interface ITest {
    a MySum
}

struct Test {
    a MySum
}

type MySum = bool | int

fn interface_var(a ITest) {
    match a {
        Test {
            $dbg;
        }
        else {}
    }
}

struct MyTest {
    t ITest
}

fn struct_to_interface_field() {
    t1 := Test{}
    _ := MyTest{
        t: t1
    }
    mut t2 := Test{}
    _ := MyTest{
        t: t2
    }
    $dbg;
}

fn main() {
    interface_var(Test{ a: true })
    struct_to_interface_field()
}