1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   7  * published by the Free Software Foundation.
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  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
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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 /testlibrary
  30  * @requires vm.gc=="null"
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  * @run driver TestDisableDefaultGC
  34  */
  35 
  36 import jdk.test.lib.*;
  37 
  38 public class TestDisableDefaultGC {
  39     public static void main(String[] args) throws Exception {
  40         // Start VM, disabling all possible default GCs
  41         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:-UseSerialGC",
  42                                                                   "-XX:-UseParallelGC",
  43                                                                   "-XX:-UseG1GC",
  44                                                                   "-XX:-UseConcMarkSweepGC",
  45                                                                   "-version");
  46         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  47         output.shouldMatch("Garbage collector not selected");
  48         output.shouldHaveExitValue(1);
  49     }
  50 }