ConfigurationBindingActionTest.cs

using System;
using System.Collections.Generic;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Options;
using Microsoft.Extensions.DependencyInjection;


var config = new ConfigurationBuilder()
    .AddInMemoryCollection(new Dictionary<string, string>() { { "Param", "yay!" } })
    .Build();
            
var serviceProvider = new ServiceCollection()
    .Configure<Options>(opt => config.Bind(opt)) // << this is the way >>
    .BuildServiceProvider();

Options options = serviceProvider.GetRequiredService<IOptions<Options>>().Value; // simulate receiving IOptions from DI
            
Console.WriteLine(options.Param);
Console.ReadLine();

class Options {
    public string Param { get; set; }
}