public async Task CreateAppointmentSlotAsync_should_return_success() { var result = await sut !.CreateAppointmentSlotAsync(new LocalDateTime(2021, 5, 1, 10, 0), Period.FromHours(1), 1); Assert.IsTrue(result.Succeeded); var slot = await db !.Slots.FirstAsync(); Assert.AreEqual(new LocalDateTime(2021, 5, 1, 10, 0), slot.From); Assert.AreEqual(Period.FromHours(1), slot.Duration); Assert.AreEqual(1, slot.CountOfSlot); }