6a6d377259
Create simple running blockchain node with a single validator and test both contract deployment and method invocations. Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
292 lines
9.4 KiB
Go
292 lines
9.4 KiB
Go
package tests
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import (
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"encoding/hex"
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"encoding/json"
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"path"
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"strings"
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"testing"
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"github.com/nspcc-dev/neo-go/cli/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/compiler"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"github.com/nspcc-dev/neo-go/pkg/core"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/fee"
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"github.com/nspcc-dev/neo-go/pkg/core/native"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/core/storage"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/nef"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/vm/emit"
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"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap/zaptest"
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)
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const validatorWIF = "KxyjQ8eUa4FHt3Gvioyt1Wz29cTUrE4eTqX3yFSk1YFCsPL8uNsY"
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// CommitteeAcc is an account used to sign tx as a committee.
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var CommitteeAcc *wallet.Account
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func init() {
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CommitteeAcc, _ = wallet.NewAccountFromWIF(validatorWIF)
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pubs := keys.PublicKeys{CommitteeAcc.PrivateKey().PublicKey()}
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err := CommitteeAcc.ConvertMultisig(1, pubs)
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if err != nil {
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panic(err)
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}
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}
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var _nonce uint32
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func nonce() uint32 {
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_nonce++
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return _nonce
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}
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// NewChain creates new blockchain instance with a single validator and
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// setups cleanup functions.
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func NewChain(t *testing.T) *core.Blockchain {
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protoCfg := config.ProtocolConfiguration{
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Magic: netmode.UnitTestNet,
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P2PSigExtensions: true,
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SecondsPerBlock: 1,
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StandbyCommittee: []string{hex.EncodeToString(CommitteeAcc.PrivateKey().PublicKey().Bytes())},
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ValidatorsCount: 1,
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VerifyBlocks: true,
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VerifyTransactions: true,
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}
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st := storage.NewMemoryStore()
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log := zaptest.NewLogger(t)
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bc, err := core.NewBlockchain(st, protoCfg, log)
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require.NoError(t, err)
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go bc.Run()
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t.Cleanup(bc.Close)
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return bc
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}
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// PrepareInvoke creates new invocation transaction.
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// Signer can be either bool or *wallet.Account.
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// In the first case `true` means sign by committee, `false` means sign by validators.
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func PrepareInvoke(t *testing.T, bc *core.Blockchain, signer interface{},
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hash util.Uint160, method string, args ...interface{}) *transaction.Transaction {
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w := io.NewBufBinWriter()
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emit.AppCall(w.BinWriter, hash, method, callflag.All, args...)
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require.NoError(t, w.Err)
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script := w.Bytes()
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tx := transaction.New(script, 0)
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tx.Nonce = nonce()
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tx.ValidUntilBlock = bc.BlockHeight() + 1
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switch s := signer.(type) {
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case *wallet.Account:
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tx.Signers = append(tx.Signers, transaction.Signer{
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Account: s.Contract.ScriptHash(),
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Scopes: transaction.Global,
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})
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require.NoError(t, addNetworkFee(bc, tx, s))
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require.NoError(t, addSystemFee(bc, tx))
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require.NoError(t, s.SignTx(netmode.UnitTestNet, tx))
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case []*wallet.Account:
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for _, acc := range s {
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tx.Signers = append(tx.Signers, transaction.Signer{
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Account: acc.Contract.ScriptHash(),
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Scopes: transaction.Global,
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})
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require.NoError(t, addNetworkFee(bc, tx, acc))
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}
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require.NoError(t, addSystemFee(bc, tx))
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for _, acc := range s {
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require.NoError(t, acc.SignTx(netmode.UnitTestNet, tx))
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}
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default:
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panic("invalid signer")
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}
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return tx
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}
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// NewAccount creates new account and transfers 100.0 GAS to it.
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func NewAccount(t *testing.T, bc *core.Blockchain) *wallet.Account {
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acc, err := wallet.NewAccount()
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require.NoError(t, err)
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tx := PrepareInvoke(t, bc, CommitteeAcc,
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bc.UtilityTokenHash(), "transfer",
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CommitteeAcc.Contract.ScriptHash(), acc.Contract.ScriptHash(), int64(100_0000_0000), nil)
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AddBlock(t, bc, tx)
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CheckHalt(t, bc, tx.Hash())
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return acc
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}
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// DeployContract compiles and deploys contract to bc.
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// path should contain Go source files.
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// data is an optional argument to `_deploy`.
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func DeployContract(t *testing.T, bc *core.Blockchain, path string, data interface{}) util.Uint160 {
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tx, h := newDeployTx(t, bc, path, data)
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AddBlock(t, bc, tx)
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CheckHalt(t, bc, tx.Hash())
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return h
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}
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// CheckHalt checks that transaction persisted with HALT state.
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func CheckHalt(t *testing.T, bc *core.Blockchain, h util.Uint256, stack ...stackitem.Item) {
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aer, err := bc.GetAppExecResults(h, trigger.Application)
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require.NoError(t, err)
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require.Equal(t, vm.HaltState, aer[0].VMState, aer[0].FaultException)
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if len(stack) != 0 {
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require.Equal(t, stack, aer[0].Stack)
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}
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}
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// CheckFault checks that transaction persisted with FAULT state.
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// Raised exception is also checked to contain s as a substring.
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func CheckFault(t *testing.T, bc *core.Blockchain, h util.Uint256, s string) {
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aer, err := bc.GetAppExecResults(h, trigger.Application)
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require.NoError(t, err)
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require.Equal(t, vm.FaultState, aer[0].VMState)
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require.True(t, strings.Contains(aer[0].FaultException, s),
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"expected: %s, got: %s", s, aer[0].FaultException)
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}
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// newDeployTx returns new deployment tx for contract.
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func newDeployTx(t *testing.T, bc *core.Blockchain, ctrPath string, data interface{}) (*transaction.Transaction, util.Uint160) {
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// nef.NewFile() cares about version a lot.
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config.Version = "0.90.0-test"
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avm, di, err := compiler.CompileWithDebugInfo(ctrPath, nil)
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require.NoError(t, err)
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ne, err := nef.NewFile(avm)
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require.NoError(t, err)
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conf, err := smartcontract.ParseContractConfig(path.Join(ctrPath, "config.yml"))
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require.NoError(t, err)
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o := &compiler.Options{}
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o.Name = conf.Name
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o.ContractEvents = conf.Events
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o.ContractSupportedStandards = conf.SupportedStandards
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o.Permissions = make([]manifest.Permission, len(conf.Permissions))
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for i := range conf.Permissions {
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o.Permissions[i] = manifest.Permission(conf.Permissions[i])
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}
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o.SafeMethods = conf.SafeMethods
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m, err := compiler.CreateManifest(di, o)
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require.NoError(t, err)
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rawManifest, err := json.Marshal(m)
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require.NoError(t, err)
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neb, err := ne.Bytes()
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require.NoError(t, err)
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buf := io.NewBufBinWriter()
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emit.AppCall(buf.BinWriter, bc.ManagementContractHash(), "deploy", callflag.All, neb, rawManifest, data)
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require.NoError(t, buf.Err)
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tx := transaction.New(buf.Bytes(), 100*native.GASFactor)
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tx.Nonce = nonce()
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tx.ValidUntilBlock = bc.BlockHeight() + 1
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tx.Signers = []transaction.Signer{{Account: CommitteeAcc.Contract.ScriptHash()}}
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require.NoError(t, addNetworkFee(bc, tx, CommitteeAcc))
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require.NoError(t, CommitteeAcc.SignTx(netmode.UnitTestNet, tx))
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h := state.CreateContractHash(tx.Sender(), ne.Checksum, m.Name)
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return tx, h
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}
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func addSystemFee(bc *core.Blockchain, tx *transaction.Transaction) error {
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v, _ := TestInvoke(bc, tx) // ignore error to support failing transactions
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tx.SystemFee = v.GasConsumed()
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return nil
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}
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func addNetworkFee(bc *core.Blockchain, tx *transaction.Transaction, sender *wallet.Account) error {
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size := io.GetVarSize(tx)
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netFee, sizeDelta := fee.Calculate(bc.GetBaseExecFee(), sender.Contract.Script)
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tx.NetworkFee += netFee
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size += sizeDelta
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for _, cosigner := range tx.Signers {
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contract := bc.GetContractState(cosigner.Account)
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if contract != nil {
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netFee, sizeDelta = fee.Calculate(bc.GetBaseExecFee(), contract.NEF.Script)
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tx.NetworkFee += netFee
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size += sizeDelta
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}
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}
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tx.NetworkFee += int64(size) * bc.FeePerByte()
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return nil
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}
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// AddBlock creates a new block from provided transactions and adds it on bc.
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func AddBlock(t *testing.T, bc *core.Blockchain, txs ...*transaction.Transaction) *block.Block {
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lastBlock, err := bc.GetBlock(bc.GetHeaderHash(int(bc.BlockHeight())))
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require.NoError(t, err)
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b := &block.Block{
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Header: block.Header{
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NextConsensus: CommitteeAcc.Contract.ScriptHash(),
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Script: transaction.Witness{
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VerificationScript: CommitteeAcc.Contract.Script,
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},
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Timestamp: lastBlock.Timestamp + 1,
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},
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Transactions: txs,
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}
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b.PrevHash = lastBlock.Hash()
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b.Index = bc.BlockHeight() + 1
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b.RebuildMerkleRoot()
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sign := CommitteeAcc.PrivateKey().SignHashable(uint32(netmode.UnitTestNet), b)
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b.Script.InvocationScript = append([]byte{byte(opcode.PUSHDATA1), 64}, sign...)
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require.NoError(t, bc.AddBlock(b))
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return b
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}
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// AddBlockCheckHalt is a convenient wrapper over AddBlock and CheckHalt.
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func AddBlockCheckHalt(t *testing.T, bc *core.Blockchain, txs ...*transaction.Transaction) *block.Block {
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b := AddBlock(t, bc, txs...)
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for _, tx := range txs {
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CheckHalt(t, bc, tx.Hash())
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}
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return b
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}
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// CheckTestInvoke executes transaction without persisting it's state and
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// compares the result with the expected.
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func CheckTestInvoke(t *testing.T, bc *core.Blockchain, tx *transaction.Transaction, expected interface{}) {
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v, err := TestInvoke(bc, tx)
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require.NoError(t, err)
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require.Equal(t, 1, v.Estack().Len())
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require.Equal(t, stackitem.Make(expected), v.Estack().Pop().Item())
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}
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// TestInvoke creates a test VM with dummy block and executes transaction in it.
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func TestInvoke(bc *core.Blockchain, tx *transaction.Transaction) (*vm.VM, error) {
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lastBlock, err := bc.GetBlock(bc.GetHeaderHash(int(bc.BlockHeight())))
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if err != nil {
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return nil, err
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}
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b := &block.Block{Header: block.Header{
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Index: bc.BlockHeight() + 1,
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Timestamp: lastBlock.Timestamp + 1,
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}}
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v := bc.GetTestVM(trigger.Application, tx, b)
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v.LoadWithFlags(tx.Script, callflag.All)
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err = v.Run()
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return v, err
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}
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