--- jsr166/src/test/tck/CountedCompleterTest.java	2015/10/18 16:43:53	1.21
+++ jsr166/src/test/tck/CountedCompleterTest.java	2016/10/15 18:51:12	1.30
@@ -13,6 +13,7 @@ import java.util.concurrent.CountedCompl
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ForkJoinPool;
 import java.util.concurrent.ForkJoinTask;
+import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
@@ -299,6 +300,7 @@ public class CountedCompleterTest extend
     void testComplete(NoopCC cc, Object x, int pendingCount) {
         cc.setPendingCount(pendingCount);
         cc.checkCompletes(x);
+        assertEquals(pendingCount, cc.getPendingCount());
     }
 
     /**
@@ -334,10 +336,15 @@ public class CountedCompleterTest extend
     public void testSetPendingCount() {
         NoopCC a = new NoopCC();
         assertEquals(0, a.getPendingCount());
-        a.setPendingCount(1);
-        assertEquals(1, a.getPendingCount());
-        a.setPendingCount(27);
-        assertEquals(27, a.getPendingCount());
+        int[] vals = {
+             -1, 0, 1,
+             Integer.MIN_VALUE,
+             Integer.MAX_VALUE,
+        };
+        for (int val : vals) {
+            a.setPendingCount(val);
+            assertEquals(val, a.getPendingCount());
+        }
     }
 
     /**
@@ -350,6 +357,8 @@ public class CountedCompleterTest extend
         assertEquals(1, a.getPendingCount());
         a.addToPendingCount(27);
         assertEquals(28, a.getPendingCount());
+        a.addToPendingCount(-28);
+        assertEquals(0, a.getPendingCount());
     }
 
     /**
@@ -365,6 +374,9 @@ public class CountedCompleterTest extend
         assertEquals(0, a.getPendingCount());
         assertEquals(0, a.decrementPendingCountUnlessZero());
         assertEquals(0, a.getPendingCount());
+        a.setPendingCount(-1);
+        assertEquals(-1, a.decrementPendingCountUnlessZero());
+        assertEquals(-2, a.getPendingCount());
     }
 
     /**
@@ -488,7 +500,7 @@ public class CountedCompleterTest extend
     }
 
     /**
-     * quietlyCompleteRoot completes root task
+     * quietlyCompleteRoot completes root task and only root task
      */
     public void testQuietlyCompleteRoot() {
         NoopCC a = new NoopCC();