github.com/bcskill/bcschain/v3@v3.4.9-beta2/accounts/abi/bind/backends/simulated_test.go (about)

     1  // Copyright 2019 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package backends_test
    18  
    19  import (
    20  	"context"
    21  	"math/big"
    22  	"testing"
    23  
    24  	"github.com/bcskill/bcschain/v3"
    25  	"github.com/bcskill/bcschain/v3/accounts/abi/bind"
    26  	"github.com/bcskill/bcschain/v3/accounts/abi/bind/backends"
    27  	"github.com/bcskill/bcschain/v3/common"
    28  	"github.com/bcskill/bcschain/v3/core"
    29  	"github.com/bcskill/bcschain/v3/core/types"
    30  	"github.com/bcskill/bcschain/v3/crypto"
    31  )
    32  
    33  func TestSimulatedBackend(t *testing.T) {
    34  	key, _ := crypto.GenerateKey() // nolint: gosec
    35  	auth := bind.NewKeyedTransactor(key)
    36  	genAlloc := make(core.GenesisAlloc)
    37  	genAlloc[auth.From] = core.GenesisAccount{Balance: big.NewInt(9223372036854775807)}
    38  
    39  	sim := backends.NewSimulatedBackend(genAlloc)
    40  
    41  	// should return an error if the tx is not found
    42  	txHash := common.HexToHash("2")
    43  	_, isPending, err := sim.TransactionByHash(context.Background(), txHash)
    44  
    45  	if isPending {
    46  		t.Fatal("transaction should not be pending")
    47  	}
    48  	if err != gochain.NotFound {
    49  		t.Fatalf("err should be `gochain.NotFound` but received %v", err)
    50  	}
    51  
    52  	// generate a transaction and confirm you can retrieve it
    53  	code := `6060604052600a8060106000396000f360606040526008565b00`
    54  	var gas uint64 = 3000000
    55  	tx := types.NewContractCreation(0, big.NewInt(0), gas, big.NewInt(1), common.FromHex(code))
    56  	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, key)
    57  
    58  	err = sim.SendTransaction(context.Background(), tx)
    59  	if err != nil {
    60  		t.Fatal("error sending transaction")
    61  	}
    62  
    63  	txHash = tx.Hash()
    64  	_, isPending, err = sim.TransactionByHash(context.Background(), txHash)
    65  	if err != nil {
    66  		t.Fatalf("error getting transaction with hash: %v", txHash.String())
    67  	}
    68  	if !isPending {
    69  		t.Fatal("transaction should have pending status")
    70  	}
    71  
    72  	sim.Commit()
    73  	tx, isPending, err = sim.TransactionByHash(context.Background(), txHash)
    74  	if err != nil {
    75  		t.Fatalf("error getting transaction with hash: %v", txHash.String())
    76  	}
    77  	if isPending {
    78  		t.Fatal("transaction should not have pending status")
    79  	}
    80  
    81  }