asp.net-core - 如何控制 ASP.Net 核心集成测试中的日志级别

Question

我正在尝试限制在为 asp.net core 运行集成测试时打印的日志信息量。目前，调试级别的所有内容都被打印出来，它掩盖了有用的信息。我真的很想将其限制为警告及以上。

我正在使用 https://learn.microsoft.com/en-us/aspnet/core/test/integration-tests?view=aspnetcore-2.2#customize-webapplicationfactory 中的示例运行集成测试

public class CustomWebApplicationFactory<TStartup> 
    : WebApplicationFactory<TStartup> where TStartup: class
{
    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        builder.ConfigureServices(services =>
        {
            // Create a new service provider.
            var serviceProvider = new ServiceCollection()
                .AddEntityFrameworkInMemoryDatabase()
                .BuildServiceProvider();

            // Add a database context (ApplicationDbContext) using an in-memory 
            // database for testing.
            services.AddDbContext<ApplicationDbContext>(options => 
            {
                options.UseInMemoryDatabase("InMemoryDbForTesting");
                options.UseInternalServiceProvider(serviceProvider);
            });

            // Build the service provider.
            var sp = services.BuildServiceProvider();

            // Create a scope to obtain a reference to the database
            // context (ApplicationDbContext).
            using (var scope = sp.CreateScope())
            {
                var scopedServices = scope.ServiceProvider;
                var db = scopedServices.GetRequiredService<ApplicationDbContext>();
                var logger = scopedServices
                    .GetRequiredService<ILogger<CustomWebApplicationFactory<TStartup>>>();

                // Ensure the database is created.
                db.Database.EnsureCreated();

                try
                {
                    // Seed the database with test data.
                    Utilities.InitializeDbForTests(db);
                }
                catch (Exception ex)
                {
                    logger.LogError(ex, "An error occurred seeding the database. Error: {Message}", ex.Message);
                }
            }
        });
    }
}

日志:

dbug: Microsoft.AspNetCore.Hosting.Internal.WebHost[4]
      Hosting started
dbug: Microsoft.AspNetCore.Hosting.Internal.WebHost[0]
      Loaded hosting startup assembly BackEnd.Api
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/2.0 GET http://localhost/test
dbug: Microsoft.AspNetCore.HostFiltering.HostFilteringMiddleware[0]
      Wildcard detected, all requests with hosts will be allowed.
...lots more dbug logs...

我在 ConfigureWebHost 中尝试过的事情:

            builder.ConfigureLogging(o =>
            {
                o.SetMinimumLevel(LogLevel.Warning);
            });

没有影响。我无法想出任何其他具有任何效果的级别和过滤器组合。

            builder.ConfigureLogging(o =>
            {
                o.ClearProviders();
            });

停止所有日志记录，但这并不是我真正想要的。

Answer 1

尝试像这样使用AddFilter

builder.ConfigureLogging(o=> {
            //o.SetMinimumLevel(LogLevel.Warning);
            o.AddFilter(logLevel => logLevel >= LogLevel.Warning);
        });