--- jsr166/src/test/tck/ThreadLocalRandom8Test.java	2015/04/25 04:55:31	1.9
+++ jsr166/src/test/tck/ThreadLocalRandom8Test.java	2017/08/04 03:30:21	1.12
@@ -232,4 +232,20 @@ public class ThreadLocalRandom8Test exte
         assertEquals(size, counter.sum());
     }
 
+    /**
+     * A deserialized/reserialized ThreadLocalRandom is always
+     * identical to ThreadLocalRandom.current()
+     */
+    public void testSerialization() {
+        assertSame(
+            ThreadLocalRandom.current(),
+            serialClone(ThreadLocalRandom.current()));
+        // In the current implementation, there is exactly one shared instance
+        if (testImplementationDetails)
+            assertSame(
+                ThreadLocalRandom.current(),
+                java.util.concurrent.CompletableFuture.supplyAsync(
+                    () -> serialClone(ThreadLocalRandom.current())).join());
+    }
+
 }