public void ReturnItemReturnNotRented()
{
var data = new List <Item>
{
new Item {
Id = 1, Name = "First"
}
}.AsQueryable();
var mockSet = new Mock <DbSet <Item> >();
mockSet.As <IQueryable <Item> >().Setup(m => m.Provider).Returns(data.Provider);
mockSet.As <IQueryable <Item> >().Setup(m => m.Expression).Returns(data.Expression);
mockSet.As <IQueryable <Item> >().Setup(m => m.ElementType).Returns(data.ElementType);
mockSet.As <IQueryable <Item> >().Setup(m => m.GetEnumerator()).Returns(data.GetEnumerator());
var mockContext = new Mock <SkiResortContext>();
mockContext.Setup(c => c.Items).Returns(mockSet.Object);
var controller = new RentalController(mockContext.Object);
var item = controller.GetItem(1);
controller.ReturnItem(item.Id);
Assert.AreEqual("Not Rented", item.Status);
}