package compiler_test import ( "errors" "fmt" "math/big" "strconv" "strings" "testing" "github.com/nspcc-dev/neo-go/internal/fakechain" "github.com/nspcc-dev/neo-go/pkg/compiler" "github.com/nspcc-dev/neo-go/pkg/config" "github.com/nspcc-dev/neo-go/pkg/core" "github.com/nspcc-dev/neo-go/pkg/core/dao" "github.com/nspcc-dev/neo-go/pkg/core/interop" "github.com/nspcc-dev/neo-go/pkg/core/native" "github.com/nspcc-dev/neo-go/pkg/core/native/nativenames" "github.com/nspcc-dev/neo-go/pkg/core/state" "github.com/nspcc-dev/neo-go/pkg/core/storage" "github.com/nspcc-dev/neo-go/pkg/crypto/hash" "github.com/nspcc-dev/neo-go/pkg/encoding/address" "github.com/nspcc-dev/neo-go/pkg/encoding/base58" cinterop "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/neotest" "github.com/nspcc-dev/neo-go/pkg/neotest/chain" "github.com/nspcc-dev/neo-go/pkg/smartcontract" "github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag" "github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest" "github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neo-go/pkg/vm" "github.com/nspcc-dev/neo-go/pkg/vm/opcode" "github.com/nspcc-dev/neo-go/pkg/vm/stackitem" "github.com/stretchr/testify/require" "go.uber.org/zap/zaptest" ) func TestTypeConstantSize(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop" var a %T // type declaration is always ok func Main() any { return %#v }` t.Run("Hash160", func(t *testing.T) { t.Run("good", func(t *testing.T) { a := make(cinterop.Hash160, smartcontract.Hash160Len) src := fmt.Sprintf(src, a, a) eval(t, src, []byte(a)) }) t.Run("bad", func(t *testing.T) { a := make(cinterop.Hash160, 19) src := fmt.Sprintf(src, a, a) _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) }) t.Run("Hash256", func(t *testing.T) { t.Run("good", func(t *testing.T) { a := make(cinterop.Hash256, smartcontract.Hash256Len) src := fmt.Sprintf(src, a, a) eval(t, src, []byte(a)) }) t.Run("bad", func(t *testing.T) { a := make(cinterop.Hash256, 31) src := fmt.Sprintf(src, a, a) _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) }) } func TestAddressToHash160BuiltinConversion(t *testing.T) { a := "NQRLhCpAru9BjGsMwk67vdMwmzKMRgsnnN" h, err := address.StringToUint160(a) require.NoError(t, err) a2 := "NPAsqZkx9WhNd4P72uhZxBhLinSuNkxfB8" addr2, err := address.StringToUint160(a2) require.NoError(t, err) t.Run("builtin conversion", func(t *testing.T) { src := `package foo import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/lib/address" ) var addr = address.ToHash160("` + a + `") func Main() interop.Hash160 { return addr }` prog := eval(t, src, h.BytesBE()) // Address BE bytes expected to be present at program, which indicates that address conversion // was performed at compile-time. require.True(t, strings.Contains(string(prog), string(h.BytesBE()))) // On the contrary, there should be no address string. require.False(t, strings.Contains(string(prog), a)) }) t.Run("generate code", func(t *testing.T) { src := `package foo import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/lib/address" ) var addr = "` + a + `" func Main() interop.Hash160 { return address.ToHash160(addr) }` // Error on CALLT (std.Base58CheckDecode - method of StdLib native contract) is expected, which means // that address.ToHash160 code was honestly generated by the compiler without any optimisations. prog := evalWithError(t, src, "(CALLT): runtime error: invalid memory address or nil pointer dereference") // Address BE bytes expected not to be present at program, which indicates that address conversion // was not performed at compile-time. require.False(t, strings.Contains(string(prog), string(h.BytesBE()))) // On the contrary, there should be an address string. require.True(t, strings.Contains(string(prog), a)) }) t.Run("AliasPackage", func(t *testing.T) { src := ` package foo import ad "github.com/nspcc-dev/neo-go/pkg/interop/lib/address" func Main() []byte { addr1 := ad.ToHash160("` + a + `") addr2 := ad.ToHash160("` + a2 + `") sum := append(addr1, addr2...) return sum }` eval(t, src, append(h.BytesBE(), addr2.BytesBE()...)) }) } func TestInvokeAddressToFromHash160(t *testing.T) { a := "NQRLhCpAru9BjGsMwk67vdMwmzKMRgsnnN" h, err := address.StringToUint160(a) require.NoError(t, err) bc, acc := chain.NewSingle(t) e := neotest.NewExecutor(t, bc, acc, acc) src := `package foo import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/lib/address" ) const addr = "` + a + `" func ToHash160(a string) interop.Hash160 { return address.ToHash160(a) } func ToHash160AtCompileTime() interop.Hash160 { return address.ToHash160(addr) } func FromHash160(hash interop.Hash160) string { return address.FromHash160(hash) }` ctr := neotest.CompileSource(t, e.CommitteeHash, strings.NewReader(src), &compiler.Options{Name: "Helper"}) e.DeployContract(t, ctr, nil) c := e.CommitteeInvoker(ctr.Hash) t.Run("ToHash160", func(t *testing.T) { t.Run("invalid address length", func(t *testing.T) { c.InvokeFail(t, "invalid address length", "toHash160", base58.CheckEncode(make([]byte, util.Uint160Size+1+1))) }) t.Run("invalid prefix", func(t *testing.T) { c.InvokeFail(t, "invalid address prefix", "toHash160", base58.CheckEncode(append([]byte{address.NEO2Prefix}, h.BytesBE()...))) }) t.Run("good", func(t *testing.T) { c.Invoke(t, stackitem.NewBuffer(h.BytesBE()), "toHash160", a) }) }) t.Run("ToHash160Constant", func(t *testing.T) { t.Run("good", func(t *testing.T) { c.Invoke(t, stackitem.NewBuffer(h.BytesBE()), "toHash160AtCompileTime") }) }) t.Run("FromHash160", func(t *testing.T) { t.Run("good", func(t *testing.T) { c.Invoke(t, stackitem.NewByteArray([]byte(a)), "fromHash160", h.BytesBE()) }) t.Run("invalid length", func(t *testing.T) { c.InvokeFail(t, "invalid Hash160 length", "fromHash160", h.BytesBE()[:15]) }) }) } func TestAbort(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/util" func Main() int { util.Abort() return 1 }` v := vmAndCompile(t, src) require.Error(t, v.Run()) require.True(t, v.HasFailed()) } func TestAbortMsg(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/util" func Main() int { util.AbortMsg("some message") return 1 }` v := vmAndCompile(t, src) err := v.Run() require.Error(t, err) require.True(t, v.HasFailed()) require.True(t, strings.Contains(err.Error(), "ABORTMSG is executed. Reason: some message"), err) } func TestAssert(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/util" func Main(ok bool) int { util.Assert(ok) return 1 }` // assert OK evalWithArgs(t, src, nil, []stackitem.Item{stackitem.Make(true)}, big.NewInt(1)) // assert FALSE v := vmAndCompile(t, src) v.Estack().PushVal(false) err := v.Run() require.Error(t, err) require.True(t, v.HasFailed()) require.True(t, strings.Contains(err.Error(), "ASSERT"), err) } func TestAssertMsg(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/util" func Main(ok bool) int { util.AssertMsg(ok, "some message") return 1 }` // assert OK evalWithArgs(t, src, nil, []stackitem.Item{stackitem.Make(true)}, big.NewInt(1)) // assert FALSE v := vmAndCompile(t, src) v.Estack().PushVal(false) err := v.Run() require.Error(t, err) require.True(t, v.HasFailed()) require.True(t, strings.Contains(err.Error(), "ASSERTMSG is executed with false result. Reason: some message"), err) } func spawnVM(t *testing.T, ic *interop.Context, src string) *vm.VM { b, di, err := compiler.CompileWithOptions("foo.go", strings.NewReader(src), nil) require.NoError(t, err) v := core.SpawnVM(ic) invokeMethod(t, testMainIdent, b.Script, v, di) v.LoadScriptWithFlags(b.Script, callflag.All) return v } func TestAppCall(t *testing.T) { srcDeep := `package foo func Get42() int { return 42 }` barCtr, di, err := compiler.CompileWithOptions("bar.go", strings.NewReader(srcDeep), nil) require.NoError(t, err) mBar, err := di.ConvertToManifest(&compiler.Options{Name: "Bar"}) require.NoError(t, err) barH := hash.Hash160(barCtr.Script) srcInner := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" import "github.com/nspcc-dev/neo-go/pkg/interop" var a int = 3 func Main(a []byte, b []byte) []byte { panic("Main was called") } func Append(a []byte, b []byte) []byte { return append(a, b...) } func Add3(n int) int { return a + n } func CallInner() int { return contract.Call(%s, "get42", contract.All).(int) }` srcInner = fmt.Sprintf(srcInner, fmt.Sprintf("%#v", cinterop.Hash160(barH.BytesBE()))) inner, di, err := compiler.CompileWithOptions("foo.go", strings.NewReader(srcInner), nil) require.NoError(t, err) m, err := di.ConvertToManifest(&compiler.Options{ Name: "Foo", Permissions: []manifest.Permission{ *manifest.NewPermission(manifest.PermissionWildcard), }, }) require.NoError(t, err) ih := hash.Hash160(inner.Script) var contractGetter = func(_ *dao.Simple, h util.Uint160) (*state.Contract, error) { if h.Equals(ih) { return &state.Contract{ ContractBase: state.ContractBase{ Hash: ih, NEF: *inner, Manifest: *m, }, }, nil } else if h.Equals(barH) { return &state.Contract{ ContractBase: state.ContractBase{ Hash: barH, NEF: *barCtr, Manifest: *mBar, }, }, nil } return nil, errors.New("not found") } fc := fakechain.NewFakeChain() ic := interop.NewContext(trigger.Application, fc, dao.NewSimple(storage.NewMemoryStore(), false), interop.DefaultBaseExecFee, native.DefaultStoragePrice, contractGetter, nil, nil, nil, nil, zaptest.NewLogger(t)) t.Run("valid script", func(t *testing.T) { src := getAppCallScript(fmt.Sprintf("%#v", ih.BytesBE())) v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, []byte{1, 2, 3, 4}) }) t.Run("callEx, valid", func(t *testing.T) { src := getCallExScript(fmt.Sprintf("%#v", ih.BytesBE()), "contract.ReadStates|contract.AllowCall") v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, big.NewInt(42)) }) t.Run("callEx, missing flags", func(t *testing.T) { src := getCallExScript(fmt.Sprintf("%#v", ih.BytesBE()), "contract.NoneFlag") v := spawnVM(t, ic, src) require.Error(t, v.Run()) }) t.Run("missing script", func(t *testing.T) { h := ih h[0] = ^h[0] src := getAppCallScript(fmt.Sprintf("%#v", h.BytesBE())) v := spawnVM(t, ic, src) require.Error(t, v.Run()) }) t.Run("convert from string constant", func(t *testing.T) { src := ` package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" const scriptHash = ` + fmt.Sprintf("%#v", string(ih.BytesBE())) + ` func Main() []byte { x := []byte{1, 2} y := []byte{3, 4} result := contract.Call([]byte(scriptHash), "append", contract.All, x, y) return result.([]byte) } ` v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, []byte{1, 2, 3, 4}) }) t.Run("convert from var", func(t *testing.T) { src := ` package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" func Main() []byte { x := []byte{1, 2} y := []byte{3, 4} var addr = []byte(` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `) result := contract.Call(addr, "append", contract.All, x, y) return result.([]byte) } ` v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, []byte{1, 2, 3, 4}) }) t.Run("InitializedGlobals", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" func Main() int { var addr = []byte(` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `) result := contract.Call(addr, "add3", contract.All, 39) return result.(int) }` v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, big.NewInt(42)) }) t.Run("AliasPackage", func(t *testing.T) { src := `package foo import ee "github.com/nspcc-dev/neo-go/pkg/interop/contract" func Main() int { var addr = []byte(` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `) result := ee.Call(addr, "add3", ee.All, 39) return result.(int) }` v := spawnVM(t, ic, src) require.NoError(t, v.Run()) assertResult(t, v, big.NewInt(42)) }) } func getAppCallScript(h string) string { return ` package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" func Main() []byte { x := []byte{1, 2} y := []byte{3, 4} result := contract.Call(` + h + `, "append", contract.All, x, y) return result.([]byte) } ` } func getCallExScript(h string, flags string) string { return `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/contract" func Main() int { result := contract.Call(` + h + `, "callInner", ` + flags + `) return result.(int) }` } func TestBuiltinDoesNotCompile(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/util" func Main() bool { a := 1 b := 2 return util.Equals(a, b) }` v := vmAndCompile(t, src) ctx := v.Context() retCount := 0 for op, _, err := ctx.Next(); err == nil; op, _, err = ctx.Next() { if ctx.IP() >= len(ctx.Program()) { break } if op == opcode.RET { retCount++ } } require.Equal(t, 1, retCount) } func TestInteropPackage(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/block" func Main() int { b := block.Block{} a := block.GetTransactionCount(b) return a }` eval(t, src, big.NewInt(42)) } func TestBuiltinPackage(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/util" func Main() int { if util.Equals(1, 2) { // always returns true return 1 } return 2 }` eval(t, src, big.NewInt(1)) } func TestLenForNil(t *testing.T) { src := ` package foo func Main() bool { var a []int = nil return len(a) == 0 }` eval(t, src, true) } func TestCallTConversionErrors(t *testing.T) { t.Run("variable hash", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func Main() int { var hash string return neogointernal.CallWithToken(hash, "method", 0).(int) }` _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) t.Run("bad hash", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func Main() int { return neogointernal.CallWithToken("badstring", "method", 0).(int) }` _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) t.Run("variable method", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func Main() int { var method string return neogointernal.CallWithToken("\xf5\x63\xea\x40\xbc\x28\x3d\x4d\x0e\x05\xc4\x8e\xa3\x05\xb3\xf2\xa0\x73\x40\xef", method, 0).(int) }` _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) t.Run("variable flags", func(t *testing.T) { src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal" func Main() { var flags int neogointernal.CallWithTokenNoRet("\xf5\x63\xea\x40\xbc\x28\x3d\x4d\x0e\x05\xc4\x8e\xa3\x05\xb3\xf2\xa0\x73\x40\xef", "method", flags) }` _, err := compiler.Compile("foo.go", strings.NewReader(src)) require.Error(t, err) }) } func TestCallWithVersion(t *testing.T) { bc, acc := chain.NewSingle(t) e := neotest.NewExecutor(t, bc, acc, acc) src := `package foo import ( "github.com/nspcc-dev/neo-go/pkg/interop" "github.com/nspcc-dev/neo-go/pkg/interop/contract" util "github.com/nspcc-dev/neo-go/pkg/interop/lib/contract" ) func CallWithVersion(hash interop.Hash160, version int, method string) any { return util.CallWithVersion(hash, version, method, contract.All) }` ctr := neotest.CompileSource(t, e.CommitteeHash, strings.NewReader(src), &compiler.Options{Name: "Helper"}) e.DeployContract(t, ctr, nil) c := e.CommitteeInvoker(ctr.Hash) policyH := state.CreateNativeContractHash(nativenames.Policy) t.Run("good", func(t *testing.T) { c.Invoke(t, e.Chain.GetBaseExecFee(), "callWithVersion", policyH.BytesBE(), 0, "getExecFeeFactor") }) t.Run("unknown contract", func(t *testing.T) { c.InvokeFail(t, "unknown contract", "callWithVersion", util.Uint160{1, 2, 3}.BytesBE(), 0, "getExecFeeFactor") }) t.Run("invalid version", func(t *testing.T) { c.InvokeFail(t, "contract version mismatch", "callWithVersion", policyH.BytesBE(), 1, "getExecFeeFactor") }) } func TestForcedNotifyArgumentsConversion(t *testing.T) { const methodWithEllipsis = "withEllipsis" const methodWithoutEllipsis = "withoutEllipsis" check := func(t *testing.T, method string, targetSCParamTypes []smartcontract.ParamType, expectedVMParamTypes []stackitem.Type, noEventsCheck bool) { bc, acc := chain.NewSingleWithCustomConfig(t, func(blockchain *config.Blockchain) { blockchain.Hardforks = map[string]uint32{config.HFBasilisk.String(): 100500} // Disable runtime notifications check to reuse the same contract for different event parameter types. }) e := neotest.NewExecutor(t, bc, acc, acc) src := `package foo import "github.com/nspcc-dev/neo-go/pkg/interop/runtime" const arg4 = 4 // Const value. func WithoutEllipsis() { var arg0 int // Default value. var arg1 int = 1 // Initialized value. arg2 := 2 // Short decl. var arg3 int arg3 = 3 // Declare first, change value afterwards. runtime.Notify("withoutEllipsis", arg0, arg1, arg2, arg3, arg4, 5, f(6)) // The fifth argument is basic literal. } func WithEllipsis() { arg := []any{0, 1, f(2), 3, 4, 5, 6} runtime.Notify("withEllipsis", arg...) } func f(i int) int { return i }` count := len(targetSCParamTypes) if count != len(expectedVMParamTypes) { t.Fatalf("parameters count mismatch: %d vs %d", count, len(expectedVMParamTypes)) } scParams := make([]compiler.HybridParameter, len(targetSCParamTypes)) vmParams := make([]stackitem.Item, len(expectedVMParamTypes)) for i := range scParams { scParams[i] = compiler.HybridParameter{Parameter: manifest.Parameter{ Name: strconv.Itoa(i), Type: targetSCParamTypes[i], }} defaultValue := stackitem.NewBigInteger(big.NewInt(int64(i))) var ( val stackitem.Item err error ) if expectedVMParamTypes[i] == stackitem.IntegerT { val = defaultValue } else { val, err = defaultValue.Convert(expectedVMParamTypes[i]) // exactly the same conversion should be emitted by compiler and performed by the contract code. require.NoError(t, err) } vmParams[i] = val } ctr := neotest.CompileSource(t, e.CommitteeHash, strings.NewReader(src), &compiler.Options{ Name: "Helper", ContractEvents: []compiler.HybridEvent{ { Name: methodWithoutEllipsis, Parameters: scParams, }, { Name: methodWithEllipsis, Parameters: scParams, }, }, NoEventsCheck: noEventsCheck, }) e.DeployContract(t, ctr, nil) c := e.CommitteeInvoker(ctr.Hash) t.Run(method, func(t *testing.T) { h := c.Invoke(t, stackitem.Null{}, method) aer := c.GetTxExecResult(t, h) require.Equal(t, 1, len(aer.Events)) require.Equal(t, stackitem.NewArray(vmParams), aer.Events[0].Item) }) } checkSingleType := func(t *testing.T, method string, targetSCEventType smartcontract.ParamType, expectedVMType stackitem.Type, noEventsCheck ...bool) { count := 7 scParams := make([]smartcontract.ParamType, count) vmParams := make([]stackitem.Type, count) for i := range scParams { scParams[i] = targetSCEventType vmParams[i] = expectedVMType } var noEvents bool if len(noEventsCheck) > 0 { noEvents = noEventsCheck[0] } check(t, method, scParams, vmParams, noEvents) } t.Run("good, single type, default values", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.IntegerType, stackitem.IntegerT) }) t.Run("good, single type, conversion to BooleanT", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.BoolType, stackitem.BooleanT) }) t.Run("good, single type, Hash160Type->ByteArray", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.Hash160Type, stackitem.ByteArrayT) }) t.Run("good, single type, Hash256Type->ByteArray", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.Hash256Type, stackitem.ByteArrayT) }) t.Run("good, single type, Signature->ByteArray", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.SignatureType, stackitem.ByteArrayT) }) t.Run("good, single type, String->ByteArray", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.StringType, stackitem.ByteArrayT) // Special case, runtime.Notify will convert any Buffer to ByteArray. }) t.Run("good, single type, PublicKeyType->ByteArray", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.PublicKeyType, stackitem.ByteArrayT) }) t.Run("good, single type, AnyType->do not change initial type", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.AnyType, stackitem.IntegerT) // Special case, compiler should leave the type "as is" and do not emit conversion code. }) // Test for InteropInterface->... is missing, because we don't enforce conversion to stackitem.InteropInterface, // but compiler still checks these notifications against expected manifest. t.Run("good, multiple types, check the conversion order", func(t *testing.T) { check(t, methodWithoutEllipsis, []smartcontract.ParamType{ smartcontract.IntegerType, smartcontract.BoolType, smartcontract.ByteArrayType, smartcontract.PublicKeyType, smartcontract.Hash160Type, smartcontract.AnyType, // leave initial type smartcontract.StringType, }, []stackitem.Type{ stackitem.IntegerT, stackitem.BooleanT, stackitem.ByteArrayT, stackitem.ByteArrayT, stackitem.ByteArrayT, stackitem.IntegerT, // leave initial type stackitem.ByteArrayT, }, false) }) t.Run("with ellipsis, do not emit conversion code", func(t *testing.T) { checkSingleType(t, methodWithEllipsis, smartcontract.IntegerType, stackitem.IntegerT) checkSingleType(t, methodWithEllipsis, smartcontract.BoolType, stackitem.IntegerT) checkSingleType(t, methodWithEllipsis, smartcontract.ByteArrayType, stackitem.IntegerT) }) t.Run("no events check => no conversion code", func(t *testing.T) { checkSingleType(t, methodWithoutEllipsis, smartcontract.PublicKeyType, stackitem.IntegerT, true) }) }