1 /*
   2  * Copyright (c) 2013, 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 import jdk.test.lib.process.OutputAnalyzer;
  25 import jdk.test.lib.process.ProcessTools;
  26 import jdk.test.lib.Platform;
  27 
  28 /*
  29  * @test
  30  * @bug 8015107
  31  * @summary Tests that VM prints a warning when -XX:CompressedClassSpaceSize
  32  *          is used together with -XX:-UseCompressedClassPointers
  33  * @library /test/lib
  34  * @modules java.base/jdk.internal.misc
  35  *          java.management
  36  */
  37 public class TestCompressedClassFlags {
  38     public static void main(String[] args) throws Exception {
  39         if (Platform.is64bit()) {
  40             OutputAnalyzer output = runJava("-XX:CompressedClassSpaceSize=1g",
  41                                             "-XX:-UseCompressedClassPointers",
  42                                             "-version");
  43             output.shouldContain("warning");
  44             output.shouldNotContain("error");
  45             output.shouldHaveExitValue(0);
  46         }
  47     }
  48 
  49     private static OutputAnalyzer runJava(String ... args) throws Exception {
  50         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
  51         return new OutputAnalyzer(pb.start());
  52     }
  53 }