如果ProductService
要先模拟,则需要注入此依赖项。
构造函数注入是 ASP.NET MVC 中控制器最常用的方法。
public class YourController : Controller
{
private readonly IProductService ProductService;
/// <summary>
/// Constructor injection
/// </summary>
public YourController(IProductService productService)
{
ProductService = productService;
}
/// <summary>
/// Code of this method has not been changed at all.
/// </summary>
public ActionResult Products()
{
ViewBag.Title = "Company Product";
IEnumerable<ProductDetailDto> productList = ProductService.GetAllEffectiveProductDetails();
ProductModels.ProductCategoryListModel model = new ProductModels.ProductCategoryListModel
{
//the type of ProductDetails => IEnumerable<productDetailDto>
ProductDetails = ProductService.GetAllEffectiveProductDetails(),
//the type of ProductCategoryList => IEnumerable<selectlistitem>
ProductCategoryList = productList.Select(x => new SelectListItem
{
Value = x.FKProductId.ToString(),
Text = x.Name
})
};
return View(model);
}
}
#region DataModels
public class ProductDetailDto
{
public int FKProductId { get; set; }
public string Name { get; set; }
}
public class ProductModels
{
public class ProductCategoryListModel
{
public IEnumerable<ProductDetailDto> ProductDetails { get; set; }
public IEnumerable<SelectListItem> ProductCategoryList { get; set; }
}
}
#endregion
#region Services
public interface IProductService
{
IEnumerable<ProductDetailDto> GetAllEffectiveProductDetails()
}
public class ProductService : IProductService
{
public IEnumerable<ProductDetailDto> GetAllEffectiveProductDetails()
{
throw new NotImplementedException();
}
}
#endregion
然后您可以轻松地创建一个模拟实例IProductService
,将其传递给 的构造函数YourController
,设置GetAllEffectiveProductDetails
方法并检查返回ActionResult
的及其model
.
[TestClass]
public class YourControllerTest
{
private Mock<IProductService> productServiceMock;
private YourController target;
[TestInitialize]
public void Init()
{
productServiceMock = new Mock<IProductService>();
target = new YourController(
productServiceMock.Object);
}
[TestMethod]
public void Products()
{
//arrange
// There is a setup of 'GetAllEffectiveProductDetails'
// When 'GetAllEffectiveProductDetails' method is invoked 'expectedallProducts' collection is exposed.
var expectedallProducts = new List<ProductDetailDto> { new ProductDetailDto() };
productServiceMock
.Setup(it => it.GetAllEffectiveProductDetails())
.Returns(expectedallProducts);
//act
var result = target.Products();
//assert
var model = (result as ViewResult).Model as ProductModels.ProductCategoryListModel;
Assert.AreEqual(model.ProductDetails, expectedallProducts);
/* Any other assertions */
}
}