--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/Map/CheckRandomHashSeed.java	Tue Jun 04 10:04:28 2013 +0100
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8005698
+ * @summary Check operation of jdk.map.useRandomSeed property
+ * @run main CheckRandomHashSeed
+ * @run main/othervm -Djdk.map.useRandomSeed=false CheckRandomHashSeed
+ * @run main/othervm -Djdk.map.useRandomSeed=bogus CheckRandomHashSeed
+ * @run main/othervm -Djdk.map.useRandomSeed=true CheckRandomHashSeed true
+ * @author Brent Christian
+ */
+import java.lang.reflect.Field;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Hashtable;
+import java.util.WeakHashMap;
+
+public class CheckRandomHashSeed {
+    private final static String PROP_NAME = "jdk.map.useRandomSeed";
+    static boolean expectRandom = false;
+
+    public static void main(String[] args) {
+        if (args.length > 0 && args[0].equals("true")) {
+            expectRandom = true;
+        }
+        String hashSeedProp = System.getProperty(PROP_NAME);
+        boolean propSet = (null != hashSeedProp)
+                ? Boolean.parseBoolean(hashSeedProp) : false;
+        if (expectRandom != propSet) {
+            throw new Error("Error in test setup: " + (expectRandom ? "" : "not " ) + "expecting random hashSeed, but " + PROP_NAME + " is " + (propSet ? "" : "not ") + "enabled");
+        }
+
+        testMap(new HashMap());
+        testMap(new LinkedHashMap());
+        testMap(new WeakHashMap());
+        testMap(new Hashtable());
+    }
+
+    private static void testMap(Map map) {
+        int hashSeed = getHashSeed(map);
+        boolean hashSeedIsZero = (hashSeed == 0);
+
+        if (expectRandom != hashSeedIsZero) {
+            System.out.println("Test passed for " + map.getClass().getSimpleName() + " - expectRandom: " + expectRandom + ", hashSeed: " + hashSeed);
+        } else {
+            throw new Error ("Test FAILED for " + map.getClass().getSimpleName() + " -  expectRandom: " + expectRandom + ", hashSeed: " + hashSeed);
+        }
+    }
+
+    private static int getHashSeed(Map map) {
+        try {
+            if (map instanceof HashMap || map instanceof LinkedHashMap) {
+                map.put("Key", "Value");
+                Field hashSeedField = HashMap.class.getDeclaredField("hashSeed");
+                hashSeedField.setAccessible(true);
+                int hashSeed = hashSeedField.getInt(map);
+                return hashSeed;
+            } else {
+                map.put("Key", "Value");
+                Field hashSeedField = map.getClass().getDeclaredField("hashSeed");
+                hashSeedField.setAccessible(true);
+                int hashSeed = hashSeedField.getInt(map);
+                return hashSeed;
+            }
+        } catch(Exception e) {
+            e.printStackTrace();
+            throw new Error(e);
+        }
+    }
+}