public void Cost_ReturnsCorrectView_True()
{
ParcelsController controller = new ParcelsController();
IActionResult indexView = controller.Cost(2, 2, 2, 2);
Assert.IsInstanceOfType(indexView, typeof(ViewResult));
}
public void Cost_HasCorrectModelType_ShippingItem()
{
//Arrange
ParcelsController controller = new ParcelsController();
ViewResult costDataType = controller.Cost(2, 2, 2, 2) as ViewResult;
//Act
var result = costDataType.ViewData.Model;
//Assert
Assert.IsInstanceOfType(result, typeof(ShippingItem));
}