@Test
public void test_getSafeMetaData_failure() {

    Response response = getMockResponse(HttpStatus.OK, true, "");
    when(ControllerUtil.getSafeType("users/ert")).thenReturn("users");
    when(ControllerUtil.getSafeName("users/ert")).thenReturn("ert");
    when(ControllerUtil.getReqProcessor().process("/sdb", "{\"path\":\"metadata/users/ert\"}", "5PDrOhsy4ig8L3EpsJZSLAMg")).thenReturn(response);
    Safe safe = safeUtils.getSafeMetaData("5PDrOhsy4ig8L3EpsJZSLAMg", "users", "ert");
    assertNull(safe);
}