interface ITest {
}

struct Test {
}

struct Cmdable {
mut:
    call fn (cmd main.ITest)
}

fn (t Test) test(a ITest) {}

fn test(a ITest) {}

fn get() &Test {
    return &Test{}
}

fn test_main() {
    mut a := Cmdable{}
    a.call = test
    a.call(Test{})
    test(Test{})
    Test{}.test(a)

    assert true
}

fn test_ptr() {
    mut a := Cmdable{}
    a.call = test
    a.call(get())

    assert true
}