protected TestBase()
{
var services = new ServiceCollection();
services.AddDbContext <CharactersContext>(options =>
options.UseSqlite(CreateInMemoryDatabase()));
services.AddScoped <DbContext>(provider => provider.GetService <CharactersContext>());
Startup.AddDependencies(services);
services.AddLogging();
services.AddMediatR(typeof(Startup));
Services = services.BuildServiceProvider();
var database = Services.GetService <CharactersContext>();
database?.Database.Migrate();
}