public void testUpdatePersistentAuthorization() {

    TestResource resource1 = new TestResource("resource1", 100);
    TestResource resource2 = new TestResource("resource1", 101);

    Authorization authorization = authorizationService.createNewAuthorization(AUTH_TYPE_GRANT);
    authorization.setUserId("aUserId");
    authorization.setResource(resource1);
    authorization.setResourceId("aResourceId");
    authorization.addPermission(ACCESS);

    // save the authorization
    authorizationService.saveAuthorization(authorization);

    // validate authorization
    Authorization savedAuthorization =
        authorizationService.createAuthorizationQuery().singleResult();
    assertEquals("aUserId", savedAuthorization.getUserId());
    assertEquals(resource1.resourceType(), savedAuthorization.getResourceType());
    assertEquals("aResourceId", savedAuthorization.getResourceId());
    assertTrue(savedAuthorization.hasPermission(ACCESS));

    // update authorization
    savedAuthorization.setUserId("anotherUserId");
    savedAuthorization.setResource(resource2);
    savedAuthorization.setResourceId("anotherResourceId");
    savedAuthorization.addPermission(DELETE);
    authorizationService.saveAuthorization(savedAuthorization);

    // validate authorization updated
    savedAuthorization = authorizationService.createAuthorizationQuery().singleResult();
    assertEquals("anotherUserId", savedAuthorization.getUserId());
    assertEquals(resource2.resourceType(), savedAuthorization.getResourceType());
    assertEquals("anotherResourceId", savedAuthorization.getResourceId());
    assertTrue(savedAuthorization.hasPermission(ACCESS));
    assertTrue(savedAuthorization.hasPermission(DELETE));
  }