diff -r 2c33418a6d57 -r 83b611b88ac8 jdk/test/java/lang/ModuleTests/AddExportsTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/ModuleTests/AddExportsTest.java	Fri Apr 07 08:05:54 2017 +0000
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2016, 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
+ * @modules java.base/jdk.internal.misc
+ *          java.desktop
+ * @run main/othervm --add-exports=java.desktop/sun.awt=java.base AddExportsTest
+ * @run main/othervm --add-exports=java.desktop/sun.awt=ALL-UNNAMED AddExportsTest
+ * @summary Test Module isExported methods with exports changed by -AddExportsTest
+ */
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+import jdk.internal.misc.VM;
+
+public class AddExportsTest {
+    /*
+     * jtreg sets -Dtest.modules system property to the internal APIs
+     * specified at @modules tag.  The test will exclude --add-exports set
+     * for @modules.
+     */
+    private static final String TEST_MODULES = System.getProperty("test.modules");
+
+    public static void main(String[] args) {
+
+        Optional<String> oaddExports = Stream.of(VM.getRuntimeArguments())
+            .filter(arg -> arg.startsWith("--add-exports="))
+            .filter(arg -> !arg.equals("--add-exports=" + TEST_MODULES + "=ALL-UNNAMED"))
+            .map(arg -> arg.substring("--add-exports=".length(), arg.length()))
+            .findFirst();
+
+        assertTrue(oaddExports.isPresent());
+
+        ModuleLayer bootLayer = ModuleLayer.boot();
+
+        Module unnamedModule = AddExportsTest.class.getModule();
+        assertFalse(unnamedModule.isNamed());
+
+        for (String expr : oaddExports.get().split(",")) {
+
+            String[] s = expr.split("=");
+            assertTrue(s.length == 2);
+
+            // $MODULE/$PACKAGE
+            String[] moduleAndPackage = s[0].split("/");
+            assertTrue(moduleAndPackage.length == 2);
+
+            String mn = moduleAndPackage[0];
+            String pn = moduleAndPackage[1];
+
+            // source module
+            Module source;
+            Optional<Module> om = bootLayer.findModule(mn);
+            assertTrue(om.isPresent(), mn + " not in boot layer");
+            source = om.get();
+
+            // package should not be exported unconditionally
+            assertFalse(source.isExported(pn),
+                        pn + " should not be exported unconditionally");
+
+            // $TARGET
+            String tn = s[1];
+            if ("ALL-UNNAMED".equals(tn)) {
+
+                // package is exported to all unnamed modules
+                assertTrue(source.isExported(pn, unnamedModule),
+                           pn + " should be exported to all unnamed modules");
+
+            } else {
+
+                om = bootLayer.findModule(tn);
+                assertTrue(om.isPresent());
+                Module target = om.get();
+
+                // package should be exported to target module
+                assertTrue(source.isExported(pn, target),
+                           pn + " should be exported to " + target);
+
+                // package should not be exported to unnamed modules
+                assertFalse(source.isExported(pn, unnamedModule),
+                            pn + " should not be exported to unnamed modules");
+
+            }
+
+        }
+    }
+
+    static void assertTrue(boolean cond) {
+        if (!cond) throw new RuntimeException();
+    }
+
+    static void assertTrue(boolean cond, String msg) {
+        if (!cond) throw new RuntimeException(msg);
+    }
+
+    static void assertFalse(boolean cond) {
+        if (cond) throw new RuntimeException();
+    }
+
+    static void assertFalse(boolean cond, String msg) {
+        if (cond) throw new RuntimeException(msg);
+    }
+
+}