protected override IMvcFunctionalTestFixture GivenSetup(IMvcFunctionalTestFixture fixture) =>
fixture
.HavingFake(f => f.Date.Timespan(), out var futureOffset)
.HavingProperty(FutureOffset, futureOffset)
.HavingConfiguration(b => b.AddInMemoryCollection(new Dictionary <string, string>
{
[FutureOffset] = futureOffset.ToString()
}));