7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verify correctnes of the random generator from Utility.java
  27  * @library /testlibrary
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run driver RandomGeneratorTest SAME_SEED
  31  * @run driver RandomGeneratorTest NO_SEED
  32  * @run driver RandomGeneratorTest DIFFERENT_SEED
  33  */
  34 
  35 import java.io.FileWriter;
  36 import java.io.IOException;
  37 import java.io.PrintWriter;
  38 import java.util.ArrayList;
  39 import java.util.List;
  40 import java.util.Random;
  41 import jdk.test.lib.OutputAnalyzer;
  42 import jdk.test.lib.ProcessTools;
  43 import jdk.test.lib.Utils;
  44 
  45 /**
  46  * The test verifies correctness of work {@link jdk.test.lib.Utils#getRandomInstance()}.
  47  * Test works in three modes: same seed provided, no seed provided and
  48  * different seed provided. In the first case the test expects that all random numbers
  49  * will be repeated in all next iterations. For other two modes test expects that
  50  * randomly generated numbers differ from original.
  51  */
  52 public class RandomGeneratorTest {
  53     private static final String SEED_VM_OPTION = "-D" + Utils.SEED_PROPERTY_NAME + "=";
  54 
  55     public static void main( String[] args) throws Throwable {
  56         if (args.length == 0) {
  57             throw new Error("TESTBUG: No test mode provided.");
  58         }
  59         SeedOption seedOpt = SeedOption.valueOf(args[0]);
  60         List<String> jvmArgs = new ArrayList<String>();
  61         String optStr = seedOpt.getSeedOption();
  62         if (optStr != null) {

   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verify correctnes of the random generator from Utility.java
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run driver RandomGeneratorTest SAME_SEED
  31  * @run driver RandomGeneratorTest NO_SEED
  32  * @run driver RandomGeneratorTest DIFFERENT_SEED
  33  */
  34 
  35 import java.io.FileWriter;
  36 import java.io.IOException;
  37 import java.io.PrintWriter;
  38 import java.util.ArrayList;
  39 import java.util.List;
  40 import java.util.Random;
  41 import jdk.test.lib.process.OutputAnalyzer;
  42 import jdk.test.lib.process.ProcessTools;
  43 import jdk.test.lib.Utils;
  44 
  45 /**
  46  * The test verifies correctness of work {@link jdk.test.lib.Utils#getRandomInstance()}.
  47  * Test works in three modes: same seed provided, no seed provided and
  48  * different seed provided. In the first case the test expects that all random numbers
  49  * will be repeated in all next iterations. For other two modes test expects that
  50  * randomly generated numbers differ from original.
  51  */
  52 public class RandomGeneratorTest {
  53     private static final String SEED_VM_OPTION = "-D" + Utils.SEED_PROPERTY_NAME + "=";
  54 
  55     public static void main( String[] args) throws Throwable {
  56         if (args.length == 0) {
  57             throw new Error("TESTBUG: No test mode provided.");
  58         }
  59         SeedOption seedOpt = SeedOption.valueOf(args[0]);
  60         List<String> jvmArgs = new ArrayList<String>();
  61         String optStr = seedOpt.getSeedOption();
  62         if (optStr != null) {