https://docs.abp.io/en/abp/latest/Testing#example-testing-an-application-service
ABP Framework version: v4.2.2
UI type: MVC
DB provider: EF Core
Tiered (MVC) or Identity Server Separated (Angular): yes
Exception message and stack trace:
Autofac.Core.DependencyResolutionException: 'An exception was thrown while activating Siemens.NMM.Saas.Host.NMMTenantAppService.'
-InnerException {"None of the constructors found with 'Volo.Abp.Autofac.AbpAutofacConstructorFinder' on type 'Siemens.NMM.Saas.Host.NMMTenantAppService' can be invoked with the available services and parameters:\r\nCannot resolve parameter 'Microsoft.AspNetCore.Hosting.IWebHostEnvironment hosting' of constructor 'Void .ctor(Volo.Saas.Editions.IEditionRepository, Volo.Saas.Tenants.ITenantRepository, Volo.Saas.Tenants.ITenantManager, Volo.Abp.Data.IDataSeeder, Microsoft.Extensions.Configuration.IConfiguration, Microsoft.AspNetCore.Hosting.IWebHostEnvironment)'."} System.Exception {Autofac.Core.DependencyResolutionException}
Steps to reproduce the issue: I just override TenantAppService which is coming from Saas Module. Changes are very simple, one overriding of existing method, one totally new method
Now i would like to add tests related with those 2 method therefore i created Service Tests which inherits from Application Test Base
GetRequiredService<INMMTenantAppService>(); not able to resolve service.
What am i missing ?
2 Answer(s)
-
0
Be aware that Unit Test module will not initialize when you are using a real
IWebHostEnvironment. And you have aIWebHostEnvironmentargument in the constructor of the ApplicationService. You need to mockWebHostEnvironmentin order to get it run. Because there's no real WebHostEnvironment in the test phase:
Mock class for
IWebHostEnvironment:WebHostEnvironmentMock.cs
public class WebHostEnvironmentMock : IWebHostEnvironment { public string EnvironmentName { get; set; } public string ApplicationName { get; set; } public string ContentRootPath { get; set; } public IFileProvider ContentRootFileProvider { get; set; } public IFileProvider WebRootFileProvider { get; set; } public string WebRootPath { get; set; } public WebHostEnvironmentMock() { var absoluteRootPath = Path.GetFullPath(string.Format("..{0}..{0}..{0}..{0}..{0}src{0}Siemens.NMM.Web, System.IO.Path.DirectorySeparatorChar)); ContentRootPath = absoluteRootPath; //absolute path to your Web project WebRootPath = Path.Combine(absoluteRootPath, "wwwroot"); //this should point to wwwroot of your Web project } }
Replace the implementation of
IWebHostEnvironmentto your mock class:NMMApplicationTestModule.cs
public class NMMWebTestModule : AbpModule { public override void ConfigureServices(ServiceConfigurationContext context) { var configuration = context.Services.GetConfiguration(); context.Services.AddSingleton<IWebHostEnvironment>(new WebHostEnvironmentMock()); } } -
0
Thx Alper. Somehow i thought that i override TenantAppService as it is. I forgot webhost and configuration injections..
