TestVerifySilently.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package gc;

/* @test TestVerifySilently.java
 * @bug 8032771
 * @summary Test silent verification.
 * @requires vm.gc != "Z"
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 * @run main gc.TestVerifySilently
 */

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import java.util.ArrayList;
import java.util.Collections;
import jdk.test.lib.Utils;

class TestVerifySilentlyRunSystemGC {
  public static void main(String args[]) throws Exception {
    System.gc();
  }
}


public class TestVerifySilently {

  private static OutputAnalyzer runTest(boolean verifySilently) throws Exception {
    ArrayList<String> vmOpts = new ArrayList<>();

    Collections.addAll(vmOpts, Utils.getFilteredTestJavaOpts("-Xlog.*"));
    Collections.addAll(vmOpts, new String[] {"-XX:+UnlockDiagnosticVMOptions",
                                             "-XX:+VerifyDuringStartup",
                                             "-XX:+VerifyBeforeGC",
                                             "-XX:+VerifyAfterGC",
                                             (verifySilently ? "-Xlog:gc":"-Xlog:gc+verify=debug"),
                                             TestVerifySilentlyRunSystemGC.class.getName()});
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts);
    OutputAnalyzer output = new OutputAnalyzer(pb.start());

    System.out.println("Output:\n" + output.getOutput());
    return output;
  }


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

    OutputAnalyzer output;

    output = runTest(false);
    output.shouldContain("Verifying");
    output.shouldHaveExitValue(0);

    output = runTest(true);
    output.shouldNotContain("Verifying");
    output.shouldHaveExitValue(0);
  }
}