/*

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

 * @bug     4858522

 * @summary Basic unit test of OperatingSystemMXBean.getTotalSwapSpaceSize()

 * @author  Steve Bohne

 */

/*

 * This test tests the actual swap size on linux and solaris.

 * The correct value should be checked manually:

 * Solaris:

 *   1. In a shell, enter the command: "swap -l"

 *   2. The value (reported in blocks) is in the "blocks" column.

 * Linux:

 *   1. In a shell, enter the command: "cat /proc/meminfo"

 *   2. The value (reported in bytes) is in "Swap" entry, "total" column.

 * Windows NT/XP/2000:

 *   1. Run Start->Accessories->System Tools->System Information.

 *   2. The value (reported in Kbytes) is in the "Page File Space" entry

 * Windows 98/ME:

 *   Unknown.

 *

 * Usage: GetTotalSwapSpaceSize <expected swap size | "sanity-only"> [trace]

 */

import com.sun.management.OperatingSystemMXBean;

import java.lang.management.*;

        (com.sun.management.OperatingSystemMXBean)

        ManagementFactory.getOperatingSystemMXBean();

    // Careful with these values.

    // Min size for pass dynamically determined below.

    // zero if no swap space is configured.

    private static long       min_size_for_pass = 0;

    private static final long MAX_SIZE_FOR_PASS = Long.MAX_VALUE;

        long min_size = mbean.getFreeSwapSpaceSize();

        if (min_size > 0) {

            min_size_for_pass = min_size;

        }

        long size = mbean.getTotalSwapSpaceSize();

            if (size != expected_swap_size) {

                throw new RuntimeException("Expected total swap size      : " +

                                           expected_swap_size +

                                           " but getTotalSwapSpaceSize returned: " +

                                           size);

            }

        }

        if (size < min_size_for_pass || size > MAX_SIZE_FOR_PASS) {

            throw new RuntimeException("Total swap space size " +

                                       "illegal value: " + size + " bytes " +

                                       "(MIN = " + min_size_for_pass + "; " +

                                       "MAX = " + MAX_SIZE_FOR_PASS + ")");

        }

        System.out.println("Test passed.");

    }

}