public async Task AddToRoleAsync()
{
using (var uow = _unitOfWorkManager.Begin())
{
var user = await _userRepository.FindByNormalizedUserNameAsync(_lookupNormalizer.Normalize("david"));
user.ShouldNotBeNull();
user.Roles.ShouldBeEmpty();
await _identityUserStore.AddToRoleAsync(user, _lookupNormalizer.Normalize("moderator"));
user.Roles.ShouldContain(x => x.RoleId == _testData.RoleModeratorId);
await uow.CompleteAsync();
}
}