struct Placeholder {
    name string
}

struct FnStruct {
mut:
    array_of_fn []fn (int, &Placeholder, string) bool
}

fn test_fn_array_direct_call() {
    mut fs := FnStruct{}
    fs.array_of_fn << fn (x int, y &Placeholder, z string) bool {
        return false
    }

    println(fs.array_of_fn[0](1, &Placeholder{
        name: 'Bob'
    }, 'Builder'))
    assert fs.array_of_fn[0](1, &Placeholder{
        name: 'Bob'
    }, 'Builder') == false
}

fn test_fn_map_direct_call() {
    a := {
        'aaa': fn () string {
            return 'aaa'
        }
        'bbb': fn () string {
            return 'bbb'
        }
    }
    println(a['aaa']())
    println(a['bbb']())
    assert a['aaa']() == 'aaa'
    assert a['bbb']() == 'bbb'
}

fn add(a int, b int) int {
    return a + b
}

fn test_parenthesized_fn_direct_call() {
    assert (add)(2, 4) == 6
}