plugeth/accounts/abi/bind/base_test.go

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// Copyright 2019 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"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
)
type mockCaller struct {
codeAtBlockNumber *big.Int
callContractBlockNumber *big.Int
}
func (mc *mockCaller) CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) {
mc.codeAtBlockNumber = blockNumber
return []byte{1, 2, 3}, nil
}
func (mc *mockCaller) CallContract(ctx context.Context, call ethereum.CallMsg, blockNumber *big.Int) ([]byte, error) {
mc.callContractBlockNumber = blockNumber
return nil, nil
}
func TestPassingBlockNumber(t *testing.T) {
mc := &mockCaller{}
bc := bind.NewBoundContract(common.HexToAddress("0x0"), abi.ABI{
Methods: map[string]abi.Method{
"something": {
Name: "something",
Outputs: abi.Arguments{},
},
},
}, mc, nil, nil)
var ret string
blockNumber := big.NewInt(42)
bc.Call(&bind.CallOpts{BlockNumber: blockNumber}, &ret, "something")
if mc.callContractBlockNumber != blockNumber {
t.Fatalf("CallContract() was not passed the block number")
}
if mc.codeAtBlockNumber != blockNumber {
t.Fatalf("CodeAt() was not passed the block number")
}
bc.Call(&bind.CallOpts{}, &ret, "something")
if mc.callContractBlockNumber != nil {
t.Fatalf("CallContract() was passed a block number when it should not have been")
}
if mc.codeAtBlockNumber != nil {
t.Fatalf("CodeAt() was passed a block number when it should not have been")
}
}