ConfigFileWarning.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 7167142
 * @summary Warn if unused .hotspot_rc file is present
 * @library /testlibrary
 * @modules java.base/sun.misc
 *          java.management
 */

import java.io.PrintWriter;
import com.oracle.java.testlibrary.*;

public class ConfigFileWarning {
    public static void main(String[] args) throws Exception {
        PrintWriter pw;
        ProcessBuilder pb;
        OutputAnalyzer output;

        pw = new PrintWriter("hs_flags.txt");
        pw.println("aaa");
        pw.close();

        pb = ProcessTools.createJavaProcessBuilder("-XX:Flags=hs_flags.txt","-version");
        output = new OutputAnalyzer(pb.start());
        output.shouldContain("Unrecognized VM option 'aaa'");
        output.shouldHaveExitValue(1);

        // Skip on debug builds since we'll always read the file there
        if (!Platform.isDebugBuild()) {
            pw = new PrintWriter(".hotspotrc");
            pw.println("aa");
            pw.close();

            pb = ProcessTools.createJavaProcessBuilder("-version");
            output = new OutputAnalyzer(pb.start());
            output.shouldContain("warning: .hotspotrc file is present but has been ignored.  Run with -XX:Flags=.hotspotrc to load the file.");
        }
    }
}