1 /*
   2  * Copyright (c) 2016, 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
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  23 
  24 /*
  25  * @test TestDisableDefaultGC
  26  * @summary Test that the VM complains when the default GC is disabled and no other GC is specified
  27  * @bug 8068579
  28  * @key gc
  29  * @library /test/lib
  30  * @requires vm.gc=="null"
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @run driver TestDisableDefaultGC
  34  */
  35 
  36 import jdk.test.lib.process.ProcessTools;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class TestDisableDefaultGC {
  40     public static void main(String[] args) throws Exception {
  41         // Start VM, disabling all possible default GCs
  42         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:-UseSerialGC",
  43                                                                   "-XX:-UseParallelGC",
  44                                                                   "-XX:-UseG1GC",
  45                                                                   "-XX:-UseConcMarkSweepGC",
  46                                                                   "-XX:+UnlockExperimentalVMOptions",
  47                                                                   "-XX:-UseShenandoahGC",
  48                                                                   "-XX:-UseZGC",
  49                                                                   "-version");
  50         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  51         output.shouldMatch("Garbage collector not selected");
  52         output.shouldHaveExitValue(1);
  53     }
  54 }