package main

import (
	"math"
	"reflect"
	"testing"
)

func TestParse(t *testing.T) {
	for _, test := range []struct {
		name string
		args []string
		want config
	}{
		{"defaults", nil, config{4143, 4140, 2102, []uint16{4190, 4191}}},
		{"custom", []string{"--inbound=10123", "--outbound=10456", "--proxy-uid=9876", "--ignore-inbound=80,443"}, config{10123, 10456, 9876, []uint16{80, 443}}},
		{"bounds", []string{"--inbound=65535", "--outbound=1", "--proxy-uid=4294967295", "--ignore-inbound="}, config{math.MaxUint16, 1, math.MaxUint32, nil}},
	} {
		t.Run(test.name, func(t *testing.T) {
			got, err := parse(test.args)
			if err != nil || !reflect.DeepEqual(got, test.want) {
				t.Fatalf("parse = %+v, %v; want %+v", got, err, test.want)
			}
		})
	}
	for _, args := range [][]string{
		{"--inbound=0"}, {"--outbound=0"}, {"--inbound=65536"}, {"--outbound=-1"},
		{"--proxy-uid=4294967296"}, {"--proxy-uid=-1"},
		{"--ignore-inbound=0"}, {"--ignore-inbound=80,"}, {"--ignore-inbound=65536"},
		{"--ignore-inbound=garbage"}, {"--unknown"}, {"extra"},
	} {
		if _, err := parse(args); err == nil {
			t.Errorf("accepted %v", args)
		}
	}
}