals(i)); |
490 |
dl |
1.1 |
} |
491 |
jsr166 |
1.8 |
assertNull(q.peekLast()); |
492 |
dl |
1.1 |
} |
493 |
|
|
|
494 |
|
|
/** |
495 |
jsr166 |
1.16 |
* element() returns first element, or throws NSEE if empty |
496 |
|
|
*/ |
497 |
|
|
public void testElement() { |
498 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
499 |
|
|
for (int i = 0; i < SIZE; ++i) { |
500 |
|
|
assertEquals(i, q.element()); |
501 |
|
|
assertEquals(i, q.poll()); |
502 |
|
|
} |
503 |
|
|
try { |
504 |
|
|
q.element(); |
505 |
|
|
shouldThrow(); |
506 |
|
|
} catch (NoSuchElementException success) {} |
507 |
|
|
} |
508 |
|
|
|
509 |
|
|
/** |
510 |
|
|
* getFirst() returns first element, or throws NSEE if empty |
511 |
dl |
1.1 |
*/ |
512 |
|
|
public void testFirstElement() { |
513 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
514 |
|
|
for (int i = 0; i < SIZE; ++i) { |
515 |
jsr166 |
1.12 |
assertEquals(i, q.getFirst()); |
516 |
|
|
assertEquals(i, q.pollFirst()); |
517 |
dl |
1.1 |
} |
518 |
|
|
try { |
519 |
|
|
q.getFirst(); |
520 |
|
|
shouldThrow(); |
521 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
522 |
dl |
1.1 |
} |
523 |
|
|
|
524 |
|
|
/** |
525 |
jsr166 |
1.16 |
* getLast() returns last element, or throws NSEE if empty |
526 |
dl |
1.1 |
*/ |
527 |
|
|
public void testLastElement() { |
528 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
529 |
jsr166 |
1.36 |
for (int i = SIZE - 1; i >= 0; --i) { |
530 |
jsr166 |
1.12 |
assertEquals(i, q.getLast()); |
531 |
|
|
assertEquals(i, q.pollLast()); |
532 |
dl |
1.1 |
} |
533 |
|
|
try { |
534 |
|
|
q.getLast(); |
535 |
|
|
shouldThrow(); |
536 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
537 |
jsr166 |
1.8 |
assertNull(q.peekLast()); |
538 |
dl |
1.1 |
} |
539 |
|
|
|
540 |
|
|
/** |
541 |
jsr166 |
1.16 |
* removeFirst() removes first element, or throws NSEE if empty |
542 |
dl |
1.1 |
*/ |
543 |
|
|
public void testRemoveFirst() { |
544 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
545 |
|
|
for (int i = 0; i < SIZE; ++i) { |
546 |
jsr166 |
1.12 |
assertEquals(i, q.removeFirst()); |
547 |
dl |
1.1 |
} |
548 |
|
|
try { |
549 |
|
|
q.removeFirst(); |
550 |
|
|
shouldThrow(); |
551 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
552 |
jsr166 |
1.16 |
assertNull(q.peekFirst()); |
553 |
|
|
} |
554 |
|
|
|
555 |
|
|
/** |
556 |
|
|
* removeLast() removes last element, or throws NSEE if empty |
557 |
|
|
*/ |
558 |
|
|
public void testRemoveLast() { |
559 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
560 |
|
|
for (int i = SIZE - 1; i >= 0; --i) { |
561 |
|
|
assertEquals(i, q.removeLast()); |
562 |
|
|
} |
563 |
|
|
try { |
564 |
|
|
q.removeLast(); |
565 |
|
|
shouldThrow(); |
566 |
|
|
} catch (NoSuchElementException success) {} |
567 |
|
|
assertNull(q.peekLast()); |
568 |
dl |
1.1 |
} |
569 |
|
|
|
570 |
|
|
/** |
571 |
|
|
* removeFirstOccurrence(x) removes x and returns true if present |
572 |
|
|
*/ |
573 |
|
|
public void testRemoveFirstOccurrence() { |
574 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
575 |
jsr166 |
1.39 |
assertFalse(q.removeFirstOccurrence(null)); |
576 |
jsr166 |
1.31 |
for (int i = 1; i < SIZE; i += 2) { |
577 |
dl |
1.1 |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
578 |
|
|
} |
579 |
jsr166 |
1.31 |
for (int i = 0; i < SIZE; i += 2) { |
580 |
dl |
1.1 |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
581 |
jsr166 |
1.38 |
assertFalse(q.removeFirstOccurrence(new Integer(i + 1))); |
582 |
dl |
1.1 |
} |
583 |
|
|
assertTrue(q.isEmpty()); |
584 |
jsr166 |
1.39 |
assertFalse(q.removeFirstOccurrence(null)); |
585 |
|
|
assertFalse(q.removeFirstOccurrence(42)); |
586 |
|
|
q = new ArrayDeque(); |
587 |
|
|
assertFalse(q.removeFirstOccurrence(null)); |
588 |
|
|
assertFalse(q.removeFirstOccurrence(42)); |
589 |
dl |
1.1 |
} |
590 |
|
|
|
591 |
|
|
/** |
592 |
|
|
* removeLastOccurrence(x) removes x and returns true if present |
593 |
|
|
*/ |
594 |
|
|
public void testRemoveLastOccurrence() { |
595 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
596 |
jsr166 |
1.39 |
assertFalse(q.removeLastOccurrence(null)); |
597 |
jsr166 |
1.31 |
for (int i = 1; i < SIZE; i += 2) { |
598 |
dl |
1.1 |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
599 |
|
|
} |
600 |
jsr166 |
1.31 |
for (int i = 0; i < SIZE; i += 2) { |
601 |
dl |
1.1 |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
602 |
jsr166 |
1.38 |
assertFalse(q.removeLastOccurrence(new Integer(i + 1))); |
603 |
dl |
1.1 |
} |
604 |
|
|
assertTrue(q.isEmpty()); |
605 |
jsr166 |
1.39 |
assertFalse(q.removeLastOccurrence(null)); |
606 |
|
|
assertFalse(q.removeLastOccurrence(42)); |
607 |
|
|
q = new ArrayDeque(); |
608 |
|
|
assertFalse(q.removeLastOccurrence(null)); |
609 |
|
|
assertFalse(q.removeLastOccurrence(42)); |
610 |
dl |
1.1 |
} |
611 |
|
|
|
612 |
|
|
/** |
613 |
|
|
* contains(x) reports true when elements added but not yet removed |
614 |
|
|
*/ |
615 |
|
|
public void testContains() { |
616 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
617 |
|
|
for (int i = 0; i < SIZE; ++i) { |
618 |
|
|
assertTrue(q.contains(new Integer(i))); |
619 |
jsr166 |
1.12 |
assertEquals(i, q.pollFirst()); |
620 |
dl |
1.1 |
assertFalse(q.contains(new Integer(i))); |
621 |
|
|
} |
622 |
|
|
} |
623 |
|
|
|
624 |
|
|
/** |
625 |
|
|
* clear removes all elements |
626 |
|
|
*/ |
627 |
|
|
public void testClear() { |
628 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
629 |
|
|
q.clear(); |
630 |
|
|
assertTrue(q.isEmpty()); |
631 |
|
|
assertEquals(0, q.size()); |
632 |
jsr166 |
1.12 |
assertTrue(q.add(new Integer(1))); |
633 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
634 |
|
|
q.clear(); |
635 |
|
|
assertTrue(q.isEmpty()); |
636 |
|
|
} |
637 |
|
|
|
638 |
|
|
/** |
639 |
|
|
* containsAll(c) is true when c contains a subset of elements |
640 |
|
|
*/ |
641 |
|
|
public void testContainsAll() { |
642 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
643 |
|
|
ArrayDeque p = new ArrayDeque(); |
644 |
|
|
for (int i = 0; i < SIZE; ++i) { |
645 |
|
|
assertTrue(q.containsAll(p)); |
646 |
|
|
assertFalse(p.containsAll(q)); |
647 |
jsr166 |
1.12 |
assertTrue(p.add(new Integer(i))); |
648 |
dl |
1.1 |
} |
649 |
|
|
assertTrue(p.containsAll(q)); |
650 |
|
|
} |
651 |
|
|
|
652 |
|
|
/** |
653 |
|
|
* retainAll(c) retains only those elements of c and reports true if changed |
654 |
|
|
*/ |
655 |
|
|
public void testRetainAll() { |
656 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
657 |
|
|
ArrayDeque p = populatedDeque(SIZE); |
658 |
|
|
for (int i = 0; i < SIZE; ++i) { |
659 |
|
|
boolean changed = q.retainAll(p); |
660 |
jsr166 |
1.12 |
assertEquals(changed, (i > 0)); |
661 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
662 |
jsr166 |
1.36 |
assertEquals(SIZE - i, q.size()); |
663 |
dl |
1.1 |
p.removeFirst(); |
664 |
|
|
} |
665 |
|
|
} |
666 |
|
|
|
667 |
|
|
/** |
668 |
|
|
* removeAll(c) removes only those elements of c and reports true if changed |
669 |
|
|
*/ |
670 |
|
|
public void testRemoveAll() { |
671 |
|
|
for (int i = 1; i < SIZE; ++i) { |
672 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
673 |
|
|
ArrayDeque p = populatedDeque(i); |
674 |
|
|
assertTrue(q.removeAll(p)); |
675 |
jsr166 |
1.36 |
assertEquals(SIZE - i, q.size()); |
676 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
677 |
jsr166 |
1.12 |
assertFalse(q.contains(p.removeFirst())); |
678 |
dl |
1.1 |
} |
679 |
|
|
} |
680 |
|
|
} |
681 |
|
|
|
682 |
jsr166 |
1.27 |
void checkToArray(ArrayDeque q) { |
683 |
|
|
int size = q.size(); |
684 |
|
|
Object[] o = q.toArray(); |
685 |
|
|
assertEquals(size, o.length); |
686 |
|
|
Iterator it = q.iterator(); |
687 |
|
|
for (int i = 0; i < size; i++) { |
688 |
|
|
Integer x = (Integer) it.next(); |
689 |
|
|
assertEquals((Integer)o[0] + i, (int) x); |
690 |
|
|
assertSame(o[i], x); |
691 |
|
|
} |
692 |
|
|
} |
693 |
|
|
|
694 |
dl |
1.1 |
/** |
695 |
jsr166 |
1.19 |
* toArray() contains all elements in FIFO order |
696 |
dl |
1.1 |
*/ |
697 |
|
|
public void testToArray() { |
698 |
jsr166 |
1.27 |
ArrayDeque q = new ArrayDeque(); |
699 |
|
|
for (int i = 0; i < SIZE; i++) { |
700 |
|
|
checkToArray(q); |
701 |
|
|
q.addLast(i); |
702 |
|
|
} |
703 |
|
|
// Provoke wraparound |
704 |
|
|
for (int i = 0; i < SIZE; i++) { |
705 |
|
|
checkToArray(q); |
706 |
|
|
assertEquals(i, q.poll()); |
707 |
jsr166 |
1.36 |
q.addLast(SIZE + i); |
708 |
jsr166 |
1.27 |
} |
709 |
|
|
for (int i = 0; i < SIZE; i++) { |
710 |
|
|
checkToArray(q); |
711 |
jsr166 |
1.36 |
assertEquals(SIZE + i, q.poll()); |
712 |
jsr166 |
1.27 |
} |
713 |
|
|
} |
714 |
|
|
|
715 |
|
|
void checkToArray2(ArrayDeque q) { |
716 |
|
|
int size = q.size(); |
717 |
jsr166 |
1.37 |
Integer[] a1 = (size == 0) ? null : new Integer[size - 1]; |
718 |
jsr166 |
1.27 |
Integer[] a2 = new Integer[size]; |
719 |
jsr166 |
1.37 |
Integer[] a3 = new Integer[size + 2]; |
720 |
jsr166 |
1.27 |
if (size > 0) Arrays.fill(a1, 42); |
721 |
|
|
Arrays.fill(a2, 42); |
722 |
|
|
Arrays.fill(a3, 42); |
723 |
jsr166 |
1.37 |
Integer[] b1 = (size == 0) ? null : (Integer[]) q.toArray(a1); |
724 |
jsr166 |
1.27 |
Integer[] b2 = (Integer[]) q.toArray(a2); |
725 |
|
|
Integer[] b3 = (Integer[]) q.toArray(a3); |
726 |
|
|
assertSame(a2, b2); |
727 |
|
|
assertSame(a3, b3); |
728 |
|
|
Iterator it = q.iterator(); |
729 |
|
|
for (int i = 0; i < size; i++) { |
730 |
|
|
Integer x = (Integer) it.next(); |
731 |
|
|
assertSame(b1[i], x); |
732 |
|
|
assertEquals(b1[0] + i, (int) x); |
733 |
|
|
assertSame(b2[i], x); |
734 |
|
|
assertSame(b3[i], x); |
735 |
|
|
} |
736 |
|
|
assertNull(a3[size]); |
737 |
jsr166 |
1.37 |
assertEquals(42, (int) a3[size + 1]); |
738 |
jsr166 |
1.27 |
if (size > 0) { |
739 |
|
|
assertNotSame(a1, b1); |
740 |
|
|
assertEquals(size, b1.length); |
741 |
|
|
for (int i = 0; i < a1.length; i++) { |
742 |
|
|
assertEquals(42, (int) a1[i]); |
743 |
|
|
} |
744 |
|
|
} |
745 |
dl |
1.1 |
} |
746 |
|
|
|
747 |
|
|
/** |
748 |
jsr166 |
1.19 |
* toArray(a) contains all elements in FIFO order |
749 |
dl |
1.1 |
*/ |
750 |
|
|
public void testToArray2() { |
751 |
jsr166 |
1.27 |
ArrayDeque q = new ArrayDeque(); |
752 |
|
|
for (int i = 0; i < SIZE; i++) { |
753 |
|
|
checkToArray2(q); |
754 |
|
|
q.addLast(i); |
755 |
|
|
} |
756 |
|
|
// Provoke wraparound |
757 |
|
|
for (int i = 0; i < SIZE; i++) { |
758 |
|
|
checkToArray2(q); |
759 |
|
|
assertEquals(i, q.poll()); |
760 |
jsr166 |
1.36 |
q.addLast(SIZE + i); |
761 |
jsr166 |
1.27 |
} |
762 |
|
|
for (int i = 0; i < SIZE; i++) { |
763 |
|
|
checkToArray2(q); |
764 |
jsr166 |
1.36 |
assertEquals(SIZE + i, q.poll()); |
765 |
jsr166 |
1.27 |
} |
766 |
dl |
1.1 |
} |
767 |
|
|
|
768 |
|
|
/** |
769 |
jsr166 |
1.18 |
* toArray(null) throws NullPointerException |
770 |
dl |
1.1 |
*/ |
771 |
jsr166 |
1.18 |
public void testToArray_NullArg() { |
772 |
jsr166 |
1.12 |
ArrayDeque l = new ArrayDeque(); |
773 |
|
|
l.add(new Object()); |
774 |
jsr166 |
1.8 |
try { |
775 |
jsr166 |
1.18 |
l.toArray(null); |
776 |
jsr166 |
1.8 |
shouldThrow(); |
777 |
|
|
} catch (NullPointerException success) {} |
778 |
dl |
1.1 |
} |
779 |
|
|
|
780 |
|
|
/** |
781 |
jsr166 |
1.17 |
* toArray(incompatible array type) throws ArrayStoreException |
782 |
dl |
1.1 |
*/ |
783 |
|
|
public void testToArray1_BadArg() { |
784 |
jsr166 |
1.12 |
ArrayDeque l = new ArrayDeque(); |
785 |
|
|
l.add(new Integer(5)); |
786 |
jsr166 |
1.8 |
try { |
787 |
jsr166 |
1.17 |
l.toArray(new String[10]); |
788 |
jsr166 |
1.8 |
shouldThrow(); |
789 |
jsr166 |
1.9 |
} catch (ArrayStoreException success) {} |
790 |
dl |
1.1 |
} |
791 |
jsr166 |
1.5 |
|
792 |
dl |
1.1 |
/** |
793 |
jsr166 |
1.16 |
* Iterator iterates through all elements |
794 |
dl |
1.1 |
*/ |
795 |
|
|
public void testIterator() { |
796 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
797 |
jsr166 |
1.8 |
Iterator it = q.iterator(); |
798 |
jsr166 |
1.32 |
int i; |
799 |
|
|
for (i = 0; it.hasNext(); i++) |
800 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
801 |
|
|
assertEquals(i, SIZE); |
802 |
jsr166 |
1.32 |
assertIteratorExhausted(it); |
803 |
|
|
} |
804 |
|
|
|
805 |
|
|
/** |
806 |
|
|
* iterator of empty collection has no elements |
807 |
|
|
*/ |
808 |
|
|
public void testEmptyIterator() { |
809 |
|
|
Deque c = new ArrayDeque(); |
810 |
|
|
assertIteratorExhausted(c.iterator()); |
811 |
|
|
assertIteratorExhausted(c.descendingIterator()); |
812 |
dl |
1.1 |
} |
813 |
|
|
|
814 |
|
|
/** |
815 |
jsr166 |
1.16 |
* Iterator ordering is FIFO |
816 |
dl |
1.1 |
*/ |
817 |
|
|
public void testIteratorOrdering() { |
818 |
|
|
final ArrayDeque q = new ArrayDeque(); |
819 |
jsr166 |
1.16 |
q.add(one); |
820 |
|
|
q.add(two); |
821 |
|
|
q.add(three); |
822 |
dl |
1.1 |
int k = 0; |
823 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
824 |
jsr166 |
1.12 |
assertEquals(++k, it.next()); |
825 |
dl |
1.1 |
} |
826 |
|
|
|
827 |
|
|
assertEquals(3, k); |
828 |
|
|
} |
829 |
|
|
|
830 |
|
|
/** |
831 |
jsr166 |
1.16 |
* iterator.remove() removes current element |
832 |
dl |
1.1 |
*/ |
833 |
jsr166 |
1.16 |
public void testIteratorRemove() { |
834 |
dl |
1.1 |
final ArrayDeque q = new ArrayDeque(); |
835 |
dl |
1.4 |
final Random rng = new Random(); |
836 |
dl |
1.3 |
for (int iters = 0; iters < 100; ++iters) { |
837 |
dl |
1.4 |
int max = rng.nextInt(5) + 2; |
838 |
jsr166 |
1.38 |
int split = rng.nextInt(max - 1) + 1; |
839 |
dl |
1.4 |
for (int j = 1; j <= max; ++j) |
840 |
|
|
q.add(new Integer(j)); |
841 |
dl |
1.3 |
Iterator it = q.iterator(); |
842 |
jsr166 |
1.5 |
for (int j = 1; j <= split; ++j) |
843 |
dl |
1.4 |
assertEquals(it.next(), new Integer(j)); |
844 |
dl |
1.3 |
it.remove(); |
845 |
jsr166 |
1.38 |
assertEquals(it.next(), new Integer(split + 1)); |
846 |
jsr166 |
1.5 |
for (int j = 1; j <= split; ++j) |
847 |
dl |
1.4 |
q.remove(new Integer(j)); |
848 |
dl |
1.3 |
it = q.iterator(); |
849 |
jsr166 |
1.38 |
for (int j = split + 1; j <= max; ++j) { |
850 |
dl |
1.4 |
assertEquals(it.next(), new Integer(j)); |
851 |
|
|
it.remove(); |
852 |
|
|
} |
853 |
dl |
1.3 |
assertFalse(it.hasNext()); |
854 |
dl |
1.4 |
assertTrue(q.isEmpty()); |
855 |
dl |
1.3 |
} |
856 |
dl |
1.1 |
} |
857 |
|
|
|
858 |
dl |
1.2 |
/** |
859 |
jsr166 |
1.16 |
* Descending iterator iterates through all elements |
860 |
dl |
1.2 |
*/ |
861 |
|
|
public void testDescendingIterator() { |
862 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
863 |
|
|
int i = 0; |
864 |
jsr166 |
1.8 |
Iterator it = q.descendingIterator(); |
865 |
jsr166 |
1.6 |
while (it.hasNext()) { |
866 |
dl |
1.2 |
assertTrue(q.contains(it.next())); |
867 |
|
|
++i; |
868 |
|
|
} |
869 |
|
|
assertEquals(i, SIZE); |
870 |
|
|
assertFalse(it.hasNext()); |
871 |
|
|
try { |
872 |
|
|
it.next(); |
873 |
jsr166 |
1.11 |
shouldThrow(); |
874 |
jsr166 |
1.9 |
} catch (NoSuchElementException success) {} |
875 |
dl |
1.2 |
} |
876 |
|
|
|
877 |
|
|
/** |
878 |
jsr166 |
1.16 |
* Descending iterator ordering is reverse FIFO |
879 |
dl |
1.2 |
*/ |
880 |
|
|
public void testDescendingIteratorOrdering() { |
881 |
|
|
final ArrayDeque q = new ArrayDeque(); |
882 |
dl |
1.3 |
for (int iters = 0; iters < 100; ++iters) { |
883 |
|
|
q.add(new Integer(3)); |
884 |
|
|
q.add(new Integer(2)); |
885 |
|
|
q.add(new Integer(1)); |
886 |
|
|
int k = 0; |
887 |
|
|
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
888 |
jsr166 |
1.12 |
assertEquals(++k, it.next()); |
889 |
dl |
1.3 |
} |
890 |
jsr166 |
1.5 |
|
891 |
dl |
1.3 |
assertEquals(3, k); |
892 |
|
|
q.remove(); |
893 |
|
|
q.remove(); |
894 |
|
|
q.remove(); |
895 |
dl |
1.2 |
} |
896 |
|
|
} |
897 |
|
|
|
898 |
|
|
/** |
899 |
jsr166 |
1.16 |
* descendingIterator.remove() removes current element |
900 |
dl |
1.2 |
*/ |
901 |
jsr166 |
1.16 |
public void testDescendingIteratorRemove() { |
902 |
dl |
1.2 |
final ArrayDeque q = new ArrayDeque(); |
903 |
dl |
1.4 |
final Random rng = new Random(); |
904 |
dl |
1.3 |
for (int iters = 0; iters < 100; ++iters) { |
905 |
dl |
1.4 |
int max = rng.nextInt(5) + 2; |
906 |
jsr166 |
1.38 |
int split = rng.nextInt(max - 1) + 1; |
907 |
dl |
1.4 |
for (int j = max; j >= 1; --j) |
908 |
|
|
q.add(new Integer(j)); |
909 |
dl |
1.3 |
Iterator it = q.descendingIterator(); |
910 |
jsr166 |
1.5 |
for (int j = 1; j <= split; ++j) |
911 |
dl |
1.4 |
assertEquals(it.next(), new Integer(j)); |
912 |
dl |
1.3 |
it.remove(); |
913 |
jsr166 |
1.38 |
assertEquals(it.next(), new Integer(split + 1)); |
914 |
jsr166 |
1.5 |
for (int j = 1; j <= split; ++j) |
915 |
dl |
1.4 |
q.remove(new Integer(j)); |
916 |
dl |
1.3 |
it = q.descendingIterator(); |
917 |
jsr166 |
1.38 |
for (int j = split + 1; j <= max; ++j) { |
918 |
dl |
1.4 |
assertEquals(it.next(), new Integer(j)); |
919 |
|
|
it.remove(); |
920 |
|
|
} |
921 |
dl |
1.3 |
assertFalse(it.hasNext()); |
922 |
dl |
1.4 |
assertTrue(q.isEmpty()); |
923 |
dl |
1.3 |
} |
924 |
dl |
1.2 |
} |
925 |
|
|
|
926 |
dl |
1.1 |
/** |
927 |
jsr166 |
1.16 |
* toString() contains toStrings of elements |
928 |
dl |
1.1 |
*/ |
929 |
|
|
public void testToString() { |
930 |
|
|
ArrayDeque q = populatedDeque(SIZE); |
931 |
|
|
String s = q.toString(); |
932 |
|
|
for (int i = 0; i < SIZE; ++i) { |
933 |
jsr166 |
1.23 |
assertTrue(s.contains(String.valueOf(i))); |
934 |
dl |
1.1 |
} |
935 |
jsr166 |
1.5 |
} |
936 |
dl |
1.1 |
|
937 |
|
|
/** |
938 |
jsr166 |
1.16 |
* A deserialized serialized deque has same elements in same order |
939 |
dl |
1.1 |
*/ |
940 |
jsr166 |
1.16 |
public void testSerialization() throws Exception { |
941 |
jsr166 |
1.24 |
Queue x = populatedDeque(SIZE); |
942 |
|
|
Queue y = serialClone(x); |
943 |
|
|
|
944 |
jsr166 |
1.28 |
assertNotSame(y, x); |
945 |
jsr166 |
1.24 |
assertEquals(x.size(), y.size()); |
946 |
|
|
assertEquals(x.toString(), y.toString()); |
947 |
|
|
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
948 |
|
|
while (!x.isEmpty()) { |
949 |
|
|
assertFalse(y.isEmpty()); |
950 |
|
|
assertEquals(x.remove(), y.remove()); |
951 |
|
|
} |
952 |
|
|
assertTrue(y.isEmpty()); |
953 |
jsr166 |
1.5 |
} |
954 |
dl |
1.1 |
|
955 |
jsr166 |
1.29 |
/** |
956 |
jsr166 |
1.43 |
* A cloned deque has same elements in same order |
957 |
|
|
*/ |
958 |
|
|
public void testClone() throws Exception { |
959 |
|
|
ArrayDeque<Integer> x = populatedDeque(SIZE); |
960 |
|
|
ArrayDeque<Integer> y = x.clone(); |
961 |
|
|
|
962 |
|
|
assertNotSame(y, x); |
963 |
|
|
assertEquals(x.size(), y.size()); |
964 |
|
|
assertEquals(x.toString(), y.toString()); |
965 |
|
|
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
966 |
|
|
while (!x.isEmpty()) { |
967 |
|
|
assertFalse(y.isEmpty()); |
968 |
|
|
assertEquals(x.remove(), y.remove()); |
969 |
|
|
} |
970 |
|
|
assertTrue(y.isEmpty()); |
971 |
|
|
} |
972 |
|
|
|
973 |
|
|
/** |
974 |
jsr166 |
1.29 |
* remove(null), contains(null) always return false |
975 |
|
|
*/ |
976 |
|
|
public void testNeverContainsNull() { |
977 |
|
|
Deque<?>[] qs = { |
978 |
|
|
new ArrayDeque<Object>(), |
979 |
|
|
populatedDeque(2), |
980 |
|
|
}; |
981 |
|
|
|
982 |
|
|
for (Deque<?> q : qs) { |
983 |
|
|
assertFalse(q.contains(null)); |
984 |
|
|
assertFalse(q.remove(null)); |
985 |
|
|
assertFalse(q.removeFirstOccurrence(null)); |
986 |
|
|
assertFalse(q.removeLastOccurrence(null)); |
987 |
|
|
} |
988 |
|
|
} |
989 |
|
|
|
990 |
jsr166 |
1.43 |
/** |
991 |
|
|
* Handle capacities near Integer.MAX_VALUE. |
992 |
|
|
* ant -Dvmoptions=-Xmx24g -Djsr166.expensiveTests=true -Djsr166.tckTestClass=ArrayDequeTest -Djsr166.methodFilter=testHuge tck |
993 |
|
|
*/ |
994 |
|
|
public void testHuge() { |
995 |
|
|
if (! (testImplementationDetails |
996 |
|
|
&& expensiveTests |
997 |
|
|
&& Runtime.getRuntime().freeMemory() > 21_000_000_000L)) |
998 |
|
|
return; |
999 |
|
|
int maxSize = Integer.MAX_VALUE - 8; |
1000 |
|
|
ArrayDeque<Integer> q; |
1001 |
|
|
|
1002 |
|
|
q = new ArrayDeque<>(maxSize); |
1003 |
|
|
|
1004 |
|
|
assertThrows(OutOfMemoryError.class, |
1005 |
|
|
() -> new ArrayDeque<>(Integer.MAX_VALUE)); |
1006 |
|
|
|
1007 |
|
|
q = populatedDeque(0); |
1008 |
|
|
q.addAll(Collections.nCopies(maxSize - 2, (Integer) 42)); |
1009 |
|
|
assertEquals((Integer) 42, q.peekFirst()); |
1010 |
|
|
assertEquals((Integer) 42, q.peekLast()); |
1011 |
|
|
assertEquals(maxSize - 2, q.size()); |
1012 |
|
|
q.addFirst((Integer) 0); |
1013 |
|
|
q.addLast((Integer) 1); |
1014 |
|
|
assertEquals((Integer) 0, q.peekFirst()); |
1015 |
|
|
assertEquals((Integer) 1, q.peekLast()); |
1016 |
|
|
assertEquals(maxSize, q.size()); |
1017 |
|
|
} |
1018 |
|
|
|
1019 |
dl |
1.1 |
} |