// Copyright 2016 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 ethclient
import (
"context"
"errors"
"fmt"
"math/big"
"reflect"
"testing"
"time"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
)
// Verify that Client implements the ethereum interfaces.
var (
_ = ethereum.ChainReader(&Client{})
_ = ethereum.TransactionReader(&Client{})
_ = ethereum.ChainStateReader(&Client{})
_ = ethereum.ChainSyncReader(&Client{})
_ = ethereum.ContractCaller(&Client{})
_ = ethereum.GasEstimator(&Client{})
_ = ethereum.GasPricer(&Client{})
_ = ethereum.LogFilterer(&Client{})
_ = ethereum.PendingStateReader(&Client{})
// _ = ethereum.PendingStateEventer(&Client{})
_ = ethereum.PendingContractCaller(&Client{})
)
func TestToFilterArg(t *testing.T) {
blockHashErr := fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock")
addresses := []common.Address{
common.HexToAddress("0xD36722ADeC3EdCB29c8e7b5a47f352D701393462"),
}
blockHash := common.HexToHash(
"0xeb94bb7d78b73657a9d7a99792413f50c0a45c51fc62bdcb08a53f18e9a2b4eb",
)
for _, testCase := range []struct {
name string
input ethereum.FilterQuery
output interface{}
err error
}{
{
"without BlockHash",
ethereum.FilterQuery{
Addresses: addresses,
FromBlock: big.NewInt(1),
ToBlock: big.NewInt(2),
Topics: [][]common.Hash{},
},
map[string]interface{}{
"address": addresses,
"fromBlock": "0x1",
"toBlock": "0x2",
"topics": [][]common.Hash{},
},
nil,
},
{
"with nil fromBlock and nil toBlock",
ethereum.FilterQuery{
Addresses: addresses,
Topics: [][]common.Hash{},
},
map[string]interface{}{
"address": addresses,
"fromBlock": "0x0",
"toBlock": "latest",
"topics": [][]common.Hash{},
},
nil,
},
{
"with blockhash",
ethereum.FilterQuery{
Addresses: addresses,
BlockHash: &blockHash,
Topics: [][]common.Hash{},
},
map[string]interface{}{
"address": addresses,
"blockHash": blockHash,
"topics": [][]common.Hash{},
},
nil,
},
{
"with blockhash and from block",
ethereum.FilterQuery{
Addresses: addresses,
BlockHash: &blockHash,
FromBlock: big.NewInt(1),
Topics: [][]common.Hash{},
},
nil,
blockHashErr,
},
{
"with blockhash and to block",
ethereum.FilterQuery{
Addresses: addresses,
BlockHash: &blockHash,
ToBlock: big.NewInt(1),
Topics: [][]common.Hash{},
},
nil,
blockHashErr,
},
{
"with blockhash and both from / to block",
ethereum.FilterQuery{
Addresses: addresses,
BlockHash: &blockHash,
FromBlock: big.NewInt(1),
ToBlock: big.NewInt(2),
Topics: [][]common.Hash{},
},
nil,
blockHashErr,
},
} {
t.Run(testCase.name, func(t *testing.T) {
output, err := toFilterArg(testCase.input)
if (testCase.err == nil) != (err == nil) {
t.Fatalf("expected error %v but got %v", testCase.err, err)
}
if testCase.err != nil {
if testCase.err.Error() != err.Error() {
t.Fatalf("expected error %v but got %v", testCase.err, err)
}
} else if !reflect.DeepEqual(testCase.output, output) {
t.Fatalf("expected filter arg %v but got %v", testCase.output, output)
}
})
}
}
var (
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
testBalance = big.NewInt(2e10)
)
func newTestBackend(t *testing.T) (*node.Node, []*types.Block) {
// Generate test chain.
genesis, blocks := generateTestChain()
// Start Ethereum service.
var ethservice *eth.Ethereum
n, err := node.New(&node.Config{})
n.Register(func(ctx *node.ServiceContext) (node.Service, error) {
config := ð.Config{Genesis: genesis}
config.Ethash.PowMode = ethash.ModeFake
ethservice, err = eth.New(ctx, config)
return ethservice, err
})
// Import the test chain.
if err := n.Start(); err != nil {
t.Fatalf("can't start test node: %v", err)
}
if _, err := ethservice.BlockChain().InsertChain(blocks[1:]); err != nil {
t.Fatalf("can't import test blocks: %v", err)
}
return n, blocks
}
func generateTestChain() (*core.Genesis, []*types.Block) {
db := rawdb.NewMemoryDatabase()
config := params.AllEthashProtocolChanges
genesis := &core.Genesis{
Config: config,
Alloc: core.GenesisAlloc{testAddr: {Balance: testBalance}},
ExtraData: []byte("test genesis"),
Timestamp: 9000,
}
generate := func(i int, g *core.BlockGen) {
g.OffsetTime(5)
g.SetExtra([]byte("test"))
}
gblock := genesis.ToBlock(db)
engine := ethash.NewFaker()
blocks, _ := core.GenerateChain(config, gblock, engine, db, 1, generate)
blocks = append([]*types.Block{gblock}, blocks...)
return genesis, blocks
}
func TestHeader(t *testing.T) {
backend, chain := newTestBackend(t)
client, _ := backend.Attach()
defer backend.Stop()
defer client.Close()
tests := map[string]struct {
block *big.Int
want *types.Header
wantErr error
}{
"genesis": {
block: big.NewInt(0),
want: chain[0].Header(),
},
"first_block": {
block: big.NewInt(1),
want: chain[1].Header(),
},
"future_block": {
block: big.NewInt(1000000000),
want: nil,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ec := NewClient(client)
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
got, err := ec.HeaderByNumber(ctx, tt.block)
if tt.wantErr != nil && (err == nil || err.Error() != tt.wantErr.Error()) {
t.Fatalf("HeaderByNumber(%v) error = %q, want %q", tt.block, err, tt.wantErr)
}
if got != nil && got.Number.Sign() == 0 {
got.Number = big.NewInt(0) // hack to make DeepEqual work
}
if !reflect.DeepEqual(got, tt.want) {
t.Fatalf("HeaderByNumber(%v)\n = %v\nwant %v", tt.block, got, tt.want)
}
})
}
}
func TestBalanceAt(t *testing.T) {
backend, _ := newTestBackend(t)
client, _ := backend.Attach()
defer backend.Stop()
defer client.Close()
tests := map[string]struct {
account common.Address
block *big.Int
want *big.Int
wantErr error
}{
"valid_account": {
account: testAddr,
block: big.NewInt(1),
want: testBalance,
},
"non_existent_account": {
account: common.Address{1},
block: big.NewInt(1),
want: big.NewInt(0),
},
"future_block": {
account: testAddr,
block: big.NewInt(1000000000),
want: big.NewInt(0),
wantErr: errors.New("header not found"),
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ec := NewClient(client)
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
got, err := ec.BalanceAt(ctx, tt.account, tt.block)
if tt.wantErr != nil && (err == nil || err.Error() != tt.wantErr.Error()) {
t.Fatalf("BalanceAt(%x, %v) error = %q, want %q", tt.account, tt.block, err, tt.wantErr)
}
if got.Cmp(tt.want) != 0 {
t.Fatalf("BalanceAt(%x, %v) = %v, want %v", tt.account, tt.block, got, tt.want)
}
})
}
}
func TestTransactionInBlockInterrupted(t *testing.T) {
backend, _ := newTestBackend(t)
client, _ := backend.Attach()
defer backend.Stop()
defer client.Close()
ec := NewClient(client)
ctx, cancel := context.WithCancel(context.Background())
cancel()
tx, err := ec.TransactionInBlock(ctx, common.Hash{1}, 1)
if tx != nil {
t.Fatal("transaction should be nil")
}
if err == nil {
t.Fatal("error should not be nil")
}
}
func TestChainID(t *testing.T) {
backend, _ := newTestBackend(t)
client, _ := backend.Attach()
defer backend.Stop()
defer client.Close()
ec := NewClient(client)
id, err := ec.ChainID(context.Background())
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if id == nil || id.Cmp(params.AllEthashProtocolChanges.ChainID) != 0 {
t.Fatalf("ChainID returned wrong number: %+v", id)
}
}
