mirror of
https://github.com/nspcc-dev/neo-go.git
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42ae226f9e
When native method calls other contract result should be put on the stack of current context. With oracles this problem wasn't noticed because of void return type.
302 lines
8.9 KiB
Go
302 lines
8.9 KiB
Go
package core
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import (
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"math/big"
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"testing"
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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/dao"
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"github.com/nspcc-dev/neo-go/pkg/core/interop"
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"github.com/nspcc-dev/neo-go/pkg/core/interop/contract"
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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/io"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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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/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/stackitem"
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"github.com/stretchr/testify/require"
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)
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type testNative struct {
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meta interop.ContractMD
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blocks chan uint32
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}
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func (tn *testNative) Initialize(_ *interop.Context) error {
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return nil
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}
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func (tn *testNative) Metadata() *interop.ContractMD {
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return &tn.meta
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}
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func (tn *testNative) OnPersist(ic *interop.Context, _ []stackitem.Item) stackitem.Item {
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if ic.Trigger != trigger.OnPersist {
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panic("invalid trigger")
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}
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select {
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case tn.blocks <- ic.Block.Index:
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return stackitem.NewBool(true)
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default:
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return stackitem.NewBool(false)
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}
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}
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var _ interop.Contract = (*testNative)(nil)
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// registerNative registers native contract in the blockchain.
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func (bc *Blockchain) registerNative(c interop.Contract) {
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bc.contracts.Contracts = append(bc.contracts.Contracts, c)
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}
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const testSumPrice = 1000000
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func newTestNative() *testNative {
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tn := &testNative{
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meta: *interop.NewContractMD("Test.Native.Sum"),
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blocks: make(chan uint32, 1),
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}
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desc := &manifest.Method{
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Name: "sum",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("addend1", smartcontract.IntegerType),
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manifest.NewParameter("addend2", smartcontract.IntegerType),
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},
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ReturnType: smartcontract.IntegerType,
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}
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md := &interop.MethodAndPrice{
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Func: tn.sum,
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Price: testSumPrice,
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RequiredFlags: smartcontract.NoneFlag,
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}
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tn.meta.AddMethod(md, desc, true)
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desc = &manifest.Method{
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Name: "callOtherContractNoReturn",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("contractHash", smartcontract.Hash160Type),
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manifest.NewParameter("method", smartcontract.StringType),
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manifest.NewParameter("arg", smartcontract.ArrayType),
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},
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ReturnType: smartcontract.VoidType,
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}
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md = &interop.MethodAndPrice{
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Func: tn.callOtherContractNoReturn,
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Price: testSumPrice,
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RequiredFlags: smartcontract.NoneFlag}
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tn.meta.AddMethod(md, desc, true)
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desc = &manifest.Method{Name: "onPersist", ReturnType: smartcontract.BoolType}
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md = &interop.MethodAndPrice{Func: tn.OnPersist, RequiredFlags: smartcontract.AllowModifyStates}
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tn.meta.AddMethod(md, desc, false)
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return tn
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}
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func (tn *testNative) sum(_ *interop.Context, args []stackitem.Item) stackitem.Item {
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s1, err := args[0].TryInteger()
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if err != nil {
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panic(err)
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}
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s2, err := args[1].TryInteger()
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if err != nil {
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panic(err)
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}
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return stackitem.NewBigInteger(s1.Add(s1, s2))
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}
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func toUint160(item stackitem.Item) util.Uint160 {
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bs, err := item.TryBytes()
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if err != nil {
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panic(err)
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}
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u, err := util.Uint160DecodeBytesBE(bs)
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if err != nil {
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panic(err)
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}
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return u
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}
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func (tn *testNative) call(ic *interop.Context, args []stackitem.Item, retState vm.CheckReturnState) {
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cs, err := ic.DAO.GetContractState(toUint160(args[0]))
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if err != nil {
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panic(err)
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}
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bs, err := args[1].TryBytes()
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if err != nil {
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panic(err)
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}
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err = contract.CallExInternal(ic, cs, string(bs), args[2].Value().([]stackitem.Item), smartcontract.All, retState)
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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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func (tn *testNative) callOtherContractNoReturn(ic *interop.Context, args []stackitem.Item) stackitem.Item {
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tn.call(ic, args, vm.EnsureIsEmpty)
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return stackitem.Null{}
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}
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func TestNativeContract_Invoke(t *testing.T) {
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chain := newTestChain(t)
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defer chain.Close()
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tn := newTestNative()
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chain.registerNative(tn)
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err := chain.dao.PutContractState(&state.Contract{
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Script: tn.meta.Script,
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Manifest: tn.meta.Manifest,
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})
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require.NoError(t, err)
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w := io.NewBufBinWriter()
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emit.AppCallWithOperationAndArgs(w.BinWriter, tn.Metadata().Hash, "sum", int64(14), int64(28))
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script := w.Bytes()
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// System.Contract.Call + "sum" itself + opcodes for pushing arguments (PACK is 15000)
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tx := transaction.New(chain.GetConfig().Magic, script, testSumPrice*2+18000)
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validUntil := chain.blockHeight + 1
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tx.ValidUntilBlock = validUntil
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addSigners(tx)
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require.NoError(t, signTx(chain, tx))
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// Enough for Call and other opcodes, but not enough for "sum" call.
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tx2 := transaction.New(chain.GetConfig().Magic, script, testSumPrice*2+8000)
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tx2.ValidUntilBlock = chain.blockHeight + 1
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addSigners(tx2)
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require.NoError(t, signTx(chain, tx2))
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b := chain.newBlock(tx, tx2)
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require.NoError(t, chain.AddBlock(b))
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res, err := chain.GetAppExecResults(tx.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, 1, len(res))
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require.Equal(t, vm.HaltState, res[0].VMState)
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require.Equal(t, 1, len(res[0].Stack))
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require.Equal(t, big.NewInt(42), res[0].Stack[0].Value())
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res, err = chain.GetAppExecResults(tx2.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, 1, len(res))
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require.Equal(t, vm.FaultState, res[0].VMState)
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require.NoError(t, chain.persist())
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select {
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case index := <-tn.blocks:
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require.Equal(t, chain.blockHeight, index)
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default:
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require.Fail(t, "onPersist wasn't called")
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}
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}
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func TestNativeContract_InvokeInternal(t *testing.T) {
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chain := newTestChain(t)
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defer chain.Close()
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tn := newTestNative()
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chain.registerNative(tn)
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err := chain.dao.PutContractState(&state.Contract{
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Script: tn.meta.Script,
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Manifest: tn.meta.Manifest,
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})
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require.NoError(t, err)
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d := dao.NewSimple(storage.NewMemoryStore(), netmode.UnitTestNet, chain.config.StateRootInHeader)
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ic := chain.newInteropContext(trigger.Application, d, nil, nil)
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v := ic.SpawnVM()
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t.Run("fail, bad current script hash", func(t *testing.T) {
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v.LoadScriptWithHash([]byte{1}, util.Uint160{1, 2, 3}, smartcontract.All)
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v.Estack().PushVal(stackitem.NewArray([]stackitem.Item{stackitem.NewBigInteger(big.NewInt(14)), stackitem.NewBigInteger(big.NewInt(28))}))
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v.Estack().PushVal("sum")
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v.Estack().PushVal(tn.Metadata().Name)
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// it's prohibited to call natives directly
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require.Error(t, native.Call(ic))
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})
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t.Run("success", func(t *testing.T) {
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v.LoadScriptWithHash([]byte{1}, tn.Metadata().Hash, smartcontract.All)
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v.Estack().PushVal(stackitem.NewArray([]stackitem.Item{stackitem.NewBigInteger(big.NewInt(14)), stackitem.NewBigInteger(big.NewInt(28))}))
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v.Estack().PushVal("sum")
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v.Estack().PushVal(tn.Metadata().Name)
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require.NoError(t, native.Call(ic))
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value := v.Estack().Pop().BigInt()
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require.Equal(t, int64(42), value.Int64())
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})
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}
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func TestNativeContract_InvokeOtherContract(t *testing.T) {
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chain := newTestChain(t)
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defer chain.Close()
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tn := newTestNative()
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chain.registerNative(tn)
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err := chain.dao.PutContractState(&state.Contract{
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Script: tn.meta.Script,
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Manifest: tn.meta.Manifest,
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})
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require.NoError(t, err)
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cs, _ := getTestContractState()
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require.NoError(t, chain.dao.PutContractState(cs))
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t.Run("non-native, no return", func(t *testing.T) {
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w := io.NewBufBinWriter()
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emit.AppCallWithOperationAndArgs(w.BinWriter, tn.Metadata().Hash, "callOtherContractNoReturn",
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cs.ScriptHash(), "justReturn", []interface{}{})
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require.NoError(t, w.Err)
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script := w.Bytes()
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tx := transaction.New(chain.GetConfig().Magic, script, testSumPrice*4+10000)
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validUntil := chain.blockHeight + 1
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tx.ValidUntilBlock = validUntil
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addSigners(tx)
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require.NoError(t, signTx(chain, tx))
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b := chain.newBlock(tx)
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require.NoError(t, chain.AddBlock(b))
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res, err := chain.GetAppExecResults(tx.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, 1, len(res))
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require.Equal(t, vm.HaltState, res[0].VMState)
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require.Equal(t, 1, len(res[0].Stack))
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require.Equal(t, stackitem.Null{}, res[0].Stack[0]) // simple call is done with EnsureNotEmpty
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})
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}
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func TestAllContractsHaveName(t *testing.T) {
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bc := newTestChain(t)
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defer bc.Close()
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for _, c := range bc.contracts.Contracts {
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name := c.Metadata().Name
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t.Run(name, func(t *testing.T) {
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w := io.NewBufBinWriter()
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emit.AppCallWithOperationAndArgs(w.BinWriter, c.Metadata().Hash, "name")
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require.NoError(t, w.Err)
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tx := transaction.New(netmode.UnitTestNet, w.Bytes(), 1015570)
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tx.ValidUntilBlock = bc.blockHeight + 1
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addSigners(tx)
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require.NoError(t, signTx(bc, tx))
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require.NoError(t, bc.AddBlock(bc.newBlock(tx)))
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aers, err := bc.GetAppExecResults(tx.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, 1, len(aers))
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require.Len(t, aers[0].Stack, 1)
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require.Equal(t, []byte(name), aers[0].Stack[0].Value())
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})
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}
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}
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