package core import ( "testing" "time" "github.com/nspcc-dev/neo-go/pkg/core/block" "github.com/nspcc-dev/neo-go/pkg/core/state" "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/io" "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/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func TestAddHeaders(t *testing.T) { bc := newTestChain(t) defer bc.Close() lastBlock := bc.topBlock.Load().(*block.Block) h1 := newBlock(bc.config, 1, lastBlock.Hash()).Header() h2 := newBlock(bc.config, 2, h1.Hash()).Header() h3 := newBlock(bc.config, 3, h2.Hash()).Header() require.NoError(t, bc.AddHeaders()) require.NoError(t, bc.AddHeaders(h1, h2)) require.NoError(t, bc.AddHeaders(h2, h3)) assert.Equal(t, h3.Index, bc.HeaderHeight()) assert.Equal(t, uint32(0), bc.BlockHeight()) assert.Equal(t, h3.Hash(), bc.CurrentHeaderHash()) // Add them again, they should not be added. require.NoError(t, bc.AddHeaders(h3, h2, h1)) assert.Equal(t, h3.Index, bc.HeaderHeight()) assert.Equal(t, uint32(0), bc.BlockHeight()) assert.Equal(t, h3.Hash(), bc.CurrentHeaderHash()) h4 := newBlock(bc.config, 4, h3.Hash().Reverse()).Header() h5 := newBlock(bc.config, 5, h4.Hash()).Header() assert.Error(t, bc.AddHeaders(h4, h5)) assert.Equal(t, h3.Index, bc.HeaderHeight()) assert.Equal(t, uint32(0), bc.BlockHeight()) assert.Equal(t, h3.Hash(), bc.CurrentHeaderHash()) h6 := newBlock(bc.config, 4, h3.Hash()).Header() h6.Script.InvocationScript = nil assert.Error(t, bc.AddHeaders(h6)) assert.Equal(t, h3.Index, bc.HeaderHeight()) assert.Equal(t, uint32(0), bc.BlockHeight()) assert.Equal(t, h3.Hash(), bc.CurrentHeaderHash()) } func TestAddBlock(t *testing.T) { const size = 3 bc := newTestChain(t) blocks, err := bc.genBlocks(size) require.NoError(t, err) lastBlock := blocks[len(blocks)-1] assert.Equal(t, lastBlock.Index, bc.HeaderHeight()) assert.Equal(t, lastBlock.Hash(), bc.CurrentHeaderHash()) // This one tests persisting blocks, so it does need to persist() require.NoError(t, bc.persist()) for _, block := range blocks { key := storage.AppendPrefix(storage.DataBlock, block.Hash().BytesLE()) _, err := bc.dao.Store.Get(key) require.NoErrorf(t, err, "block %s not persisted", block.Hash()) } assert.Equal(t, lastBlock.Index, bc.BlockHeight()) assert.Equal(t, lastBlock.Hash(), bc.CurrentHeaderHash()) } func TestScriptFromWitness(t *testing.T) { witness := &transaction.Witness{} h := util.Uint160{1, 2, 3} res, err := ScriptFromWitness(h, witness) require.NoError(t, err) require.NotNil(t, res) witness.VerificationScript = []byte{4, 8, 15, 16, 23, 42} h = hash.Hash160(witness.VerificationScript) res, err = ScriptFromWitness(h, witness) require.NoError(t, err) require.NotNil(t, res) h[0] = ^h[0] res, err = ScriptFromWitness(h, witness) require.Error(t, err) require.Nil(t, res) } func TestGetHeader(t *testing.T) { bc := newTestChain(t) tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0) tx.ValidUntilBlock = bc.BlockHeight() + 1 assert.Nil(t, addSender(tx)) assert.Nil(t, signTx(bc, tx)) block := bc.newBlock(tx) err := bc.AddBlock(block) assert.Nil(t, err) // Test unpersisted and persisted access for i := 0; i < 2; i++ { hash := block.Hash() header, err := bc.GetHeader(hash) require.NoError(t, err) assert.Equal(t, block.Header(), header) b2 := bc.newBlock() _, err = bc.GetHeader(b2.Hash()) assert.Error(t, err) assert.NoError(t, bc.persist()) } } func TestGetBlock(t *testing.T) { bc := newTestChain(t) blocks, err := bc.genBlocks(100) require.NoError(t, err) // Test unpersisted and persisted access for j := 0; j < 2; j++ { for i := 0; i < len(blocks); i++ { block, err := bc.GetBlock(blocks[i].Hash()) require.NoErrorf(t, err, "can't get block %d: %s, attempt %d", i, err, j) assert.Equal(t, blocks[i].Index, block.Index) assert.Equal(t, blocks[i].Hash(), block.Hash()) } assert.NoError(t, bc.persist()) } } func TestHasBlock(t *testing.T) { bc := newTestChain(t) blocks, err := bc.genBlocks(50) require.NoError(t, err) // Test unpersisted and persisted access for j := 0; j < 2; j++ { for i := 0; i < len(blocks); i++ { assert.True(t, bc.HasBlock(blocks[i].Hash())) } newBlock := bc.newBlock() assert.False(t, bc.HasBlock(newBlock.Hash())) assert.NoError(t, bc.persist()) } } //TODO NEO3.0:Update binary /* func TestGetTransaction(t *testing.T) { b1 := getDecodedBlock(t, 1) block := getDecodedBlock(t, 2) bc := newTestChain(t) // Turn verification off, because these blocks are really from some other chain // and can't be verified, but we don't care about that in this test. bc.config.VerifyBlocks = false assert.Nil(t, bc.AddBlock(b1)) assert.Nil(t, bc.AddBlock(block)) // Test unpersisted and persisted access for j := 0; j < 2; j++ { tx, height, err := bc.GetTransaction(block.Transactions[0].Hash()) require.Nil(t, err) assert.Equal(t, block.Index, height) assert.Equal(t, block.Transactions[0], tx) assert.Equal(t, 10, io.GetVarSize(tx)) assert.Equal(t, 1, io.GetVarSize(tx.Attributes)) assert.Equal(t, 1, io.GetVarSize(tx.Inputs)) assert.Equal(t, 1, io.GetVarSize(tx.Outputs)) assert.Equal(t, 1, io.GetVarSize(tx.Scripts)) assert.NoError(t, bc.persist()) } } */ func TestGetClaimable(t *testing.T) { bc := newTestChain(t) bc.generationAmount = []int{4, 3, 2, 1} bc.decrementInterval = 2 _, err := bc.genBlocks(10) require.NoError(t, err) t.Run("first generation period", func(t *testing.T) { amount := bc.CalculateClaimable(1, 0, 2) require.EqualValues(t, 8, amount) }) t.Run("a number of full periods", func(t *testing.T) { amount := bc.CalculateClaimable(1, 0, 6) require.EqualValues(t, 4+4+3+3+2+2, amount) }) t.Run("start from the 2-nd block", func(t *testing.T) { amount := bc.CalculateClaimable(1, 1, 7) require.EqualValues(t, 4+3+3+2+2+1, amount) }) t.Run("end height after generation has ended", func(t *testing.T) { amount := bc.CalculateClaimable(1, 1, 10) require.EqualValues(t, 4+3+3+2+2+1+1, amount) }) } func TestClose(t *testing.T) { defer func() { r := recover() assert.NotNil(t, r) }() bc := newTestChain(t) _, err := bc.genBlocks(10) require.NoError(t, err) bc.Close() // It's a hack, but we use internal knowledge of MemoryStore // implementation which makes it completely unusable (up to panicing) // after Close(). _ = bc.dao.Store.Put([]byte{0}, []byte{1}) // This should never be executed. assert.Nil(t, t) } func TestSubscriptions(t *testing.T) { // We use buffering here as a substitute for reader goroutines, events // get queued up and we read them one by one here. const chBufSize = 16 blockCh := make(chan *block.Block, chBufSize) txCh := make(chan *transaction.Transaction, chBufSize) notificationCh := make(chan *state.NotificationEvent, chBufSize) executionCh := make(chan *state.AppExecResult, chBufSize) bc := newTestChain(t) bc.SubscribeForBlocks(blockCh) bc.SubscribeForTransactions(txCh) bc.SubscribeForNotifications(notificationCh) bc.SubscribeForExecutions(executionCh) assert.Empty(t, notificationCh) assert.Empty(t, executionCh) assert.Empty(t, blockCh) assert.Empty(t, txCh) blocks, err := bc.genBlocks(1) require.NoError(t, err) require.Eventually(t, func() bool { return len(blockCh) != 0 }, time.Second, 10*time.Millisecond) assert.Empty(t, notificationCh) assert.Empty(t, executionCh) assert.Empty(t, txCh) b := <-blockCh assert.Equal(t, blocks[0], b) assert.Empty(t, blockCh) script := io.NewBufBinWriter() emit.Bytes(script.BinWriter, []byte("yay!")) emit.Syscall(script.BinWriter, "Neo.Runtime.Notify") require.NoError(t, script.Err) txGood1 := transaction.New(script.Bytes(), 0) txGood1.Sender = neoOwner txGood1.Nonce = 1 txGood1.ValidUntilBlock = 100500 require.NoError(t, signTx(bc, txGood1)) // Reset() reuses the script buffer and we need to keep scripts. script = io.NewBufBinWriter() emit.Bytes(script.BinWriter, []byte("nay!")) emit.Syscall(script.BinWriter, "Neo.Runtime.Notify") emit.Opcode(script.BinWriter, opcode.THROW) require.NoError(t, script.Err) txBad := transaction.New(script.Bytes(), 0) txBad.Sender = neoOwner txBad.Nonce = 2 txBad.ValidUntilBlock = 100500 require.NoError(t, signTx(bc, txBad)) script = io.NewBufBinWriter() emit.Bytes(script.BinWriter, []byte("yay! yay! yay!")) emit.Syscall(script.BinWriter, "Neo.Runtime.Notify") require.NoError(t, script.Err) txGood2 := transaction.New(script.Bytes(), 0) txGood2.Sender = neoOwner txGood2.Nonce = 3 txGood2.ValidUntilBlock = 100500 require.NoError(t, signTx(bc, txGood2)) invBlock := newBlock(bc.config, bc.BlockHeight()+1, bc.CurrentHeaderHash(), txGood1, txBad, txGood2) require.NoError(t, bc.AddBlock(invBlock)) require.Eventually(t, func() bool { return len(blockCh) != 0 && len(txCh) != 0 && len(notificationCh) != 0 && len(executionCh) != 0 }, time.Second, 10*time.Millisecond) b = <-blockCh require.Equal(t, invBlock, b) assert.Empty(t, blockCh) // Follow in-block transaction order. for _, txExpected := range invBlock.Transactions { tx := <-txCh require.Equal(t, txExpected, tx) exec := <-executionCh require.Equal(t, tx.Hash(), exec.TxHash) if exec.VMState == "HALT" { notif := <-notificationCh require.Equal(t, hash.Hash160(tx.Script), notif.ScriptHash) } } assert.Empty(t, txCh) assert.Empty(t, notificationCh) assert.Empty(t, executionCh) bc.UnsubscribeFromBlocks(blockCh) bc.UnsubscribeFromTransactions(txCh) bc.UnsubscribeFromNotifications(notificationCh) bc.UnsubscribeFromExecutions(executionCh) // Ensure that new blocks are processed correctly after unsubscription. _, err = bc.genBlocks(2 * chBufSize) require.NoError(t, err) }