forked from cerc-io/plugeth
* Add more functionality to the sim (#5) * backends: implement more of ethclient in sim * backends: add BlockByNumber to simulated backend * backends: make simulated progress function agree with syncprogress interface for client * backends: add more tests * backends: add more comments * backends: fix sim for index in tx and add tests * backends: add lock back to estimategas * backends: goimports * backends: go ci lint * Add more functionality to the sim (#5) * backends: implement more of ethclient in sim * backends: add BlockByNumber to simulated backend * backends: make simulated progress function agree with syncprogress interface for client * backends: add more tests * backends: add more comments * backends: fix sim for index in tx and add tests * backends: add lock back to estimategas * backends: goimports * backends: go ci lint * assert errs
This commit is contained in:
Ilan Gitter
Guillaume Ballet
parent
6ae9dc15cc
commit
93b1171316
@ -46,12 +46,17 @@ import (
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var _ bind.ContractBackend = (*SimulatedBackend)(nil)
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var (
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errBlockNumberUnsupported = errors.New("simulatedBackend cannot access blocks other than the latest block")
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errGasEstimationFailed = errors.New("gas required exceeds allowance or always failing transaction")
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errBlockNumberUnsupported = errors.New("simulatedBackend cannot access blocks other than the latest block")
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errBlockDoesNotExist = errors.New("block does not exist in blockchain")
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errTransactionDoesNotExist = errors.New("transaction does not exist")
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errGasEstimationFailed = errors.New("gas required exceeds allowance or always failing transaction")
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)
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// SimulatedBackend implements bind.ContractBackend, simulating a blockchain in
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// the background. Its main purpose is to allow easily testing contract bindings.
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// Simulated backend implements the following interfaces:
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// ChainReader, ChainStateReader, ContractBackend, ContractCaller, ContractFilterer, ContractTransactor,
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// DeployBackend, GasEstimator, GasPricer, LogFilterer, PendingContractCaller, TransactionReader, and TransactionSender
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type SimulatedBackend struct {
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database ethdb.Database // In memory database to store our testing data
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blockchain *core.BlockChain // Ethereum blockchain to handle the consensus
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@ -173,6 +178,9 @@ func (b *SimulatedBackend) StorageAt(ctx context.Context, contract common.Addres
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// TransactionReceipt returns the receipt of a transaction.
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func (b *SimulatedBackend) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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receipt, _, _, _ := rawdb.ReadReceipt(b.database, txHash, b.config)
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return receipt, nil
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}
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@ -196,6 +204,115 @@ func (b *SimulatedBackend) TransactionByHash(ctx context.Context, txHash common.
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return nil, false, ethereum.NotFound
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}
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// BlockByHash retrieves a block based on the block hash
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func (b *SimulatedBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if hash == b.pendingBlock.Hash() {
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return b.pendingBlock, nil
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}
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block := b.blockchain.GetBlockByHash(hash)
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if block != nil {
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return block, nil
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}
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return nil, errBlockDoesNotExist
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}
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// BlockByNumber retrieves a block from the database by number, caching it
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// (associated with its hash) if found.
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func (b *SimulatedBackend) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if number == nil || number.Cmp(b.pendingBlock.Number()) == 0 {
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return b.blockchain.CurrentBlock(), nil
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}
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block := b.blockchain.GetBlockByNumber(uint64(number.Int64()))
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if block == nil {
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return nil, errBlockDoesNotExist
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}
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return block, nil
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}
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// HeaderByHash returns a block header from the current canonical chain.
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func (b *SimulatedBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if hash == b.pendingBlock.Hash() {
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return b.pendingBlock.Header(), nil
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}
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header := b.blockchain.GetHeaderByHash(hash)
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if header == nil {
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return nil, errBlockDoesNotExist
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}
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return header, nil
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}
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// HeaderByNumber returns a block header from the current canonical chain. If number is
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// nil, the latest known header is returned.
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func (b *SimulatedBackend) HeaderByNumber(ctx context.Context, block *big.Int) (*types.Header, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if block == nil || block.Cmp(b.pendingBlock.Number()) == 0 {
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return b.blockchain.CurrentHeader(), nil
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}
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return b.blockchain.GetHeaderByNumber(uint64(block.Int64())), nil
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}
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// TransactionCount returns the number of transactions in a given block
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func (b *SimulatedBackend) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if blockHash == b.pendingBlock.Hash() {
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return uint(b.pendingBlock.Transactions().Len()), nil
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}
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block := b.blockchain.GetBlockByHash(blockHash)
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if block == nil {
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return uint(0), errBlockDoesNotExist
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}
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return uint(block.Transactions().Len()), nil
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}
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// TransactionInBlock returns the transaction for a specific block at a specific index
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func (b *SimulatedBackend) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) {
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b.mu.Lock()
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defer b.mu.Unlock()
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if blockHash == b.pendingBlock.Hash() {
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transactions := b.pendingBlock.Transactions()
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if uint(len(transactions)) < index+1 {
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return nil, errTransactionDoesNotExist
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}
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return transactions[index], nil
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}
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block := b.blockchain.GetBlockByHash(blockHash)
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if block == nil {
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return nil, errBlockDoesNotExist
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}
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transactions := block.Transactions()
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if uint(len(transactions)) < index+1 {
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return nil, errTransactionDoesNotExist
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}
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return transactions[index], nil
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}
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// PendingCodeAt returns the code associated with an account in the pending state.
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func (b *SimulatedBackend) PendingCodeAt(ctx context.Context, contract common.Address) ([]byte, error) {
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b.mu.Lock()
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@ -419,10 +536,38 @@ func (b *SimulatedBackend) SubscribeFilterLogs(ctx context.Context, query ethere
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}), nil
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}
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// SubscribeNewHead returns an event subscription for a new header
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func (b *SimulatedBackend) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error) {
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// subscribe to a new head
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sink := make(chan *types.Header)
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sub := b.events.SubscribeNewHeads(sink)
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return event.NewSubscription(func(quit <-chan struct{}) error {
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defer sub.Unsubscribe()
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for {
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select {
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case head := <-sink:
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select {
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case ch <- head:
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case err := <-sub.Err():
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return err
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case <-quit:
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return nil
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}
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case err := <-sub.Err():
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return err
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case <-quit:
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return nil
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}
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}
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}), nil
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}
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// AdjustTime adds a time shift to the simulated clock.
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func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error {
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b.mu.Lock()
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defer b.mu.Unlock()
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blocks, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), ethash.NewFaker(), b.database, 1, func(number int, block *core.BlockGen) {
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for _, tx := range b.pendingBlock.Transactions() {
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block.AddTx(tx)
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@ -14,20 +14,24 @@
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package backends_test
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package backends
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import (
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"bytes"
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"context"
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"math/big"
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"strings"
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"testing"
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"time"
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ethereum "github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/params"
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)
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func TestSimulatedBackend(t *testing.T) {
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@ -37,7 +41,7 @@ func TestSimulatedBackend(t *testing.T) {
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genAlloc := make(core.GenesisAlloc)
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genAlloc[auth.From] = core.GenesisAccount{Balance: big.NewInt(9223372036854775807)}
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sim := backends.NewSimulatedBackend(genAlloc, gasLimit)
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sim := NewSimulatedBackend(genAlloc, gasLimit)
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defer sim.Close()
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// should return an error if the tx is not found
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@ -79,5 +83,760 @@ func TestSimulatedBackend(t *testing.T) {
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if isPending {
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t.Fatal("transaction should not have pending status")
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}
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}
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var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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// the following is based on this contract:
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// contract T {
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// event received(address sender, uint amount, bytes memo);
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// event receivedAddr(address sender);
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//
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// function receive(bytes calldata memo) external payable returns (string memory res) {
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// emit received(msg.sender, msg.value, memo);
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// emit receivedAddr(msg.sender);
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// return "hello world";
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// }
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// }
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const abiJSON = `[ { "constant": false, "inputs": [ { "name": "memo", "type": "bytes" } ], "name": "receive", "outputs": [ { "name": "res", "type": "string" } ], "payable": true, "stateMutability": "payable", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "sender", "type": "address" }, { "indexed": false, "name": "amount", "type": "uint256" }, { "indexed": false, "name": "memo", "type": "bytes" } ], "name": "received", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "sender", "type": "address" } ], "name": "receivedAddr", "type": "event" } ]`
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const abiBin = `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`
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const deployedCode = `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`
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// expected return value contains "hello world"
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var expectedReturn = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
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func TestNewSimulatedBackend(t *testing.T) {
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testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
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expectedBal := big.NewInt(10000000000)
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sim := NewSimulatedBackend(
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core.GenesisAlloc{
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testAddr: {Balance: expectedBal},
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}, 10000000,
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)
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defer sim.Close()
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if sim.config != params.AllEthashProtocolChanges {
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t.Errorf("expected sim config to equal params.AllEthashProtocolChanges, got %v", sim.config)
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}
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if sim.blockchain.Config() != params.AllEthashProtocolChanges {
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t.Errorf("expected sim blockchain config to equal params.AllEthashProtocolChanges, got %v", sim.config)
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}
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statedb, _ := sim.blockchain.State()
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bal := statedb.GetBalance(testAddr)
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if bal.Cmp(expectedBal) != 0 {
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t.Errorf("expected balance for test address not received. expected: %v actual: %v", expectedBal, bal)
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}
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}
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func TestSimulatedBackend_AdjustTime(t *testing.T) {
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sim := NewSimulatedBackend(
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core.GenesisAlloc{}, 10000000,
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)
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defer sim.Close()
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prevTime := sim.pendingBlock.Time()
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err := sim.AdjustTime(time.Second)
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if err != nil {
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t.Error(err)
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}
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newTime := sim.pendingBlock.Time()
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if newTime-prevTime != uint64(time.Second.Seconds()) {
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t.Errorf("adjusted time not equal to a second. prev: %v, new: %v", prevTime, newTime)
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}
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}
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func TestSimulatedBackend_BalanceAt(t *testing.T) {
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testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
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expectedBal := big.NewInt(10000000000)
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sim := NewSimulatedBackend(
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core.GenesisAlloc{
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testAddr: {Balance: expectedBal},
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}, 10000000,
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)
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defer sim.Close()
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bgCtx := context.Background()
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bal, err := sim.BalanceAt(bgCtx, testAddr, nil)
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if err != nil {
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t.Error(err)
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}
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if bal.Cmp(expectedBal) != 0 {
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t.Errorf("expected balance for test address not received. expected: %v actual: %v", expectedBal, bal)
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}
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}
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func TestSimulatedBackend_BlockByHash(t *testing.T) {
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sim := NewSimulatedBackend(
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core.GenesisAlloc{}, 10000000,
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)
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defer sim.Close()
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bgCtx := context.Background()
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block, err := sim.BlockByNumber(bgCtx, nil)
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if err != nil {
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t.Errorf("could not get recent block: %v", err)
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}
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blockByHash, err := sim.BlockByHash(bgCtx, block.Hash())
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if err != nil {
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t.Errorf("could not get recent block: %v", err)
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}
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if block.Hash() != blockByHash.Hash() {
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t.Errorf("did not get expected block")
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}
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}
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func TestSimulatedBackend_BlockByNumber(t *testing.T) {
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sim := NewSimulatedBackend(
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core.GenesisAlloc{}, 10000000,
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)
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defer sim.Close()
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bgCtx := context.Background()
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block, err := sim.BlockByNumber(bgCtx, nil)
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if err != nil {
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t.Errorf("could not get recent block: %v", err)
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}
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if block.NumberU64() != 0 {
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t.Errorf("did not get most recent block, instead got block number %v", block.NumberU64())
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}
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// create one block
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sim.Commit()
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block, err = sim.BlockByNumber(bgCtx, nil)
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if err != nil {
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t.Errorf("could not get recent block: %v", err)
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}
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if block.NumberU64() != 1 {
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t.Errorf("did not get most recent block, instead got block number %v", block.NumberU64())
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}
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blockByNumber, err := sim.BlockByNumber(bgCtx, big.NewInt(1))
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if err != nil {
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t.Errorf("could not get block by number: %v", err)
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}
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if blockByNumber.Hash() != block.Hash() {
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t.Errorf("did not get the same block with height of 1 as before")
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}
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}
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func TestSimulatedBackend_NonceAt(t *testing.T) {
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testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
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sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
nonce, err := sim.NonceAt(bgCtx, testAddr, big.NewInt(0))
|
||||
if err != nil {
|
||||
t.Errorf("could not get nonce for test addr: %v", err)
|
||||
}
|
||||
|
||||
if nonce != uint64(0) {
|
||||
t.Errorf("received incorrect nonce. expected 0, got %v", nonce)
|
||||
}
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(nonce, testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
sim.Commit()
|
||||
|
||||
newNonce, err := sim.NonceAt(bgCtx, testAddr, big.NewInt(1))
|
||||
if err != nil {
|
||||
t.Errorf("could not get nonce for test addr: %v", err)
|
||||
}
|
||||
|
||||
if newNonce != nonce+uint64(1) {
|
||||
t.Errorf("received incorrect nonce. expected 1, got %v", nonce)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_SendTransaction(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
sim.Commit()
|
||||
|
||||
block, err := sim.BlockByNumber(bgCtx, big.NewInt(1))
|
||||
if err != nil {
|
||||
t.Errorf("could not get block at height 1: %v", err)
|
||||
}
|
||||
|
||||
if signedTx.Hash() != block.Transactions()[0].Hash() {
|
||||
t.Errorf("did not commit sent transaction. expected hash %v got hash %v", block.Transactions()[0].Hash(), signedTx.Hash())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_TransactionByHash(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
|
||||
// ensure tx is committed pending
|
||||
receivedTx, pending, err := sim.TransactionByHash(bgCtx, signedTx.Hash())
|
||||
if err != nil {
|
||||
t.Errorf("could not get transaction by hash %v: %v", signedTx.Hash(), err)
|
||||
}
|
||||
if !pending {
|
||||
t.Errorf("expected transaction to be in pending state")
|
||||
}
|
||||
if receivedTx.Hash() != signedTx.Hash() {
|
||||
t.Errorf("did not received committed transaction. expected hash %v got hash %v", signedTx.Hash(), receivedTx.Hash())
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
|
||||
// ensure tx is not and committed pending
|
||||
receivedTx, pending, err = sim.TransactionByHash(bgCtx, signedTx.Hash())
|
||||
if err != nil {
|
||||
t.Errorf("could not get transaction by hash %v: %v", signedTx.Hash(), err)
|
||||
}
|
||||
if pending {
|
||||
t.Errorf("expected transaction to not be in pending state")
|
||||
}
|
||||
if receivedTx.Hash() != signedTx.Hash() {
|
||||
t.Errorf("did not received committed transaction. expected hash %v got hash %v", signedTx.Hash(), receivedTx.Hash())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_EstimateGas(t *testing.T) {
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
gas, err := sim.EstimateGas(bgCtx, ethereum.CallMsg{
|
||||
From: testAddr,
|
||||
To: &testAddr,
|
||||
Value: big.NewInt(1000),
|
||||
Data: []byte{},
|
||||
})
|
||||
if err != nil {
|
||||
t.Errorf("could not estimate gas: %v", err)
|
||||
}
|
||||
|
||||
if gas != params.TxGas {
|
||||
t.Errorf("expected 21000 gas cost for a transaction got %v", gas)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_HeaderByHash(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
header, err := sim.HeaderByNumber(bgCtx, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get recent block: %v", err)
|
||||
}
|
||||
headerByHash, err := sim.HeaderByHash(bgCtx, header.Hash())
|
||||
if err != nil {
|
||||
t.Errorf("could not get recent block: %v", err)
|
||||
}
|
||||
|
||||
if header.Hash() != headerByHash.Hash() {
|
||||
t.Errorf("did not get expected block")
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_HeaderByNumber(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
latestBlockHeader, err := sim.HeaderByNumber(bgCtx, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get header for tip of chain: %v", err)
|
||||
}
|
||||
if latestBlockHeader == nil {
|
||||
t.Errorf("received a nil block header")
|
||||
}
|
||||
if latestBlockHeader.Number.Uint64() != uint64(0) {
|
||||
t.Errorf("expected block header number 0, instead got %v", latestBlockHeader.Number.Uint64())
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
|
||||
latestBlockHeader, err = sim.HeaderByNumber(bgCtx, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get header for blockheight of 1: %v", err)
|
||||
}
|
||||
|
||||
blockHeader, err := sim.HeaderByNumber(bgCtx, big.NewInt(1))
|
||||
if err != nil {
|
||||
t.Errorf("could not get header for blockheight of 1: %v", err)
|
||||
}
|
||||
|
||||
if blockHeader.Hash() != latestBlockHeader.Hash() {
|
||||
t.Errorf("block header and latest block header are not the same")
|
||||
}
|
||||
if blockHeader.Number.Int64() != int64(1) {
|
||||
t.Errorf("did not get blockheader for block 1. instead got block %v", blockHeader.Number.Int64())
|
||||
}
|
||||
|
||||
block, err := sim.BlockByNumber(bgCtx, big.NewInt(1))
|
||||
if err != nil {
|
||||
t.Errorf("could not get block for blockheight of 1: %v", err)
|
||||
}
|
||||
|
||||
if block.Hash() != blockHeader.Hash() {
|
||||
t.Errorf("block hash and block header hash do not match. expected %v, got %v", block.Hash(), blockHeader.Hash())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_TransactionCount(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
currentBlock, err := sim.BlockByNumber(bgCtx, nil)
|
||||
if err != nil || currentBlock == nil {
|
||||
t.Error("could not get current block")
|
||||
}
|
||||
|
||||
count, err := sim.TransactionCount(bgCtx, currentBlock.Hash())
|
||||
if err != nil {
|
||||
t.Error("could not get current block's transaction count")
|
||||
}
|
||||
|
||||
if count != 0 {
|
||||
t.Errorf("expected transaction count of %v does not match actual count of %v", 0, count)
|
||||
}
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
|
||||
lastBlock, err := sim.BlockByNumber(bgCtx, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get header for tip of chain: %v", err)
|
||||
}
|
||||
|
||||
count, err = sim.TransactionCount(bgCtx, lastBlock.Hash())
|
||||
if err != nil {
|
||||
t.Error("could not get current block's transaction count")
|
||||
}
|
||||
|
||||
if count != 1 {
|
||||
t.Errorf("expected transaction count of %v does not match actual count of %v", 1, count)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_TransactionInBlock(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
transaction, err := sim.TransactionInBlock(bgCtx, sim.pendingBlock.Hash(), uint(0))
|
||||
if err == nil && err != errTransactionDoesNotExist {
|
||||
t.Errorf("expected a transaction does not exist error to be received but received %v", err)
|
||||
}
|
||||
if transaction != nil {
|
||||
t.Errorf("expected transaction to be nil but received %v", transaction)
|
||||
}
|
||||
|
||||
// expect pending nonce to be 0 since account has not been used
|
||||
pendingNonce, err := sim.PendingNonceAt(bgCtx, testAddr)
|
||||
if err != nil {
|
||||
t.Errorf("did not get the pending nonce: %v", err)
|
||||
}
|
||||
|
||||
if pendingNonce != uint64(0) {
|
||||
t.Errorf("expected pending nonce of 0 got %v", pendingNonce)
|
||||
}
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
|
||||
lastBlock, err := sim.BlockByNumber(bgCtx, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get header for tip of chain: %v", err)
|
||||
}
|
||||
|
||||
transaction, err = sim.TransactionInBlock(bgCtx, lastBlock.Hash(), uint(1))
|
||||
if err == nil && err != errTransactionDoesNotExist {
|
||||
t.Errorf("expected a transaction does not exist error to be received but received %v", err)
|
||||
}
|
||||
if transaction != nil {
|
||||
t.Errorf("expected transaction to be nil but received %v", transaction)
|
||||
}
|
||||
|
||||
transaction, err = sim.TransactionInBlock(bgCtx, lastBlock.Hash(), uint(0))
|
||||
if err != nil {
|
||||
t.Errorf("could not get transaction in the lastest block with hash %v: %v", lastBlock.Hash().String(), err)
|
||||
}
|
||||
|
||||
if signedTx.Hash().String() != transaction.Hash().String() {
|
||||
t.Errorf("received transaction that did not match the sent transaction. expected hash %v, got hash %v", signedTx.Hash().String(), transaction.Hash().String())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_PendingNonceAt(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
// expect pending nonce to be 0 since account has not been used
|
||||
pendingNonce, err := sim.PendingNonceAt(bgCtx, testAddr)
|
||||
if err != nil {
|
||||
t.Errorf("did not get the pending nonce: %v", err)
|
||||
}
|
||||
|
||||
if pendingNonce != uint64(0) {
|
||||
t.Errorf("expected pending nonce of 0 got %v", pendingNonce)
|
||||
}
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
|
||||
// expect pending nonce to be 1 since account has submitted one transaction
|
||||
pendingNonce, err = sim.PendingNonceAt(bgCtx, testAddr)
|
||||
if err != nil {
|
||||
t.Errorf("did not get the pending nonce: %v", err)
|
||||
}
|
||||
|
||||
if pendingNonce != uint64(1) {
|
||||
t.Errorf("expected pending nonce of 1 got %v", pendingNonce)
|
||||
}
|
||||
|
||||
// make a new transaction with a nonce of 1
|
||||
tx = types.NewTransaction(uint64(1), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err = types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not send tx: %v", err)
|
||||
}
|
||||
|
||||
// expect pending nonce to be 2 since account now has two transactions
|
||||
pendingNonce, err = sim.PendingNonceAt(bgCtx, testAddr)
|
||||
if err != nil {
|
||||
t.Errorf("did not get the pending nonce: %v", err)
|
||||
}
|
||||
|
||||
if pendingNonce != uint64(2) {
|
||||
t.Errorf("expected pending nonce of 2 got %v", pendingNonce)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_TransactionReceipt(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
}, 10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
// create a signed transaction to send
|
||||
tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, big.NewInt(1), nil)
|
||||
signedTx, err := types.SignTx(tx, types.HomesteadSigner{}, testKey)
|
||||
if err != nil {
|
||||
t.Errorf("could not sign tx: %v", err)
|
||||
}
|
||||
|
||||
// send tx to simulated backend
|
||||
err = sim.SendTransaction(bgCtx, signedTx)
|
||||
if err != nil {
|
||||
t.Errorf("could not add tx to pending block: %v", err)
|
||||
}
|
||||
sim.Commit()
|
||||
|
||||
receipt, err := sim.TransactionReceipt(bgCtx, signedTx.Hash())
|
||||
if err != nil {
|
||||
t.Errorf("could not get transaction receipt: %v", err)
|
||||
}
|
||||
|
||||
if receipt.ContractAddress != testAddr && receipt.TxHash != signedTx.Hash() {
|
||||
t.Errorf("received receipt is not correct: %v", receipt)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_SuggestGasPrice(t *testing.T) {
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{},
|
||||
10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
gasPrice, err := sim.SuggestGasPrice(bgCtx)
|
||||
if err != nil {
|
||||
t.Errorf("could not get gas price: %v", err)
|
||||
}
|
||||
if gasPrice.Uint64() != uint64(1) {
|
||||
t.Errorf("gas price was not expected value of 1. actual: %v", gasPrice.Uint64())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_PendingCodeAt(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
},
|
||||
10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
code, err := sim.CodeAt(bgCtx, testAddr, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
if len(code) != 0 {
|
||||
t.Errorf("got code for account that does not have contract code")
|
||||
}
|
||||
|
||||
parsed, err := abi.JSON(strings.NewReader(abiJSON))
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
auth := bind.NewKeyedTransactor(testKey)
|
||||
contractAddr, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(abiBin), sim)
|
||||
if err != nil {
|
||||
t.Errorf("could not deploy contract: %v tx: %v contract: %v", err, tx, contract)
|
||||
}
|
||||
|
||||
code, err = sim.PendingCodeAt(bgCtx, contractAddr)
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
if len(code) == 0 {
|
||||
t.Errorf("did not get code for account that has contract code")
|
||||
}
|
||||
// ensure code received equals code deployed
|
||||
if !bytes.Equal(code, common.FromHex(deployedCode)) {
|
||||
t.Errorf("code received did not match expected deployed code:\n expected %v\n actual %v", common.FromHex(deployedCode), code)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSimulatedBackend_CodeAt(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
},
|
||||
10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
code, err := sim.CodeAt(bgCtx, testAddr, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
if len(code) != 0 {
|
||||
t.Errorf("got code for account that does not have contract code")
|
||||
}
|
||||
|
||||
parsed, err := abi.JSON(strings.NewReader(abiJSON))
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
auth := bind.NewKeyedTransactor(testKey)
|
||||
contractAddr, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(abiBin), sim)
|
||||
if err != nil {
|
||||
t.Errorf("could not deploy contract: %v tx: %v contract: %v", err, tx, contract)
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
code, err = sim.CodeAt(bgCtx, contractAddr, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
if len(code) == 0 {
|
||||
t.Errorf("did not get code for account that has contract code")
|
||||
}
|
||||
// ensure code received equals code deployed
|
||||
if !bytes.Equal(code, common.FromHex(deployedCode)) {
|
||||
t.Errorf("code received did not match expected deployed code:\n expected %v\n actual %v", common.FromHex(deployedCode), code)
|
||||
}
|
||||
}
|
||||
|
||||
// When receive("X") is called with sender 0x00... and value 1, it produces this tx receipt:
|
||||
// receipt{status=1 cgas=23949 bloom=00000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000040200000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 logs=[log: b6818c8064f645cd82d99b59a1a267d6d61117ef [75fd880d39c1daf53b6547ab6cb59451fc6452d27caa90e5b6649dd8293b9eed] 000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158 9ae378b6d4409eada347a5dc0c180f186cb62dc68fcc0f043425eb917335aa28 0 95d429d309bb9d753954195fe2d69bd140b4ae731b9b5b605c34323de162cf00 0]}
|
||||
func TestSimulatedBackend_PendingAndCallContract(t *testing.T) {
|
||||
testAddr := crypto.PubkeyToAddress(testKey.PublicKey)
|
||||
sim := NewSimulatedBackend(
|
||||
core.GenesisAlloc{
|
||||
testAddr: {Balance: big.NewInt(10000000000)},
|
||||
},
|
||||
10000000,
|
||||
)
|
||||
defer sim.Close()
|
||||
bgCtx := context.Background()
|
||||
|
||||
parsed, err := abi.JSON(strings.NewReader(abiJSON))
|
||||
if err != nil {
|
||||
t.Errorf("could not get code at test addr: %v", err)
|
||||
}
|
||||
contractAuth := bind.NewKeyedTransactor(testKey)
|
||||
addr, _, _, err := bind.DeployContract(contractAuth, parsed, common.FromHex(abiBin), sim)
|
||||
if err != nil {
|
||||
t.Errorf("could not deploy contract: %v", err)
|
||||
}
|
||||
|
||||
input, err := parsed.Pack("receive", []byte("X"))
|
||||
if err != nil {
|
||||
t.Errorf("could pack receive function on contract: %v", err)
|
||||
}
|
||||
|
||||
// make sure you can call the contract in pending state
|
||||
res, err := sim.PendingCallContract(bgCtx, ethereum.CallMsg{
|
||||
From: testAddr,
|
||||
To: &addr,
|
||||
Data: input,
|
||||
})
|
||||
if err != nil {
|
||||
t.Errorf("could not call receive method on contract: %v", err)
|
||||
}
|
||||
if len(res) == 0 {
|
||||
t.Errorf("result of contract call was empty: %v", res)
|
||||
}
|
||||
|
||||
// while comparing against the byte array is more exact, also compare against the human readable string for readability
|
||||
if !bytes.Equal(res, expectedReturn) || !strings.Contains(string(res), "hello world") {
|
||||
t.Errorf("response from calling contract was expected to be 'hello world' instead received %v", string(res))
|
||||
}
|
||||
|
||||
sim.Commit()
|
||||
|
||||
// make sure you can call the contract
|
||||
res, err = sim.CallContract(bgCtx, ethereum.CallMsg{
|
||||
From: testAddr,
|
||||
To: &addr,
|
||||
Data: input,
|
||||
}, nil)
|
||||
if err != nil {
|
||||
t.Errorf("could not call receive method on contract: %v", err)
|
||||
}
|
||||
if len(res) == 0 {
|
||||
t.Errorf("result of contract call was empty: %v", res)
|
||||
}
|
||||
|
||||
if !bytes.Equal(res, expectedReturn) || !strings.Contains(string(res), "hello world") {
|
||||
t.Errorf("response from calling contract was expected to be 'hello world' instead received %v", string(res))
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user