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move ANT prestate trace test out of eth/tracers/internal (#661)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // (c) 2024, Ava Labs, Inc. All rights reserved. | ||
| // See the file LICENSE for licensing terms. | ||
|
|
||
| package evm | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "math/big" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| "testing" | ||
| "unicode" | ||
|
|
||
| "github.com/ava-labs/coreth/core" | ||
| "github.com/ava-labs/coreth/core/rawdb" | ||
| "github.com/ava-labs/coreth/core/types" | ||
| "github.com/ava-labs/coreth/core/vm" | ||
| "github.com/ava-labs/coreth/eth/tracers" | ||
| "github.com/ava-labs/coreth/tests" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/common/math" | ||
| ) | ||
|
|
||
| func TestPrestateWithDiffModeANTTracer(t *testing.T) { | ||
| testPrestateDiffTracer("prestateTracer", "prestate_tracer_ant", t) | ||
| } | ||
|
|
||
| // testPrestateDiffTracer is adapted from the original testPrestateDiffTracer in | ||
| // eth/tracers/internal/tracetest/prestate_test.go. | ||
| func testPrestateDiffTracer(tracerName string, dirPath string, t *testing.T) { | ||
| files, err := os.ReadDir(filepath.Join("testdata", dirPath)) | ||
| if err != nil { | ||
| t.Fatalf("failed to retrieve tracer test suite: %v", err) | ||
| } | ||
| for _, file := range files { | ||
| if !strings.HasSuffix(file.Name(), ".json") { | ||
| continue | ||
| } | ||
| file := file // capture range variable | ||
| t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| var ( | ||
| test = new(testcase) | ||
| tx = new(types.Transaction) | ||
| ) | ||
| // Call tracer test found, read if from disk | ||
| if blob, err := os.ReadFile(filepath.Join("testdata", dirPath, file.Name())); err != nil { | ||
| t.Fatalf("failed to read testcase: %v", err) | ||
| } else if err := json.Unmarshal(blob, test); err != nil { | ||
| t.Fatalf("failed to parse testcase: %v", err) | ||
| } | ||
| if err := tx.UnmarshalBinary(common.FromHex(test.Input)); err != nil { | ||
| t.Fatalf("failed to parse testcase input: %v", err) | ||
| } | ||
| // Configure a blockchain with the given prestate | ||
| var ( | ||
| signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)), uint64(test.Context.Time)) | ||
| context = vm.BlockContext{ | ||
| CanTransfer: core.CanTransfer, | ||
| CanTransferMC: core.CanTransferMC, | ||
| Transfer: core.Transfer, | ||
| TransferMultiCoin: core.TransferMultiCoin, | ||
| Coinbase: test.Context.Miner, | ||
| BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), | ||
| Time: uint64(test.Context.Time), | ||
| Difficulty: (*big.Int)(test.Context.Difficulty), | ||
| GasLimit: uint64(test.Context.GasLimit), | ||
| BaseFee: test.Genesis.BaseFee, | ||
| } | ||
| state = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false, rawdb.HashScheme) | ||
| ) | ||
| defer state.Close() | ||
|
|
||
| tracer, err := tracers.DefaultDirectory.New(tracerName, new(tracers.Context), test.TracerConfig) | ||
| if err != nil { | ||
| t.Fatalf("failed to create call tracer: %v", err) | ||
| } | ||
| msg, err := core.TransactionToMessage(tx, signer, context.BaseFee) | ||
| if err != nil { | ||
| t.Fatalf("failed to prepare transaction for tracing: %v", err) | ||
| } | ||
| evm := vm.NewEVM(context, core.NewEVMTxContext(msg), state.StateDB, test.Genesis.Config, vm.Config{Tracer: tracer}) | ||
| st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) | ||
| if _, err = st.TransitionDb(); err != nil { | ||
| t.Fatalf("failed to execute transaction: %v", err) | ||
| } | ||
| // Retrieve the trace result and compare against the expected | ||
| res, err := tracer.GetResult() | ||
| if err != nil { | ||
| t.Fatalf("failed to retrieve trace result: %v", err) | ||
| } | ||
| want, err := json.Marshal(test.Result) | ||
| if err != nil { | ||
| t.Fatalf("failed to marshal test: %v", err) | ||
| } | ||
| if string(want) != string(res) { | ||
| t.Fatalf("trace mismatch\n have: %v\n want: %v\n", string(res), string(want)) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| // testcase defines a single test to check the stateDiff tracer against. | ||
| type testcase struct { | ||
| Genesis *core.Genesis `json:"genesis"` | ||
| Context *callContext `json:"context"` | ||
| Input string `json:"input"` | ||
| TracerConfig json.RawMessage `json:"tracerConfig"` | ||
| Result interface{} `json:"result"` | ||
| } | ||
|
|
||
| type callContext struct { | ||
| Number math.HexOrDecimal64 `json:"number"` | ||
| Difficulty *math.HexOrDecimal256 `json:"difficulty"` | ||
| Time math.HexOrDecimal64 `json:"timestamp"` | ||
| GasLimit math.HexOrDecimal64 `json:"gasLimit"` | ||
| Miner common.Address `json:"miner"` | ||
| } | ||
|
|
||
| // camel converts a snake cased input string into a camel cased output. | ||
| func camel(str string) string { | ||
| pieces := strings.Split(str, "_") | ||
| for i := 1; i < len(pieces); i++ { | ||
| pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] | ||
| } | ||
| return strings.Join(pieces, "") | ||
| } |
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