public async Task AssertThatGetUserIncomesPerYearCallsFindBetsByUseAndReturnsNotEmptyList()
        {
            _betDao.FindBetsByUser(Arg.Any <User>(), Arg.Any <int>()).Returns(Task.FromResult(_betsByUser));

            var getUserIncomesPerYear = await _betManager.GetUserIncomesPerYear(_user);

            await _betDao.Received().FindBetsByUser(Arg.Any <User>(), Arg.Any <int>());

            Assert.IsNotEmpty(getUserIncomesPerYear);
        }