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ethclient: move test

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This commit is contained in:
Felix Lange 2024-10-24 14:07:36 +02:00
parent 49b29c0fa6
commit c0be9ce9aa
2 changed files with 35 additions and 40 deletions
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35
ethclient/ethclient_test.go
View file

@ -27,6 +27,7 @@ import (
"time"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
@ -772,3 +773,37 @@ func sendTransaction(ec *Client) error {
}
return ec.SendTransaction(context.Background(), tx)
}
// Here we show how to get the error message of reverted contract call.
func ExampleRevertErrorData() {
// First create an ethclient.Client instance.
ctx := context.Background()
ec, _ := DialContext(ctx, exampleNode.HTTPEndpoint())
// Call the contract.
// Note we expect the call to return an error.
contract := common.HexToAddress("290f1b36649a61e369c6276f6d29463335b4400c")
call := ethereum.CallMsg{To: &contract, Gas: 30000}
result, err := ec.CallContract(ctx, call, nil)
if len(result) > 0 {
panic("got result")
}
if err == nil {
panic("call did not return error")
}
// Extract the low-level revert data from the error.
revertData, ok := RevertErrorData(err)
if !ok {
panic("unpacking revert failed")
}
fmt.Printf("revert: %x\n", revertData)
// Parse the revert data to obtain the error message.
message, err := abi.UnpackRevert(revertData)
fmt.Println("message:", message)
// Output:
// revert: 08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000a75736572206572726f72
// message: user error
}

40
ethclient/example_test.go
View file

@ -17,12 +17,6 @@
package ethclient
import (
"context"
"fmt"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/node"
)
@ -39,37 +33,3 @@ func init() {
}
exampleNode = n
}
// Here we show how to get the error message of reverted contract call.
func ExampleRevertErrorData() {
// First create an ethclient.Client instance.
ctx := context.Background()
ec, _ := DialContext(ctx, exampleNode.HTTPEndpoint())
// Call the contract.
// Note we expect the call to return an error.
contract := common.HexToAddress("290f1b36649a61e369c6276f6d29463335b4400c")
call := ethereum.CallMsg{To: &contract, Gas: 30000}
result, err := ec.CallContract(ctx, call, nil)
if len(result) > 0 {
panic("got result")
}
if err == nil {
panic("call did not return error")
}
// Extract the low-level revert data from the error.
revertData, ok := RevertErrorData(err)
if !ok {
panic("unpacking revert failed")
}
fmt.Printf("revert: %x\n", revertData)
// Parse the revert data to obtain the error message.
message, err := abi.UnpackRevert(revertData)
fmt.Println("message:", message)
// Output:
// revert: 08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000a75736572206572726f72
// message: user error
}