Using a shared in-memory SQLite database in a test

Program.cs

using System;
using System.Linq;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;

namespace EnsureCreatedSqliteInMemory
{
    class Program
    {
        static void Main(string[] args)
        {
            var connectionString = "DataSource=myshareddb;mode=memory;cache=shared";
            using (var keepDatabaseAlive = new SqliteConnection(connectionString))
            {
                keepDatabaseAlive.Open();

                var services = new ServiceCollection()
                    .AddDbContext<MyContext>(options => options.UseSqlite(connectionString))
                    .BuildServiceProvider();

                using (var scope = services.CreateScope())
                {
                    using (var myDb = scope.ServiceProvider.GetRequiredService<MyContext>())
                    {
                        var result = myDb.Database.EnsureCreated();

                        try
                        {
                            Console.WriteLine($"Number of rows in the table is {myDb.People.Count()}");
                        }
                        catch (Exception e)
                        {
                            Console.WriteLine($"Threw exception: {e}");
                        }
                    }
                }
            }
        }
    }

    public class MyContext : DbContext
    {
        public MyContext(DbContextOptions<MyContext> options) : base(options)
        {
        }

        public DbSet<Person> People { get; set; }
    }

    public class Person
    {
        public int Id { get; set; }
    }
}