New Post: CompatibleWithModel was working with EF5 not anymore with EF6

public class Blog
{
    public int Id { get; set; }
    public string Title { get; set; }

    public virtual ICollection<Post> Posts { get; set; }
}

public class Post
{
    public int Id { get; set; }
    public string Title { get; set; }

    public int BlogId { get; set; }
    public virtual Blog Blog { get; set; }
}

public class BlogContext : DbContext
{
    public const string TestDb =
        @"Data Source=.\SQLEXPRESS;Initial Catalog=InvestigateCompatDiscussion.BlogContext;Integrated Security=True;MultipleActiveResultSets=True";

    public BlogContext()
        : base(TestDb)
    {
    }

    public DbSet<Blog> Blogs { get; set; }
    public DbSet<Post> Posts { get; set; }
}

internal class Program
{
    private static void Main(string[] args)
    {
        using (var dbContext = new BlogContext())
        {
            dbContext.Database.Delete();
        }

        // Create whole database from migrations
        var settings = new DbMigrationsConfiguration<BlogContext>
        {
            TargetDatabase = new DbConnectionInfo(BlogContext.TestDb, "System.Data.SqlClient"),
            AutomaticMigrationsEnabled = true,
            AutomaticMigrationDataLossAllowed = true,
            MigrationsAssembly = typeof(BlogContext).Assembly,
            MigrationsNamespace = "MyContext.Data.Ef.Migrations",
            ContextKey = typeof(BlogContext).ToString()
        };

        var migrator = new DbMigrator(settings);
        migrator.Update();

        using (var dbContext = new BlogContext())
        {
            Debug.Assert(dbContext.Database.CompatibleWithModel(true));
        }
    }
}