diff options
Diffstat (limited to 'tests/blocktest.go')
| -rw-r--r-- | tests/blocktest.go | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/tests/blocktest.go b/tests/blocktest.go new file mode 100644 index 000000000..4bb066c3d --- /dev/null +++ b/tests/blocktest.go @@ -0,0 +1,240 @@ +package tests + +import ( + "bytes" + "encoding/hex" + "encoding/json" + "errors" + "fmt" + "io/ioutil" + "math/big" + "runtime" + "strconv" + "strings" + + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/ethutil" + "github.com/ethereum/go-ethereum/rlp" + "github.com/ethereum/go-ethereum/state" +) + +// Block Test JSON Format + +type btJSON struct { + Blocks []btBlock + GenesisBlockHeader btHeader + Pre map[string]btAccount +} + +type btAccount struct { + Balance string + Code string + Nonce string + Storage map[string]string +} + +type btHeader struct { + Bloom string + Coinbase string + MixHash string + Nonce string + Number string + ParentHash string + ReceiptTrie string + SeedHash string + StateRoot string + TransactionsTrie string + UncleHash string + + ExtraData string + Difficulty string + GasLimit string + GasUsed string + Timestamp string +} + +type btTransaction struct { + Data string + GasLimit string + GasPrice string + Nonce string + R string + S string + To string + V string + Value string +} + +type btBlock struct { + BlockHeader *btHeader + Rlp string + Transactions []btTransaction + UncleHeaders []string +} + +type BlockTest struct { + Genesis *types.Block + Blocks []*types.Block + + preAccounts map[string]btAccount +} + +// LoadBlockTests loads a block test JSON file. +func LoadBlockTests(file string) (map[string]*BlockTest, error) { + bt := make(map[string]*btJSON) + if err := loadJSON(file, &bt); err != nil { + return nil, err + } + out := make(map[string]*BlockTest) + for name, in := range bt { + var err error + if out[name], err = convertTest(in); err != nil { + return nil, fmt.Errorf("bad test %q: %v", err) + } + } + return out, nil +} + +// InsertPreState populates the given database with the genesis +// accounts defined by the test. +func (t *BlockTest) InsertPreState(db ethutil.Database) error { + statedb := state.New(nil, db) + for addrString, acct := range t.preAccounts { + // XXX: is is worth it checking for errors here? + addr, _ := hex.DecodeString(addrString) + code, _ := hex.DecodeString(strings.TrimPrefix(acct.Code, "0x")) + balance, _ := new(big.Int).SetString(acct.Balance, 0) + nonce, _ := strconv.ParseUint(acct.Nonce, 16, 64) + + obj := statedb.NewStateObject(addr) + obj.SetCode(code) + obj.SetBalance(balance) + obj.SetNonce(nonce) + // for k, v := range acct.Storage { + // obj.SetState(k, v) + // } + } + // sync objects to trie + statedb.Update(nil) + // sync trie to disk + statedb.Sync() + + if !bytes.Equal(t.Genesis.Root(), statedb.Root()) { + return errors.New("computed state root does not match genesis block") + } + return nil +} + +func convertTest(in *btJSON) (out *BlockTest, err error) { + // the conversion handles errors by catching panics. + // you might consider this ugly, but the alternative (passing errors) + // would be much harder to read. + defer func() { + if recovered := recover(); recovered != nil { + buf := make([]byte, 64<<10) + buf = buf[:runtime.Stack(buf, false)] + err = fmt.Errorf("%v\n%s", recovered, buf) + } + }() + out = &BlockTest{preAccounts: in.Pre} + out.Genesis = mustConvertGenesis(in.GenesisBlockHeader) + out.Blocks = mustConvertBlocks(in.Blocks) + return out, err +} + +func mustConvertGenesis(testGenesis btHeader) *types.Block { + hdr := mustConvertHeader(testGenesis) + hdr.Number = big.NewInt(0) + b := types.NewBlockWithHeader(hdr) + b.Td = new(big.Int) + b.Reward = new(big.Int) + return b +} + +func mustConvertHeader(in btHeader) *types.Header { + // hex decode these fields + return &types.Header{ + SeedHash: mustConvertBytes(in.SeedHash), + MixDigest: mustConvertBytes(in.MixHash), + Bloom: mustConvertBytes(in.Bloom), + ReceiptHash: mustConvertBytes(in.ReceiptTrie), + TxHash: mustConvertBytes(in.TransactionsTrie), + Root: mustConvertBytes(in.StateRoot), + Coinbase: mustConvertBytes(in.Coinbase), + UncleHash: mustConvertBytes(in.UncleHash), + ParentHash: mustConvertBytes(in.ParentHash), + Nonce: mustConvertBytes(in.Nonce), + Extra: string(mustConvertBytes(in.ExtraData)), + GasUsed: mustConvertBigInt10(in.GasUsed), + GasLimit: mustConvertBigInt10(in.GasLimit), + Difficulty: mustConvertBigInt10(in.Difficulty), + Time: mustConvertUint(in.Timestamp), + } +} + +func mustConvertBlocks(testBlocks []btBlock) []*types.Block { + var out []*types.Block + for i, inb := range testBlocks { + var b types.Block + r := bytes.NewReader(mustConvertBytes(inb.Rlp)) + if err := rlp.Decode(r, &b); err != nil { + panic(fmt.Errorf("invalid block %d: %q", i, inb.Rlp)) + } + out = append(out, &b) + } + return out +} + +func mustConvertBytes(in string) []byte { + out, err := hex.DecodeString(strings.TrimPrefix(in, "0x")) + if err != nil { + panic(fmt.Errorf("invalid hex: %q", in)) + } + return out +} + +func mustConvertBigInt10(in string) *big.Int { + out, ok := new(big.Int).SetString(in, 10) + if !ok { + panic(fmt.Errorf("invalid integer: %q", in)) + } + return out +} + +func mustConvertUint(in string) uint64 { + out, err := strconv.ParseUint(in, 0, 64) + if err != nil { + panic(fmt.Errorf("invalid integer: %q", in)) + } + return out +} + +// loadJSON reads the given file and unmarshals its content. +func loadJSON(file string, val interface{}) error { + content, err := ioutil.ReadFile(file) + if err != nil { + return err + } + if err := json.Unmarshal(content, val); err != nil { + if syntaxerr, ok := err.(*json.SyntaxError); ok { + line := findLine(content, syntaxerr.Offset) + return fmt.Errorf("JSON syntax error at %v:%v: %v", file, line, err) + } + return fmt.Errorf("JSON unmarshal error in %v: %v", file, err) + } + return nil +} + +// findLine returns the line number for the given offset into data. +func findLine(data []byte, offset int64) (line int) { + line = 1 + for i, r := range string(data) { + if int64(i) >= offset { + return + } + if r == '\n' { + line++ + } + } + return +} |