1 /*
   2  * Copyright (c) 2002, 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 package p;
  25 
  26 import java.io.*;
  27 import com.sun.tools.javadoc.Main;
  28 
  29 public class OutputRedirect {

  30 
  31     public static void main(String[] args) {
  32         PrintStream originalOutput = System.out;
  33         try {
  34             doTest();
  35         } finally {
  36             // restore things
  37             System.setOut(originalOutput);
  38         }
  39     }
  40 
  41     static void doTest() {
  42         ByteArrayOutputStream redirectedOutput = new ByteArrayOutputStream();
  43         PrintStream originalOutput = System.out;
  44 
  45         // redirect System.out to a buffer
  46         System.setOut(new PrintStream(redirectedOutput));
  47 
  48         PrintWriter sink = new PrintWriter(new ByteArrayOutputStream());
  49 
  50         // execute javadoc
  51         int result = Main.execute("javadoc", sink, sink, sink,
  52                                   "com.sun.tools.doclets.standard.Standard",
  53                                   new String[] {"p"}
  54                                   );
  55 
  56 
  57         // test whether javadoc did any output to System.out
  58         if (redirectedOutput.toByteArray().length > 0) {
  59             originalOutput.println("Test failed; here's what javadoc wrote on its standard output:");
  60             originalOutput.println(redirectedOutput.toString());
  61             throw new Error("javadoc output wasn\'t properly redirected");
  62         } else if (result != 0) {
  63             throw new Error("javadoc run failed");
  64         } else {
  65             originalOutput.println("OK, good");
  66         }
  67     }
  68 }

   1 /*
   2  * Copyright (c) 2002, 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 package p;
  25 
  26 import java.io.*;
  27 import jdk.javadoc.internal.tool.Main;
  28 
  29 public class OutputRedirect {
  30     private static final PrintStream originalOutput = System.err;
  31 
  32     public static void main(String[] args) {

  33         try {
  34             doTest();
  35         } finally {
  36             // restore things
  37             System.setOut(originalOutput);
  38         }
  39     }
  40 
  41     static void doTest() {
  42         ByteArrayOutputStream redirectedOutput = new ByteArrayOutputStream();

  43 
  44         // redirect System.err to a buffer
  45         System.setErr(new PrintStream(redirectedOutput));
  46 
  47         PrintWriter sink = new PrintWriter(new ByteArrayOutputStream());
  48 
  49         // execute javadoc
  50         int result = Main.execute(new String[] {"p"}, sink);



  51 

  52         // test whether javadoc did any output to System.out
  53         if (redirectedOutput.toByteArray().length > 0) {
  54             originalOutput.println("Test failed; here's what javadoc wrote on its standard output:");
  55             originalOutput.println(redirectedOutput.toString());
  56             throw new Error("javadoc output wasn\'t properly redirected");
  57         } else if (result != 0) {
  58             throw new Error("javadoc run failed");
  59         } else {
  60             originalOutput.println("OK, good");
  61         }
  62     }
  63 }