diff -r 4ebc2e2fb97c -r 71c04702a3d5 test/jdk/javax/swing/MultiUIDefaults/Test6860438.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/javax/swing/MultiUIDefaults/Test6860438.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2009, 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 6860438
+   @summary Tests various MultiUIDefaults methods
+   @author Peter Zhelezniakov
+   @run main Test6860438
+*/
+
+import java.util.Enumeration;
+import java.util.Map.Entry;
+import java.util.Set;
+import javax.swing.UIManager;
+
+public class Test6860438
+{
+    static final String KEY = "Test6860438.key";
+    static final String VALUE = "Test6860438.value";
+
+    void check(Object key, Object value, boolean present, int size) {
+        check(UIManager.get(key) == value, "UIManager.get()");
+        check(UIManager.getDefaults().size() == size, "MultiUIDefaults.size()");
+
+        checkEnumeration(UIManager.getDefaults().keys(),
+                key, present, "MultiUIDefaults.keys()");
+        checkEnumeration(UIManager.getDefaults().elements(),
+                value, present, "MultiUIDefaults.elements()");
+
+        // check MultiUIDefaults.entrySet()
+        boolean found = false;
+        Set<Entry<Object, Object>> entries = UIManager.getDefaults().entrySet();
+        for (Entry<Object, Object> e: entries) {
+            if (e.getKey() == key) {
+                check(e.getValue() == value, "MultiUIDefaults.entrySet()");
+                found = true;
+            }
+        }
+        check(found == present, "MultiUIDefaults.entrySet()");
+    }
+
+    void checkEnumeration(Enumeration<Object> e, Object elem,
+            boolean present, String error) {
+        boolean found = false;
+        while (e.hasMoreElements()) {
+            if (e.nextElement() == elem) {
+                found = true;
+            }
+        }
+        check(found == present, error);
+    }
+
+    void check(boolean condition, String methodName) {
+        if (! condition) {
+            throw new RuntimeException(methodName + " failed");
+        }
+    }
+
+    void test() {
+        int size = UIManager.getDefaults().size();
+
+        // create a new value, size increases
+        UIManager.getLookAndFeelDefaults().put(KEY, VALUE);
+        check(KEY, VALUE, true, size + 1);
+
+        // override the value, size remains the same
+        UIManager.put(KEY, VALUE);
+        check(KEY, VALUE, true, size + 1);
+
+        // remove the value, size decreases
+        UIManager.getDefaults().remove(KEY);
+        check(KEY, null, false, size);
+    }
+
+    public static void main(String[] args) {
+        new Test6860438().test();
+    }
+}