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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

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 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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 */

package gc.arguments;

/*

 * @test TestDisableDefaultGC

 * @summary Test that the VM complains when the default GC is disabled and no other GC is specified

 * @bug 8068579

 * @key gc

 * @library /test/lib

 * @library /

 * @requires vm.gc=="null"

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run driver gc.arguments.TestDisableDefaultGC

 */

import jdk.test.lib.process.OutputAnalyzer;

public class TestDisableDefaultGC {

    public static void main(String[] args) throws Exception {

        // Start VM, disabling all possible default GCs

        ProcessBuilder pb = GCArguments.createJavaProcessBuilder("-XX:-UseSerialGC",

                                                                 "-XX:-UseParallelGC",

                                                                 "-XX:-UseG1GC",

                                                                 "-XX:+UnlockExperimentalVMOptions",

                                                                 "-XX:-UseShenandoahGC",

                                                                 "-XX:-UseZGC",

                                                                 "-version");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldMatch("Garbage collector not selected");

        output.shouldHaveExitValue(1);

    }

}