public void GetAllLinksExceptionTest()
{
_helpRepoMock.Setup(x => x.GetAllLinks()).Throws <Exception>();
var response = _helpService.GetAllLinks();
_mapperMock.Verify(x => x.Map <IList <HelpLinkDto> >(It.IsAny <IList <HelpLink> >()), Times.Never);
Assert.IsNotNull(response);
Assert.AreEqual(ResponseCode.ServerError, response.Code);
Assert.IsNotEmpty(response.ErrorMessage);
Assert.IsNull(response.Entity);
}