test/jdk/java/util/Map/FunctionalCMEs.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, 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.  Oracle designates this

@@ -28,10 +28,11 @@
 import java.util.HashMap;
 import java.util.Hashtable;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.TreeMap;
 import java.util.function.BiFunction;
 
 import org.testng.annotations.Test;
 import org.testng.annotations.DataProvider;
 

@@ -51,10 +52,11 @@
         return Arrays.asList(
                 // Test maps that CME
                 new Object[]{new HashMap<>(), true},
                 new Object[]{new Hashtable<>(), true},
                 new Object[]{new LinkedHashMap<>(), true},
+                new Object[]{new TreeMap<>(), true},
                 // Test default Map methods - no CME
                 new Object[]{new Defaults.ExtendsAbstractMap<>(), false}
         ).iterator();
     }