67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
package backends_test
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import (
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"context"
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"math/big"
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"testing"
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ethereum "github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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)
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func TestSimulatedBackend(t *testing.T) {
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var gasLimit uint64 = 8000029
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key, _ := crypto.GenerateKey() // nolint: gosec
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auth := bind.NewKeyedTransactor(key)
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genAlloc := make(core.GenesisAlloc)
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genAlloc[auth.From] = core.GenesisAccount{Balance: big.NewInt(9223372036854775807)}
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sim := backends.NewSimulatedBackend(genAlloc, gasLimit)
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// should return an error if the tx is not found
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txHash := common.HexToHash("2")
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_, isPending, err := sim.TransactionByHash(context.Background(), txHash)
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if isPending {
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t.Fatal("transaction should not be pending")
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}
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if err != ethereum.NotFound {
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t.Fatalf("err should be `ethereum.NotFound` but received %v", err)
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}
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// generate a transaction and confirm you can retrieve it
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code := `6060604052600a8060106000396000f360606040526008565b00`
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var gas uint64 = 3000000
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tx := types.NewContractCreation(0, big.NewInt(0), gas, big.NewInt(1), common.FromHex(code))
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tx, _ = types.SignTx(tx, types.HomesteadSigner{}, key)
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err = sim.SendTransaction(context.Background(), tx)
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if err != nil {
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t.Fatal("error sending transaction")
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}
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txHash = tx.Hash()
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_, isPending, err = sim.TransactionByHash(context.Background(), txHash)
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if err != nil {
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t.Fatalf("error getting transaction with hash: %v", txHash.String())
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}
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if !isPending {
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t.Fatal("transaction should have pending status")
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}
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sim.Commit()
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tx, isPending, err = sim.TransactionByHash(context.Background(), txHash)
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if err != nil {
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t.Fatalf("error getting transaction with hash: %v", txHash.String())
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}
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if isPending {
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t.Fatal("transaction should not have pending status")
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}
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}
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