Test.cs

[Fact]
public async Task TestWithDelegate()
{
    var utcNow = new DateTimeOffset(new DateTime(2022, 11, 28));

    var obj = new OrderServiceDelegate(_mockBasketRepo.Object, _mockCatalogRepo.Object, _mockOrderRepo.Object, 
        _mockUriComposer.Object, () => utcNow);

    var address = new Address("120 Freidrich Lane", "Austin", "TX", "US", "78744");
    var order = await obj.CreateOrderAsync(_basketId, address);

    Assert.Equal(utcNow, order.OrderDate);
}