// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package types

import (
	"math/big"
	"testing"

	"bytes"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/rlp"
	"reflect"
)

// from bcValidBlockTest.json, "SimpleTx"
func TestBlockEncoding(t *testing.T) {
	blockEnc := common.FromHex("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")
	var block Block
	if err := rlp.DecodeBytes(blockEnc, &block); err != nil {
		t.Fatal("decode error: ", err)
	}

	check := func(f string, got, want interface{}) {
		if !reflect.DeepEqual(got, want) {
			t.Errorf("%s mismatch: got %v, want %v", f, got, want)
		}
	}
	check("Difficulty", block.Difficulty(), big.NewInt(131072))
	check("GasLimit", block.GasLimit(), uint64(3141592))
	check("GasUsed", block.GasUsed(), uint64(21000))
	check("Coinbase", block.Coinbase(), common.HexToAddress("8888f1f195afa192cfee860698584c030f4c9db1"))
	check("MixDigest", block.MixDigest(), common.HexToHash("bd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498"))
	check("Root", block.Root().String(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017").String())
	check("Hash", block.Hash().String(), common.HexToHash("e8d9d473fdeddd3079988fa7be58f582b7b2800e90917d4bb6f11155ce4dba30").String())
	check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4))
	check("Time", block.Time(), big.NewInt(1426516743))
	check("Size", block.Size(), common.StorageSize(len(blockEnc)))

	ourBlockEnc, err := rlp.EncodeToBytes(&block)
	if err != nil {
		t.Fatal("encode error: ", err)
	}

	if !bytes.Equal(ourBlockEnc, blockEnc) {
		t.Errorf("encoded block mismatch:\ngot:  %x\nwant: %x", ourBlockEnc, blockEnc)
	}
}
