1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  *  @test
  26  *  @bug 8075331
  27  *  @summary Verify that we can call varargs methods
  28  *  @run build TestScaffold VMConnection TargetAdapter TargetListener
  29  *  @run compile -g InvokeVarArgs.java
  30  *  @run driver InvokeVarArgs
  31  */
  32 
  33 import com.sun.jdi.*;
  34 import com.sun.jdi.event.*;
  35 import java.util.Arrays;
  36 
  37 interface MyInterface {
  38 }
  39 
  40 class SomeClass implements MyInterface {
  41 }
  42 
  43 class InvokeVarArgsTarg {
  44 
  45     public static void main(String args[]) {
  46         new InvokeVarArgsTarg().run();
  47     }
  48 
  49     SomeClass someClass1 = new SomeClass();
  50     SomeClass someClass2 = new SomeClass();
  51 
  52     MyInterface[] array = new MyInterface[]{someClass1, someClass2};
  53     SomeClass[] array2 = new SomeClass[]{someClass1, someClass2};
  54 
  55     public void run() {
  56         System.out.println("size(array) : " + size(array));
  57         System.out.println("size(array2) : " + size(array2));
  58     }
  59 
  60     int size(Object... value) {
  61         return value.length;
  62     }
  63 }
  64 
  65 public class InvokeVarArgs extends TestScaffold {
  66 
  67     public static void main(String args[]) throws Exception {
  68         new InvokeVarArgs(args).startTests();
  69     }
  70 
  71     InvokeVarArgs(String args[]) throws Exception {
  72         super(args);
  73     }
  74 
  75     protected void runTests() throws Exception {
  76 
  77         BreakpointEvent bpe = startTo("InvokeVarArgsTarg", "run", "()V");
  78         StackFrame frame = bpe.thread().frame(0);
  79         ObjectReference targetObj = frame.thisObject();
  80         ReferenceType targetType = (ReferenceType) targetObj.type();
  81         Value arrayVal = targetObj.getValue(targetType.fieldByName("array"));
  82         Value array2Val = targetObj.getValue(targetType.fieldByName("array2"));
  83         Method sizeMethod = targetType.methodsByName("size", "([Ljava/lang/Object;)I").get(0);
  84 
  85         IntegerValue size = (IntegerValue) targetObj.invokeMethod(bpe.thread(), sizeMethod, Arrays.asList(new Value[]{arrayVal}), 0);
  86         if (size.value() != 2) {
  87             throw new Exception("size(array) should be 2, but was " + size.value());
  88         }
  89 
  90         size = (IntegerValue) targetObj.invokeMethod(bpe.thread(), sizeMethod, Arrays.asList(new Value[]{array2Val}), 0);
  91         if (size.value() != 2) {
  92             throw new Exception("size(array2) should be 2, but was " + size.value());
  93         }
  94 
  95         listenUntilVMDisconnect();
  96     }
  97 }