langtools/test/tools/javac/TryWithResources/TestTwr09.java
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     1 /*
       
     2  * Copyright (c) 2010, 2013, 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     8025113
       
    27  * @author  sogoel
       
    28  * @summary t-w-r completes abruptly if the initialization of resource completes abruptly
       
    29  */
       
    30 
       
    31 import java.io.FileInputStream;
       
    32 import java.io.IOException;
       
    33 import java.io.File;
       
    34 
       
    35 /*
       
    36  * If the initialization of the resource completes abruptly because of a
       
    37  * throw of a value V ... and the automatic ->closing of the resource completes normally,
       
    38  * then the try-with-resources statement completes abruptly because of the throw of value V.
       
    39  */
       
    40 public class TestTwr09 {
       
    41 
       
    42     /**
       
    43      * throw from ctor of nested resource
       
    44      * Check first resource is not open.
       
    45      */
       
    46     String test1() {
       
    47         String ret = null;
       
    48         try (ResCloseable tr = new ResCloseable(new ResCloseable("throw from inner resource ctor",3))) {
       
    49             ret = "FAIL";
       
    50         } catch (RuntimeException re) {
       
    51             ret = re.getMessage();
       
    52         }
       
    53         return ret;
       
    54     }
       
    55 
       
    56     /**
       
    57      * throw from ctor of 2nd resource.
       
    58      * 1st resource, FileInputStream should be automatically closed.
       
    59      */
       
    60     String test2() {
       
    61         String ret = null;
       
    62         byte[] buf = new byte[1];
       
    63         try (java.io.ByteArrayInputStream tr = new java.io.ByteArrayInputStream(buf);
       
    64             ResCloseable str = new ResCloseable("throw from inner resource ctor",3)) {
       
    65             ret = "FAIL";
       
    66         } catch (final IOException fe) {
       
    67             ret = "FAIL test2";
       
    68         } catch (RuntimeException re) {
       
    69             ret = "PASS test2";
       
    70         }
       
    71         System.out.println("Ret = " + ret);
       
    72         return ret;
       
    73     }
       
    74 
       
    75     public static void main(String... args) {
       
    76         TestTwr09 t = new TestTwr09();
       
    77         if (t.test1().compareTo("throw from inner resource ctor") != 0) {
       
    78             throw new RuntimeException("FAIL-test1");
       
    79         }
       
    80         if (t.test2().compareTo("PASS test2") != 0) {
       
    81             throw new RuntimeException("FAIL-test2");
       
    82         }
       
    83     }
       
    84 }
       
    85 
       
    86 /** a simple resource the implements AutoCloseable so it can be used
       
    87  * in twr's resource specification block.
       
    88  */
       
    89 class ResCloseable implements AutoCloseable {
       
    90 
       
    91     ResCloseable testres = null;
       
    92     String msg = "default";
       
    93     boolean bOpen = false;
       
    94 
       
    95     public ResCloseable() {
       
    96         bOpen = true;
       
    97     }
       
    98 
       
    99     public ResCloseable(ResCloseable tr) {
       
   100         bOpen = true;
       
   101         msg = tr.getMsg();
       
   102     }
       
   103 
       
   104     public ResCloseable(String s) {
       
   105         bOpen = true;
       
   106         msg = s;
       
   107     }
       
   108 
       
   109     public ResCloseable(String msg, int c) {
       
   110         bOpen = true;
       
   111         if (c == 3) {
       
   112             throw new RuntimeException(msg);
       
   113         }
       
   114     }
       
   115 
       
   116     @Override
       
   117     public void close() {
       
   118         bOpen = false;
       
   119     }
       
   120 
       
   121     public boolean isOpen() {
       
   122         return bOpen;
       
   123     }
       
   124 
       
   125     public String getMsg() {
       
   126         return msg;
       
   127     }
       
   128 }
       
   129