--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/tools/jar/multiRelease/whitebox/jdk.jartool/sun/tools/jar/ValidatorComparatorTest.java	Thu May 04 07:26:55 2017 +0000
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+/*
+ * @summary White-box test for Validator.ENTRYNAME_COMPARATOR ( currently just
+ *          checks module descriptors ).
+ */
+package sun.tools.jar;
+
+import java.util.List;
+import static java.util.stream.Collectors.toList;
+import static sun.tools.jar.Validator.ENTRYNAME_COMPARATOR;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+public class ValidatorComparatorTest {
+
+    @Test
+    public void testModuleInfo() throws Throwable {
+        List<String> list =
+                List.of("module-info.class",
+                        "META-INF/versions/9/module-info.class",
+                        "META-INF/versions/10/module-info.class");
+        List<String> sorted = list.stream()
+                .sorted(ENTRYNAME_COMPARATOR)
+                .collect(toList());
+        List<String> expected = list;
+        Assert.assertEquals(sorted, expected);
+
+
+        list =  List.of("META-INF/versions/10/module-info.class",
+                        "META-INF/versions/9/module-info.class",
+                        "module-info.class");
+        sorted = list.stream().sorted(ENTRYNAME_COMPARATOR).collect(toList());
+        expected =
+                List.of("module-info.class",
+                        "META-INF/versions/9/module-info.class",
+                        "META-INF/versions/10/module-info.class");
+        Assert.assertEquals(sorted, expected);
+
+
+        list =  List.of("META-INF/versions/1001/module-info.class",
+                        "META-INF/versions/1000/module-info.class",
+                        "META-INF/versions/999/module-info.class",
+                        "META-INF/versions/101/module-info.class",
+                        "META-INF/versions/100/module-info.class",
+                        "META-INF/versions/99/module-info.class",
+                        "META-INF/versions/31/module-info.class",
+                        "META-INF/versions/30/module-info.class",
+                        "META-INF/versions/29/module-info.class",
+                        "META-INF/versions/21/module-info.class",
+                        "META-INF/versions/20/module-info.class",
+                        "META-INF/versions/13/module-info.class",
+                        "META-INF/versions/12/module-info.class",
+                        "META-INF/versions/11/module-info.class",
+                        "META-INF/versions/10/module-info.class",
+                        "META-INF/versions/9/module-info.class",
+                        "module-info.class");
+        sorted = list.stream().sorted(ENTRYNAME_COMPARATOR).collect(toList());
+        expected =
+                List.of("module-info.class",
+                        "META-INF/versions/9/module-info.class",
+                        "META-INF/versions/10/module-info.class",
+                        "META-INF/versions/11/module-info.class",
+                        "META-INF/versions/12/module-info.class",
+                        "META-INF/versions/13/module-info.class",
+                        "META-INF/versions/20/module-info.class",
+                        "META-INF/versions/21/module-info.class",
+                        "META-INF/versions/29/module-info.class",
+                        "META-INF/versions/30/module-info.class",
+                        "META-INF/versions/31/module-info.class",
+                        "META-INF/versions/99/module-info.class",
+                        "META-INF/versions/100/module-info.class",
+                        "META-INF/versions/101/module-info.class",
+                        "META-INF/versions/999/module-info.class",
+                        "META-INF/versions/1000/module-info.class",
+                        "META-INF/versions/1001/module-info.class");
+        Assert.assertEquals(sorted, expected);
+    }
+}