在自己的ServiceCollection中获取ServiceCollection
我在做fixture到我的tests。
在我的FixtureFactory我做我自己的ServiceCollection
private static ServiceCollection CreateServiceCollection()
{
var services = new ServiceCollection();
services.AddScoped<IConfiguration>();
services.AddScoped<ITokenService, TokenService>();
services.AddDbContext<TaskManagerDbContext>(o => o.UseInMemoryDatabase(Guid.NewGuid().ToString()));
services.AddIdentity<ApplicationUser, IdentityRole>(options =>
{
options.Password.RequiredLength = 6;
options.Password.RequireLowercase = false;
options.Password.RequireUppercase = false;
options.Password.RequireNonAlphanumeric = false;
options.Password.RequireDigit = false;
options.User.RequireUniqueEmail = true;
}).AddEntityFrameworkStores<TaskManagerDbContext>();
return services;
}然后，我从scope那里得到这个scope
var services = CreateServiceCollection().BuildServiceProvider().CreateScope();
var context = services.ServiceProvider.GetRequiredService<TaskManagerDbContext>();
var userManager = services.ServiceProvider.GetRequiredService<UserManager<ApplicationUser>>();
var roleManager = services.ServiceProvider.GetRequiredService<RoleManager<IdentityRole>>();
var signInManager = services.ServiceProvider.GetRequiredService<SignInManager<ApplicationUser>>();
var tokenService = services.ServiceProvider.GetRequiredService<TokenService>();当我将TokenService添加到ServiceCollection时，问题就开始了。
构造函数，TokenService的如下所示：
private readonly IConfiguration configuration;
private readonly UserManager<ApplicationUser> userManager;
public TokenService(IConfiguration configuration, UserManager<ApplicationUser> userManager)
{
this.configuration = configuration;
this.userManager = userManager;
}当我启动我的Core应用程序时，它工作得很好，但不会像我前面提到的那样在ServiceCollection上工作。
在测试中，我开始得到这个错误：
消息: System.AggregateException :发生了一个或多个错误。(无法为服务类型'Microsoft.Extensions.Configuration.IConfiguration‘实例化实现类型'Microsoft.Extensions.Configuration.IConfiguration'.) )(以下构造函数参数没有匹配的夹具数据：'Microsoft.Extensions.Configuration.IConfiguration'. )- System.ArgumentException :无法实例化服务类型‘Microsoft.Extensions.Configuration.IConfiguration’.的实现类型ServicesFixture-下列构造函数参数没有匹配的夹具数据: ServicesFixture夹具
当我将services.AddScoped<IConfiguration>();添加到ServiceCollection和开始获得所需的服务TokenService时，该错误开始显示。
我的问题是，如何正确注册我在Service中使用的Service
我使用Configuration从settings.json获取项目。
编辑：
我的fixture和示例测试类：
public class ServicesFixture
{
public TaskManagerDbContext Context { get; private set; }
public UserManager<ApplicationUser> UserManager { get; private set; }
public RoleManager<IdentityRole> RoleManager { get; private set; }
public SignInManager<ApplicationUser> SignInManager { get; private set; }
public TokenService TokenService { get; private set; }
public ServicesFixture()
{
var servicesModel = ServicesFactory.CreateProperServices();
this.Context = servicesModel.Context;
this.UserManager = servicesModel.UserManager;
this.RoleManager = servicesModel.RoleManager;
this.SignInManager = servicesModel.SignInManager;
this.TokenService = servicesModel.TokenService;
}
[CollectionDefinition("ServicesTestCollection")]
public class QueryCollection : ICollectionFixture<ServicesFixture>
{
}
}测试：
[Collection("ServicesTestCollection")]
public class CreateProjectCommandTests
{
private readonly TaskManagerDbContext context;
public CreateProjectCommandTests(ServicesFixture fixture)
{
this.context = fixture.Context;
}
}EDIT2
当我从集合中删除AddScoped<IConfiguration>();并运行测试时，会得到以下错误：
消息: System.AggregateException :发生了一个或多个错误。( 'TaskManager.Infrastructure.Implementations.TokenService‘类型的服务尚未注册。)(以下构造函数参数没有匹配的夹具数据：'TaskManager.Infrastructure.Implementations.TokenService‘夹具)-下列构造函数参数没有匹配的夹具数据: ServicesFixture夹具
回答 1
Stack Overflow用户
发布于 2019-07-19 16:15:25
您添加了没有实现的IConfiguration。
在startup.cs中，框架会在幕后创建一个实现并添加它。您必须使用ConfigurationBuilder进行同样的操作。
var builder = new ConfigurationBuilder()
//.SetBasePath("path here") //<--You would need to set the path
.AddJsonFile("appsettings.json"); //or what ever file you have the settings
IConfiguration configuration = builder.Build();
services.AddScoped<IConfiguration>(_ => configuration);
//...https://stackoverflow.com/questions/57115707
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