public async Task GetContacts() { try { var contacts = await service.GetContactsAsync(DateTime.MinValue, 200); Assert.IsNotNull(contacts); Assert.IsTrue(contacts.LastUpdated < DateTime.Now + TimeSpan.FromMinutes(1), $"LastUpdated: {contacts.LastUpdated}, Time: {DateTime.Now}"); Assert.IsTrue(contacts.LastUpdated > DateTime.MinValue); } catch (YouMailException yme) { Assert.Fail(yme.Message); } }