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eth/tracers: fix and add testcase for #29800 #29811

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May 21, 2024
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eth/tracers: create testcase for #29800
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holiman committed May 21, 2024
commit 04f60ac7306375252576ff8aa0a9e32780699868
88 changes: 88 additions & 0 deletions eth/tracers/api_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/consensus/beacon"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
Expand Down Expand Up @@ -994,3 +995,90 @@ func TestTraceChain(t *testing.T) {
}
}
}

// newTestMergedBackend creates a post-merge chain
func newTestMergedBackend(t *testing.T, n int, gspec *core.Genesis, generator func(i int, b *core.BlockGen)) *testBackend {
backend := &testBackend{
chainConfig: gspec.Config,
engine: beacon.NewFaker(),
chaindb: rawdb.NewMemoryDatabase(),
}
// Generate blocks for testing
_, blocks, _ := core.GenerateChainWithGenesis(gspec, backend.engine, n, generator)

// Import the canonical chain
cacheConfig := &core.CacheConfig{
TrieCleanLimit: 256,
TrieDirtyLimit: 256,
TrieTimeLimit: 5 * time.Minute,
SnapshotLimit: 0,
TrieDirtyDisabled: true, // Archive mode
}
chain, err := core.NewBlockChain(backend.chaindb, cacheConfig, gspec, nil, backend.engine, vm.Config{}, nil, nil)
if err != nil {
t.Fatalf("failed to create tester chain: %v", err)
}
if n, err := chain.InsertChain(blocks); err != nil {
t.Fatalf("block %d: failed to insert into chain: %v", n, err)
}
backend.chain = chain
return backend
}

func TestTraceBlockWithBasefee(t *testing.T) {
t.Parallel()
accounts := newAccounts(1)
target := common.HexToAddress("0x1111111111111111111111111111111111111111")
genesis := &core.Genesis{
Config: params.AllDevChainProtocolChanges,
Alloc: types.GenesisAlloc{
accounts[0].addr: {Balance: big.NewInt(1 * params.Ether)},
target: {Nonce: 1, Code: []byte{
byte(vm.BASEFEE), byte(vm.STOP),
}},
},
}
genBlocks := 1
signer := types.HomesteadSigner{}
var txHash common.Hash
var baseFee = new(big.Int)
backend := newTestMergedBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) {
tx, _ := types.SignTx(types.NewTx(&types.LegacyTx{
Nonce: uint64(i),
To: &target,
Value: big.NewInt(0),
Gas: 5 * params.TxGas,
GasPrice: b.BaseFee(),
Data: nil}),
signer, accounts[0].key)
b.AddTx(tx)
txHash = tx.Hash()
baseFee.Set(b.BaseFee())
})
defer backend.chain.Stop()
api := NewAPI(backend)

var testSuite = []struct {
blockNumber rpc.BlockNumber
config *TraceConfig
want string
}{
// Trace head block
{
blockNumber: rpc.BlockNumber(genBlocks),
want: fmt.Sprintf(`[{"txHash":"%#x","result":{"gas":21002,"failed":false,"returnValue":"","structLogs":[{"pc":0,"op":"BASEFEE","gas":84000,"gasCost":2,"depth":1,"stack":[]},{"pc":1,"op":"STOP","gas":83998,"gasCost":0,"depth":1,"stack":["%#x"]}]}}]`, txHash, baseFee),
},
}
for i, tc := range testSuite {
result, err := api.TraceBlockByNumber(context.Background(), tc.blockNumber, tc.config)
if err != nil {
t.Errorf("test %d, want no error, have %v", i, err)
continue
}
have, _ := json.Marshal(result)
want := tc.want
if string(have) != want {
t.Errorf("test %d, result mismatch\nhave: %v\nwant: %v\n", i, string(have), want)
}
}
}
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