package core import ( "bytes" "encoding/hex" "encoding/json" "fmt" "io/ioutil" "math/big" "os" "testing" "time" "github.com/nspcc-dev/neo-go/pkg/compiler" "github.com/nspcc-dev/neo-go/pkg/config" "github.com/nspcc-dev/neo-go/pkg/core/block" "github.com/nspcc-dev/neo-go/pkg/core/fee" "github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames" "github.com/nspcc-dev/neo-go/pkg/core/native" "github.com/nspcc-dev/neo-go/pkg/core/storage" "github.com/nspcc-dev/neo-go/pkg/core/transaction" "github.com/nspcc-dev/neo-go/pkg/crypto/hash" "github.com/nspcc-dev/neo-go/pkg/internal/testchain" "github.com/nspcc-dev/neo-go/pkg/internal/testserdes" "github.com/nspcc-dev/neo-go/pkg/io" "github.com/nspcc-dev/neo-go/pkg/smartcontract" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neo-go/pkg/vm/emit" "github.com/nspcc-dev/neo-go/pkg/vm/opcode" "github.com/nspcc-dev/neo-go/pkg/wallet" "github.com/stretchr/testify/require" "go.uber.org/zap/zaptest" ) // multisig address which possess all NEO var neoOwner = testchain.MultisigScriptHash() // newTestChain should be called before newBlock invocation to properly setup // global state. func newTestChain(t *testing.T) *Blockchain { unitTestNetCfg, err := config.Load("../../config", testchain.Network()) require.NoError(t, err) chain, err := NewBlockchain(storage.NewMemoryStore(), unitTestNetCfg.ProtocolConfiguration, zaptest.NewLogger(t)) require.NoError(t, err) go chain.Run() return chain } func (bc *Blockchain) newBlock(txs ...*transaction.Transaction) *block.Block { lastBlock := bc.topBlock.Load().(*block.Block) return newBlock(bc.config, lastBlock.Index+1, lastBlock.Hash(), txs...) } func newBlock(cfg config.ProtocolConfiguration, index uint32, prev util.Uint256, txs ...*transaction.Transaction) *block.Block { validators, _ := validatorsFromConfig(cfg) valScript, _ := smartcontract.CreateDefaultMultiSigRedeemScript(validators) witness := transaction.Witness{ VerificationScript: valScript, } b := &block.Block{ Base: block.Base{ Network: testchain.Network(), Version: 0, PrevHash: prev, Timestamp: uint64(time.Now().UTC().Unix())*1000 + uint64(index), Index: index, NextConsensus: witness.ScriptHash(), Script: witness, }, ConsensusData: block.ConsensusData{ PrimaryIndex: 0, Nonce: 1111, }, Transactions: txs, } b.RebuildMerkleRoot() b.Script.InvocationScript = testchain.Sign(b.GetSignedPart()) return b } func (bc *Blockchain) genBlocks(n int) ([]*block.Block, error) { blocks := make([]*block.Block, n) lastHash := bc.topBlock.Load().(*block.Block).Hash() lastIndex := bc.topBlock.Load().(*block.Block).Index for i := 0; i < n; i++ { blocks[i] = newBlock(bc.config, uint32(i)+lastIndex+1, lastHash) if err := bc.AddBlock(blocks[i]); err != nil { return blocks, err } lastHash = blocks[i].Hash() } return blocks, nil } func getDecodedBlock(t *testing.T, i int) *block.Block { data, err := getBlockData(i) require.NoError(t, err) b, err := hex.DecodeString(data["raw"].(string)) require.NoError(t, err) block := block.New(testchain.Network()) require.NoError(t, testserdes.DecodeBinary(b, block)) return block } func getBlockData(i int) (map[string]interface{}, error) { b, err := ioutil.ReadFile(fmt.Sprintf("test_data/block_%d.json", i)) if err != nil { return nil, err } var data map[string]interface{} if err := json.Unmarshal(b, &data); err != nil { return nil, err } return data, err } func newDumbBlock() *block.Block { return &block.Block{ Base: block.Base{ Network: testchain.Network(), Version: 0, PrevHash: hash.Sha256([]byte("a")), MerkleRoot: hash.Sha256([]byte("b")), Timestamp: 100500, Index: 1, NextConsensus: hash.Hash160([]byte("a")), Script: transaction.Witness{ VerificationScript: []byte{0x51}, // PUSH1 InvocationScript: []byte{0x61}, // NOP }, }, ConsensusData: block.ConsensusData{ PrimaryIndex: 0, Nonce: 1111, }, Transactions: []*transaction.Transaction{ transaction.New(testchain.Network(), []byte{byte(opcode.PUSH1)}, 0), }, } } // This function generates "../rpc/testdata/testblocks.acc" file which contains data // for RPC unit tests. It also is a nice integration test. // To generate new "../rpc/testdata/testblocks.acc", follow the steps: // 1. Set saveChain down below to true // 2. Run tests with `$ make test` func TestCreateBasicChain(t *testing.T) { const saveChain = false const prefix = "../rpc/server/testdata/" // To make enough GAS. const numOfEmptyBlocks = 200 // Increase in case if you need more blocks const validUntilBlock = numOfEmptyBlocks + 1000 // To be incremented after each created transaction to keep chain constant. var testNonce uint32 = 1 // Use as nonce when new transaction is created to avoid random data in tests. getNextNonce := func() uint32 { testNonce++ return testNonce } const neoAmount = 99999000 bc := newTestChain(t) defer bc.Close() gasHash := bc.contracts.GAS.Hash neoHash := bc.contracts.NEO.Hash policyHash := bc.contracts.Policy.Hash t.Logf("native GAS hash: %v", gasHash) t.Logf("native NEO hash: %v", neoHash) t.Logf("native Policy hash: %v", policyHash) priv0 := testchain.PrivateKeyByID(0) priv0ScriptHash := priv0.GetScriptHash() require.Equal(t, big.NewInt(5000_0000), bc.GetUtilityTokenBalance(priv0ScriptHash)) // gas bounty // Move some NEO to one simple account. txMoveNeo := newNEP5Transfer(neoHash, neoOwner, priv0ScriptHash, neoAmount) txMoveNeo.ValidUntilBlock = validUntilBlock txMoveNeo.Nonce = getNextNonce() txMoveNeo.Signers = []transaction.Signer{{ Account: neoOwner, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }} require.NoError(t, signTx(bc, txMoveNeo)) // Move some GAS to one simple account. txMoveGas := newNEP5Transfer(gasHash, neoOwner, priv0ScriptHash, int64(util.Fixed8FromInt64(1000))) txMoveGas.ValidUntilBlock = validUntilBlock txMoveGas.Nonce = getNextNonce() txMoveGas.Signers = []transaction.Signer{{ Account: neoOwner, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }} require.NoError(t, signTx(bc, txMoveGas)) b := bc.newBlock(txMoveNeo, txMoveGas) require.NoError(t, bc.AddBlock(b)) t.Logf("Block1 hash: %s", b.Hash().StringLE()) bw := io.NewBufBinWriter() b.EncodeBinary(bw.BinWriter) require.NoError(t, bw.Err) t.Logf("Block1 hex: %s", hex.EncodeToString(bw.Bytes())) t.Logf("txMoveNeo hash: %s", txMoveNeo.Hash().StringLE()) t.Logf("txMoveNeo hex: %s", hex.EncodeToString(txMoveNeo.Bytes())) t.Logf("txMoveGas hash: %s", txMoveGas.Hash().StringLE()) require.True(t, bc.GetUtilityTokenBalance(priv0ScriptHash).Cmp(big.NewInt(1000*native.GASFactor)) >= 0) // info for getblockheader rpc tests t.Logf("header hash: %s", b.Hash().StringLE()) buf := io.NewBufBinWriter() b.Header().EncodeBinary(buf.BinWriter) t.Logf("header: %s", hex.EncodeToString(buf.Bytes())) acc0, err := wallet.NewAccountFromWIF(priv0.WIF()) require.NoError(t, err) // Push some contract into the chain. txDeploy, avm := newDeployTx(t, prefix+"test_contract.go") txDeploy.Nonce = getNextNonce() txDeploy.ValidUntilBlock = validUntilBlock txDeploy.Signers = []transaction.Signer{{Account: priv0ScriptHash}} require.NoError(t, addNetworkFee(bc, txDeploy, acc0)) require.NoError(t, acc0.SignTx(txDeploy)) b = bc.newBlock(txDeploy) require.NoError(t, bc.AddBlock(b)) t.Logf("txDeploy: %s", txDeploy.Hash().StringLE()) t.Logf("Block2 hash: %s", b.Hash().StringLE()) // Now invoke this contract. script := io.NewBufBinWriter() emit.AppCallWithOperationAndArgs(script.BinWriter, hash.Hash160(avm), "putValue", "testkey", "testvalue") txInv := transaction.New(testchain.Network(), script.Bytes(), 1*native.GASFactor) txInv.Nonce = getNextNonce() txInv.ValidUntilBlock = validUntilBlock txInv.Signers = []transaction.Signer{{Account: priv0ScriptHash}} require.NoError(t, addNetworkFee(bc, txInv, acc0)) require.NoError(t, acc0.SignTx(txInv)) b = bc.newBlock(txInv) require.NoError(t, bc.AddBlock(b)) t.Logf("txInv: %s", txInv.Hash().StringLE()) priv1 := testchain.PrivateKeyByID(1) txNeo0to1 := newNEP5Transfer(neoHash, priv0ScriptHash, priv1.GetScriptHash(), 1000) txNeo0to1.Nonce = getNextNonce() txNeo0to1.ValidUntilBlock = validUntilBlock txNeo0to1.Signers = []transaction.Signer{ { Account: priv0ScriptHash, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }, } require.NoError(t, addNetworkFee(bc, txNeo0to1, acc0)) require.NoError(t, acc0.SignTx(txNeo0to1)) b = bc.newBlock(txNeo0to1) require.NoError(t, bc.AddBlock(b)) sh := hash.Hash160(avm) w := io.NewBufBinWriter() emit.AppCallWithOperationAndArgs(w.BinWriter, sh, "init") initTx := transaction.New(testchain.Network(), w.Bytes(), 1*native.GASFactor) initTx.Nonce = getNextNonce() initTx.ValidUntilBlock = validUntilBlock initTx.Signers = []transaction.Signer{{Account: priv0ScriptHash}} require.NoError(t, addNetworkFee(bc, initTx, acc0)) require.NoError(t, acc0.SignTx(initTx)) transferTx := newNEP5Transfer(sh, sh, priv0.GetScriptHash(), 1000) transferTx.Nonce = getNextNonce() transferTx.ValidUntilBlock = validUntilBlock transferTx.Signers = []transaction.Signer{ { Account: priv0ScriptHash, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }, } require.NoError(t, addNetworkFee(bc, transferTx, acc0)) require.NoError(t, acc0.SignTx(transferTx)) b = bc.newBlock(initTx, transferTx) require.NoError(t, bc.AddBlock(b)) t.Logf("recieveRublesTx: %v", transferTx.Hash().StringLE()) transferTx = newNEP5Transfer(sh, priv0.GetScriptHash(), priv1.GetScriptHash(), 123) transferTx.Nonce = getNextNonce() transferTx.ValidUntilBlock = validUntilBlock transferTx.Signers = []transaction.Signer{ { Account: priv0ScriptHash, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }, } require.NoError(t, addNetworkFee(bc, transferTx, acc0)) require.NoError(t, acc0.SignTx(transferTx)) b = bc.newBlock(transferTx) require.NoError(t, bc.AddBlock(b)) t.Logf("sendRublesTx: %v", transferTx.Hash().StringLE()) // Push verification contract into the chain. txDeploy2, _ := newDeployTx(t, prefix+"verification_contract.go") txDeploy2.Nonce = getNextNonce() txDeploy2.ValidUntilBlock = validUntilBlock txDeploy2.Signers = []transaction.Signer{{Account: priv0ScriptHash}} require.NoError(t, addNetworkFee(bc, txDeploy2, acc0)) require.NoError(t, acc0.SignTx(txDeploy2)) b = bc.newBlock(txDeploy2) require.NoError(t, bc.AddBlock(b)) if saveChain { outStream, err := os.Create(prefix + "testblocks.acc") require.NoError(t, err) defer outStream.Close() writer := io.NewBinWriterFromIO(outStream) count := bc.BlockHeight() + 1 writer.WriteU32LE(count - 1) for i := 1; i < int(count); i++ { bh := bc.GetHeaderHash(i) b, err := bc.GetBlock(bh) require.NoError(t, err) bytes, err := testserdes.EncodeBinary(b) require.NoError(t, err) writer.WriteU32LE(uint32(len(bytes))) writer.WriteBytes(bytes) require.NoError(t, writer.Err) } } // Prepare some transaction for future submission. txSendRaw := newNEP5Transfer(neoHash, priv0ScriptHash, priv1.GetScriptHash(), int64(util.Fixed8FromInt64(1000))) txSendRaw.ValidUntilBlock = validUntilBlock txSendRaw.Nonce = getNextNonce() txSendRaw.Signers = []transaction.Signer{{ Account: priv0ScriptHash, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }} require.NoError(t, addNetworkFee(bc, txSendRaw, acc0)) require.NoError(t, acc0.SignTx(txSendRaw)) bw = io.NewBufBinWriter() txSendRaw.EncodeBinary(bw.BinWriter) t.Logf("sendrawtransaction: %s", hex.EncodeToString(bw.Bytes())) } func newNEP5Transfer(sc, from, to util.Uint160, amount int64) *transaction.Transaction { w := io.NewBufBinWriter() emit.AppCallWithOperationAndArgs(w.BinWriter, sc, "transfer", from, to, amount) emit.Opcodes(w.BinWriter, opcode.ASSERT) script := w.Bytes() return transaction.New(testchain.Network(), script, 10000000) } func newDeployTx(t *testing.T, name string) (*transaction.Transaction, []byte) { c, err := ioutil.ReadFile(name) require.NoError(t, err) avm, di, err := compiler.CompileWithDebugInfo(name, bytes.NewReader(c)) require.NoError(t, err) t.Logf("contractHash (%s): %s", name, hash.Hash160(avm).StringLE()) t.Logf("contractScript: %x", avm) script := io.NewBufBinWriter() m, err := di.ConvertToManifest(nil) require.NoError(t, err) bs, err := m.MarshalJSON() require.NoError(t, err) emit.Bytes(script.BinWriter, bs) emit.Bytes(script.BinWriter, avm) emit.Syscall(script.BinWriter, interopnames.SystemContractCreate) txScript := script.Bytes() return transaction.New(testchain.Network(), txScript, 100*native.GASFactor), avm } func addSigners(txs ...*transaction.Transaction) { for _, tx := range txs { tx.Signers = []transaction.Signer{{ Account: neoOwner, Scopes: transaction.CalledByEntry, AllowedContracts: nil, AllowedGroups: nil, }} } } func signTx(bc *Blockchain, txs ...*transaction.Transaction) error { validators := bc.GetStandByValidators() rawScript, err := smartcontract.CreateDefaultMultiSigRedeemScript(validators) if err != nil { return fmt.Errorf("failed to sign tx: %w", err) } for _, tx := range txs { size := io.GetVarSize(tx) netFee, sizeDelta := fee.Calculate(rawScript) tx.NetworkFee += netFee size += sizeDelta tx.NetworkFee += int64(size) * bc.FeePerByte() data := tx.GetSignedPart() tx.Scripts = []transaction.Witness{{ InvocationScript: testchain.Sign(data), VerificationScript: rawScript, }} } return nil } func addNetworkFee(bc *Blockchain, tx *transaction.Transaction, sender *wallet.Account) error { size := io.GetVarSize(tx) netFee, sizeDelta := fee.Calculate(sender.Contract.Script) tx.NetworkFee += netFee size += sizeDelta for _, cosigner := range tx.Signers { contract := bc.GetContractState(cosigner.Account) if contract != nil { netFee, sizeDelta = fee.Calculate(contract.Script) tx.NetworkFee += netFee size += sizeDelta } } tx.NetworkFee += int64(size) * bc.FeePerByte() return nil }