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23 
24 package gc.arguments;
25 
26 /*
27  * @test TestUnrecognizedVMOptionsHandling
28  * @key gc
29  * @bug 8017611
30  * @summary Tests handling unrecognized VM options
31  * @library /test/lib
32  * @library /
33  * @modules java.base/jdk.internal.misc
34  *          java.management
35  * @run main/othervm gc.arguments.TestUnrecognizedVMOptionsHandling
36  */
37 
38 import jdk.test.lib.process.OutputAnalyzer;
39 import jdk.test.lib.process.ProcessTools;
40 
41 public class TestUnrecognizedVMOptionsHandling {
42 
main(String args[])43   public static void main(String args[]) throws Exception {
44     // The first two JAVA processes are expected to fail, but with a correct VM option suggestion
45     ProcessBuilder pb = GCArguments.createJavaProcessBuilder(
46       "-XX:+UseDynamicNumberOfGcThreads",
47       "-version"
48       );
49     OutputAnalyzer outputWithError = new OutputAnalyzer(pb.start());
50     outputWithError.shouldContain("Did you mean '(+/-)UseDynamicNumberOfGCThreads'?");
51     if (outputWithError.getExitValue() == 0) {
52       throw new RuntimeException("Not expected to get exit value 0");
53     }
54 
55     pb = GCArguments.createJavaProcessBuilder(
56       "-XX:MaxiumHeapSize=500m",
57       "-version"
58       );
59     outputWithError = new OutputAnalyzer(pb.start());
60     outputWithError.shouldContain("Did you mean 'MaxHeapSize=<value>'?");
61     if (outputWithError.getExitValue() == 0) {
62       throw new RuntimeException("Not expected to get exit value 0");
63     }
64 
65     // The last JAVA process should run successfully for the purpose of sanity check
66     pb = GCArguments.createJavaProcessBuilder(
67       "-XX:+UseDynamicNumberOfGCThreads",
68       "-version"
69       );
70     OutputAnalyzer outputWithNoError = new OutputAnalyzer(pb.start());
71     outputWithNoError.shouldNotContain("Did you mean '(+/-)UseDynamicNumberOfGCThreads'?");
72     outputWithNoError.shouldHaveExitValue(0);
73   }
74 }
75 
76