type MyString = string
type MyInt = int

struct S1 {
    x fn (a int) main.MyString
}

struct S2 {
    y fn (a int) main.MyInt
}

fn get_string(a int) MyString {
    return '${a}'
}

fn get_int(a int) MyInt {
    return a
}

fn test_anon_fn_with_alias_args() {
    s1 := S1{
        x: get_string
    }
    println(s1.x)
    ret1 := s1.x(22)
    println(ret1)
    assert ret1 == '22'

    s2 := S2{
        y: get_int
    }
    println(s2.y)
    ret2 := s2.y(22)
    println(ret2)
    assert ret2 == 22
}