--- jsr166/src/test/tck/ConcurrentSkipListSetTest.java	2014/12/31 20:09:08	1.32
+++ jsr166/src/test/tck/ConcurrentSkipListSetTest.java	2017/03/11 18:20:46	1.46
@@ -21,7 +21,7 @@ import junit.framework.TestSuite;
 
 public class ConcurrentSkipListSetTest extends JSR166TestCase {
     public static void main(String[] args) {
-        junit.textui.TestRunner.run(suite());
+        main(suite(), args);
     }
     public static Test suite() {
         return new TestSuite(ConcurrentSkipListSetTest.class);
@@ -35,13 +35,13 @@ public class ConcurrentSkipListSetTest e
 
     /**
      * Returns a new set of given size containing consecutive
-     * Integers 0 ... n.
+     * Integers 0 ... n - 1.
      */
-    private ConcurrentSkipListSet<Integer> populatedSet(int n) {
+    private static ConcurrentSkipListSet<Integer> populatedSet(int n) {
         ConcurrentSkipListSet<Integer> q =
             new ConcurrentSkipListSet<Integer>();
         assertTrue(q.isEmpty());
-        for (int i = n-1; i >= 0; i -= 2)
+        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)));
@@ -53,7 +53,7 @@ public class ConcurrentSkipListSetTest e
     /**
      * Returns a new set of first 5 ints.
      */
-    private ConcurrentSkipListSet set5() {
+    private static ConcurrentSkipListSet set5() {
         ConcurrentSkipListSet q = new ConcurrentSkipListSet();
         assertTrue(q.isEmpty());
         q.add(one);
@@ -77,7 +77,7 @@ public class ConcurrentSkipListSetTest e
      */
     public void testConstructor3() {
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet((Collection)null);
+            new ConcurrentSkipListSet((Collection)null);
             shouldThrow();
         } catch (NullPointerException success) {}
     }
@@ -87,8 +87,7 @@ public class ConcurrentSkipListSetTest e
      */
     public void testConstructor4() {
         try {
-            Integer[] ints = new Integer[SIZE];
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints));
+            new ConcurrentSkipListSet(Arrays.asList(new Integer[SIZE]));
             shouldThrow();
         } catch (NullPointerException success) {}
     }
@@ -97,11 +96,11 @@ public class ConcurrentSkipListSetTest e
      * Initializing from Collection with some null elements throws NPE
      */
     public void testConstructor5() {
+        Integer[] ints = new Integer[SIZE];
+        for (int i = 0; i < SIZE - 1; ++i)
+            ints[i] = new Integer(i);
         try {
-            Integer[] ints = new Integer[SIZE];
-            for (int i = 0; i < SIZE-1; ++i)
-                ints[i] = new Integer(i);
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints));
+            new ConcurrentSkipListSet(Arrays.asList(ints));
             shouldThrow();
         } catch (NullPointerException success) {}
     }
@@ -129,7 +128,7 @@ public class ConcurrentSkipListSetTest e
         for (int i = 0; i < SIZE; ++i)
             ints[i] = new Integer(i);
         q.addAll(Arrays.asList(ints));
-        for (int i = SIZE-1; i >= 0; --i)
+        for (int i = SIZE - 1; i >= 0; --i)
             assertEquals(ints[i], q.pollFirst());
     }
 
@@ -153,7 +152,7 @@ public class ConcurrentSkipListSetTest e
     public void testSize() {
         ConcurrentSkipListSet q = populatedSet(SIZE);
         for (int i = 0; i < SIZE; ++i) {
-            assertEquals(SIZE-i, q.size());
+            assertEquals(SIZE - i, q.size());
             q.pollFirst();
         }
         for (int i = 0; i < SIZE; ++i) {
@@ -166,8 +165,8 @@ public class ConcurrentSkipListSetTest e
      * add(null) throws NPE
      */
     public void testAddNull() {
+        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet();
             q.add(null);
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -195,21 +194,27 @@ public class ConcurrentSkipListSetTest e
      * Add of non-Comparable throws CCE
      */
     public void testAddNonComparable() {
+        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet();
-            q.add(new Object());
             q.add(new Object());
             q.add(new Object());
             shouldThrow();
-        } catch (ClassCastException success) {}
+        } catch (ClassCastException success) {
+            assertTrue(q.size() < 2);
+            for (int i = 0, size = q.size(); i < size; i++)
+                assertTrue(q.pollFirst().getClass() == Object.class);
+            assertNull(q.pollFirst());
+            assertTrue(q.isEmpty());
+            assertEquals(0, q.size());
+        }
     }
 
     /**
      * addAll(null) throws NPE
      */
     public void testAddAll1() {
+        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet();
             q.addAll(null);
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -219,9 +224,9 @@ public class ConcurrentSkipListSetTest e
      * addAll of a collection with null elements throws NPE
      */
     public void testAddAll2() {
+        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
+        Integer[] ints = new Integer[SIZE];
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet();
-            Integer[] ints = new Integer[SIZE];
             q.addAll(Arrays.asList(ints));
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -232,11 +237,11 @@ public class ConcurrentSkipListSetTest e
      * possibly adding some elements
      */
     public void testAddAll3() {
+        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
+        Integer[] ints = new Integer[SIZE];
+        for (int i = 0; i < SIZE - 1; ++i)
+            ints[i] = new Integer(i);
         try {
-            ConcurrentSkipListSet q = new ConcurrentSkipListSet();
-            Integer[] ints = new Integer[SIZE];
-            for (int i = 0; i < SIZE-1; ++i)
-                ints[i] = new Integer(i);
             q.addAll(Arrays.asList(ints));
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -249,7 +254,7 @@ public class ConcurrentSkipListSetTest e
         Integer[] empty = new Integer[0];
         Integer[] ints = new Integer[SIZE];
         for (int i = 0; i < SIZE; ++i)
-            ints[i] = new Integer(SIZE-1-i);
+            ints[i] = new Integer(SIZE - 1 - i);
         ConcurrentSkipListSet q = new ConcurrentSkipListSet();
         assertFalse(q.addAll(Arrays.asList(empty)));
         assertTrue(q.addAll(Arrays.asList(ints)));
@@ -273,7 +278,7 @@ public class ConcurrentSkipListSetTest e
      */
     public void testPollLast() {
         ConcurrentSkipListSet q = populatedSet(SIZE);
-        for (int i = SIZE-1; i >= 0; --i) {
+        for (int i = SIZE - 1; i >= 0; --i) {
             assertEquals(i, q.pollLast());
         }
         assertNull(q.pollFirst());
@@ -288,14 +293,14 @@ public class ConcurrentSkipListSetTest e
             assertTrue(q.contains(i));
             assertTrue(q.remove(i));
             assertFalse(q.contains(i));
-            assertTrue(q.contains(i-1));
+            assertTrue(q.contains(i - 1));
         }
         for (int i = 0; i < SIZE; i += 2) {
             assertTrue(q.contains(i));
             assertTrue(q.remove(i));
             assertFalse(q.contains(i));
-            assertFalse(q.remove(i+1));
-            assertFalse(q.contains(i+1));
+            assertFalse(q.remove(i + 1));
+            assertFalse(q.contains(i + 1));
         }
         assertTrue(q.isEmpty());
     }
@@ -354,7 +359,7 @@ public class ConcurrentSkipListSetTest e
                 assertTrue(changed);
 
             assertTrue(q.containsAll(p));
-            assertEquals(SIZE-i, q.size());
+            assertEquals(SIZE - i, q.size());
             p.pollFirst();
         }
     }
@@ -367,10 +372,10 @@ public class ConcurrentSkipListSetTest e
             ConcurrentSkipListSet q = populatedSet(SIZE);
             ConcurrentSkipListSet p = populatedSet(i);
             assertTrue(q.removeAll(p));
-            assertEquals(SIZE-i, q.size());
+            assertEquals(SIZE - i, q.size());
             for (int j = 0; j < i; ++j) {
-                Integer I = (Integer)(p.pollFirst());
-                assertFalse(q.contains(I));
+                Integer x = (Integer)(p.pollFirst());
+                assertFalse(q.contains(x));
             }
         }
     }
@@ -473,27 +478,21 @@ public class ConcurrentSkipListSetTest e
      */
     public void testIterator() {
         ConcurrentSkipListSet q = populatedSet(SIZE);
-        int i = 0;
         Iterator it = q.iterator();
-        while (it.hasNext()) {
+        int i;
+        for (i = 0; it.hasNext(); i++)
             assertTrue(q.contains(it.next()));
-            ++i;
-        }
         assertEquals(i, SIZE);
+        assertIteratorExhausted(it);
     }
 
     /**
      * iterator of empty set has no elements
      */
     public void testEmptyIterator() {
-        ConcurrentSkipListSet q = new ConcurrentSkipListSet();
-        int i = 0;
-        Iterator it = q.iterator();
-        while (it.hasNext()) {
-            assertTrue(q.contains(it.next()));
-            ++i;
-        }
-        assertEquals(0, i);
+        NavigableSet s = new ConcurrentSkipListSet();
+        assertIteratorExhausted(s.iterator());
+        assertIteratorExhausted(s.descendingSet().iterator());
     }
 
     /**
@@ -699,7 +698,8 @@ public class ConcurrentSkipListSetTest e
     }
 
     static NavigableSet<Integer> newSet(Class cl) throws Exception {
-        NavigableSet<Integer> result = (NavigableSet<Integer>) cl.newInstance();
+        NavigableSet<Integer> result =
+            (NavigableSet<Integer>) cl.getConstructor().newInstance();
         assertEquals(0, result.size());
         assertFalse(result.iterator().hasNext());
         return result;
@@ -732,7 +732,7 @@ public class ConcurrentSkipListSetTest e
         // Add entries till we're back to original size
         while (set.size() < size) {
             int element = min + rnd.nextInt(rangeSize);
-            assertTrue(element >= min && element<= max);
+            assertTrue(element >= min && element <= max);
             put(set, element, bs);
         }
     }
@@ -758,7 +758,7 @@ public class ConcurrentSkipListSetTest e
         // Add entries till we're back to original size
         while (set.size() < size) {
             int element = min - 5 + rnd.nextInt(rangeSize + 10);
-            if (element >= min && element<= max) {
+            if (element >= min && element <= max) {
                 put(set, element, bs);
             } else {
                 try {
@@ -982,7 +982,7 @@ public class ConcurrentSkipListSetTest e
     }
 
     static boolean eq(Integer i, int j) {
-        return i == null ? j == -1 : i == j;
+        return (i == null) ? j == -1 : i == j;
     }
 
 }