// Copyright 2015 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.

package auth

import (
	"testing"

	"github.com/stretchr/testify/require"
)

func TestEncodePassword(t *testing.T) {
	pwd := "123"
	require.Equal(t, "*23AE809DDACAF96AF0FD78ED04B6A265E05AA257", EncodePassword(pwd))
	require.Equal(t, EncodePasswordBytes([]byte(pwd)), EncodePassword(pwd))
}

func TestDecodePassword(t *testing.T) {
	x, err := DecodePassword(EncodePassword("123"))
	require.NoError(t, err)
	require.Equal(t, Sha1Hash(Sha1Hash([]byte("123"))), x)
}

func TestCheckScramble(t *testing.T) {
	pwd := "abc"
	salt := []byte{85, 92, 45, 22, 58, 79, 107, 6, 122, 125, 58, 80, 12, 90, 103, 32, 90, 10, 74, 82}
	auth := []byte{24, 180, 183, 225, 166, 6, 81, 102, 70, 248, 199, 143, 91, 204, 169, 9, 161, 171, 203, 33}
	encodepwd := EncodePassword(pwd)
	hpwd, err := DecodePassword(encodepwd)
	require.NoError(t, err)

	res := CheckScrambledPassword(salt, hpwd, auth)
	require.True(t, res)

	// Do not panic for invalid input.
	res = CheckScrambledPassword(salt, hpwd, []byte("xxyyzz"))
	require.False(t, res)
}