--- jsr166/src/test/tck/PriorityQueueTest.java	2017/08/04 03:30:21	1.44
+++ jsr166/src/test/tck/PriorityQueueTest.java	2018/05/06 22:09:42	1.45
@@ -28,11 +28,19 @@ public class PriorityQueueTest extends J
             public boolean isConcurrent() { return false; }
             public boolean permitsNulls() { return false; }
         }
+        class ComparatorImplementation implements CollectionImplementation {
+            public Class<?> klazz() { return PriorityQueue.class; }
+            public Collection emptyCollection() { return new PriorityQueue(new MyReverseComparator()); }
+            public Object makeElement(int i) { return i; }
+            public boolean isConcurrent() { return false; }
+            public boolean permitsNulls() { return false; }
+        }
         return newTestSuite(PriorityQueueTest.class,
-                            CollectionTest.testSuite(new Implementation()));
+                            CollectionTest.testSuite(new Implementation()),
+                            CollectionTest.testSuite(new ComparatorImplementation()));
     }
 
-    static class MyReverseComparator implements Comparator {
+    static class MyReverseComparator implements Comparator, java.io.Serializable {
         public int compare(Object x, Object y) {
             return ((Comparable)y).compareTo(x);
         }