struct Data {
    a ?int
    b ?int = 1
}

struct Data2 {
    d Data
}

fn test_nested_option_struct_init() {
    d2 := Data2{}
    println(d2)
    assert d2.d.a == none
    assert d2.d.b != none
    assert d2.d.b? == 1
}

struct AA {
    bb ?BB // defaults to none
}

struct BB {
    x string @[required]
}

fn test_nested_option_struct_with_attr_init() {
    aa := AA{}
    println(aa)
    assert aa.bb == none
}