test/jdk/java/lang/Class/forName/NonLinking/NonLinking.java
changeset 59137 faac483dfb30
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/Class/forName/NonLinking/NonLinking.java	Tue Nov 19 10:02:46 2019 -0800
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+/*
+ * @test
+ * @bug 8231924 8233091 8233272
+ * @summary Confirm load (but not link) behavior of Class.forName()
+ * @library /test/lib
+ *
+ * @compile MissingClass.java Container.java
+ *
+ * @run driver ClassFileInstaller -jar classes.jar Container Container$1
+ *
+ * @run main/othervm NonLinking init
+ * @run main/othervm NonLinking load
+ */
+/*
+ * The @compile and '@main ClassFileInstaller' tasks above create a classes.jar
+ * file containing the .class file for Container, but not MissingClass.
+ */
+
+public class NonLinking {
+    public static void main(String[] args) throws Throwable {
+        Path jarPath = Paths.get("classes.jar");
+        URL url = jarPath.toUri().toURL();
+        URLClassLoader ucl1 = new URLClassLoader("UCL1",
+                                                 new URL[] { url },
+                                                 null); // Don't delegate
+        switch(args[0]) {
+            case "init":
+                try {
+                    // Trying to initialize Container without MissingClass -> NCDFE
+                    Class.forName("Container", true, ucl1);
+                    throw new RuntimeException("Missed expected NoClassDefFoundError");
+                } catch (NoClassDefFoundError expected) {
+                    final String CLASSNAME = "MissingClass";
+                    Throwable cause = expected.getCause();
+                    if (!cause.getMessage().contains(CLASSNAME)) {
+                        throw new RuntimeException("Cause of NoClassDefFoundError does not contain \"" + CLASSNAME + "\"", cause);
+                    }
+                }
+                break;
+            case "load":
+                // Loading (but not linking) Container will succeed.
+                // Before 8233091, this fails with NCDFE due to linking.
+                Class.forName("Container", false, ucl1);
+                break;
+            default:
+                throw new RuntimeException("Unknown command: " + args[0]);
+        }
+    }
+}