package itests import ( "bytes" "context" "crypto/rand" "encoding/binary" "encoding/hex" "fmt" "testing" "time" "github.com/stretchr/testify/require" "github.com/filecoin-project/go-address" "github.com/filecoin-project/go-state-types/big" builtintypes "github.com/filecoin-project/go-state-types/builtin" "github.com/filecoin-project/go-state-types/exitcode" "github.com/filecoin-project/go-state-types/manifest" "github.com/filecoin-project/lotus/api" "github.com/filecoin-project/lotus/build" "github.com/filecoin-project/lotus/chain/types" "github.com/filecoin-project/lotus/chain/types/ethtypes" "github.com/filecoin-project/lotus/itests/kit" ) // convert a simple byte array into input data which is a left padded 32 byte array func inputDataFromArray(input []byte) []byte { inputData := make([]byte, 32) copy(inputData[32-len(input):], input[:]) return inputData } // convert a "from" address into input data which is a left padded 32 byte array func inputDataFromFrom(ctx context.Context, t *testing.T, client *kit.TestFullNode, from address.Address) []byte { fromId, err := client.StateLookupID(ctx, from, types.EmptyTSK) require.NoError(t, err) senderEthAddr, err := ethtypes.EthAddressFromFilecoinAddress(fromId) require.NoError(t, err) inputData := make([]byte, 32) copy(inputData[32-len(senderEthAddr):], senderEthAddr[:]) return inputData } func decodeOutputToUint64(output []byte) (uint64, error) { var result uint64 buf := bytes.NewReader(output[len(output)-8:]) err := binary.Read(buf, binary.BigEndian, &result) return result, err } func buildInputFromuint64(number uint64) []byte { // Convert the number to a binary uint64 array binaryNumber := make([]byte, 8) binary.BigEndian.PutUint64(binaryNumber, number) return inputDataFromArray(binaryNumber) } // recursive delegate calls that fail due to gas limits are currently getting to 229 iterations // before running out of gas func recursiveDelegatecallFail(ctx context.Context, t *testing.T, client *kit.TestFullNode, filename string, count uint64) { expectedIterationsBeforeFailing := int(220) fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) t.Log("recursion count - ", count) inputData := buildInputFromuint64(count) _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursiveCall(uint256)", inputData) require.NoError(t, err) result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "totalCalls()", []byte{}) require.NoError(t, err) resultUint, err := decodeOutputToUint64(result) require.NoError(t, err) require.NotEqual(t, int(resultUint), int(count)) require.Equal(t, expectedIterationsBeforeFailing, int(resultUint)) } func recursiveDelegatecallSuccess(ctx context.Context, t *testing.T, client *kit.TestFullNode, filename string, count uint64) { t.Log("Count - ", count) fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) inputData := buildInputFromuint64(count) _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursiveCall(uint256)", inputData) require.NoError(t, err) result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "totalCalls()", []byte{}) require.NoError(t, err) resultUint, err := decodeOutputToUint64(result) require.NoError(t, err) require.Equal(t, int(count), int(resultUint)) } // TestFEVMRecursive does a basic fevm contract installation and invocation func TestFEVMRecursive(t *testing.T) { callCounts := []uint64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 100, 230, 330} ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() filename := "contracts/Recursive.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) // Successful calls for _, callCount := range callCounts { callCount := callCount // linter unhappy unless callCount is local to loop t.Run(fmt.Sprintf("TestFEVMRecursive%d", callCount), func(t *testing.T) { _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursiveCall(uint256)", buildInputFromuint64(callCount)) require.NoError(t, err) }) } } func TestFEVMRecursiveFail(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() filename := "contracts/Recursive.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) // Unsuccessful calls failCallCounts := []uint64{340, 400, 600, 850, 1000} for _, failCallCount := range failCallCounts { failCallCount := failCallCount // linter unhappy unless callCount is local to loop t.Run(fmt.Sprintf("TestFEVMRecursiveFail%d", failCallCount), func(t *testing.T) { _, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursiveCall(uint256)", buildInputFromuint64(failCallCount)) require.Error(t, err) require.Equal(t, exitcode.ExitCode(37), wait.Receipt.ExitCode) }) } } func TestFEVMRecursive1(t *testing.T) { callCount := 1 ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() filename := "contracts/Recursive.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) _, ret, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursive1()", []byte{}) require.NoError(t, err) events := client.EVM().LoadEvents(ctx, *ret.Receipt.EventsRoot) require.Equal(t, callCount, len(events)) } func TestFEVMRecursive2(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() filename := "contracts/Recursive.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) _, ret, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "recursive2()", []byte{}) require.NoError(t, err) events := client.EVM().LoadEvents(ctx, *ret.Receipt.EventsRoot) require.Equal(t, 2, len(events)) } // TestFEVMRecursiveDelegatecallCount tests the maximum delegatecall recursion depth. func TestFEVMRecursiveDelegatecallCount(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() highestSuccessCount := uint64(226) filename := "contracts/RecursiveDelegeatecall.hex" recursiveDelegatecallSuccess(ctx, t, client, filename, uint64(1)) recursiveDelegatecallSuccess(ctx, t, client, filename, uint64(2)) recursiveDelegatecallSuccess(ctx, t, client, filename, uint64(10)) recursiveDelegatecallSuccess(ctx, t, client, filename, uint64(100)) recursiveDelegatecallSuccess(ctx, t, client, filename, highestSuccessCount) recursiveDelegatecallFail(ctx, t, client, filename, highestSuccessCount+1) recursiveDelegatecallFail(ctx, t, client, filename, uint64(1000)) recursiveDelegatecallFail(ctx, t, client, filename, uint64(10000000)) } // TestFEVMBasic does a basic fevm contract installation and invocation func TestFEVMBasic(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() filename := "contracts/SimpleCoin.hex" // install contract fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) // invoke the contract with owner { inputData := inputDataFromFrom(ctx, t, client, fromAddr) result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "getBalance(address)", inputData) require.NoError(t, err) expectedResult, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000002710") require.NoError(t, err) require.Equal(t, result, expectedResult) } // invoke the contract with non owner { inputData := inputDataFromFrom(ctx, t, client, fromAddr) inputData[31]++ // change the pub address to one that has 0 balance by modifying the last byte of the address result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "getBalance(address)", inputData) require.NoError(t, err) expectedResult, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000000") require.NoError(t, err) require.Equal(t, result, expectedResult) } } // TestFEVMETH0 tests that the ETH0 actor is in genesis func TestFEVMETH0(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() eth0id, err := address.NewIDAddress(1001) require.NoError(t, err) client.AssertActorType(ctx, eth0id, manifest.EthAccountKey) act, err := client.StateGetActor(ctx, eth0id, types.EmptyTSK) require.NoError(t, err) eth0Addr, err := address.NewDelegatedAddress(builtintypes.EthereumAddressManagerActorID, make([]byte, 20)) require.NoError(t, err) require.Equal(t, *act.Address, eth0Addr) } // TestFEVMDelegateCall deploys two contracts and makes a delegate call transaction func TestFEVMDelegateCall(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/DelegatecallActor.hex" fromAddr, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //install contract Storage filenameStorage := "contracts/DelegatecallStorage.hex" fromAddrStorage, storageAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) require.Equal(t, fromAddr, fromAddrStorage) //call Contract Storage which makes a delegatecall to contract Actor //this contract call sets the "counter" variable to 7, from default value 0 inputDataContract := inputDataFromFrom(ctx, t, client, actorAddr) inputDataValue := inputDataFromArray([]byte{7}) inputData := append(inputDataContract, inputDataValue...) //verify that the returned value of the call to setvars is 7 result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, storageAddr, "setVars(address,uint256)", inputData) require.NoError(t, err) expectedResult, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000007") require.NoError(t, err) require.Equal(t, result, expectedResult) //test the value is 7 a second way by calling the getter result, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, storageAddr, "getCounter()", []byte{}) require.NoError(t, err) require.Equal(t, result, expectedResult) //test the value is 0 via calling the getter on the Actor contract result, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, actorAddr, "getCounter()", []byte{}) require.NoError(t, err) expectedResultActor, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000000") require.NoError(t, err) require.Equal(t, result, expectedResultActor) // The implementation's storage should not have been updated. actorAddrEth, err := ethtypes.EthAddressFromFilecoinAddress(actorAddr) require.NoError(t, err) value, err := client.EVM().EthGetStorageAt(ctx, actorAddrEth, nil, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest")) require.NoError(t, err) require.Equal(t, ethtypes.EthBytes(make([]byte, 32)), value) // The storage actor's storage _should_ have been updated storageAddrEth, err := ethtypes.EthAddressFromFilecoinAddress(storageAddr) require.NoError(t, err) value, err = client.EVM().EthGetStorageAt(ctx, storageAddrEth, nil, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest")) require.NoError(t, err) require.Equal(t, ethtypes.EthBytes(expectedResult), value) } // TestFEVMDelegateCallRevert makes a delegatecall action and then calls revert. // the state should not have changed because of the revert func TestFEVMDelegateCallRevert(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/DelegatecallActor.hex" fromAddr, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //install contract Storage filenameStorage := "contracts/DelegatecallStorage.hex" fromAddrStorage, storageAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) require.Equal(t, fromAddr, fromAddrStorage) //call Contract Storage which makes a delegatecall to contract Actor //this contract call sets the "counter" variable to 7, from default value 0 inputDataContract := inputDataFromFrom(ctx, t, client, actorAddr) inputDataValue := inputDataFromArray([]byte{7}) inputData := append(inputDataContract, inputDataValue...) //verify that the returned value of the call to setvars is 7 _, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, storageAddr, "setVarsRevert(address,uint256)", inputData) require.Error(t, err) require.Equal(t, exitcode.ExitCode(33), wait.Receipt.ExitCode) //test the value is 0 via calling the getter and was not set to 7 expectedResult, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000000") require.NoError(t, err) result, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, storageAddr, "getCounter()", []byte{}) require.NoError(t, err) require.Equal(t, result, expectedResult) //test the value is 0 via calling the getter on the Actor contract result, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, actorAddr, "getCounter()", []byte{}) require.NoError(t, err) require.Equal(t, result, expectedResult) } // TestFEVMSimpleRevert makes a call that is a simple revert func TestFEVMSimpleRevert(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameStorage := "contracts/DelegatecallStorage.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //call revert _, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "revert()", []byte{}) require.Equal(t, wait.Receipt.ExitCode, exitcode.ExitCode(33)) require.Error(t, err) } // TestFEVMSelfDestruct creates a contract that just has a self destruct feature and calls it func TestFEVMSelfDestruct(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameStorage := "contracts/SelfDestruct.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //call destroy _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "destroy()", []byte{}) require.NoError(t, err) //call destroy a second time and also no error _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "destroy()", []byte{}) require.NoError(t, err) } // TestFEVMTestApp deploys a fairly complex app contract and confirms it works as expected func TestFEVMTestApp(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameStorage := "contracts/TestApp.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) inputData, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000700000000000000000000000000000000000000000000000000000000000000066162636465660000000000000000000000000000000000000000000000000000") // sending string "abcdef" and int 7 - constructed using remix require.NoError(t, err) _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "new_Test(string,uint256)", inputData) require.NoError(t, err) inputData, err = hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000000") require.NoError(t, err) _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "get_Test_N(uint256)", inputData) require.NoError(t, err) } // TestFEVMTestApp creates a contract that just has a self destruct feature and calls it func TestFEVMTestConstructor(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameStorage := "contracts/Constructor.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //input = uint256{7}. set value and confirm tx success inputData, err := hex.DecodeString("0000000000000000000000000000000000000000000000000000000000000007") require.NoError(t, err) _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "new_Test(uint256)", inputData) require.NoError(t, err) } // TestFEVMAutoSelfDestruct creates a contract that just has a self destruct feature and calls it func TestFEVMAutoSelfDestruct(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameStorage := "contracts/AutoSelfDestruct.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //call destroy _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "destroy()", []byte{}) require.NoError(t, err) } // TestFEVMTestApp creates a contract that just has a self destruct feature and calls it func TestFEVMTestSendToContract(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() bal, err := client.WalletBalance(ctx, client.DefaultKey.Address) require.NoError(t, err) //install contract TestApp filenameStorage := "contracts/SelfDestruct.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //transfer half balance to contract sendAmount := big.Div(bal, big.NewInt(2)) client.EVM().TransferValueOrFail(ctx, fromAddr, contractAddr, sendAmount) //call self destruct which should return balance _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "destroy()", []byte{}) require.NoError(t, err) finalBalanceMinimum := types.FromFil(uint64(99_999_999)) // 100 million FIL - 1 FIL for gas upper bounds finalBal, err := client.WalletBalance(ctx, client.DefaultKey.Address) require.NoError(t, err) require.Equal(t, true, finalBal.GreaterThan(finalBalanceMinimum)) } // creates a contract that would fail when tx are sent to it // on eth but on fevm it succeeds // example failing on testnet https://goerli.etherscan.io/address/0x2ff1525e060169dbf97b9461758c8f701f107cd2 func TestFEVMTestNotPayable(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() fromAddr := client.DefaultKey.Address t.Log("from - ", fromAddr) //create contract A filenameStorage := "contracts/NotPayable.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) sendAmount := big.NewInt(10_000_000) client.EVM().TransferValueOrFail(ctx, fromAddr, contractAddr, sendAmount) } // tx to non function succeeds func TestFEVMSendCall(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/GasSendTest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "x()", []byte{}) require.NoError(t, err) } // creates a contract that would fail when tx are sent to it // on eth but on fevm it succeeds // example on goerli of tx failing https://goerli.etherscan.io/address/0xec037bdc9a79420985a53a49fdae3ccf8989909b func TestFEVMSendGasLimit(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/GasLimitSend.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //send $ to contract //transfer 1 attoFIL to contract sendAmount := big.MustFromString("1") client.EVM().TransferValueOrFail(ctx, fromAddr, contractAddr, sendAmount) _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getDataLength()", []byte{}) require.NoError(t, err) } // TestFEVMDelegateCall deploys the two contracts in TestFEVMDelegateCall but instead of A calling B, A calls A which should cause A to cause A in an infinite loop and should give a reasonable error func TestFEVMDelegateCallRecursiveFail(t *testing.T) { //TODO change the gas limit of this invocation and confirm that the number of errors is // different ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/DelegatecallStorage.hex" fromAddr, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //any data will do for this test that fails inputDataContract := inputDataFromFrom(ctx, t, client, actorAddr) inputDataValue := inputDataFromArray([]byte{7}) inputData := append(inputDataContract, inputDataValue...) //verify that we run out of gas then revert. _, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, actorAddr, "setVarsSelf(address,uint256)", inputData) require.Error(t, err) require.Equal(t, exitcode.ExitCode(33), wait.Receipt.ExitCode) //assert no fatal errors but still there are errors:: errorAny := "fatal error" require.NotContains(t, err.Error(), errorAny) } // TestFEVMTestSendValueThroughContracts creates A and B contract and exchanges value // and self destructs and accounts for value sent func TestFEVMTestSendValueThroughContractsAndDestroy(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() fromAddr := client.DefaultKey.Address t.Log("from - ", fromAddr) //create contract A filenameStorage := "contracts/ValueSender.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //create contract B ret, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "createB()", []byte{}) require.NoError(t, err) ethAddr, err := ethtypes.CastEthAddress(ret[12:]) require.NoError(t, err) contractBAddress, err := ethAddr.ToFilecoinAddress() require.NoError(t, err) t.Log("contractBAddress - ", contractBAddress) //self destruct contract B _, _, err = client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractBAddress, "selfDestruct()", []byte{}) require.NoError(t, err) } func TestEVMRpcDisable(t *testing.T) { client, _, _ := kit.EnsembleMinimal(t, kit.MockProofs(), kit.ThroughRPC(), kit.DisableEthRPC()) _, err := client.EthBlockNumber(context.Background()) require.ErrorContains(t, err, "module disabled, enable with Fevm.EnableEthRPC") } // TestFEVMRecursiveFuncCall deploys a contract and makes a recursive function calls func TestFEVMRecursiveFuncCall(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/StackFunc.hex" fromAddr, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) testN := func(n int, ex exitcode.ExitCode) func(t *testing.T) { return func(t *testing.T) { inputData := make([]byte, 32) binary.BigEndian.PutUint64(inputData[24:], uint64(n)) client.EVM().InvokeContractByFuncNameExpectExit(ctx, fromAddr, actorAddr, "exec1(uint256)", inputData, ex) } } t.Run("n=0", testN(0, exitcode.Ok)) t.Run("n=1", testN(1, exitcode.Ok)) t.Run("n=20", testN(20, exitcode.Ok)) t.Run("n=200", testN(200, exitcode.Ok)) t.Run("n=507", testN(507, exitcode.Ok)) t.Run("n=508", testN(508, exitcode.ExitCode(37))) // 37 means stack overflow } // TestFEVMRecursiveActorCall deploys a contract and makes a recursive actor calls func TestFEVMRecursiveActorCall(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/RecCall.hex" fromAddr, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) testN := func(n, r int, ex exitcode.ExitCode) func(t *testing.T) { return func(t *testing.T) { inputData := make([]byte, 32*3) binary.BigEndian.PutUint64(inputData[24:], uint64(n)) binary.BigEndian.PutUint64(inputData[32+24:], uint64(n)) binary.BigEndian.PutUint64(inputData[32+32+24:], uint64(r)) client.EVM().InvokeContractByFuncNameExpectExit(ctx, fromAddr, actorAddr, "exec1(uint256,uint256,uint256)", inputData, ex) } } t.Run("n=0,r=1", testN(0, 1, exitcode.Ok)) t.Run("n=1,r=1", testN(1, 1, exitcode.Ok)) t.Run("n=20,r=1", testN(20, 1, exitcode.Ok)) t.Run("n=200,r=1", testN(200, 1, exitcode.Ok)) t.Run("n=251,r=1", testN(251, 1, exitcode.Ok)) t.Run("n=252,r=1-fails", testN(252, 1, exitcode.ExitCode(37))) // 37 means stack overflow t.Run("n=0,r=10", testN(0, 10, exitcode.Ok)) t.Run("n=1,r=10", testN(1, 10, exitcode.Ok)) t.Run("n=20,r=10", testN(20, 10, exitcode.Ok)) t.Run("n=200,r=10", testN(200, 10, exitcode.Ok)) t.Run("n=251,r=10", testN(251, 10, exitcode.Ok)) t.Run("n=252,r=10-fails", testN(252, 10, exitcode.ExitCode(37))) t.Run("n=0,r=32", testN(0, 32, exitcode.Ok)) t.Run("n=1,r=32", testN(1, 32, exitcode.Ok)) t.Run("n=20,r=32", testN(20, 32, exitcode.Ok)) t.Run("n=200,r=32", testN(200, 32, exitcode.Ok)) t.Run("n=251,r=32", testN(251, 32, exitcode.Ok)) t.Run("n=0,r=252", testN(0, 252, exitcode.Ok)) t.Run("n=251,r=166", testN(251, 166, exitcode.Ok)) t.Run("n=0,r=253-fails", testN(0, 254, exitcode.ExitCode(33))) // 33 means transaction reverted t.Run("n=251,r=167-fails", testN(251, 167, exitcode.ExitCode(33))) } // TestFEVMRecursiveActorCallEstimate func TestFEVMRecursiveActorCallEstimate(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract Actor filenameActor := "contracts/ExternalRecursiveCallSimple.hex" _, actorAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) contractAddr, err := ethtypes.EthAddressFromFilecoinAddress(actorAddr) require.NoError(t, err) // create a new Ethereum account key, ethAddr, ethFilAddr := client.EVM().NewAccount() kit.SendFunds(ctx, t, client, ethFilAddr, types.FromFil(1000)) makeParams := func(r int) []byte { funcSignature := "exec1(uint256)" entryPoint := kit.CalcFuncSignature(funcSignature) inputData := make([]byte, 32) binary.BigEndian.PutUint64(inputData[24:], uint64(r)) params := append(entryPoint, inputData...) return params } testN := func(r int) func(t *testing.T) { return func(t *testing.T) { t.Logf("running with %d recursive calls", r) params := makeParams(r) gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{ From: ðAddr, To: &contractAddr, Data: params, }) require.NoError(t, err) require.LessOrEqual(t, int64(gaslimit), build.BlockGasLimit) t.Logf("EthEstimateGas GasLimit=%d", gaslimit) maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx) require.NoError(t, err) nonce, err := client.MpoolGetNonce(ctx, ethFilAddr) require.NoError(t, err) tx := ðtypes.EthTxArgs{ ChainID: build.Eip155ChainId, To: &contractAddr, Value: big.Zero(), Nonce: int(nonce), MaxFeePerGas: types.NanoFil, MaxPriorityFeePerGas: big.Int(maxPriorityFeePerGas), GasLimit: int(gaslimit), Input: params, V: big.Zero(), R: big.Zero(), S: big.Zero(), } client.EVM().SignTransaction(tx, key.PrivateKey) hash := client.EVM().SubmitTransaction(ctx, tx) smsg, err := tx.ToSignedMessage() require.NoError(t, err) _, err = client.StateWaitMsg(ctx, smsg.Cid(), 0, 0, false) require.NoError(t, err) receipt, err := client.EthGetTransactionReceipt(ctx, hash) require.NoError(t, err) require.NotNil(t, receipt) t.Logf("Receipt GasUsed=%d", receipt.GasUsed) t.Logf("Ratio %0.2f", float64(receipt.GasUsed)/float64(gaslimit)) t.Logf("Overestimate %0.2f", ((float64(gaslimit)/float64(receipt.GasUsed))-1)*100) require.EqualValues(t, ethtypes.EthUint64(1), receipt.Status) } } t.Run("n=1", testN(1)) t.Run("n=2", testN(2)) t.Run("n=3", testN(3)) t.Run("n=4", testN(4)) t.Run("n=5", testN(5)) t.Run("n=10", testN(10)) t.Run("n=20", testN(20)) t.Run("n=30", testN(30)) t.Run("n=40", testN(40)) t.Run("n=50", testN(50)) t.Run("n=100", testN(100)) } // TestFEVM deploys a contract while sending value to it func TestFEVMDeployWithValue(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //testValue is the amount sent when the contract is created //at the end we check that the new contract has a balance of testValue testValue := big.NewInt(20) // deploy DeployValueTest which creates NewContract // testValue is sent to DeployValueTest and that amount is // also sent to NewContract filenameActor := "contracts/DeployValueTest.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilenameWithValue(ctx, filenameActor, testValue) //call getNewContractBalance to find the value of NewContract ret, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "getNewContractBalance()", []byte{}) require.NoError(t, err) contractBalance, err := decodeOutputToUint64(ret) require.NoError(t, err) //require balance of NewContract is testValue require.Equal(t, testValue.Uint64(), contractBalance) } func TestFEVMDestroyCreate2(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //deploy create2 factory contract filename := "contracts/Create2Factory.hex" fromAddr, idAddr := client.EVM().DeployContractFromFilename(ctx, filename) //construct salt for create2 salt := make([]byte, 32) _, err := rand.Read(salt) require.NoError(t, err) //deploy contract using create2 factory selfDestructAddress, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "deploy(bytes32)", salt) require.NoError(t, err) //convert to filecoin actor address so we can call InvokeContractByFuncName ea, err := ethtypes.CastEthAddress(selfDestructAddress[12:]) require.NoError(t, err) selfDestructAddressActor, err := ea.ToFilecoinAddress() require.NoError(t, err) //read sender property from contract ret, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{}) require.NoError(t, err) //assert contract has correct data ethFromAddr := inputDataFromFrom(ctx, t, client, fromAddr) require.Equal(t, ethFromAddr, ret) //run test() which 1.calls sefldestruct 2. verifies sender() is the correct value 3. attempts and fails to deploy via create2 testSenderAddress, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "test(address)", selfDestructAddress) require.NoError(t, err) require.Equal(t, testSenderAddress, ethFromAddr) //read sender() but get response of 0x0 because of self destruct senderAfterDestroy, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{}) require.NoError(t, err) require.Equal(t, []byte{}, senderAfterDestroy) // deploy new contract at same address usign same salt newAddressSelfDestruct, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, idAddr, "deploy(bytes32)", salt) require.NoError(t, err) require.Equal(t, newAddressSelfDestruct, selfDestructAddress) //verify sender() property is correct senderSecondCall, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, selfDestructAddressActor, "sender()", []byte{}) require.NoError(t, err) //assert contract has correct data require.Equal(t, ethFromAddr, senderSecondCall) } func TestFEVMBareTransferTriggersSmartContractLogic(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() // This contract emits an event on receiving value. filename := "contracts/ValueSender.hex" _, contractAddr := client.EVM().DeployContractFromFilename(ctx, filename) accctKey, accntEth, accntFil := client.EVM().NewAccount() kit.SendFunds(ctx, t, client, accntFil, types.FromFil(10)) contractEth, err := ethtypes.EthAddressFromFilecoinAddress(contractAddr) require.NoError(t, err) gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{ From: &accntEth, To: &contractEth, Value: ethtypes.EthBigInt(big.NewInt(100)), }) require.NoError(t, err) maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx) require.NoError(t, err) tx := ethtypes.EthTxArgs{ ChainID: build.Eip155ChainId, Value: big.NewInt(100), Nonce: 0, To: &contractEth, MaxFeePerGas: types.NanoFil, MaxPriorityFeePerGas: big.Int(maxPriorityFeePerGas), GasLimit: int(gaslimit), V: big.Zero(), R: big.Zero(), S: big.Zero(), } client.EVM().SignTransaction(&tx, accctKey.PrivateKey) hash := client.EVM().SubmitTransaction(ctx, &tx) var receipt *api.EthTxReceipt for i := 0; i < 1000; i++ { receipt, err = client.EthGetTransactionReceipt(ctx, hash) require.NoError(t, err) if receipt != nil { break } time.Sleep(500 * time.Millisecond) } // The receive() function emits one log, that's how we know we hit it. require.Len(t, receipt.Logs, 1) } // This test ensures that we can deploy new contracts from a solidity call to `transfer` without // exceeding the 10M gas limit. func TestFEVMTestDeployOnTransfer(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() fromAddr := client.DefaultKey.Address t.Log("from - ", fromAddr) //create contract A filenameStorage := "contracts/ValueSender.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameStorage) //send to some random address. params := [32]byte{} params[30] = 0xff randomAddr, err := ethtypes.CastEthAddress(params[12:]) value := big.NewInt(100) entryPoint := kit.CalcFuncSignature("sendEthToB(address)") require.NoError(t, err) ret, err := client.EVM().InvokeSolidityWithValue(ctx, fromAddr, contractAddr, entryPoint, params[:], value) require.NoError(t, err) require.True(t, ret.Receipt.ExitCode.IsSuccess()) balance, err := client.EVM().EthGetBalance(ctx, randomAddr, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest")) require.NoError(t, err) require.Equal(t, value.Int, balance.Int) filAddr, err := randomAddr.ToFilecoinAddress() require.NoError(t, err) client.AssertActorType(ctx, filAddr, manifest.PlaceholderKey) } func TestFEVMProxyUpgradeable(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install transparently upgradeable proxy proxyFilename := "contracts/TransparentUpgradeableProxy.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, proxyFilename) _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "test()", []byte{}) require.NoError(t, err) } func TestFEVMGetBlockDifficulty(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/GetDifficulty.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) ret, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getDifficulty()", []byte{}) require.NoError(t, err) require.Equal(t, len(ret), 32) } func TestFEVMTestCorrectChainID(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/Blocktest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //run test _, _, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "testChainID()", []byte{}) require.NoError(t, err) } func TestFEVMGetChainPropertiesBlockTimestamp(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/Blocktest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) // block number check ret, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getTimestamp()", []byte{}) require.NoError(t, err) timestampFromSolidity, err := decodeOutputToUint64(ret) require.NoError(t, err) ethBlock := client.EVM().GetEthBlockFromWait(ctx, wait) require.Equal(t, ethBlock.Timestamp, ethtypes.EthUint64(timestampFromSolidity)) } func TestFEVMGetChainPropertiesBlockNumber(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/Blocktest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) // block number check ret, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getBlockNumber()", []byte{}) require.NoError(t, err) blockHeightFromSolidity, err := decodeOutputToUint64(ret) require.NoError(t, err) ethBlock := client.EVM().GetEthBlockFromWait(ctx, wait) require.Equal(t, ethBlock.Number, ethtypes.EthUint64(blockHeightFromSolidity)) } func TestFEVMGetChainPropertiesBlockHash(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/Blocktest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) //block hash check ret, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getBlockhashPrevious()", []byte{}) expectedBlockHash := hex.EncodeToString(ret) require.NoError(t, err) ethBlock := client.EVM().GetEthBlockFromWait(ctx, wait) //in solidity we get the parent block hash because the current block hash doesnt exist at that execution context yet //so we compare the parent hash here in the test require.Equal(t, "0x"+expectedBlockHash, ethBlock.ParentHash.String()) } func TestFEVMGetChainPropertiesBaseFee(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() //install contract filenameActor := "contracts/Blocktest.hex" fromAddr, contractAddr := client.EVM().DeployContractFromFilename(ctx, filenameActor) ret, wait, err := client.EVM().InvokeContractByFuncName(ctx, fromAddr, contractAddr, "getBasefee()", []byte{}) require.NoError(t, err) baseFeeRet, err := decodeOutputToUint64(ret) require.NoError(t, err) ethBlock := client.EVM().GetEthBlockFromWait(ctx, wait) require.Equal(t, ethBlock.BaseFeePerGas, ethtypes.EthBigInt(big.NewInt(int64(baseFeeRet)))) } func TestFEVMErrorParsing(t *testing.T) { ctx, cancel, client := kit.SetupFEVMTest(t) defer cancel() e := client.EVM() _, contractAddr := e.DeployContractFromFilename(ctx, "contracts/Errors.hex") contractAddrEth, err := ethtypes.EthAddressFromFilecoinAddress(contractAddr) require.NoError(t, err) customError := ethtypes.EthBytes(kit.CalcFuncSignature("CustomError()")).String() for sig, expected := range map[string]string{ "failRevertEmpty()": "none", "failRevertReason()": "Error(my reason)", "failAssert()": "Assert()", "failDivZero()": "DivideByZero()", "failCustom()": customError, } { sig := sig expected := fmt.Sprintf("exit 33, revert reason: %s, vm error", expected) t.Run(sig, func(t *testing.T) { entryPoint := kit.CalcFuncSignature(sig) t.Run("EthCall", func(t *testing.T) { _, err := e.EthCall(ctx, ethtypes.EthCall{ To: &contractAddrEth, Data: entryPoint, }, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest")) require.ErrorContains(t, err, expected) }) t.Run("EthEstimateGas", func(t *testing.T) { _, err := e.EthEstimateGas(ctx, ethtypes.EthCall{ To: &contractAddrEth, Data: entryPoint, }) require.ErrorContains(t, err, expected) }) }) } }