如何测试全局错误处理中间件与ASP.Net核心中的控制器之间的集成？

// 自定义控制器
public class ErrorController : ControllerBase
{
    [HttpGet]
    public IActionResult ThrowError()
    {
        throw new Exception("Simulated error");
    }
}

// 集成测试
public class ErrorMiddlewareIntegrationTest
{
    private readonly TestServer _server;
    private readonly HttpClient _client;

    public ErrorMiddlewareIntegrationTest()
    {
        // 创建TestServer并配置Startup
        var webHostBuilder = new WebHostBuilder()
            .ConfigureServices(services => { /* 配置依赖注入 */ })
            .Configure(app =>
            {
                // 添加全局错误处理中间件
                app.UseMiddleware<ErrorMiddleware>();
                
                // 添加路由
                app.UseRouting();
                app.UseEndpoints(endpoints =>
                {
                    endpoints.MapControllers();
                });
            });

        // 创建TestServer和HttpClient
        _server = new TestServer(webHostBuilder);
        _client = _server.CreateClient();
    }

    [Fact]
    public async Task TestGlobalErrorHandlingMiddleware()
    {
        // 发起请求
        var response = await _client.GetAsync("/error/throwerror");

        // 验证响应是否为错误响应
        response.EnsureSuccessStatusCode();
        Assert.Equal(HttpStatusCode.InternalServerError, response.StatusCode);
        
        // 进一步验证错误处理逻辑是否生效
        var responseString = await response.Content.ReadAsStringAsync();
        Assert.Contains("An error occurred", responseString);
    }
}