nested and paych suites in generator format (#235)

.circleci/config.yml

@@ -53,8 +53,17 @@ jobs:
           name: "build tvx"
           command: pushd tvx && go build .
       - run:
-          name: "run messages test vector suite"
+          name: "run messages test vector suite (deprecated api)"
           command: pushd tvx && ./tvx suite-messages | ./tvx exec-lotus
+      - run:
+          name: "run messages test vector suite (new api) - msg_application"
+          command: pushd tvx/scripts/msg_application && go build . && ./msg_application | ../../tvx exec-lotus
+      - run:
+          name: "run messages test vector suite (new api) - nested send"
+          command: pushd tvx/scripts/nested && go build . && ./nested | ../../tvx exec-lotus
+      - run:
+          name: "run messages test vector suite (new api) - paych"
+          command: pushd tvx/scripts/paych && go build . && ./paych | ../../tvx exec-lotus
   soup-build-linux:
     executor: linux
     steps:

tvx/scripts/nested/main.go

@@ -0,0 +1,127 @@
+package main
+
+import (
+	. "github.com/filecoin-project/oni/tvx/builders"
+	"github.com/filecoin-project/oni/tvx/schema"
+)
+
+func main() {
+	g := NewGenerator()
+
+	g.MessageVectorGroup("nested_sends",
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "ok-basic",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_OkBasic,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "ok-to-new-actor",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_OkToNewActor,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "ok-to-new-actor-with-invoke",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_OkToNewActorWithInvoke,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "ok-recursive",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_OkRecursive,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "ok-non-cbor-params-with-transfer",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_OKNonCBORParamsWithTransfer,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-non-existent-id-address",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailNonexistentIDAddress,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-non-existent-actor-address",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailNonexistentActorAddress,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-invalid-method-num-new-actor",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailInvalidMethodNumNewActor,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-invalid-method-num-for-actor",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailInvalidMethodNumForActor,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-missing-params",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailMissingParams,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-mismatch-params",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailMismatchParams,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-inner-abort",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailInnerAbort,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-aborted-exec",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailAbortedExec,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "fail-insufficient-funds-for-transfer-in-inner-send",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: nestedSends_FailInsufficientFundsForTransferInInnerSend,
+		},
+	)
+
+	g.Wait()
+}

tvx/scripts/nested/nested.go

@@ -2,8 +2,6 @@ package main
 
 import (
 	"bytes"
-	"os"
-	//"fmt"
 
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/lotus/chain/vm"
@@ -13,17 +11,14 @@ import (
 	init_ "github.com/filecoin-project/specs-actors/actors/builtin/init"
 	"github.com/filecoin-project/specs-actors/actors/builtin/multisig"
 	"github.com/filecoin-project/specs-actors/actors/builtin/paych"
-	"github.com/filecoin-project/specs-actors/actors/runtime"
-	typegen "github.com/whyrusleeping/cbor-gen"
-	//"github.com/filecoin-project/specs-actors/actors/crypto"
 	"github.com/filecoin-project/specs-actors/actors/builtin/reward"
 	"github.com/filecoin-project/specs-actors/actors/puppet"
+	"github.com/filecoin-project/specs-actors/actors/runtime"
 	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
 	"github.com/filecoin-project/specs-actors/actors/util/adt"
+	typegen "github.com/whyrusleeping/cbor-gen"
 
 	. "github.com/filecoin-project/oni/tvx/builders"
-	"github.com/filecoin-project/oni/tvx/schema"
-	//"github.com/davecgh/go-spew/spew"
 )
 
 var (
@@ -42,63 +37,7 @@ func init() {
 	}
 }
 
-func main() {
+func nestedSends_OkBasic(v *Builder) {
-	nestedSends_OkBasic()
-	nestedSends_OkToNewActor()
-	nestedSends_OkToNewActorWithInvoke()
-	nestedSends_OkRecursive()
-	nestedSends_OKNonCBORParamsWithTransfer()
-
-	// TODO: Tests to exercise invalid "syntax" of the inner message.
-	// These would fail message syntax validation if the message were top-level.
-	//
-	// Some of these require handcrafting the proposal params serialization.
-	// - malformed address: zero-length, one-length, too-short pubkeys, invalid UVarints, ...
-	// - negative method num
-	//
-	// Unfortunately the multisig actor can't be used to trigger a negative-value internal transfer because
-	// it checks just before sending.
-	// We need a custom actor for staging whackier messages.
-
-	//
-	// The following tests exercise invalid semantics of the inner message
-	//
-
-	nestedSends_FailNonexistentIDAddress()
-	nestedSends_FailNonexistentActorAddress()
-	nestedSends_FailInvalidMethodNumNewActor()
-	nestedSends_FailInvalidMethodNumForActor()
-
-	// The multisig actor checks before attempting to transfer more than its balance, so we can't exercise that
-	// the VM also checks this. Need a custome actor to exercise this.
-	//t.Run("fail insufficient funds", func(t *testing.T) {
-	//	td := builder.Build(t)
-	//	defer td.Complete()
-	//
-	//	stage := prepareStage(td, acctDefaultBalance, multisigBalance)
-	//	balanceBefore := td.GetBalance(stage.creator)
-	//
-	//	// Attempt to transfer from the multisig more than the balance it has.
-	//	// The proposal to do should succeed, but the inner message fail.
-	//	amtSent := big.Add(multisigBalance, abi.NewTokenAmount(1))
-	//	result := stage.send(stage.creator, amtSent, builtin.MethodSend, nil, nonce)
-	//	assert.Equal(t, exitcode_spec.Ok, result.Receipt.ExitCode)
-	//
-	//	td.AssertBalance(stage.msAddr, multisigBalance)                                       // No change.
-	//	td.AssertBalance(stage.creator, big.Sub(balanceBefore, result.Receipt.GasUsed.Big())) // Pay gas, don't receive funds.
-	//})
-
-	nestedSends_FailMissingParams()
-	nestedSends_FailMismatchParams()
-	nestedSends_FailInnerAbort()
-	nestedSends_FailAbortedExec()
-	nestedSends_FailInsufficientFundsForTransferInInnerSend()
-}
-
-func nestedSends_OkBasic() {
-	metadata := &schema.Metadata{ID: "nested-sends-ok-basic", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -111,14 +50,9 @@ func nestedSends_OkBasic() {
 	//td.AssertActor(stage.creator, big.Sub(big.Add(balanceBefore, amtSent), result.Receipt.GasUsed.Big()), nonce+1)
 	v.Assert.NonceEq(stage.creator, nonce+1)
 	v.Assert.BalanceEq(stage.creator, big.Sub(big.Add(balanceBefore, amtSent), big.NewInt(result.MessageReceipt.GasUsed)))
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_OkToNewActor() {
+func nestedSends_OkToNewActor(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-ok-to-new-actor", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -132,14 +66,9 @@ func nestedSends_OkToNewActor() {
 	v.Assert.BalanceEq(stage.msAddr, big.Sub(multisigBalance, amtSent))
 	v.Assert.BalanceEq(stage.creator, big.Sub(balanceBefore, big.NewInt(result.MessageReceipt.GasUsed)))
 	v.Assert.BalanceEq(newAddr, amtSent)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_OkToNewActorWithInvoke() {
+func nestedSends_OkToNewActorWithInvoke(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-ok-to-new-actor-with-invoke", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -159,14 +88,9 @@ func nestedSends_OkToNewActorWithInvoke() {
 	v.Assert.BalanceEq(stage.msAddr, big.Sub(multisigBalance, amtSent))
 	v.Assert.BalanceEq(stage.creator, big.Sub(balanceBefore, big.NewInt(result.MessageReceipt.GasUsed)))
 	v.Assert.BalanceEq(newAddr, amtSent)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_OkRecursive() {
+func nestedSends_OkRecursive(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-ok-recursive", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	another := v.Actors.Account(address.SECP256K1, big.Zero())
@@ -186,14 +110,9 @@ func nestedSends_OkRecursive() {
 	var st multisig.State
 	v.Actors.ActorState(stage.msAddr, &st)
 	v.Assert.Equal([]address.Address{stage.creator, another.ID}, st.Signers)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_OKNonCBORParamsWithTransfer() {
+func nestedSends_OKNonCBORParamsWithTransfer(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-ok-non-cbor-params-with-transfer", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -206,14 +125,9 @@ func nestedSends_OKNonCBORParamsWithTransfer() {
 
 	v.Assert.BalanceEq(stage.msAddr, big.Sub(multisigBalance, amtSent))
 	v.Assert.BalanceEq(newAddr, amtSent)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailNonexistentIDAddress() {
+func nestedSends_FailNonexistentIDAddress(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-nonexistent-id-address", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -224,14 +138,9 @@ func nestedSends_FailNonexistentIDAddress() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.ActorMissing(newAddr)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailNonexistentActorAddress() {
+func nestedSends_FailNonexistentActorAddress(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-nonexistent-actor-address", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -242,14 +151,9 @@ func nestedSends_FailNonexistentActorAddress() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.ActorMissing(newAddr)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailInvalidMethodNumNewActor() {
+func nestedSends_FailInvalidMethodNumNewActor(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-invalid-methodnum-new-actor", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -260,14 +164,9 @@ func nestedSends_FailInvalidMethodNumNewActor() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.ActorMissing(newAddr)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailInvalidMethodNumForActor() {
+func nestedSends_FailInvalidMethodNumForActor(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-invalid-methodnum-for-actor", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -278,14 +177,9 @@ func nestedSends_FailInvalidMethodNumForActor() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance)                                                    // No change.
 	v.Assert.BalanceEq(stage.creator, big.Sub(balanceBefore, big.NewInt(result.MessageReceipt.GasUsed))) // Pay gas, don't receive funds.
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailMissingParams() {
+func nestedSends_FailMissingParams(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-missing-params", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -298,14 +192,9 @@ func nestedSends_FailMissingParams() {
 	v.Assert.BalanceEq(stage.creator, big.Sub(balanceBefore, big.NewInt(result.MessageReceipt.GasUsed)))
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.Equal(1, len(stage.state().Signers))     // No new signers
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailMismatchParams() {
+func nestedSends_FailMismatchParams(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-mismatched-params", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -324,14 +213,9 @@ func nestedSends_FailMismatchParams() {
 	v.Assert.BalanceEq(stage.creator, big.Sub(balanceBefore, big.NewInt(result.MessageReceipt.GasUsed)))
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.Equal(1, len(stage.state().Signers))     // No new signers
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailInnerAbort() {
+func nestedSends_FailInnerAbort(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-inner-abort", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -348,14 +232,9 @@ func nestedSends_FailInnerAbort() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.HeadEq(builtin.RewardActorAddr, prevHead)
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailAbortedExec() {
+func nestedSends_FailAbortedExec(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-aborted-exec", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	stage := prepareStage(v, acctDefaultBalance, multisigBalance)
@@ -376,14 +255,9 @@ func nestedSends_FailAbortedExec() {
 
 	v.Assert.BalanceEq(stage.msAddr, multisigBalance) // No change.
 	v.Assert.HeadEq(builtin.InitActorAddr, prevHead)  // Init state unchanged.
-
-	v.Finish(os.Stdout)
 }
 
-func nestedSends_FailInsufficientFundsForTransferInInnerSend() {
+func nestedSends_FailInsufficientFundsForTransferInInnerSend(v *Builder) {
-	metadata := &schema.Metadata{ID: "nested-sends-fail-insufficient-funds-for-transfer-in-inner-send", Version: "v1", Desc: ""}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	// puppet actor has zero funds
@@ -421,8 +295,6 @@ func nestedSends_FailInsufficientFundsForTransferInInnerSend() {
 	// alice should be charged for the gas cost and bob should have not received any funds.
 	v.Assert.BalanceEq(alice.ID, big.Sub(acctDefaultBalance, big.NewInt(msg.Result.GasUsed)))
 	v.Assert.BalanceEq(bob.ID, big.Zero())
-
-	v.Finish(os.Stdout)
 }
 
 type msStage struct {

tvx/scripts/paych/main.go

@@ -1,6 +1,10 @@
 package main
 
-import "github.com/filecoin-project/specs-actors/actors/abi"
+import (
+	. "github.com/filecoin-project/oni/tvx/builders"
+	"github.com/filecoin-project/oni/tvx/schema"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+)
 
 var (
 	initialBal = abi.NewTokenAmount(200_000_000_000)
@@ -8,7 +12,34 @@ var (
 )
 
 func main() {
-	happyPathCreate()
+	g := NewGenerator()
-	happyPathUpdate()
+
-	happyPathCollect()
+	g.MessageVectorGroup("paych",
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "create-ok",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: happyPathCreate,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "update-ok",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: happyPathUpdate,
+		},
+		&MessageVectorGenItem{
+			Metadata: &schema.Metadata{
+				ID:      "collect-ok",
+				Version: "v1",
+				Desc:    "",
+			},
+			Func: happyPathCollect,
+		},
+	)
+
+	g.Wait()
 }

tvx/scripts/paych/ok.go

@@ -1,8 +1,6 @@
 package main
 
 import (
-	"os"
-
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/filecoin-project/specs-actors/actors/abi/big"
@@ -12,13 +10,9 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
 
 	. "github.com/filecoin-project/oni/tvx/builders"
-	"github.com/filecoin-project/oni/tvx/schema"
 )
 
-func happyPathCreate() {
+func happyPathCreate(v *Builder) {
-	metadata := &schema.Metadata{ID: "paych-create-ok", Version: "v1", Desc: "payment channel create"}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	// Set up sender and receiver accounts.
@@ -47,12 +41,10 @@ func happyPathCreate() {
 	v.Assert.Equal(sender.ID, state.From)
 	v.Assert.Equal(receiver.ID, state.To)
 	v.Assert.Equal(toSend, actor.Balance)
-
-	v.Finish(os.Stdout)
 }
 
-func happyPathUpdate() {
+func happyPathUpdate(v *Builder) {
-	metadata := &schema.Metadata{ID: "paych-update-ok", Version: "v1", Desc: "payment channel update"}
+	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	var (
 		timelock = abi.ChainEpoch(0)
@@ -65,9 +57,6 @@ func happyPathUpdate() {
 	var sender, receiver AddressHandle
 	var paychAddr AddressHandle
 
-	v := MessageVector(metadata)
-	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
-
 	v.Actors.AccountN(address.SECP256K1, initialBal, &sender, &receiver)
 	paychAddr = AddressHandle{
 		ID:     MustNewIDAddr(MustIDFromAddress(receiver.ID) + 1),
@@ -112,14 +101,9 @@ func happyPathUpdate() {
 	v.Assert.Equal(amount, ls.Redeemed)
 	v.Assert.Equal(nonce, ls.Nonce)
 	v.Assert.Equal(lane, ls.ID)
-
-	v.Finish(os.Stdout)
 }
 
-func happyPathCollect() {
+func happyPathCollect(v *Builder) {
-	metadata := &schema.Metadata{ID: "paych-collect-ok", Version: "v1", Desc: "payment channel collect"}
-
-	v := MessageVector(metadata)
 	v.Messages.SetDefaults(GasLimit(1_000_000_000), GasPrice(1))
 
 	// Set up sender and receiver accounts.
@@ -169,6 +153,4 @@ func happyPathCollect() {
 	// the paych actor should have been deleted after the collect
 	v.Assert.ActorMissing(paychAddr.Robust)
 	v.Assert.ActorMissing(paychAddr.ID)
-
-	v.Finish(os.Stdout)
 }