1 /*
   2  * Copyright (c) 1998, 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 /* @test
  25    @bug 4152178
  26    @summary Check various temp-file prefix/suffix cases */
  27 
  28 import java.io.File;
  29 import java.io.IOException;
  30 
  31 public class Patterns {
  32 
  33     static File dir = new File(".");
  34 
  35     static void ckn(String prefix, String suffix) throws Exception {
  36         try {
  37             File f = File.createTempFile(prefix, suffix, dir);
  38             f.deleteOnExit();
  39         } catch (Exception x) {
  40             if ((x instanceof IOException)
  41                 || (x instanceof NullPointerException)
  42                 || (x instanceof IllegalArgumentException)) {
  43                 System.err.println("\"" + prefix + "\", \"" + suffix
  44                                    + "\" failed as expected: " + x.getMessage());
  45                 return;
  46             }
  47             throw x;
  48         }
  49         throw new Exception("\"" + prefix + "\", \"" + suffix
  50                             + "\" should have failed");
  51     }
  52 
  53     static void cky(String prefix, String suffix) throws Exception {
  54         File f = File.createTempFile(prefix, suffix, dir);
  55         f.deleteOnExit();
  56         System.err.println("\"" + prefix + "\", \"" + suffix
  57                            + "\" --> " + f.getPath());
  58     }
  59 
  60     public static void main(String[] args) throws Exception {
  61         ckn(null, null);
  62         ckn("", null);
  63         ckn("x", null);
  64         ckn("xx", null);
  65         cky("xxx", null);
  66         cky("xxx", "");
  67         cky("xxx", "y");
  68         cky("xxx", ".y");
  69     }
  70 
  71 }