--- /dev/null	2019-12-04 18:44:18.020007537 +0000
+++ new/test/jdk/java/foreign/TestLayoutConstants.java	2019-12-09 18:15:48.704340889 +0000
@@ -0,0 +1,96 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+/*
+ * @test
+ * @run testng TestLayoutConstants
+ */
+
+import jdk.incubator.foreign.MemoryLayouts;
+import jdk.incubator.foreign.MemoryLayout;
+
+import java.lang.invoke.MethodHandles;
+
+import org.testng.annotations.*;
+import static org.testng.Assert.*;
+
+public class TestLayoutConstants {
+
+    @Test(dataProvider = "layouts")
+    public void testDescribeResolve(MemoryLayout expected) {
+        try {
+            MemoryLayout actual = expected.describeConstable().get()
+                    .resolveConstantDesc(MethodHandles.lookup());
+            assertEquals(actual, expected);
+        } catch (ReflectiveOperationException ex) {
+            throw new AssertionError(ex);
+        }
+    }
+
+    @DataProvider(name = "layouts")
+    public Object[][] createLayouts() {
+        return new Object[][] {
+                //padding
+                { MemoryLayouts.PAD_32 },
+                { MemoryLayout.ofSequence(MemoryLayouts.PAD_32) },
+                { MemoryLayout.ofSequence(5, MemoryLayouts.PAD_32) },
+                { MemoryLayout.ofStruct(MemoryLayouts.PAD_32, MemoryLayouts.PAD_32) },
+                { MemoryLayout.ofUnion(MemoryLayouts.PAD_32, MemoryLayouts.PAD_32) },
+                //values, big endian
+                { MemoryLayouts.BITS_32_BE },
+                { MemoryLayout.ofStruct(
+                        MemoryLayouts.BITS_32_BE,
+                        MemoryLayouts.BITS_32_BE) },
+                { MemoryLayout.ofUnion(
+                        MemoryLayouts.BITS_32_BE,
+                        MemoryLayouts.BITS_32_BE) },
+                //values, little endian
+                { MemoryLayouts.BITS_32_LE },
+                { MemoryLayout.ofStruct(
+                        MemoryLayouts.BITS_32_LE,
+                        MemoryLayouts.BITS_32_LE) },
+                { MemoryLayout.ofUnion(
+                        MemoryLayouts.BITS_32_LE,
+                        MemoryLayouts.BITS_32_LE) },
+                //deeply nested
+                { MemoryLayout.ofStruct(
+                        MemoryLayouts.PAD_16,
+                        MemoryLayout.ofStruct(
+                                MemoryLayouts.PAD_8,
+                                MemoryLayouts.BITS_32_BE)) },
+                { MemoryLayout.ofUnion(
+                        MemoryLayouts.PAD_16,
+                        MemoryLayout.ofStruct(
+                                MemoryLayouts.PAD_8,
+                                MemoryLayouts.BITS_32_BE)) },
+                { MemoryLayout.ofSequence(
+                        MemoryLayout.ofStruct(
+                                MemoryLayouts.PAD_8,
+                                MemoryLayouts.BITS_32_BE)) },
+                { MemoryLayout.ofSequence(5,
+                        MemoryLayout.ofStruct(
+                                MemoryLayouts.PAD_8,
+                                MemoryLayouts.BITS_32_BE)) },
+        };
+    }
+}