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dl |
1.1 |
/* |
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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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*/ |
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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.io.*; |
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public class ConcurrentSkipListSetTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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jsr166 |
1.13 |
junit.textui.TestRunner.run(suite()); |
15 |
dl |
1.1 |
} |
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public static Test suite() { |
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jsr166 |
1.7 |
return new TestSuite(ConcurrentSkipListSetTest.class); |
18 |
dl |
1.1 |
} |
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jsr166 |
1.4 |
static class MyReverseComparator implements Comparator { |
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dl |
1.1 |
public int compare(Object x, Object y) { |
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jsr166 |
1.11 |
return ((Comparable)y).compareTo(x); |
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dl |
1.1 |
} |
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} |
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/** |
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* Create a set of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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private ConcurrentSkipListSet populatedSet(int n) { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.isEmpty()); |
33 |
jsr166 |
1.7 |
for (int i = n-1; i >= 0; i-=2) |
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assertTrue(q.add(new Integer(i))); |
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for (int i = (n & 1); i < n; i+=2) |
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assertTrue(q.add(new Integer(i))); |
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dl |
1.1 |
assertFalse(q.isEmpty()); |
38 |
jsr166 |
1.7 |
assertEquals(n, q.size()); |
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dl |
1.1 |
return q; |
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} |
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/** |
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* Create set of first 5 ints |
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*/ |
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private ConcurrentSkipListSet set5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.isEmpty()); |
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q.add(one); |
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q.add(two); |
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q.add(three); |
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q.add(four); |
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q.add(five); |
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jsr166 |
1.7 |
assertEquals(5, q.size()); |
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dl |
1.1 |
return q; |
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} |
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jsr166 |
1.4 |
|
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dl |
1.1 |
/** |
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* A new set has unbounded capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(0, new ConcurrentSkipListSet().size()); |
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} |
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/** |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
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try { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet((Collection)null); |
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shouldThrow(); |
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jsr166 |
1.8 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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shouldThrow(); |
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jsr166 |
1.8 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* Initializing from Collection with some null elements throws NPE |
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*/ |
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public void testConstructor5() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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shouldThrow(); |
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jsr166 |
1.8 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* Set contains all elements of collection used to initialize |
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*/ |
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public void testConstructor6() { |
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jsr166 |
1.8 |
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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.pollFirst()); |
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dl |
1.1 |
} |
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/** |
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* The comparator used in constructor is used |
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*/ |
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public void testConstructor7() { |
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jsr166 |
1.9 |
MyReverseComparator cmp = new MyReverseComparator(); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(cmp); |
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assertEquals(cmp, q.comparator()); |
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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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q.addAll(Arrays.asList(ints)); |
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for (int i = SIZE-1; i >= 0; --i) |
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assertEquals(ints[i], q.pollFirst()); |
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dl |
1.1 |
} |
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/** |
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* isEmpty is true before add, false after |
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*/ |
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public void testEmpty() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.isEmpty()); |
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q.add(new Integer(1)); |
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assertFalse(q.isEmpty()); |
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q.add(new Integer(2)); |
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q.pollFirst(); |
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q.pollFirst(); |
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assertTrue(q.isEmpty()); |
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} |
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/** |
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* size changes when elements added and removed |
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*/ |
142 |
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public void testSize() { |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
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q.pollFirst(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
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} |
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} |
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/** |
155 |
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* add(null) throws NPE |
156 |
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*/ |
157 |
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public void testAddNull() { |
158 |
jsr166 |
1.7 |
try { |
159 |
dl |
1.1 |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
160 |
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q.add(null); |
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shouldThrow(); |
162 |
jsr166 |
1.8 |
} catch (NullPointerException success) {} |
163 |
dl |
1.1 |
} |
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/** |
166 |
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* Add of comparable element succeeds |
167 |
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*/ |
168 |
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public void testAdd() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
170 |
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assertTrue(q.add(zero)); |
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assertTrue(q.add(one)); |
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} |
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/** |
175 |
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* Add of duplicate element fails |
176 |
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*/ |
177 |
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public void testAddDup() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.add(zero)); |
180 |
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assertFalse(q.add(zero)); |
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} |
182 |
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183 |
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/** |
184 |
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* Add of non-Comparable throws CCE |
185 |
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*/ |
186 |
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public void testAddNonComparable() { |
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try { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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q.add(new Object()); |
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q.add(new Object()); |
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q.add(new Object()); |
192 |
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shouldThrow(); |
193 |
jsr166 |
1.8 |
} catch (ClassCastException success) {} |
194 |
dl |
1.1 |
} |
195 |
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196 |
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/** |
197 |
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* addAll(null) throws NPE |
198 |
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*/ |
199 |
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public void testAddAll1() { |
200 |
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try { |
201 |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
202 |
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q.addAll(null); |
203 |
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shouldThrow(); |
204 |
jsr166 |
1.8 |
} catch (NullPointerException success) {} |
205 |
dl |
1.1 |
} |
206 |
jsr166 |
1.14 |
|
207 |
dl |
1.1 |
/** |
208 |
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* addAll of a collection with null elements throws NPE |
209 |
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*/ |
210 |
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public void testAddAll2() { |
211 |
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try { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
213 |
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Integer[] ints = new Integer[SIZE]; |
214 |
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q.addAll(Arrays.asList(ints)); |
215 |
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shouldThrow(); |
216 |
jsr166 |
1.8 |
} catch (NullPointerException success) {} |
217 |
dl |
1.1 |
} |
218 |
jsr166 |
1.14 |
|
219 |
dl |
1.1 |
/** |
220 |
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* addAll of a collection with any null elements throws NPE after |
221 |
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* possibly adding some elements |
222 |
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*/ |
223 |
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public void testAddAll3() { |
224 |
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try { |
225 |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
226 |
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Integer[] ints = new Integer[SIZE]; |
227 |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
229 |
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q.addAll(Arrays.asList(ints)); |
230 |
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shouldThrow(); |
231 |
jsr166 |
1.8 |
} catch (NullPointerException success) {} |
232 |
dl |
1.1 |
} |
233 |
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234 |
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/** |
235 |
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* Set contains all elements of successful addAll |
236 |
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*/ |
237 |
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public void testAddAll5() { |
238 |
jsr166 |
1.9 |
Integer[] empty = new Integer[0]; |
239 |
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Integer[] ints = new Integer[SIZE]; |
240 |
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for (int i = 0; i < SIZE; ++i) |
241 |
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ints[i] = new Integer(SIZE-1-i); |
242 |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
243 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
244 |
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assertTrue(q.addAll(Arrays.asList(ints))); |
245 |
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for (int i = 0; i < SIZE; ++i) |
246 |
jsr166 |
1.11 |
assertEquals(i, q.pollFirst()); |
247 |
dl |
1.1 |
} |
248 |
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249 |
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/** |
250 |
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* pollFirst succeeds unless empty |
251 |
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*/ |
252 |
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public void testPollFirst() { |
253 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
254 |
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for (int i = 0; i < SIZE; ++i) { |
255 |
jsr166 |
1.11 |
assertEquals(i, q.pollFirst()); |
256 |
dl |
1.1 |
} |
257 |
jsr166 |
1.7 |
assertNull(q.pollFirst()); |
258 |
dl |
1.1 |
} |
259 |
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260 |
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/** |
261 |
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* pollLast succeeds unless empty |
262 |
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*/ |
263 |
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public void testPollLast() { |
264 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
265 |
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for (int i = SIZE-1; i >= 0; --i) { |
266 |
jsr166 |
1.11 |
assertEquals(i, q.pollLast()); |
267 |
dl |
1.1 |
} |
268 |
jsr166 |
1.7 |
assertNull(q.pollFirst()); |
269 |
dl |
1.1 |
} |
270 |
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271 |
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272 |
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/** |
273 |
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* remove(x) removes x and returns true if present |
274 |
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*/ |
275 |
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public void testRemoveElement() { |
276 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
277 |
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for (int i = 1; i < SIZE; i+=2) { |
278 |
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assertTrue(q.remove(new Integer(i))); |
279 |
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} |
280 |
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for (int i = 0; i < SIZE; i+=2) { |
281 |
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assertTrue(q.remove(new Integer(i))); |
282 |
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assertFalse(q.remove(new Integer(i+1))); |
283 |
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} |
284 |
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assertTrue(q.isEmpty()); |
285 |
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} |
286 |
jsr166 |
1.4 |
|
287 |
dl |
1.1 |
/** |
288 |
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* contains(x) reports true when elements added but not yet removed |
289 |
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*/ |
290 |
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public void testContains() { |
291 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
292 |
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for (int i = 0; i < SIZE; ++i) { |
293 |
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assertTrue(q.contains(new Integer(i))); |
294 |
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q.pollFirst(); |
295 |
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assertFalse(q.contains(new Integer(i))); |
296 |
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} |
297 |
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} |
298 |
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299 |
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/** |
300 |
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* clear removes all elements |
301 |
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*/ |
302 |
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public void testClear() { |
303 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
304 |
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q.clear(); |
305 |
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assertTrue(q.isEmpty()); |
306 |
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assertEquals(0, q.size()); |
307 |
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q.add(new Integer(1)); |
308 |
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assertFalse(q.isEmpty()); |
309 |
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q.clear(); |
310 |
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assertTrue(q.isEmpty()); |
311 |
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} |
312 |
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313 |
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/** |
314 |
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* containsAll(c) is true when c contains a subset of elements |
315 |
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*/ |
316 |
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public void testContainsAll() { |
317 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
318 |
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ConcurrentSkipListSet p = new ConcurrentSkipListSet(); |
319 |
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for (int i = 0; i < SIZE; ++i) { |
320 |
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assertTrue(q.containsAll(p)); |
321 |
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assertFalse(p.containsAll(q)); |
322 |
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p.add(new Integer(i)); |
323 |
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} |
324 |
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assertTrue(p.containsAll(q)); |
325 |
|
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} |
326 |
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327 |
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/** |
328 |
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* retainAll(c) retains only those elements of c and reports true if changed |
329 |
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*/ |
330 |
|
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public void testRetainAll() { |
331 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
332 |
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ConcurrentSkipListSet p = populatedSet(SIZE); |
333 |
|
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for (int i = 0; i < SIZE; ++i) { |
334 |
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boolean changed = q.retainAll(p); |
335 |
|
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if (i == 0) |
336 |
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assertFalse(changed); |
337 |
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else |
338 |
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assertTrue(changed); |
339 |
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340 |
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assertTrue(q.containsAll(p)); |
341 |
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assertEquals(SIZE-i, q.size()); |
342 |
|
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p.pollFirst(); |
343 |
|
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} |
344 |
|
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} |
345 |
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|
346 |
|
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/** |
347 |
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* removeAll(c) removes only those elements of c and reports true if changed |
348 |
|
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*/ |
349 |
|
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public void testRemoveAll() { |
350 |
|
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for (int i = 1; i < SIZE; ++i) { |
351 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
352 |
|
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ConcurrentSkipListSet p = populatedSet(i); |
353 |
|
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assertTrue(q.removeAll(p)); |
354 |
|
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assertEquals(SIZE-i, q.size()); |
355 |
|
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for (int j = 0; j < i; ++j) { |
356 |
|
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Integer I = (Integer)(p.pollFirst()); |
357 |
|
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assertFalse(q.contains(I)); |
358 |
|
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} |
359 |
|
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} |
360 |
|
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} |
361 |
|
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|
362 |
jsr166 |
1.4 |
|
363 |
dl |
1.1 |
|
364 |
|
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/** |
365 |
|
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* lower returns preceding element |
366 |
|
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*/ |
367 |
|
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public void testLower() { |
368 |
|
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ConcurrentSkipListSet q = set5(); |
369 |
|
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Object e1 = q.lower(three); |
370 |
|
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assertEquals(two, e1); |
371 |
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372 |
|
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Object e2 = q.lower(six); |
373 |
|
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assertEquals(five, e2); |
374 |
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375 |
|
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Object e3 = q.lower(one); |
376 |
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assertNull(e3); |
377 |
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378 |
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Object e4 = q.lower(zero); |
379 |
|
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assertNull(e4); |
380 |
|
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} |
381 |
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382 |
|
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/** |
383 |
|
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* higher returns next element |
384 |
|
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*/ |
385 |
|
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public void testHigher() { |
386 |
|
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ConcurrentSkipListSet q = set5(); |
387 |
|
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Object e1 = q.higher(three); |
388 |
|
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assertEquals(four, e1); |
389 |
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390 |
|
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Object e2 = q.higher(zero); |
391 |
|
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assertEquals(one, e2); |
392 |
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393 |
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Object e3 = q.higher(five); |
394 |
|
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assertNull(e3); |
395 |
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396 |
|
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Object e4 = q.higher(six); |
397 |
|
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assertNull(e4); |
398 |
|
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} |
399 |
|
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|
400 |
|
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/** |
401 |
|
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* floor returns preceding element |
402 |
|
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*/ |
403 |
|
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public void testFloor() { |
404 |
|
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ConcurrentSkipListSet q = set5(); |
405 |
|
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Object e1 = q.floor(three); |
406 |
|
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assertEquals(three, e1); |
407 |
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|
408 |
|
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Object e2 = q.floor(six); |
409 |
|
|
assertEquals(five, e2); |
410 |
|
|
|
411 |
|
|
Object e3 = q.floor(one); |
412 |
|
|
assertEquals(one, e3); |
413 |
|
|
|
414 |
|
|
Object e4 = q.floor(zero); |
415 |
|
|
assertNull(e4); |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
/** |
419 |
|
|
* ceiling returns next element |
420 |
|
|
*/ |
421 |
|
|
public void testCeiling() { |
422 |
|
|
ConcurrentSkipListSet q = set5(); |
423 |
|
|
Object e1 = q.ceiling(three); |
424 |
|
|
assertEquals(three, e1); |
425 |
|
|
|
426 |
|
|
Object e2 = q.ceiling(zero); |
427 |
|
|
assertEquals(one, e2); |
428 |
|
|
|
429 |
|
|
Object e3 = q.ceiling(five); |
430 |
|
|
assertEquals(five, e3); |
431 |
|
|
|
432 |
|
|
Object e4 = q.ceiling(six); |
433 |
|
|
assertNull(e4); |
434 |
|
|
} |
435 |
|
|
|
436 |
|
|
/** |
437 |
jsr166 |
1.17 |
* toArray contains all elements in sorted order |
438 |
dl |
1.1 |
*/ |
439 |
|
|
public void testToArray() { |
440 |
|
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
441 |
jsr166 |
1.7 |
Object[] o = q.toArray(); |
442 |
|
|
for (int i = 0; i < o.length; i++) |
443 |
jsr166 |
1.17 |
assertSame(o[i], q.pollFirst()); |
444 |
dl |
1.1 |
} |
445 |
|
|
|
446 |
|
|
/** |
447 |
jsr166 |
1.17 |
* toArray(a) contains all elements in sorted order |
448 |
dl |
1.1 |
*/ |
449 |
|
|
public void testToArray2() { |
450 |
|
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
451 |
jsr166 |
1.7 |
Integer[] ints = new Integer[SIZE]; |
452 |
jsr166 |
1.17 |
assertSame(ints, q.toArray(ints)); |
453 |
jsr166 |
1.5 |
for (int i = 0; i < ints.length; i++) |
454 |
jsr166 |
1.17 |
assertSame(ints[i], q.pollFirst()); |
455 |
dl |
1.1 |
} |
456 |
jsr166 |
1.4 |
|
457 |
dl |
1.1 |
/** |
458 |
|
|
* iterator iterates through all elements |
459 |
|
|
*/ |
460 |
|
|
public void testIterator() { |
461 |
|
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
462 |
|
|
int i = 0; |
463 |
jsr166 |
1.7 |
Iterator it = q.iterator(); |
464 |
jsr166 |
1.5 |
while (it.hasNext()) { |
465 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
466 |
|
|
++i; |
467 |
|
|
} |
468 |
|
|
assertEquals(i, SIZE); |
469 |
|
|
} |
470 |
|
|
|
471 |
|
|
/** |
472 |
|
|
* iterator of empty set has no elements |
473 |
|
|
*/ |
474 |
|
|
public void testEmptyIterator() { |
475 |
|
|
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
476 |
|
|
int i = 0; |
477 |
jsr166 |
1.7 |
Iterator it = q.iterator(); |
478 |
jsr166 |
1.5 |
while (it.hasNext()) { |
479 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
480 |
|
|
++i; |
481 |
|
|
} |
482 |
|
|
assertEquals(i, 0); |
483 |
|
|
} |
484 |
|
|
|
485 |
|
|
/** |
486 |
|
|
* iterator.remove removes current element |
487 |
|
|
*/ |
488 |
jsr166 |
1.13 |
public void testIteratorRemove() { |
489 |
dl |
1.1 |
final ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
490 |
|
|
q.add(new Integer(2)); |
491 |
|
|
q.add(new Integer(1)); |
492 |
|
|
q.add(new Integer(3)); |
493 |
|
|
|
494 |
|
|
Iterator it = q.iterator(); |
495 |
|
|
it.next(); |
496 |
|
|
it.remove(); |
497 |
|
|
|
498 |
|
|
it = q.iterator(); |
499 |
|
|
assertEquals(it.next(), new Integer(2)); |
500 |
|
|
assertEquals(it.next(), new Integer(3)); |
501 |
|
|
assertFalse(it.hasNext()); |
502 |
|
|
} |
503 |
|
|
|
504 |
|
|
|
505 |
|
|
/** |
506 |
|
|
* toString contains toStrings of elements |
507 |
|
|
*/ |
508 |
|
|
public void testToString() { |
509 |
|
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
510 |
|
|
String s = q.toString(); |
511 |
|
|
for (int i = 0; i < SIZE; ++i) { |
512 |
|
|
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
513 |
|
|
} |
514 |
jsr166 |
1.4 |
} |
515 |
dl |
1.1 |
|
516 |
|
|
/** |
517 |
jsr166 |
1.4 |
* A deserialized serialized set has same elements |
518 |
dl |
1.1 |
*/ |
519 |
jsr166 |
1.8 |
public void testSerialization() throws Exception { |
520 |
dl |
1.1 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
521 |
jsr166 |
1.8 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
522 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
523 |
|
|
out.writeObject(q); |
524 |
|
|
out.close(); |
525 |
|
|
|
526 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
527 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
528 |
|
|
ConcurrentSkipListSet r = (ConcurrentSkipListSet)in.readObject(); |
529 |
|
|
assertEquals(q.size(), r.size()); |
530 |
|
|
while (!q.isEmpty()) |
531 |
|
|
assertEquals(q.pollFirst(), r.pollFirst()); |
532 |
dl |
1.1 |
} |
533 |
|
|
|
534 |
|
|
/** |
535 |
|
|
* subSet returns set with keys in requested range |
536 |
|
|
*/ |
537 |
|
|
public void testSubSetContents() { |
538 |
|
|
ConcurrentSkipListSet set = set5(); |
539 |
|
|
SortedSet sm = set.subSet(two, four); |
540 |
|
|
assertEquals(two, sm.first()); |
541 |
|
|
assertEquals(three, sm.last()); |
542 |
|
|
assertEquals(2, sm.size()); |
543 |
|
|
assertFalse(sm.contains(one)); |
544 |
|
|
assertTrue(sm.contains(two)); |
545 |
|
|
assertTrue(sm.contains(three)); |
546 |
|
|
assertFalse(sm.contains(four)); |
547 |
|
|
assertFalse(sm.contains(five)); |
548 |
|
|
Iterator i = sm.iterator(); |
549 |
|
|
Object k; |
550 |
|
|
k = (Integer)(i.next()); |
551 |
|
|
assertEquals(two, k); |
552 |
|
|
k = (Integer)(i.next()); |
553 |
|
|
assertEquals(three, k); |
554 |
|
|
assertFalse(i.hasNext()); |
555 |
|
|
Iterator j = sm.iterator(); |
556 |
|
|
j.next(); |
557 |
|
|
j.remove(); |
558 |
|
|
assertFalse(set.contains(two)); |
559 |
|
|
assertEquals(4, set.size()); |
560 |
|
|
assertEquals(1, sm.size()); |
561 |
|
|
assertEquals(three, sm.first()); |
562 |
|
|
assertEquals(three, sm.last()); |
563 |
|
|
assertTrue(sm.remove(three)); |
564 |
|
|
assertTrue(sm.isEmpty()); |
565 |
|
|
assertEquals(3, set.size()); |
566 |
|
|
} |
567 |
|
|
|
568 |
|
|
public void testSubSetContents2() { |
569 |
|
|
ConcurrentSkipListSet set = set5(); |
570 |
|
|
SortedSet sm = set.subSet(two, three); |
571 |
|
|
assertEquals(1, sm.size()); |
572 |
|
|
assertEquals(two, sm.first()); |
573 |
|
|
assertEquals(two, sm.last()); |
574 |
|
|
assertFalse(sm.contains(one)); |
575 |
|
|
assertTrue(sm.contains(two)); |
576 |
|
|
assertFalse(sm.contains(three)); |
577 |
|
|
assertFalse(sm.contains(four)); |
578 |
|
|
assertFalse(sm.contains(five)); |
579 |
|
|
Iterator i = sm.iterator(); |
580 |
|
|
Object k; |
581 |
|
|
k = (Integer)(i.next()); |
582 |
|
|
assertEquals(two, k); |
583 |
|
|
assertFalse(i.hasNext()); |
584 |
|
|
Iterator j = sm.iterator(); |
585 |
|
|
j.next(); |
586 |
|
|
j.remove(); |
587 |
|
|
assertFalse(set.contains(two)); |
588 |
|
|
assertEquals(4, set.size()); |
589 |
|
|
assertEquals(0, sm.size()); |
590 |
|
|
assertTrue(sm.isEmpty()); |
591 |
|
|
assertFalse(sm.remove(three)); |
592 |
|
|
assertEquals(4, set.size()); |
593 |
|
|
} |
594 |
|
|
|
595 |
|
|
/** |
596 |
|
|
* headSet returns set with keys in requested range |
597 |
|
|
*/ |
598 |
|
|
public void testHeadSetContents() { |
599 |
|
|
ConcurrentSkipListSet set = set5(); |
600 |
|
|
SortedSet sm = set.headSet(four); |
601 |
|
|
assertTrue(sm.contains(one)); |
602 |
|
|
assertTrue(sm.contains(two)); |
603 |
|
|
assertTrue(sm.contains(three)); |
604 |
|
|
assertFalse(sm.contains(four)); |
605 |
|
|
assertFalse(sm.contains(five)); |
606 |
|
|
Iterator i = sm.iterator(); |
607 |
|
|
Object k; |
608 |
|
|
k = (Integer)(i.next()); |
609 |
|
|
assertEquals(one, k); |
610 |
|
|
k = (Integer)(i.next()); |
611 |
|
|
assertEquals(two, k); |
612 |
|
|
k = (Integer)(i.next()); |
613 |
|
|
assertEquals(three, k); |
614 |
|
|
assertFalse(i.hasNext()); |
615 |
|
|
sm.clear(); |
616 |
|
|
assertTrue(sm.isEmpty()); |
617 |
|
|
assertEquals(2, set.size()); |
618 |
|
|
assertEquals(four, set.first()); |
619 |
|
|
} |
620 |
|
|
|
621 |
|
|
/** |
622 |
|
|
* tailSet returns set with keys in requested range |
623 |
|
|
*/ |
624 |
|
|
public void testTailSetContents() { |
625 |
|
|
ConcurrentSkipListSet set = set5(); |
626 |
|
|
SortedSet sm = set.tailSet(two); |
627 |
|
|
assertFalse(sm.contains(one)); |
628 |
|
|
assertTrue(sm.contains(two)); |
629 |
|
|
assertTrue(sm.contains(three)); |
630 |
|
|
assertTrue(sm.contains(four)); |
631 |
|
|
assertTrue(sm.contains(five)); |
632 |
|
|
Iterator i = sm.iterator(); |
633 |
|
|
Object k; |
634 |
|
|
k = (Integer)(i.next()); |
635 |
|
|
assertEquals(two, k); |
636 |
|
|
k = (Integer)(i.next()); |
637 |
|
|
assertEquals(three, k); |
638 |
|
|
k = (Integer)(i.next()); |
639 |
|
|
assertEquals(four, k); |
640 |
|
|
k = (Integer)(i.next()); |
641 |
|
|
assertEquals(five, k); |
642 |
|
|
assertFalse(i.hasNext()); |
643 |
|
|
|
644 |
|
|
SortedSet ssm = sm.tailSet(four); |
645 |
|
|
assertEquals(four, ssm.first()); |
646 |
|
|
assertEquals(five, ssm.last()); |
647 |
|
|
assertTrue(ssm.remove(four)); |
648 |
|
|
assertEquals(1, ssm.size()); |
649 |
|
|
assertEquals(3, sm.size()); |
650 |
|
|
assertEquals(4, set.size()); |
651 |
|
|
} |
652 |
|
|
|
653 |
dl |
1.2 |
Random rnd = new Random(666); |
654 |
|
|
BitSet bs; |
655 |
|
|
|
656 |
|
|
/** |
657 |
|
|
* Subsets of subsets subdivide correctly |
658 |
|
|
*/ |
659 |
jsr166 |
1.10 |
public void testRecursiveSubSets() throws Exception { |
660 |
jsr166 |
1.16 |
int setSize = expensiveTests ? 1000 : 100; |
661 |
jsr166 |
1.7 |
Class cl = ConcurrentSkipListSet.class; |
662 |
dl |
1.2 |
|
663 |
|
|
NavigableSet<Integer> set = newSet(cl); |
664 |
|
|
bs = new BitSet(setSize); |
665 |
|
|
|
666 |
|
|
populate(set, setSize); |
667 |
|
|
check(set, 0, setSize - 1, true); |
668 |
|
|
check(set.descendingSet(), 0, setSize - 1, false); |
669 |
|
|
|
670 |
|
|
mutateSet(set, 0, setSize - 1); |
671 |
|
|
check(set, 0, setSize - 1, true); |
672 |
|
|
check(set.descendingSet(), 0, setSize - 1, false); |
673 |
|
|
|
674 |
dl |
1.3 |
bashSubSet(set.subSet(0, true, setSize, false), |
675 |
dl |
1.2 |
0, setSize - 1, true); |
676 |
|
|
} |
677 |
|
|
|
678 |
jsr166 |
1.10 |
static NavigableSet<Integer> newSet(Class cl) throws Exception { |
679 |
|
|
NavigableSet<Integer> result = (NavigableSet<Integer>) cl.newInstance(); |
680 |
dl |
1.2 |
assertEquals(result.size(), 0); |
681 |
|
|
assertFalse(result.iterator().hasNext()); |
682 |
|
|
return result; |
683 |
|
|
} |
684 |
|
|
|
685 |
|
|
void populate(NavigableSet<Integer> set, int limit) { |
686 |
|
|
for (int i = 0, n = 2 * limit / 3; i < n; i++) { |
687 |
|
|
int element = rnd.nextInt(limit); |
688 |
|
|
put(set, element); |
689 |
|
|
} |
690 |
|
|
} |
691 |
|
|
|
692 |
|
|
void mutateSet(NavigableSet<Integer> set, int min, int max) { |
693 |
|
|
int size = set.size(); |
694 |
|
|
int rangeSize = max - min + 1; |
695 |
|
|
|
696 |
|
|
// Remove a bunch of entries directly |
697 |
|
|
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
698 |
|
|
remove(set, min - 5 + rnd.nextInt(rangeSize + 10)); |
699 |
|
|
} |
700 |
|
|
|
701 |
|
|
// Remove a bunch of entries with iterator |
702 |
jsr166 |
1.5 |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
703 |
dl |
1.2 |
if (rnd.nextBoolean()) { |
704 |
|
|
bs.clear(it.next()); |
705 |
|
|
it.remove(); |
706 |
|
|
} |
707 |
|
|
} |
708 |
|
|
|
709 |
|
|
// Add entries till we're back to original size |
710 |
|
|
while (set.size() < size) { |
711 |
|
|
int element = min + rnd.nextInt(rangeSize); |
712 |
|
|
assertTrue(element >= min && element<= max); |
713 |
|
|
put(set, element); |
714 |
|
|
} |
715 |
|
|
} |
716 |
|
|
|
717 |
|
|
void mutateSubSet(NavigableSet<Integer> set, int min, int max) { |
718 |
|
|
int size = set.size(); |
719 |
|
|
int rangeSize = max - min + 1; |
720 |
|
|
|
721 |
|
|
// Remove a bunch of entries directly |
722 |
|
|
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
723 |
|
|
remove(set, min - 5 + rnd.nextInt(rangeSize + 10)); |
724 |
|
|
} |
725 |
|
|
|
726 |
|
|
// Remove a bunch of entries with iterator |
727 |
jsr166 |
1.5 |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
728 |
dl |
1.2 |
if (rnd.nextBoolean()) { |
729 |
|
|
bs.clear(it.next()); |
730 |
|
|
it.remove(); |
731 |
|
|
} |
732 |
|
|
} |
733 |
|
|
|
734 |
|
|
// Add entries till we're back to original size |
735 |
|
|
while (set.size() < size) { |
736 |
|
|
int element = min - 5 + rnd.nextInt(rangeSize + 10); |
737 |
|
|
if (element >= min && element<= max) { |
738 |
|
|
put(set, element); |
739 |
|
|
} else { |
740 |
|
|
try { |
741 |
|
|
set.add(element); |
742 |
jsr166 |
1.10 |
shouldThrow(); |
743 |
|
|
} catch (IllegalArgumentException success) {} |
744 |
dl |
1.2 |
} |
745 |
|
|
} |
746 |
|
|
} |
747 |
|
|
|
748 |
|
|
void put(NavigableSet<Integer> set, int element) { |
749 |
|
|
if (set.add(element)) |
750 |
|
|
bs.set(element); |
751 |
|
|
} |
752 |
|
|
|
753 |
|
|
void remove(NavigableSet<Integer> set, int element) { |
754 |
|
|
if (set.remove(element)) |
755 |
|
|
bs.clear(element); |
756 |
|
|
} |
757 |
|
|
|
758 |
|
|
void bashSubSet(NavigableSet<Integer> set, |
759 |
|
|
int min, int max, boolean ascending) { |
760 |
|
|
check(set, min, max, ascending); |
761 |
|
|
check(set.descendingSet(), min, max, !ascending); |
762 |
|
|
|
763 |
|
|
mutateSubSet(set, min, max); |
764 |
|
|
check(set, min, max, ascending); |
765 |
|
|
check(set.descendingSet(), min, max, !ascending); |
766 |
|
|
|
767 |
|
|
// Recurse |
768 |
|
|
if (max - min < 2) |
769 |
|
|
return; |
770 |
|
|
int midPoint = (min + max) / 2; |
771 |
|
|
|
772 |
|
|
// headSet - pick direction and endpoint inclusion randomly |
773 |
|
|
boolean incl = rnd.nextBoolean(); |
774 |
dl |
1.3 |
NavigableSet<Integer> hm = set.headSet(midPoint, incl); |
775 |
dl |
1.2 |
if (ascending) { |
776 |
|
|
if (rnd.nextBoolean()) |
777 |
|
|
bashSubSet(hm, min, midPoint - (incl ? 0 : 1), true); |
778 |
|
|
else |
779 |
|
|
bashSubSet(hm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
780 |
|
|
false); |
781 |
|
|
} else { |
782 |
|
|
if (rnd.nextBoolean()) |
783 |
|
|
bashSubSet(hm, midPoint + (incl ? 0 : 1), max, false); |
784 |
|
|
else |
785 |
|
|
bashSubSet(hm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
786 |
|
|
true); |
787 |
|
|
} |
788 |
|
|
|
789 |
|
|
// tailSet - pick direction and endpoint inclusion randomly |
790 |
|
|
incl = rnd.nextBoolean(); |
791 |
dl |
1.3 |
NavigableSet<Integer> tm = set.tailSet(midPoint,incl); |
792 |
dl |
1.2 |
if (ascending) { |
793 |
|
|
if (rnd.nextBoolean()) |
794 |
|
|
bashSubSet(tm, midPoint + (incl ? 0 : 1), max, true); |
795 |
|
|
else |
796 |
|
|
bashSubSet(tm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
797 |
|
|
false); |
798 |
|
|
} else { |
799 |
|
|
if (rnd.nextBoolean()) { |
800 |
|
|
bashSubSet(tm, min, midPoint - (incl ? 0 : 1), false); |
801 |
|
|
} else { |
802 |
|
|
bashSubSet(tm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
803 |
|
|
true); |
804 |
|
|
} |
805 |
|
|
} |
806 |
|
|
|
807 |
|
|
// subSet - pick direction and endpoint inclusion randomly |
808 |
|
|
int rangeSize = max - min + 1; |
809 |
|
|
int[] endpoints = new int[2]; |
810 |
|
|
endpoints[0] = min + rnd.nextInt(rangeSize); |
811 |
|
|
endpoints[1] = min + rnd.nextInt(rangeSize); |
812 |
|
|
Arrays.sort(endpoints); |
813 |
|
|
boolean lowIncl = rnd.nextBoolean(); |
814 |
|
|
boolean highIncl = rnd.nextBoolean(); |
815 |
|
|
if (ascending) { |
816 |
dl |
1.3 |
NavigableSet<Integer> sm = set.subSet( |
817 |
dl |
1.2 |
endpoints[0], lowIncl, endpoints[1], highIncl); |
818 |
|
|
if (rnd.nextBoolean()) |
819 |
|
|
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
820 |
|
|
endpoints[1] - (highIncl ? 0 : 1), true); |
821 |
|
|
else |
822 |
|
|
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
823 |
|
|
endpoints[1] - (highIncl ? 0 : 1), false); |
824 |
|
|
} else { |
825 |
dl |
1.3 |
NavigableSet<Integer> sm = set.subSet( |
826 |
dl |
1.2 |
endpoints[1], highIncl, endpoints[0], lowIncl); |
827 |
|
|
if (rnd.nextBoolean()) |
828 |
|
|
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
829 |
|
|
endpoints[1] - (highIncl ? 0 : 1), false); |
830 |
|
|
else |
831 |
|
|
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
832 |
|
|
endpoints[1] - (highIncl ? 0 : 1), true); |
833 |
|
|
} |
834 |
|
|
} |
835 |
|
|
|
836 |
|
|
/** |
837 |
|
|
* min and max are both inclusive. If max < min, interval is empty. |
838 |
|
|
*/ |
839 |
|
|
void check(NavigableSet<Integer> set, |
840 |
|
|
final int min, final int max, final boolean ascending) { |
841 |
|
|
class ReferenceSet { |
842 |
|
|
int lower(int element) { |
843 |
|
|
return ascending ? |
844 |
|
|
lowerAscending(element) : higherAscending(element); |
845 |
|
|
} |
846 |
|
|
int floor(int element) { |
847 |
|
|
return ascending ? |
848 |
|
|
floorAscending(element) : ceilingAscending(element); |
849 |
|
|
} |
850 |
|
|
int ceiling(int element) { |
851 |
|
|
return ascending ? |
852 |
|
|
ceilingAscending(element) : floorAscending(element); |
853 |
|
|
} |
854 |
|
|
int higher(int element) { |
855 |
|
|
return ascending ? |
856 |
|
|
higherAscending(element) : lowerAscending(element); |
857 |
|
|
} |
858 |
|
|
int first() { |
859 |
|
|
return ascending ? firstAscending() : lastAscending(); |
860 |
|
|
} |
861 |
|
|
int last() { |
862 |
|
|
return ascending ? lastAscending() : firstAscending(); |
863 |
|
|
} |
864 |
|
|
int lowerAscending(int element) { |
865 |
|
|
return floorAscending(element - 1); |
866 |
|
|
} |
867 |
|
|
int floorAscending(int element) { |
868 |
|
|
if (element < min) |
869 |
|
|
return -1; |
870 |
|
|
else if (element > max) |
871 |
|
|
element = max; |
872 |
|
|
|
873 |
|
|
// BitSet should support this! Test would run much faster |
874 |
|
|
while (element >= min) { |
875 |
|
|
if (bs.get(element)) |
876 |
jsr166 |
1.15 |
return element; |
877 |
dl |
1.2 |
element--; |
878 |
|
|
} |
879 |
|
|
return -1; |
880 |
|
|
} |
881 |
|
|
int ceilingAscending(int element) { |
882 |
|
|
if (element < min) |
883 |
|
|
element = min; |
884 |
|
|
else if (element > max) |
885 |
|
|
return -1; |
886 |
|
|
int result = bs.nextSetBit(element); |
887 |
|
|
return result > max ? -1 : result; |
888 |
|
|
} |
889 |
|
|
int higherAscending(int element) { |
890 |
|
|
return ceilingAscending(element + 1); |
891 |
|
|
} |
892 |
|
|
private int firstAscending() { |
893 |
|
|
int result = ceilingAscending(min); |
894 |
|
|
return result > max ? -1 : result; |
895 |
|
|
} |
896 |
|
|
private int lastAscending() { |
897 |
|
|
int result = floorAscending(max); |
898 |
|
|
return result < min ? -1 : result; |
899 |
|
|
} |
900 |
|
|
} |
901 |
|
|
ReferenceSet rs = new ReferenceSet(); |
902 |
|
|
|
903 |
|
|
// Test contents using containsElement |
904 |
|
|
int size = 0; |
905 |
|
|
for (int i = min; i <= max; i++) { |
906 |
|
|
boolean bsContainsI = bs.get(i); |
907 |
|
|
assertEquals(bsContainsI, set.contains(i)); |
908 |
|
|
if (bsContainsI) |
909 |
|
|
size++; |
910 |
|
|
} |
911 |
|
|
assertEquals(set.size(), size); |
912 |
|
|
|
913 |
|
|
// Test contents using contains elementSet iterator |
914 |
|
|
int size2 = 0; |
915 |
|
|
int previousElement = -1; |
916 |
|
|
for (int element : set) { |
917 |
|
|
assertTrue(bs.get(element)); |
918 |
|
|
size2++; |
919 |
|
|
assertTrue(previousElement < 0 || (ascending ? |
920 |
|
|
element - previousElement > 0 : element - previousElement < 0)); |
921 |
|
|
previousElement = element; |
922 |
|
|
} |
923 |
|
|
assertEquals(size2, size); |
924 |
|
|
|
925 |
|
|
// Test navigation ops |
926 |
|
|
for (int element = min - 1; element <= max + 1; element++) { |
927 |
|
|
assertEq(set.lower(element), rs.lower(element)); |
928 |
|
|
assertEq(set.floor(element), rs.floor(element)); |
929 |
|
|
assertEq(set.higher(element), rs.higher(element)); |
930 |
|
|
assertEq(set.ceiling(element), rs.ceiling(element)); |
931 |
|
|
} |
932 |
|
|
|
933 |
|
|
// Test extrema |
934 |
|
|
if (set.size() != 0) { |
935 |
|
|
assertEq(set.first(), rs.first()); |
936 |
|
|
assertEq(set.last(), rs.last()); |
937 |
|
|
} else { |
938 |
|
|
assertEq(rs.first(), -1); |
939 |
|
|
assertEq(rs.last(), -1); |
940 |
|
|
try { |
941 |
|
|
set.first(); |
942 |
jsr166 |
1.10 |
shouldThrow(); |
943 |
|
|
} catch (NoSuchElementException success) {} |
944 |
dl |
1.2 |
try { |
945 |
|
|
set.last(); |
946 |
jsr166 |
1.10 |
shouldThrow(); |
947 |
|
|
} catch (NoSuchElementException success) {} |
948 |
dl |
1.2 |
} |
949 |
|
|
} |
950 |
|
|
|
951 |
|
|
static void assertEq(Integer i, int j) { |
952 |
|
|
if (i == null) |
953 |
|
|
assertEquals(j, -1); |
954 |
|
|
else |
955 |
|
|
assertEquals((int) i, j); |
956 |
|
|
} |
957 |
|
|
|
958 |
|
|
static boolean eq(Integer i, int j) { |
959 |
|
|
return i == null ? j == -1 : i == j; |
960 |
|
|
} |
961 |
|
|
|
962 |
dl |
1.1 |
} |