如何在集成测试项目中替换中间件 [英] How to replace Middleware in integration tests project

问题描述

我有一个启动CS，我在其中注册AuthenticationMiddleware是这样的:

I have startup cs where I register AuthenticationMiddleware like this:

public class Startup
{
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        ...
        AddAuthentication(app);
        app.UseMvcWithDefaultRoute();
        app.UseStaticFiles();
    }

    protected virtual void AddAuthentication(IApplicationBuilder app)
    {
        app.UseAuthentication();
    }
}

我用以下方法进行测试:

and I test it using:

WebApplicationFactory<Startup>().CreateClient();

问题:

我想用app.UseMiddleware<TestingAuthenticationMiddleware>()替换app.UseAuthentication();

我在我的测试项目中考虑过从Startup继承:

I thought about inheriting from Startup in my test project:

public class TestStartup : Startup
{
    protected override void AddAuthentication(IApplicationBuilder app)
    {
        app.UseMiddleware<AuthenticatedTestRequestMiddleware>();
    }
}

class TestWebApplicationFactory : WebApplicationFactory<Web.Startup>
{
    protected override IWebHostBuilder CreateWebHostBuilder()
    {
        return WebHost.CreateDefaultBuilder()
            .UseStartup<IntegrationTestProject.TestStartup>();
    }
}

但这不起作用，因为TestStartup在另一个程序集中，这对WebHost.CreateDefaultBuilder()

but this does not work, since TestStartup is in another assembly, which has a lot of side effects on WebHost.CreateDefaultBuilder()

我得到了:

System.ArgumentException:内容根 'C:\ Projects \ Liero \ myproject \ tests \ IntegrationTests'不存在. 参数名称:contentRootPath

System.ArgumentException: The content root 'C:\Projects\Liero\myproject\tests\IntegrationTests' does not exist. Parameter name: contentRootPath

推荐答案

似乎WebApplicationFactory应该使用真实的Startup类作为类型参数:

It seems that WebApplicationFactory should use the real Startup class as the type argument:

class TestWebApplicationFactory : WebApplicationFactory<Startup>
{
    protected override IWebHostBuilder CreateWebHostBuilder()
    {
        return WebHost.CreateDefaultBuilder<TestableStartup>(new string[0]);
    }
}

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