1 /*
   2  * Copyright (c) 2011, 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 6960211
  27  * @summary JavaScript engine allows creation of interface although methods not available.
  28  * @run main/othervm -Djava.awt.headless=true GetInterfaceTest
  29  */
  30 
  31 import javax.script.*;
  32 
  33 public class GetInterfaceTest {
  34     public static void main(String[] args) throws Exception {
  35         ScriptEngineManager manager = new ScriptEngineManager();
  36         ScriptEngine engine = manager.getEngineByName("js");
  37 
  38         if (engine == null) {
  39             System.out.println("Warning: No engine engine found; test vacuously passes.");
  40             return;
  41         }
  42 
  43         // don't define any function.
  44         engine.eval("");
  45 
  46         Runnable runnable = ((Invocable)engine).getInterface(Runnable.class);
  47         if (runnable != null) {
  48             throw new RuntimeException("runnable is not null!");
  49         }
  50 
  51         // now define "run"
  52         engine.eval("function run() { println('this is run function'); }");
  53         runnable = ((Invocable)engine).getInterface(Runnable.class);
  54         // should not return null now!
  55         runnable.run();
  56 
  57         // define only one method of "Foo2"
  58         engine.eval("function bar() { println('bar function'); }");
  59         Foo2 foo2 = ((Invocable)engine).getInterface(Foo2.class);
  60         if (foo2 != null) {
  61             throw new RuntimeException("foo2 is not null!");
  62         }
  63 
  64         // now define other method of "Foo2"
  65         engine.eval("function bar2() { println('bar2 function'); }");
  66         foo2 = ((Invocable)engine).getInterface(Foo2.class);
  67         foo2.bar();
  68         foo2.bar2();
  69     }
  70 
  71     interface Foo {
  72         public void bar();
  73     }
  74 
  75     interface Foo2 extends Foo {
  76         public void bar2();
  77     }
  78 }