path: root/accounts/abi/bind/util_test.go

// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package bind_test

import (
    "context"
    "math/big"
    "testing"
    "time"

    "github.com/ethereum/go-ethereum/accounts/abi/bind"
    "github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/crypto"
)

var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")

var waitDeployedTests = map[string]struct {
    code        string
    gas         *big.Int
    wantAddress common.Address
    wantErr     error
}{
    "successful deploy": {
        code:        `6060604052600a8060106000396000f360606040526008565b00`,
        gas:         big.NewInt(3000000),
        wantAddress: common.HexToAddress("0x3a220f351252089d385b29beca14e27f204c296a"),
    },
    "empty code": {
        code:        ``,
        gas:         big.NewInt(300000),
        wantErr:     bind.ErrNoCodeAfterDeploy,
        wantAddress: common.HexToAddress("0x3a220f351252089d385b29beca14e27f204c296a"),
    },
}

func TestWaitDeployed(t *testing.T) {
    for name, test := range waitDeployedTests {
        backend := backends.NewSimulatedBackend(core.GenesisAlloc{
            crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000)},
        })

        // Create the transaction.
        tx := types.NewContractCreation(0, big.NewInt(0), test.gas, big.NewInt(1), common.FromHex(test.code))
        tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)

        // Wait for it to get mined in the background.
        var (
            err     error
            address common.Address
            mined   = make(chan struct{})
            ctx     = context.Background()
        )
        go func() {
            address, err = bind.WaitDeployed(ctx, backend, tx)
            close(mined)
        }()

        // Send and mine the transaction.
        backend.SendTransaction(ctx, tx)
        backend.Commit()

        select {
        case <-mined:
            if err != test.wantErr {
                t.Errorf("test %q: error mismatch: got %q, want %q", name, err, test.wantErr)
            }
            if address != test.wantAddress {
                t.Errorf("test %q: unexpected contract address %s", name, address.Hex())
            }
        case <-time.After(2 * time.Second):
            t.Errorf("test %q: timeout", name)
        }
    }
}