[Fact] public void IsItWeekend() { // Arrange var fakeTimeProvider = new FakeTimeProvider(); // Set the current UTC time fakeTimeProvider.SetUtcNow(new DateTime(2024, 2, 7)); fakeTimeProvider.SetLocalTimeZone(TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time")); // Act var result = new Calendar(fakeTimeProvider); //Assert Assert.False(result.IsItWeekend()); }