--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/modules/etc/TestRootModules.java	Tue Nov 19 11:35:29 2019 +0000
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018, 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.
+ *
+ * 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.
+ */
+
+import java.lang.module.ModuleDescriptor;
+import java.lang.module.ModuleFinder;
+import java.lang.module.ModuleReference;
+
+import jdk.internal.module.ModuleResolution;
+
+/**
+ * Test the set of modules in the boot layer includes all modules that export
+ * an API. Also test that java.se is not resolved.
+ */
+
+public class TestRootModules {
+    public static void main(String[] args) {
+        // all modules that export an API should be resolved
+        // For now, this test ignores the ModuleResolution attribute
+        ModuleLayer bootLayer = ModuleLayer.boot();
+        ModuleFinder.ofSystem().findAll().stream()
+            .filter(mref -> !ModuleResolution.doNotResolveByDefault(mref))
+            .map(ModuleReference::descriptor)
+            .filter(descriptor -> descriptor.exports()
+                    .stream()
+                    .filter(e -> !e.isQualified())
+                    .findAny()
+                    .isPresent())
+            .map(ModuleDescriptor::name)
+            .forEach(name -> {
+                if (!bootLayer.findModule(name).isPresent())
+                    throw new RuntimeException(name + " not in boot layer");
+            });
+
+        // java.se should not be resolved
+        ModuleLayer.boot()
+                .findModule("java.se")
+                .map(m -> { throw new RuntimeException("java.se should not be resolved"); });
+    }
+}