lotus/itests/fevm_events_test.go

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package itests
import (
"context"
"encoding/hex"
"fmt"
"os"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/lotus/chain/types/ethtypes"
"github.com/filecoin-project/lotus/itests/kit"
)
// TestFEVMEvents does a basic events smoke test.
func TestFEVMEvents(t *testing.T) {
require := require.New(t)
kit.QuietMiningLogs()
blockTime := 100 * time.Millisecond
client, _, ens := kit.EnsembleMinimal(t, kit.MockProofs(), kit.ThroughRPC())
ens.InterconnectAll().BeginMining(blockTime)
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
defer cancel()
// install contract
// See https://github.com/filecoin-project/builtin-actors/blob/next/actors/evm/tests/events.rs#L12
contractHex, err := os.ReadFile("contracts/events.bin")
require.NoError(err)
contract, err := hex.DecodeString(string(contractHex))
require.NoError(err)
fromAddr, err := client.WalletDefaultAddress(ctx)
require.NoError(err)
result := client.EVM().DeployContract(ctx, fromAddr, contract)
idAddr, err := address.NewIDAddress(result.ActorID)
require.NoError(err)
t.Logf("actor ID address is %s", idAddr)
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var (
earliest = "earliest"
latest = "latest"
)
// Install a filter.
filter, err := client.EthNewFilter(ctx, &ethtypes.EthFilterSpec{
FromBlock: &earliest,
ToBlock: &latest,
})
require.NoError(err)
// No logs yet.
res, err := client.EthGetFilterLogs(ctx, filter)
require.NoError(err)
require.Empty(res.Results)
// log a zero topic event with data
ret, err := client.EVM().InvokeSolidity(ctx, fromAddr, idAddr, []byte{0x00, 0x00, 0x00, 0x00}, nil)
require.NoError(err)
require.True(ret.Receipt.ExitCode.IsSuccess(), "contract execution failed")
require.NotNil(ret.Receipt.EventsRoot)
fmt.Println(ret)
fmt.Printf("Events:\n %+v\n", client.EVM().LoadEvents(ctx, *ret.Receipt.EventsRoot))
// log a zero topic event with no data
ret, err = client.EVM().InvokeSolidity(ctx, fromAddr, idAddr, []byte{0x00, 0x00, 0x00, 0x01}, nil)
require.NoError(err)
require.True(ret.Receipt.ExitCode.IsSuccess(), "contract execution failed")
fmt.Println(ret)
fmt.Printf("Events:\n %+v\n", client.EVM().LoadEvents(ctx, *ret.Receipt.EventsRoot))
// log a four topic event with data
ret, err = client.EVM().InvokeSolidity(ctx, fromAddr, idAddr, []byte{0x00, 0x00, 0x00, 0x02}, nil)
require.NoError(err)
require.True(ret.Receipt.ExitCode.IsSuccess(), "contract execution failed")
fmt.Println(ret)
fmt.Printf("Events:\n %+v\n", client.EVM().LoadEvents(ctx, *ret.Receipt.EventsRoot))
}