diff a/test/jdk/valhalla/valuetypes/ValueClassTest.java b/test/jdk/valhalla/valuetypes/ValueClassTest.java
--- /dev/null
+++ b/test/jdk/valhalla/valuetypes/ValueClassTest.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2025, 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
+ * @summary Test jdk.internal.value.ValueClass
+ * @modules java.base/jdk.internal.misc
+ *          java.base/jdk.internal.value
+ * @run junit ValueClassTest
+ * @run junit/othervm --enable-preview ValueClassTest
+ */
+
+import java.util.ArrayList;
+
+import jdk.internal.misc.PreviewFeatures;
+import jdk.internal.value.ValueClass;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ValueClassTest {
+    @Test
+    void testIsValueObjectCompatible() {
+        isValueObjectCompatibleCase(false, int.class, "primitive");
+        isValueObjectCompatibleCase(true, Object.class, "Object");
+        isValueObjectCompatibleCase(true, Number.class, "abstract value class");
+        isValueObjectCompatibleCase(true, Integer.class, "final value class");
+        isValueObjectCompatibleCase(false, ClassValue.class, "abstract identity class");
+        isValueObjectCompatibleCase(false, ArrayList.class, "identity class");
+        isValueObjectCompatibleCase(false, String.class, "final identity class");
+        isValueObjectCompatibleCase(true, Comparable.class, "interface");
+        isValueObjectCompatibleCase(false, int[].class, "array class");
+        isValueObjectCompatibleCase(false, Object[].class, "array class");
+        isValueObjectCompatibleCase(false, Number[].class, "array class");
+        isValueObjectCompatibleCase(false, Integer[].class, "array class");
+        isValueObjectCompatibleCase(false, ClassValue[].class, "array class");
+        isValueObjectCompatibleCase(false, ArrayList[].class, "array class");
+        isValueObjectCompatibleCase(false, String[].class, "array class");
+        isValueObjectCompatibleCase(false, Comparable[].class, "array class");
+    }
+
+    private static void isValueObjectCompatibleCase(boolean expected, Class<?> arg, String classification) {
+        assertEquals(PreviewFeatures.isEnabled() && expected,
+                     ValueClass.isValueObjectCompatible(arg),
+                     () -> classification + ": " + arg.getTypeName());
+    }
+
+    @Test
+    void testIsConcreteValueClass() {
+        isConcreteValueClassCase(false, int.class, "primitive");
+        isConcreteValueClassCase(false, Object.class, "Object");
+        isConcreteValueClassCase(false, Number.class, "abstract value class");
+        isConcreteValueClassCase(true, Integer.class, "final value class");
+        isConcreteValueClassCase(false, ClassValue.class, "abstract identity class");
+        isConcreteValueClassCase(false, ArrayList.class, "identity class");
+        isConcreteValueClassCase(false, String.class, "final identity class");
+        isConcreteValueClassCase(false, Comparable.class, "interface");
+        isConcreteValueClassCase(false, int[].class, "array class");
+        isConcreteValueClassCase(false, Object[].class, "array class");
+        isConcreteValueClassCase(false, Number[].class, "array class");
+        isConcreteValueClassCase(false, Integer[].class, "array class");
+        isConcreteValueClassCase(false, ClassValue[].class, "array class");
+        isConcreteValueClassCase(false, ArrayList[].class, "array class");
+        isConcreteValueClassCase(false, String[].class, "array class");
+        isConcreteValueClassCase(false, Comparable[].class, "array class");
+    }
+
+    private static void isConcreteValueClassCase(boolean expected, Class<?> arg, String classification) {
+        assertEquals(PreviewFeatures.isEnabled() && expected,
+                     ValueClass.isConcreteValueClass(arg),
+                     () -> classification + ": " + arg.getTypeName());
+    }
+}
