public void Get_AssetPrice_Of_DistributionCenter()
{
var inv = GetInventories().AsQueryable();
var center = GetDistributionCenters().FirstOrDefault(c => c.Id == 2);
var asset = 3;
var mockDbSet = new Mock <DbSet <Inventory> >();
mockDbSet.As <IQueryable <Inventory> >().Setup(p => p.Provider).Returns(inv.Provider);
mockDbSet.As <IQueryable <Inventory> >().Setup(p => p.Expression).Returns(inv.Expression);
mockDbSet.As <IQueryable <Inventory> >().Setup(p => p.ElementType).Returns(inv.ElementType);
mockDbSet.As <IQueryable <Inventory> >().Setup(p => p.GetEnumerator()).Returns(inv.GetEnumerator);
var mockContext = new Mock <RentalContext>();
mockContext.Setup(r => r.Inventory).Returns(mockDbSet.Object);
var service = new DistributionService(mockContext.Object);
var assetPrice = service.GetAssetPrice(center.Id, asset);
assetPrice.Should <double>().Be(200.0);
}