static Tests()
{
var builder = new ConfigurationBuilder();
builder.AddJsonFile("appsettings.json");
var configuration = builder.Build();
_serviceProvider = Cores.BuildServiceProvider(configuration, current => current.AddServices(services =>
{
services.TryAddSingleton(typeof(IConfiguration), x => configuration);
services.TryAddSingleton(typeof(ILogger <>), typeof(NullLogger <>));
services.TryAddSingleton(typeof(ILoggerFactory), typeof(NullLoggerFactory));
}));
}