meeting-assistant/MeetingAssistant.Tests/IsolatedApplicationFactory.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace MeetingAssistant.Tests;

public sealed class IsolatedApplicationFactory : WebApplicationFactory<Program>
{
    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        builder.ConfigureTestServices(services =>
        {
            // Endpoint tests retain production composition but opt into each background activity they exercise.
            foreach (var descriptor in services.Where(descriptor =>
                descriptor.ServiceType == typeof(IHostedService) &&
                (descriptor.ImplementationType?.Assembly == typeof(Program).Assembly ||
                 descriptor.ImplementationFactory is not null)).ToArray())
            {
                services.Remove(descriptor);
            }
        });
    }
}