hotspot/test/runtime/Unsafe/AllocateInstance.java
changeset 28732 d4b650e48a8f
child 29678 dd2f3932c21e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/Unsafe/AllocateInstance.java	Fri Jan 23 11:44:21 2015 -0800
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, 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 Verifies the behaviour of Unsafe.allocateInstance
+ * @library /testlibrary
+ * @run main AllocateInstance
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.misc.Unsafe;
+import static com.oracle.java.testlibrary.Asserts.*;
+
+public class AllocateInstance {
+    public static void main(String args[]) throws Exception {
+        Unsafe unsafe = Utils.getUnsafe();
+
+        // allocateInstance() should not result in a call to the constructor
+        TestClass tc = (TestClass)unsafe.allocateInstance(TestClass.class);
+        assertFalse(tc.calledConstructor);
+
+        // allocateInstance() on an abstract class should result in an InstantiationException
+        try {
+            AbstractClass ac = (AbstractClass)unsafe.allocateInstance(AbstractClass.class);
+            throw new RuntimeException("Did not get expected InstantiationException");
+        } catch (InstantiationException e) {
+            // Expected
+        }
+    }
+
+    class TestClass {
+        public boolean calledConstructor = false;
+
+        public TestClass() {
+            calledConstructor = true;
+        }
+    }
+
+    abstract class AbstractClass {
+        public AbstractClass() {}
+    }
+}