@Test
  public void testVDBRestart() throws Exception {
    String vdbName = "test";
    String testVDB =
        "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
            + "<vdb name=\"test\" version=\"1\">\n"
            + "    <property name=\"UseConnectorMetadata\" value=\"cached\" />\n"
            + "    <model name=\"loopy\">\n"
            + "        <source name=\"loop\" translator-name=\"loopy\" />\n"
            + "    </model>\n"
            + "</vdb>";

    Collection<?> vdbs = admin.getVDBs();
    assertTrue(vdbs.isEmpty());

    JavaArchive jar = getLoopyArchive();
    admin.deploy("loopy.jar", jar.as(ZipExporter.class).exportAsInputStream());

    // normal load
    admin.deploy("test-vdb.xml", new ByteArrayInputStream(testVDB.getBytes()));
    AdminUtil.waitForVDBLoad(admin, vdbName, 1, 3);
    int count = assertMetadataLoadCount(false, 1);

    // 1st restart
    admin.restartVDB(vdbName, 1);
    AdminUtil.waitForVDBLoad(admin, vdbName, 1, 3);
    count = assertMetadataLoadCount(true, count + 1);

    // 2nd restart
    admin.restartVDB(vdbName, 1);
    AdminUtil.waitForVDBLoad(admin, vdbName, 1, 3);
    count = assertMetadataLoadCount(true, count + 1);

    admin.undeploy("loopy.jar");
  }