// Copyright 2015, Cong Ding. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: Cong Ding <dinggnu@gmail.com>

package stun

import (
	"testing"
)

func TestPadding(t *testing.T) {
	b := []byte{1, 2}
	expected := []byte{1, 2, 0, 0}
	result := padding(b)
	if len(result) != len(expected) {
		t.Errorf("Padding error: result size wrong.\n")
	}
	for i := range expected {
		if expected[i] != result[i] {
			t.Errorf("Padding error: data wrong in bit %d.\n", i)
		}
	}
}

func TestAlign(t *testing.T) {
	d := make(map[uint16]uint16)
	d[1] = 4
	d[4] = 4
	d[5] = 8
	d[6] = 8
	d[7] = 8
	d[8] = 8
	d[65528] = 65528
	d[65529] = 65532
	d[65531] = 65532
	d[65532] = 65532
	for k, v := range d {
		if align(k) != v {
			t.Errorf("Align error: expected %d, get %d", align(k), v)
		}
	}
}

func TestIsLocalAddress(t *testing.T) {
	if !isLocalAddress(":1234", "127.0.0.1:8888") {
		t.Errorf("isLocal error")
	}
	if !isLocalAddress("192.168.0.1:1234", "192.168.0.1:8888") {
		t.Errorf("isLocal error")
	}
	if !isLocalAddress("8.8.8.8:1234", "8.8.8.8:8888") {
		t.Errorf("isLocal error")
	}
	if isLocalAddress(":1234", "8.8.8.8:8888") {
		t.Errorf("isLocal error")
	}
}