1 /*
   2  * Copyright (c) 2014, 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 4386360
  27   @summary tests that DataFlavor.selectBestTextFlavor() returns null when passed
  28            is a null array or an empty array or an array which doesn't contain
  29            a text flavor in a supported encoding.
  30   @author das@sparc.spb.su area=datatransfer
  31   @run main SelectBestTextFlavorBadArrayTest
  32 */
  33 
  34 import java.awt.datatransfer.DataFlavor;
  35 import java.util.Stack;
  36 import java.util.stream.Collectors;
  37 
  38 public class SelectBestTextFlavorBadArrayTest {
  39 
  40     public static void main(String[] args) {
  41         final String[] failureMessages = {
  42             "DataFlavor.selectBestTextFlavor(null) doesn't return null.",
  43             "DataFlavor.selectBestTextFlavor() doesn't return null for an empty array.",
  44             "DataFlavor.selectBestTextFlavor() shouldn't return flavor in an unsupported encoding."
  45         };
  46         Stack<String> failures = new Stack<>();
  47 
  48         DataFlavor flavor = DataFlavor.selectBestTextFlavor(null);
  49         if (flavor != null) {
  50             failures.push(failureMessages[0]);
  51         }
  52         flavor = DataFlavor.selectBestTextFlavor(new DataFlavor[0]);
  53         if (flavor != null) {
  54             failures.push(failureMessages[1]);
  55         }
  56 
  57         try {
  58             flavor = DataFlavor.selectBestTextFlavor(new DataFlavor[]
  59                 { new DataFlavor("text/plain; charset=unsupported; class=java.io.InputStream") });
  60         } catch (ClassNotFoundException e) {
  61             e.printStackTrace();
  62             failures.push("Exception thrown: " + e.toString());
  63         }
  64         if (flavor != null) {
  65             failures.push(failureMessages[2]);
  66         }
  67 
  68         if (failures.size() > 0) {
  69             String failureReport = failures.stream().collect(Collectors.joining("\n"));
  70             throw new RuntimeException("TEST FAILED: \n" + failureReport);
  71         }
  72     }
  73 }