你如何在 abp 框架中使用 nSubstitute 模拟依赖关系，

Question

在 Abp 框架中，我正在尝试为我的 FamilyAppService class 编写一个测试（见下文）。我需要在 FamilyAppService 的构造函数中模拟一个 IAutho 实例。我尝试模拟 IAutho，然后将其添加到 FamilyAppService 的新实例（而不是使用 GetRequiredService()），但我收到 ObjectMapper 的 'System.ArgumentNullException' 错误。

家庭应用服务Class

     public class FamilyAppService : KmAppService, IFamilyAppService { 
        private readonly IAutho autho;

        public FamilyAppService( 
            IAutho autho) {
 
            this.autho = autho;
        } 

        public virtual async Task SendRequest(SendRequestInput input) {
             var family = ObjectMapper.Map<FamilyDto, Family>(input.Family);
             // code ...
             await autho.FindUserIdByEmail(family.Email); 
        }
    }

作者 Class。我需要使用 nSubstitute

将 IAutho 依赖项替换为 Mocked class

public class Autho : IAutho, ITransientDependency { 

        public Autho( ) {
           
        } 

        public virtual async Task<User> FindUserIdByEmail(string input) { 
            // Don’t  want this code touched in test 
            // Code ...
        }
 
    }

我目前的测试...

  [Fact]
        public async Task ShouldSendEmail() {
  
            var autho = Substitute.For<IAutho>();
            autho.FindUserIdByEmail(Arg.Any<string>()).Returns((User)null);  
    
            var familyAppService = new FamilyAppService(autho);
            // var familyAppService = GetRequiredService<IFamilyAppService>();

            // setup input code here..
            // get ObjectMapper error here
            await familyAppService.SendRequest(input);
 
            // Assert  
        }

Answer 1

github abp repo 的一位成员给了我正确的答案。您需要覆盖测试 class 上的 AfterAddApplication 方法并将 substitue/mock 添加到 services.AddSingletone.

示例...

        protected override void AfterAddApplication(IServiceCollection services) {
 
            var autho = Substitute.For<IAutho>();
            autho.FindUserIdByEmail(Arg.Any<string>()).Returns((User)null);

            services.AddSingleton(autho);
        }

你如何在 abp 框架中使用 nSubstitute 模拟依赖关系，

How do you mock a dependency using nSubstitute in abp framework,

c#

testing

nsubstitute

abp