--- jsr166/src/test/tck/ConcurrentSkipListSubSetTest.java 2009/11/02 20:28:31 1.5 +++ jsr166/src/test/tck/ConcurrentSkipListSubSetTest.java 2014/12/31 19:05:42 1.26 @@ -1,54 +1,56 @@ /* * Written by Doug Lea with assistance from members of JCP JSR-166 * Expert Group and released to the public domain, as explained at - * http://creativecommons.org/licenses/publicdomain + * http://creativecommons.org/publicdomain/zero/1.0/ */ -import junit.framework.*; -import java.util.*; -import java.util.concurrent.*; -import java.io.*; +import java.util.Arrays; +import java.util.Comparator; +import java.util.Iterator; +import java.util.NavigableSet; +import java.util.SortedSet; +import java.util.concurrent.ConcurrentSkipListSet; + +import junit.framework.Test; +import junit.framework.TestSuite; public class ConcurrentSkipListSubSetTest extends JSR166TestCase { public static void main(String[] args) { - junit.textui.TestRunner.run (suite()); + junit.textui.TestRunner.run(suite()); } public static Test suite() { - return new TestSuite(ConcurrentSkipListSubSetTest.class); + return new TestSuite(ConcurrentSkipListSubSetTest.class); } static class MyReverseComparator implements Comparator { public int compare(Object x, Object y) { - int i = ((Integer)x).intValue(); - int j = ((Integer)y).intValue(); - if (i < j) return 1; - if (i > j) return -1; - return 0; + return ((Comparable)y).compareTo(x); } } /** - * Create a set of given size containing consecutive + * Returns a new set of given size containing consecutive * Integers 0 ... n. */ - private NavigableSet populatedSet(int n) { - ConcurrentSkipListSet q = new ConcurrentSkipListSet(); + private NavigableSet populatedSet(int n) { + ConcurrentSkipListSet q = + new ConcurrentSkipListSet(); assertTrue(q.isEmpty()); - for(int i = n-1; i >= 0; i-=2) - assertTrue(q.add(new Integer(i))); - for(int i = (n & 1); i < n; i+=2) - assertTrue(q.add(new Integer(i))); + for (int i = n-1; i >= 0; i-=2) + assertTrue(q.add(new Integer(i))); + for (int i = (n & 1); i < n; i+=2) + assertTrue(q.add(new Integer(i))); assertTrue(q.add(new Integer(-n))); assertTrue(q.add(new Integer(n))); NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false); assertFalse(s.isEmpty()); - assertEquals(n, s.size()); + assertEquals(n, s.size()); return s; } /** - * Create set of first 5 ints + * Returns a new set of first 5 ints. */ private NavigableSet set5() { ConcurrentSkipListSet q = new ConcurrentSkipListSet(); @@ -61,12 +63,12 @@ public class ConcurrentSkipListSubSetTes q.add(zero); q.add(seven); NavigableSet s = q.subSet(one, true, seven, false); - assertEquals(5, s.size()); + assertEquals(5, s.size()); return s; } /** - * Create set of first 5 negative ints + * Returns a new set of first 5 negative ints. */ private NavigableSet dset5() { ConcurrentSkipListSet q = new ConcurrentSkipListSet(); @@ -77,18 +79,18 @@ public class ConcurrentSkipListSubSetTes q.add(m4); q.add(m5); NavigableSet s = q.descendingSet(); - assertEquals(5, s.size()); + assertEquals(5, s.size()); return s; } private static NavigableSet set0() { - ConcurrentSkipListSet set = new ConcurrentSkipListSet(); + ConcurrentSkipListSet set = new ConcurrentSkipListSet(); assertTrue(set.isEmpty()); return set.tailSet(m1, true); } private static NavigableSet dset0() { - ConcurrentSkipListSet set = new ConcurrentSkipListSet(); + ConcurrentSkipListSet set = new ConcurrentSkipListSet(); assertTrue(set.isEmpty()); return set; } @@ -100,7 +102,6 @@ public class ConcurrentSkipListSubSetTes assertEquals(0, set0().size()); } - /** * isEmpty is true before add, false after */ @@ -134,11 +135,11 @@ public class ConcurrentSkipListSubSetTes * add(null) throws NPE */ public void testAddNull() { - try { + try { NavigableSet q = set0(); q.add(null); shouldThrow(); - } catch (NullPointerException success) { } + } catch (NullPointerException success) {} } /** @@ -168,11 +169,9 @@ public class ConcurrentSkipListSubSetTes q.add(new Object()); q.add(new Object()); shouldThrow(); - } - catch(ClassCastException success) {} + } catch (ClassCastException success) {} } - /** * addAll(null) throws NPE */ @@ -181,9 +180,9 @@ public class ConcurrentSkipListSubSetTes NavigableSet q = set0(); q.addAll(null); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } + /** * addAll of a collection with null elements throws NPE */ @@ -193,9 +192,9 @@ public class ConcurrentSkipListSubSetTes Integer[] ints = new Integer[SIZE]; q.addAll(Arrays.asList(ints)); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } + /** * addAll of a collection with any null elements throws NPE after * possibly adding some elements @@ -208,26 +207,22 @@ public class ConcurrentSkipListSubSetTes ints[i] = new Integer(i+SIZE); q.addAll(Arrays.asList(ints)); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } /** * Set contains all elements of successful addAll */ public void testAddAll5() { - try { - Integer[] empty = new Integer[0]; - Integer[] ints = new Integer[SIZE]; - for (int i = 0; i < SIZE; ++i) - ints[i] = new Integer(SIZE-1- i); - NavigableSet q = set0(); - assertFalse(q.addAll(Arrays.asList(empty))); - assertTrue(q.addAll(Arrays.asList(ints))); - for (int i = 0; i < SIZE; ++i) - assertEquals(new Integer(i), q.pollFirst()); - } - finally {} + Integer[] empty = new Integer[0]; + Integer[] ints = new Integer[SIZE]; + for (int i = 0; i < SIZE; ++i) + ints[i] = new Integer(SIZE-1- i); + NavigableSet q = set0(); + assertFalse(q.addAll(Arrays.asList(empty))); + assertTrue(q.addAll(Arrays.asList(ints))); + for (int i = 0; i < SIZE; ++i) + assertEquals(new Integer(i), q.pollFirst()); } /** @@ -236,9 +231,9 @@ public class ConcurrentSkipListSubSetTes public void testPoll() { NavigableSet q = populatedSet(SIZE); for (int i = 0; i < SIZE; ++i) { - assertEquals(i, ((Integer)q.pollFirst()).intValue()); + assertEquals(i, q.pollFirst()); } - assertNull(q.pollFirst()); + assertNull(q.pollFirst()); } /** @@ -247,11 +242,17 @@ public class ConcurrentSkipListSubSetTes public void testRemoveElement() { NavigableSet q = populatedSet(SIZE); for (int i = 1; i < SIZE; i+=2) { - assertTrue(q.remove(new Integer(i))); + assertTrue(q.contains(i)); + assertTrue(q.remove(i)); + assertFalse(q.contains(i)); + assertTrue(q.contains(i-1)); } for (int i = 0; i < SIZE; i+=2) { - assertTrue(q.remove(new Integer(i))); - assertFalse(q.remove(new Integer(i+1))); + assertTrue(q.contains(i)); + assertTrue(q.remove(i)); + assertFalse(q.contains(i)); + assertFalse(q.remove(i+1)); + assertFalse(q.contains(i+1)); } assertTrue(q.isEmpty()); } @@ -331,8 +332,6 @@ public class ConcurrentSkipListSubSetTes } } - - /** * lower returns preceding element */ @@ -349,7 +348,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.lower(zero); assertNull(e4); - } /** @@ -368,7 +366,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.higher(six); assertNull(e4); - } /** @@ -387,7 +384,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.floor(zero); assertNull(e4); - } /** @@ -406,30 +402,28 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.ceiling(six); assertNull(e4); - } /** - * toArray contains all elements + * toArray contains all elements in sorted order */ public void testToArray() { NavigableSet q = populatedSet(SIZE); - Object[] o = q.toArray(); - Arrays.sort(o); - for(int i = 0; i < o.length; i++) - assertEquals(o[i], q.pollFirst()); + Object[] o = q.toArray(); + for (int i = 0; i < o.length; i++) + assertSame(o[i], q.pollFirst()); } /** - * toArray(a) contains all elements + * toArray(a) contains all elements in sorted order */ public void testToArray2() { - NavigableSet q = populatedSet(SIZE); - Integer[] ints = new Integer[SIZE]; - ints = (Integer[])q.toArray(ints); - Arrays.sort(ints); - for(int i = 0; i < ints.length; i++) - assertEquals(ints[i], q.pollFirst()); + NavigableSet q = populatedSet(SIZE); + Integer[] ints = new Integer[SIZE]; + Integer[] array = q.toArray(ints); + assertSame(ints, array); + for (int i = 0; i < ints.length; i++) + assertSame(ints[i], q.pollFirst()); } /** @@ -438,8 +432,8 @@ public class ConcurrentSkipListSubSetTes public void testIterator() { NavigableSet q = populatedSet(SIZE); int i = 0; - Iterator it = q.iterator(); - while(it.hasNext()) { + Iterator it = q.iterator(); + while (it.hasNext()) { assertTrue(q.contains(it.next())); ++i; } @@ -452,18 +446,18 @@ public class ConcurrentSkipListSubSetTes public void testEmptyIterator() { NavigableSet q = set0(); int i = 0; - Iterator it = q.iterator(); - while(it.hasNext()) { + Iterator it = q.iterator(); + while (it.hasNext()) { assertTrue(q.contains(it.next())); ++i; } - assertEquals(i, 0); + assertEquals(0, i); } /** * iterator.remove removes current element */ - public void testIteratorRemove () { + public void testIteratorRemove() { final NavigableSet q = set0(); q.add(new Integer(2)); q.add(new Integer(1)); @@ -479,7 +473,6 @@ public class ConcurrentSkipListSubSetTes assertFalse(it.hasNext()); } - /** * toString contains toStrings of elements */ @@ -487,31 +480,26 @@ public class ConcurrentSkipListSubSetTes NavigableSet q = populatedSet(SIZE); String s = q.toString(); for (int i = 0; i < SIZE; ++i) { - assertTrue(s.indexOf(String.valueOf(i)) >= 0); + assertTrue(s.contains(String.valueOf(i))); } } /** * A deserialized serialized set has same elements */ - public void testSerialization() { - NavigableSet q = populatedSet(SIZE); - try { - ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); - ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); - out.writeObject(q); - out.close(); - - ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); - ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); - NavigableSet r = (NavigableSet)in.readObject(); - assertEquals(q.size(), r.size()); - while (!q.isEmpty()) - assertEquals(q.pollFirst(), r.pollFirst()); - } catch(Exception e){ - e.printStackTrace(); - unexpectedException(); + public void testSerialization() throws Exception { + NavigableSet x = populatedSet(SIZE); + NavigableSet y = serialClone(x); + + assertNotSame(y, x); + assertEquals(x.size(), y.size()); + assertEquals(x, y); + assertEquals(y, x); + while (!x.isEmpty()) { + assertFalse(y.isEmpty()); + assertEquals(x.pollFirst(), y.pollFirst()); } + assertTrue(y.isEmpty()); } /** @@ -652,11 +640,11 @@ public class ConcurrentSkipListSubSetTes * add(null) throws NPE */ public void testDescendingAddNull() { - try { + try { NavigableSet q = dset0(); q.add(null); shouldThrow(); - } catch (NullPointerException success) { } + } catch (NullPointerException success) {} } /** @@ -686,11 +674,9 @@ public class ConcurrentSkipListSubSetTes q.add(new Object()); q.add(new Object()); shouldThrow(); - } - catch(ClassCastException success) {} + } catch (ClassCastException success) {} } - /** * addAll(null) throws NPE */ @@ -699,9 +685,9 @@ public class ConcurrentSkipListSubSetTes NavigableSet q = dset0(); q.addAll(null); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } + /** * addAll of a collection with null elements throws NPE */ @@ -711,9 +697,9 @@ public class ConcurrentSkipListSubSetTes Integer[] ints = new Integer[SIZE]; q.addAll(Arrays.asList(ints)); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } + /** * addAll of a collection with any null elements throws NPE after * possibly adding some elements @@ -726,26 +712,22 @@ public class ConcurrentSkipListSubSetTes ints[i] = new Integer(i+SIZE); q.addAll(Arrays.asList(ints)); shouldThrow(); - } - catch (NullPointerException success) {} + } catch (NullPointerException success) {} } /** * Set contains all elements of successful addAll */ public void testDescendingAddAll5() { - try { - Integer[] empty = new Integer[0]; - Integer[] ints = new Integer[SIZE]; - for (int i = 0; i < SIZE; ++i) - ints[i] = new Integer(SIZE-1- i); - NavigableSet q = dset0(); - assertFalse(q.addAll(Arrays.asList(empty))); - assertTrue(q.addAll(Arrays.asList(ints))); - for (int i = 0; i < SIZE; ++i) - assertEquals(new Integer(i), q.pollFirst()); - } - finally {} + Integer[] empty = new Integer[0]; + Integer[] ints = new Integer[SIZE]; + for (int i = 0; i < SIZE; ++i) + ints[i] = new Integer(SIZE-1- i); + NavigableSet q = dset0(); + assertFalse(q.addAll(Arrays.asList(empty))); + assertTrue(q.addAll(Arrays.asList(ints))); + for (int i = 0; i < SIZE; ++i) + assertEquals(new Integer(i), q.pollFirst()); } /** @@ -754,9 +736,9 @@ public class ConcurrentSkipListSubSetTes public void testDescendingPoll() { NavigableSet q = populatedSet(SIZE); for (int i = 0; i < SIZE; ++i) { - assertEquals(i, ((Integer)q.pollFirst()).intValue()); + assertEquals(i, q.pollFirst()); } - assertNull(q.pollFirst()); + assertNull(q.pollFirst()); } /** @@ -849,8 +831,6 @@ public class ConcurrentSkipListSubSetTes } } - - /** * lower returns preceding element */ @@ -867,7 +847,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.lower(zero); assertNull(e4); - } /** @@ -886,7 +865,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.higher(m6); assertNull(e4); - } /** @@ -905,7 +883,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.floor(zero); assertNull(e4); - } /** @@ -924,7 +901,6 @@ public class ConcurrentSkipListSubSetTes Object e4 = q.ceiling(m6); assertNull(e4); - } /** @@ -932,10 +908,10 @@ public class ConcurrentSkipListSubSetTes */ public void testDescendingToArray() { NavigableSet q = populatedSet(SIZE); - Object[] o = q.toArray(); + Object[] o = q.toArray(); Arrays.sort(o); - for(int i = 0; i < o.length; i++) - assertEquals(o[i], q.pollFirst()); + for (int i = 0; i < o.length; i++) + assertEquals(o[i], q.pollFirst()); } /** @@ -943,10 +919,10 @@ public class ConcurrentSkipListSubSetTes */ public void testDescendingToArray2() { NavigableSet q = populatedSet(SIZE); - Integer[] ints = new Integer[SIZE]; - ints = (Integer[])q.toArray(ints); + Integer[] ints = new Integer[SIZE]; + assertSame(ints, q.toArray(ints)); Arrays.sort(ints); - for(int i = 0; i < ints.length; i++) + for (int i = 0; i < ints.length; i++) assertEquals(ints[i], q.pollFirst()); } @@ -956,8 +932,8 @@ public class ConcurrentSkipListSubSetTes public void testDescendingIterator() { NavigableSet q = populatedSet(SIZE); int i = 0; - Iterator it = q.iterator(); - while(it.hasNext()) { + Iterator it = q.iterator(); + while (it.hasNext()) { assertTrue(q.contains(it.next())); ++i; } @@ -970,18 +946,18 @@ public class ConcurrentSkipListSubSetTes public void testDescendingEmptyIterator() { NavigableSet q = dset0(); int i = 0; - Iterator it = q.iterator(); - while(it.hasNext()) { + Iterator it = q.iterator(); + while (it.hasNext()) { assertTrue(q.contains(it.next())); ++i; } - assertEquals(i, 0); + assertEquals(0, i); } /** * iterator.remove removes current element */ - public void testDescendingIteratorRemove () { + public void testDescendingIteratorRemove() { final NavigableSet q = dset0(); q.add(new Integer(2)); q.add(new Integer(1)); @@ -997,7 +973,6 @@ public class ConcurrentSkipListSubSetTes assertFalse(it.hasNext()); } - /** * toString contains toStrings of elements */ @@ -1005,31 +980,26 @@ public class ConcurrentSkipListSubSetTes NavigableSet q = populatedSet(SIZE); String s = q.toString(); for (int i = 0; i < SIZE; ++i) { - assertTrue(s.indexOf(String.valueOf(i)) >= 0); + assertTrue(s.contains(String.valueOf(i))); } } /** * A deserialized serialized set has same elements */ - public void testDescendingSerialization() { - NavigableSet q = populatedSet(SIZE); - try { - ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); - ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); - out.writeObject(q); - out.close(); - - ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); - ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); - NavigableSet r = (NavigableSet)in.readObject(); - assertEquals(q.size(), r.size()); - while (!q.isEmpty()) - assertEquals(q.pollFirst(), r.pollFirst()); - } catch(Exception e){ - e.printStackTrace(); - unexpectedException(); + public void testDescendingSerialization() throws Exception { + NavigableSet x = dset5(); + NavigableSet y = serialClone(x); + + assertNotSame(y, x); + assertEquals(x.size(), y.size()); + assertEquals(x, y); + assertEquals(y, x); + while (!x.isEmpty()) { + assertFalse(y.isEmpty()); + assertEquals(x.pollFirst(), y.pollFirst()); } + assertTrue(y.isEmpty()); } /**