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23 
24 package gc.arguments;
25 
26 /*
27  * @test TestDisableDefaultGC
28  * @summary Test that the VM complains when the default GC is disabled and no other GC is specified
29  * @bug 8068579
30  * @key gc
31  * @library /test/lib
32  * @library /
33  * @requires vm.gc=="null"
34  * @modules java.base/jdk.internal.misc
35  *          java.management
36  * @run driver gc.arguments.TestDisableDefaultGC
37  */
38 
39 import jdk.test.lib.process.OutputAnalyzer;
40 
41 public class TestDisableDefaultGC {
main(String[] args)42     public static void main(String[] args) throws Exception {
43         // Start VM, disabling all possible default GCs
44         ProcessBuilder pb = GCArguments.createJavaProcessBuilder("-XX:-UseSerialGC",
45                                                                  "-XX:-UseParallelGC",
46                                                                  "-XX:-UseG1GC",
47                                                                  "-XX:+UnlockExperimentalVMOptions",
48                                                                  "-XX:-UseShenandoahGC",
49                                                                  "-XX:-UseZGC",
50                                                                  "-version");
51         OutputAnalyzer output = new OutputAnalyzer(pb.start());
52         output.shouldMatch("Garbage collector not selected");
53         output.shouldHaveExitValue(1);
54     }
55 }
56