I am not using a Startup.cs in my WebAPI about mytested.aspnetcore.mvc HOT 2 CLOSED

Hey sonicmouse,
you can create a partial Program class and inherit from it also in case you need IConfiguration or IWebHostEnvironment for replacing something on your mock services you can inject them in the constructor.
Example:
just place it in the same Program.cs file at the bottom of it
public partial class Program
{
public Program(IConfiguration configuration, IWebHostEnvironment environment)
{
this.MyConfiguration = configuration;
this.MyWebHostEnvironment = environment;
}

public IConfiguration MyConfiguration { get; }
public IWebHostEnvironment MyWebHostEnvironment { get; }

}
// the usual TestStartup file but this time inherits from the partial Program class
public class TestStartup : Program
{
public TestStartup(IConfiguration configuration, IWebHostEnvironment hostEnvironment)
: base(configuration, hostEnvironment)
{
}

public void ConfigureTestServices(IServiceCollection services)
{
    services
        .AddApplication(base.MyConfiguration)
        .AddInfrastructure(base.MyConfiguration, base.MyWebHostEnvironment, false)
        .AddWebComponents();

    services.ReplaceSingleton<IEmailSender, EmailSenderMock>();
    services.ReplaceScoped<UserManager<User>, UserManagerMock>();
}

}

This is what works for me :)

from mytested.aspnetcore.mvc.

Excellent -- Thank you!

from mytested.aspnetcore.mvc.