github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/accounts/abi/bind/backends/simulated_test.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package backends_test
    19  
    20  import (
    21  	"context"
    22  	"math/big"
    23  	"testing"
    24  
    25  	ethereum "github.com/AigarNetwork/aigar"
    26  	"github.com/AigarNetwork/aigar/accounts/abi/bind"
    27  	"github.com/AigarNetwork/aigar/accounts/abi/bind/backends"
    28  	"github.com/AigarNetwork/aigar/common"
    29  	"github.com/AigarNetwork/aigar/core"
    30  	"github.com/AigarNetwork/aigar/core/types"
    31  	"github.com/AigarNetwork/aigar/crypto"
    32  )
    33  
    34  func TestSimulatedBackend(t *testing.T) {
    35  	var gasLimit uint64 = 8000029
    36  	key, _ := crypto.GenerateKey() // nolint: gosec
    37  	auth := bind.NewKeyedTransactor(key)
    38  	genAlloc := make(core.GenesisAlloc)
    39  	genAlloc[auth.From] = core.GenesisAccount{Balance: big.NewInt(9223372036854775807)}
    40  
    41  	sim := backends.NewSimulatedBackend(genAlloc, gasLimit)
    42  	defer sim.Close()
    43  
    44  	// should return an error if the tx is not found
    45  	txHash := common.HexToHash("2")
    46  	_, isPending, err := sim.TransactionByHash(context.Background(), txHash)
    47  
    48  	if isPending {
    49  		t.Fatal("transaction should not be pending")
    50  	}
    51  	if err != ethereum.NotFound {
    52  		t.Fatalf("err should be `ethereum.NotFound` but received %v", err)
    53  	}
    54  
    55  	// generate a transaction and confirm you can retrieve it
    56  	code := `6060604052600a8060106000396000f360606040526008565b00`
    57  	var gas uint64 = 3000000
    58  	tx := types.NewContractCreation(0, big.NewInt(0), gas, big.NewInt(1), common.FromHex(code))
    59  	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, key)
    60  
    61  	err = sim.SendTransaction(context.Background(), tx)
    62  	if err != nil {
    63  		t.Fatal("error sending transaction")
    64  	}
    65  
    66  	txHash = tx.Hash()
    67  	_, isPending, err = sim.TransactionByHash(context.Background(), txHash)
    68  	if err != nil {
    69  		t.Fatalf("error getting transaction with hash: %v", txHash.String())
    70  	}
    71  	if !isPending {
    72  		t.Fatal("transaction should have pending status")
    73  	}
    74  
    75  	sim.Commit()
    76  	tx, isPending, err = sim.TransactionByHash(context.Background(), txHash)
    77  	if err != nil {
    78  		t.Fatalf("error getting transaction with hash: %v", txHash.String())
    79  	}
    80  	if isPending {
    81  		t.Fatal("transaction should not have pending status")
    82  	}
    83  
    84  }