public class FakeScheduleDayProvider : IScheduleDayProvider
    {
        private readonly List<ScheduleDayReference> _existedScheduleDayReferences = new List<ScheduleDayReference>{
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000001"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b0"),
                new DateTime(2019,1,1,0,0,0),
                new DateTime(2019,1,1,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 1, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000002"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b0"),
                new DateTime(2019,1,2,0,0,0),
                new DateTime(2019,1,2,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 2, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000003"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b0"),
                new DateTime(2019,1,3,0,0,0),
                new DateTime(2019,1,3,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 3, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000004"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b0"),
                new DateTime(2019,1,4,0,0,0),
                new DateTime(2019,1,4,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 4, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000005"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b0"),
                new DateTime(2019,1,5,0,0,0),
                new DateTime(2019,1,5,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 5, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000006"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b7"),
                new DateTime(2019,1,1,0,0,0),
                new DateTime(2019,1,1,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 1, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000007"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b7"),
                new DateTime(2019,1,2,0,0,0),
                new DateTime(2019,1,2,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 2, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000008"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b7"),
                new DateTime(2019,1,3,0,0,0),
                new DateTime(2019,1,3,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 3, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000009"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b7"),
                new DateTime(2019,1,4,0,0,0),
                new DateTime(2019,1,4,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 4, 0, 0, 0)),
            new ScheduleDayReference(Guid.Parse("00000000-0000-0000-1000-000000000010"), Guid.Parse("c717b6f8-174e-4b08-b12a-821bdbafa6b7"),
                new DateTime(2019,1,5,0,0,0),
                new DateTime(2019,1,5,0,0,0).AddDays(1).AddSeconds(-1),
                new DateTime(2019, 1, 5, 0, 0, 0))
        };