@Override
 public List<String> getTestsByPrefix(String prefix) {
   List<Test> tests = testDAO.findByUIDPrefix(prefix);
   List<String> testuids = new ArrayList<String>();
   for (Test test : tests) {
     if (userService.isLoggedUserInGroup(test.getGroupId())) {
       testuids.add(test.getUid());
     }
   }
   return testuids;
 }
 @Override
 public Test createTest(Test test) throws ServiceException {
   if (!userService.isLoggedUserInGroup(test.getGroupId())) {
     throw new org.perfrepo.web.security.SecurityException(
         "securityException.userNotInGroup.createTest",
         userService.getLoggedUser().getUsername(),
         test.getGroupId());
   }
   if (testDAO.findByUid(test.getUid()) != null) {
     throw new ServiceException("serviceException.testUidExists", test.getUid());
   }
   Test createdTest = testDAO.create(test);
   // store metrics
   if (test.getMetrics() != null) {
     for (Metric metric : test.getMetrics()) {
       addMetric(test, metric);
     }
   }
   return createdTest;
 }