struct Foo {
    i: i32;
}

impl Foo {
    fn get_i(self) -> i32 {
        return self.i;
    }
    
    fn set_i(self, val: i32) {
        self.i = val;
    }
}

struct Bar {
    use Foo;
    f: f32;
}

test "test_mixin_methods" {
    let b: Bar;
    b.i = 42;
    b.f = 3.14;
    
    let val = b.get_i();
    assert(val == 42, "Mixin method get_i() should return 42");
    
    b.set_i(100);
    assert(b.i == 100, "Mixin method set_i() should update i to 100");
    
    "Mixin method dispatch OK";
}