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") } }