无法获取默认构造函数

Question

我在运行单元测试项目时遇到以下问题。

Unable to get Default Constructor For class ********

[TestClass]
public class PersonRegistration
{
    private ILoggingService _loggingService;
    private IUserManager _userManager;
    public PersonRegistration(IUserManager userManager, ILoggingService loggingService)
    {
        this._userManager = userManager;
        this._loggingService = loggingService;
    }
    [TestMethod]
    public void TestMethod1()
    {
        RegisterBindingModel model = new RegisterBindingModel();
        AccountController ac = new AccountController(_userManager, _loggingService);
        model.UserName = "test123@gmail.com";
        var result = ac.Register(model);
        Assert.AreEqual("User Registered Successfully", result);
    }

如何解决这个问题。一些答案说要使用无参数构造函数。但是这里我需要参数。

RegisterBindingModel()

public class RegisterBindingModel
{
    public RegisterBindingModel();
    [Display(Name = "User name")]
    [Required]
    public string UserName { get; set; }
}

问题

Answer 1

你应该使用像 Moq 这样的模拟框架。

示例：

[TestClass]
public class PersonRegistration
{

    [TestMethod]
    public void TestMethod()
    {
        RegisterBindingModel model = new RegisterBindingModel();

        var mockService = new Mock<ILoggingService>();//Mock
   //Do something as per your requirement 
   //var reg= new List<RegisterBindingModel >(); // provide some sample list 
    //mockService .Setup(r => r.GetAll=()).Return(reg);

        var mockManager = new Mock<IUserManager>();//Mock

    //Do something as per your requirement 
    //var user= new List<User>(); // provide some sample list 
    //mockManager .Setup(r => r.GetAll=()).Return(user);

        AccountController ac = new AccountController(mockManager.Object, mockService.Object);
        model.UserName = "test123@gmail.com";
        var result = ac.Register(model);
        Assert.AreEqual("User Registered Successfully", result);
    }
}

您可以通过 this and this link.

获得帮助

Answer 2

我刚刚在单元测试中对此进行了测试。

添加

public PersonRegistration()
{
}

它应该运行没问题。

您的单元测试类不需要构造函数。如果您使用的是像 Moq 这样的模拟框架，那么我会使用工厂来 return 我正在测试的类的相关最小起订量。

 public ILoggingService ReturnMockLoggingService()
 {
       var mockService = new Mock<ILoggingService>();
       return mockService.Object;
 }

然后在测试夹具中。

[TestMethod]
public void TestMethod1()
{
    RegisterBindingModel model = new RegisterBindingModel();

    var logService = MockFactory.ReturnMockLoggingService();
    var userService = MockFactory.ReturnMockUserService();
    AccountController ac = new AccountController(userService, logService);

    model.UserName = "test123@gmail.com";
    var result = ac.Register(model);
    Assert.AreEqual("User Registered Successfully", result);
}

如果您不使用模拟，则只需在测试中实例化用户和日志服务或创建一个设置。

[ClassInitialize]
public void SetUp()
{
    _loggingService = new LoggingService();
    _userManager = new UserManager();
}

希望对您有所帮助。

无法获取默认构造函数

Unable to get Default Constructor

c#

asp.net

asp.net-mvc

constructor

default-constructor