package model

import (
	"strings"
	"testing"
)

func TestScopedOptionsOrder(t *testing.T) {
	s := NewState()
	add := func(scope string, names ...string) {
		for i, n := range names {
			id := int64(len(s.Options) + 1)
			s.Options[id] = &Option{ID: id, Scope: scope, Name: n, Position: i}
		}
	}
	// Added in an arbitrary order; listen-on twice.
	add(ScopeView, "zzz-unknown", "forwarders", "listen-on", "recursion", "dnssec-validation", "aaa-unknown", "allow-query", "forward", "directory", "listen-on", "allow-transfer")
	var got []string
	for _, o := range s.ScopedOptions(ScopeView, 0) {
		got = append(got, o.Name)
	}
	want := "directory listen-on listen-on allow-query forward forwarders recursion dnssec-validation allow-transfer aaa-unknown zzz-unknown"
	if strings.Join(got, " ") != want {
		t.Errorf("order:\n got %s\nwant %s", strings.Join(got, " "), want)
	}
	// An option given twice keeps the order it was added in.
	l := s.ScopedOptions(ScopeView, 0)
	if l[1].Position > l[2].Position {
		t.Error("repeated listen-on swapped")
	}
	// Top-level statements stay as entered.
	add(ScopeTopLevel, "logging", "acl", "key")
	got = nil
	for _, o := range s.ScopedOptions(ScopeTopLevel, 0) {
		got = append(got, o.Name)
	}
	if strings.Join(got, " ") != "logging acl key" {
		t.Errorf("top level: %v", got)
	}
}