--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/jigsaw/classpathtests/DummyClassesInBootClassPath.java	Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2015, 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
+ * @summary Ensure that classes found in jimage takes precedence over classes found in -Xbootclasspath/a.
+ * @requires vm.cds
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
+ * @modules java.compiler
+ *          jdk.jartool/sun.tools.jar
+ * @compile ../../test-classes/DummyClassHelper.java
+ * @compile ../../test-classes/java/net/HttpCookie.jasm
+ * @compile ../../../javax/annotation/processing/FilerException.jasm
+ * @build sun.hotspot.WhiteBox
+ * @run driver ClassFileInstaller sun.hotspot.WhiteBox
+ * @run driver DummyClassesInBootClassPath
+ */
+
+import java.io.File;
+import java.util.List;
+import java.util.ArrayList;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class DummyClassesInBootClassPath {
+    private static final String METHOD_NAME = "thisClassIsDummy()";
+
+    static void checkOutput(OutputAnalyzer output, String[] classNames) throws Exception {
+        for (int i = 0; i < classNames.length; i++) {
+            String cn = classNames[i].replace('/', '.');
+            TestCommon.checkExec(output,
+                "java.lang.NoSuchMethodException: " + cn + "." +
+                METHOD_NAME);
+            output.shouldNotContain(cn + ".class should be in shared space.");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        String classNames[] = { "java/net/HttpCookie",
+                                "javax/annotation/processing/FilerException"};
+        JarBuilder.build("dummyClasses", classNames[0], classNames[1]);
+
+        String appJar = TestCommon.getTestJar("dummyClasses.jar");
+        OutputAnalyzer dumpOutput = TestCommon.dump(
+            appJar, classNames, "-Xbootclasspath/a:" + appJar);
+        TestCommon.checkDump(dumpOutput);
+
+        List<String> argsList = new ArrayList<String>();
+        for (int i = 0; i < classNames.length; i++) {
+            argsList.add(classNames[i].replace('/', '.'));
+        }
+        String[] arguments = new String[argsList.size()];
+        arguments = argsList.toArray(arguments);
+        TestCommon.run(
+            "-Xbootclasspath/a:" + appJar,
+            "DummyClassHelper", arguments[0], arguments[1])
+          .assertNormalExit(output -> checkOutput(output, classNames));
+
+        JarBuilder.build(true, "WhiteBox", "sun/hotspot/WhiteBox");
+        String whiteBoxJar = TestCommon.getTestJar("WhiteBox.jar");
+        String bootClassPath = "-Xbootclasspath/a:" + appJar +
+            File.pathSeparator + whiteBoxJar;
+        dumpOutput = TestCommon.dump(
+            appJar, classNames, bootClassPath);
+        argsList.add("testWithWhiteBox");
+        arguments = new String[argsList.size()];
+        arguments = argsList.toArray(arguments);
+        String[] opts = {"-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
+            bootClassPath, "-Xlog:class+path=trace",
+            "DummyClassHelper", arguments[0], arguments[1], arguments[2]};
+        TestCommon.run(opts)
+          .assertNormalExit(output -> checkOutput(output, classNames));
+    }
+}
+