package vm import ( "bytes" "encoding/binary" "encoding/hex" "math/big" "math/rand" "testing" "github.com/nspcc-dev/neo-go/pkg/crypto/hash" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" "github.com/nspcc-dev/neo-go/pkg/io" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neo-go/pkg/vm/emit" "github.com/nspcc-dev/neo-go/pkg/vm/opcode" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func fooInteropGetter(id uint32) *InteropFuncPrice { if id == InteropNameToID([]byte("foo")) { return &InteropFuncPrice{func(evm *VM) error { evm.Estack().PushVal(1) return nil }, 1} } return nil } func TestInteropHook(t *testing.T) { v := New() v.RegisterInteropGetter(fooInteropGetter) buf := io.NewBufBinWriter() emit.Syscall(buf.BinWriter, "foo") emit.Opcode(buf.BinWriter, opcode.RET) v.Load(buf.Bytes()) runVM(t, v) assert.Equal(t, 1, v.estack.Len()) assert.Equal(t, big.NewInt(1), v.estack.Pop().value.Value()) } func TestInteropHookViaID(t *testing.T) { v := New() v.RegisterInteropGetter(fooInteropGetter) buf := io.NewBufBinWriter() fooid := InteropNameToID([]byte("foo")) var id = make([]byte, 4) binary.LittleEndian.PutUint32(id, fooid) emit.Syscall(buf.BinWriter, string(id)) emit.Opcode(buf.BinWriter, opcode.RET) v.Load(buf.Bytes()) runVM(t, v) assert.Equal(t, 1, v.estack.Len()) assert.Equal(t, big.NewInt(1), v.estack.Pop().value.Value()) } func TestRegisterInteropGetter(t *testing.T) { v := New() currRegistered := len(v.getInterop) v.RegisterInteropGetter(fooInteropGetter) assert.Equal(t, currRegistered+1, len(v.getInterop)) } func TestVM_SetPriceGetter(t *testing.T) { v := New() prog := []byte{ byte(opcode.PUSH4), byte(opcode.PUSH2), byte(opcode.PUSHDATA1), 0x01, 0x01, byte(opcode.PUSHDATA1), 0x02, 0xCA, 0xFE, byte(opcode.PUSH4), byte(opcode.RET), } t.Run("no price getter", func(t *testing.T) { v.Load(prog) runVM(t, v) require.EqualValues(t, 0, v.GasConsumed()) }) v.SetPriceGetter(func(_ *VM, op opcode.Opcode, p []byte) util.Fixed8 { if op == opcode.PUSH4 { return 1 } else if op == opcode.PUSHDATA1 && bytes.Equal(p, []byte{0xCA, 0xFE}) { return 7 } return 0 }) t.Run("with price getter", func(t *testing.T) { v.Load(prog) runVM(t, v) require.EqualValues(t, 9, v.GasConsumed()) }) t.Run("with sufficient gas limit", func(t *testing.T) { v.Load(prog) v.SetGasLimit(9) runVM(t, v) require.EqualValues(t, 9, v.GasConsumed()) }) t.Run("with small gas limit", func(t *testing.T) { v.Load(prog) v.SetGasLimit(8) checkVMFailed(t, v) }) } func TestBytesToPublicKey(t *testing.T) { v := New() cache := v.GetPublicKeys() assert.Equal(t, 0, len(cache)) keyHex := "03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c" keyBytes, _ := hex.DecodeString(keyHex) key := v.bytesToPublicKey(keyBytes) assert.NotNil(t, key) key2 := v.bytesToPublicKey(keyBytes) assert.Equal(t, key, key2) cache = v.GetPublicKeys() assert.Equal(t, 1, len(cache)) assert.NotNil(t, cache[string(keyBytes)]) keyBytes[0] = 0xff require.Panics(t, func() { v.bytesToPublicKey(keyBytes) }) } func TestPushBytes1to75(t *testing.T) { buf := io.NewBufBinWriter() for i := 1; i <= 75; i++ { b := randomBytes(i) emit.Bytes(buf.BinWriter, b) vm := load(buf.Bytes()) err := vm.Step() require.NoError(t, err) assert.Equal(t, 1, vm.estack.Len()) elem := vm.estack.Pop() assert.IsType(t, &ByteArrayItem{}, elem.value) assert.IsType(t, elem.Bytes(), b) assert.Equal(t, 0, vm.estack.Len()) errExec := vm.execute(nil, opcode.RET, nil) require.NoError(t, errExec) assert.Equal(t, 0, vm.astack.Len()) assert.Equal(t, 0, vm.istack.Len()) buf.Reset() } } func TestPushBytesNoParam(t *testing.T) { prog := make([]byte, 1) prog[0] = byte(opcode.PUSHBYTES1) vm := load(prog) checkVMFailed(t, vm) } func runVM(t *testing.T, vm *VM) { err := vm.Run() require.NoError(t, err) assert.Equal(t, false, vm.HasFailed()) } func checkVMFailed(t *testing.T, vm *VM) { err := vm.Run() require.Error(t, err) assert.Equal(t, true, vm.HasFailed()) } func TestStackLimitPUSH1Good(t *testing.T) { prog := make([]byte, MaxStackSize*2) for i := 0; i < MaxStackSize; i++ { prog[i] = byte(opcode.PUSH1) } for i := MaxStackSize; i < MaxStackSize*2; i++ { prog[i] = byte(opcode.DROP) } v := load(prog) runVM(t, v) } func TestStackLimitPUSH1Bad(t *testing.T) { prog := make([]byte, MaxStackSize+1) for i := range prog { prog[i] = byte(opcode.PUSH1) } v := load(prog) checkVMFailed(t, v) } // appendBigStruct returns a program which: // 1. pushes size Structs on stack // 2. packs them into a new struct // 3. appends them to a zero-length array // Resulting stack size consists of: // - struct (size+1) // - array (1) of struct (size+1) // which equals to size*2+3 elements in total. func appendBigStruct(size uint16) []opcode.Opcode { prog := make([]opcode.Opcode, size*2) for i := uint16(0); i < size; i++ { prog[i*2] = opcode.PUSH0 prog[i*2+1] = opcode.NEWSTRUCT } return append(prog, opcode.PUSHBYTES2, opcode.Opcode(size), opcode.Opcode(size>>8), // LE opcode.PACK, opcode.NEWSTRUCT, opcode.DUP, opcode.PUSH0, opcode.NEWARRAY, opcode.TOALTSTACK, opcode.DUPFROMALTSTACK, opcode.SWAP, opcode.APPEND, opcode.RET) } func TestStackLimitAPPENDStructGood(t *testing.T) { prog := makeProgram(appendBigStruct(MaxStackSize/2 - 2)...) v := load(prog) runVM(t, v) // size = 2047 = (Max/2-2)*2+3 = Max-1 } func TestStackLimitAPPENDStructBad(t *testing.T) { prog := makeProgram(appendBigStruct(MaxStackSize/2 - 1)...) v := load(prog) checkVMFailed(t, v) // size = 2049 = (Max/2-1)*2+3 = Max+1 } func TestStackLimit(t *testing.T) { expected := []struct { inst opcode.Opcode size int }{ {opcode.PUSH2, 1}, {opcode.NEWARRAY, 3}, // array + 2 items {opcode.TOALTSTACK, 3}, {opcode.DUPFROMALTSTACK, 4}, {opcode.NEWSTRUCT, 6}, // all items are copied {opcode.NEWMAP, 7}, {opcode.DUP, 8}, {opcode.PUSH2, 9}, {opcode.DUPFROMALTSTACK, 10}, {opcode.SETITEM, 8}, // -3 items and 1 new element in map {opcode.DUP, 9}, {opcode.PUSH2, 10}, {opcode.DUPFROMALTSTACK, 11}, {opcode.SETITEM, 8}, // -3 items and no new elements in map {opcode.DUP, 9}, {opcode.PUSH2, 10}, {opcode.REMOVE, 7}, // as we have right after NEWMAP {opcode.DROP, 6}, // DROP map with no elements } prog := make([]opcode.Opcode, len(expected)) for i := range expected { prog[i] = expected[i].inst } vm := load(makeProgram(prog...)) for i := range expected { require.NoError(t, vm.Step()) require.Equal(t, expected[i].size, vm.size) } } func TestPushBytesShort(t *testing.T) { prog := make([]byte, 10) prog[0] = byte(opcode.PUSHBYTES10) // but only 9 left in the `prog` vm := load(prog) checkVMFailed(t, vm) } func TestPushm1to16(t *testing.T) { var prog []byte for i := int(opcode.PUSHM1); i <= int(opcode.PUSH16); i++ { if i == 80 { continue // opcode layout we got here. } prog = append(prog, byte(i)) } vm := load(prog) for i := int(opcode.PUSHM1); i <= int(opcode.PUSH16); i++ { if i == 80 { continue // nice opcode layout we got here. } err := vm.Step() require.NoError(t, err) elem := vm.estack.Pop() assert.IsType(t, &BigIntegerItem{}, elem.value) val := i - int(opcode.PUSH1) + 1 assert.Equal(t, elem.BigInt().Int64(), int64(val)) } } func TestPushData1BadNoN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA1)} vm := load(prog) checkVMFailed(t, vm) } func TestPushData1BadN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA1), 1} vm := load(prog) checkVMFailed(t, vm) } func TestPushData1Good(t *testing.T) { prog := makeProgram(opcode.PUSHDATA1, 3, 1, 2, 3) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte{1, 2, 3}, vm.estack.Pop().Bytes()) } func TestPushData2BadNoN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA2)} vm := load(prog) checkVMFailed(t, vm) } func TestPushData2ShortN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA2), 0} vm := load(prog) checkVMFailed(t, vm) } func TestPushData2BadN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA2), 1, 0} vm := load(prog) checkVMFailed(t, vm) } func TestPushData2Good(t *testing.T) { prog := makeProgram(opcode.PUSHDATA2, 3, 0, 1, 2, 3) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte{1, 2, 3}, vm.estack.Pop().Bytes()) } func TestPushData4BadNoN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA4)} vm := load(prog) checkVMFailed(t, vm) } func TestPushData4BadN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA4), 1, 0, 0, 0} vm := load(prog) checkVMFailed(t, vm) } func TestPushData4ShortN(t *testing.T) { prog := []byte{byte(opcode.PUSHDATA4), 0, 0, 0} vm := load(prog) checkVMFailed(t, vm) } func TestPushData4BigN(t *testing.T) { prog := make([]byte, 1+4+MaxItemSize+1) prog[0] = byte(opcode.PUSHDATA4) binary.LittleEndian.PutUint32(prog[1:], MaxItemSize+1) vm := load(prog) vm.Run() assert.Equal(t, true, vm.HasFailed()) } func TestPushData4Good(t *testing.T) { prog := makeProgram(opcode.PUSHDATA4, 3, 0, 0, 0, 1, 2, 3) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte{1, 2, 3}, vm.estack.Pop().Bytes()) } func getEnumeratorProg(n int, isIter bool) (prog []byte) { prog = append(prog, byte(opcode.TOALTSTACK)) for i := 0; i < n; i++ { prog = append(prog, byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getSyscallProg("Neo.Enumerator.Next")...) prog = append(prog, byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getSyscallProg("Neo.Enumerator.Value")...) if isIter { prog = append(prog, byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getSyscallProg("Neo.Iterator.Key")...) } } prog = append(prog, byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getSyscallProg("Neo.Enumerator.Next")...) return } func checkEnumeratorStack(t *testing.T, vm *VM, arr []StackItem) { require.Equal(t, len(arr)+1, vm.estack.Len()) require.Equal(t, NewBoolItem(false), vm.estack.Peek(0).value) for i := 0; i < len(arr); i++ { require.Equal(t, arr[i], vm.estack.Peek(i+1).value, "pos: %d", i+1) } } func testIterableCreate(t *testing.T, typ string) { isIter := typ == "Iterator" prog := getSyscallProg("Neo." + typ + ".Create") prog = append(prog, getEnumeratorProg(2, isIter)...) vm := load(prog) arr := []StackItem{ NewBigIntegerItem(42), NewByteArrayItem([]byte{3, 2, 1}), } vm.estack.Push(&Element{value: NewArrayItem(arr)}) runVM(t, vm) if isIter { checkEnumeratorStack(t, vm, []StackItem{ makeStackItem(1), arr[1], NewBoolItem(true), makeStackItem(0), arr[0], NewBoolItem(true), }) } else { checkEnumeratorStack(t, vm, []StackItem{ arr[1], NewBoolItem(true), arr[0], NewBoolItem(true), }) } } func TestEnumeratorCreate(t *testing.T) { testIterableCreate(t, "Enumerator") } func TestIteratorCreate(t *testing.T) { testIterableCreate(t, "Iterator") } func testIterableConcat(t *testing.T, typ string) { isIter := typ == "Iterator" prog := getSyscallProg("Neo." + typ + ".Create") prog = append(prog, byte(opcode.SWAP)) prog = append(prog, getSyscallProg("Neo."+typ+".Create")...) prog = append(prog, getSyscallProg("Neo."+typ+".Concat")...) prog = append(prog, getEnumeratorProg(3, isIter)...) vm := load(prog) arr := []StackItem{ NewBoolItem(false), NewBigIntegerItem(123), NewMapItem(), } vm.estack.Push(&Element{value: NewArrayItem(arr[:1])}) vm.estack.Push(&Element{value: NewArrayItem(arr[1:])}) runVM(t, vm) if isIter { // Yes, this is how iterators are concatenated in reference VM // https://github.com/neo-project/neo/blob/master-2.x/neo.UnitTests/UT_ConcatenatedIterator.cs#L54 checkEnumeratorStack(t, vm, []StackItem{ makeStackItem(1), arr[2], NewBoolItem(true), makeStackItem(0), arr[1], NewBoolItem(true), makeStackItem(0), arr[0], NewBoolItem(true), }) } else { checkEnumeratorStack(t, vm, []StackItem{ arr[2], NewBoolItem(true), arr[1], NewBoolItem(true), arr[0], NewBoolItem(true), }) } } func TestEnumeratorConcat(t *testing.T) { testIterableConcat(t, "Enumerator") } func TestIteratorConcat(t *testing.T) { testIterableConcat(t, "Iterator") } func TestIteratorKeys(t *testing.T) { prog := getSyscallProg("Neo.Iterator.Create") prog = append(prog, getSyscallProg("Neo.Iterator.Keys")...) prog = append(prog, byte(opcode.TOALTSTACK), byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getEnumeratorProg(2, false)...) v := load(prog) arr := NewArrayItem([]StackItem{ NewBoolItem(false), NewBigIntegerItem(42), }) v.estack.PushVal(arr) runVM(t, v) checkEnumeratorStack(t, v, []StackItem{ NewBigIntegerItem(1), NewBoolItem(true), NewBigIntegerItem(0), NewBoolItem(true), }) } func TestIteratorValues(t *testing.T) { prog := getSyscallProg("Neo.Iterator.Create") prog = append(prog, getSyscallProg("Neo.Iterator.Values")...) prog = append(prog, byte(opcode.TOALTSTACK), byte(opcode.DUPFROMALTSTACK)) prog = append(prog, getEnumeratorProg(2, false)...) v := load(prog) m := NewMapItem() m.Add(NewBigIntegerItem(1), NewBoolItem(false)) m.Add(NewByteArrayItem([]byte{32}), NewByteArrayItem([]byte{7})) v.estack.PushVal(m) runVM(t, v) require.Equal(t, 5, v.estack.Len()) require.Equal(t, NewBoolItem(false), v.estack.Peek(0).value) // Map values can be enumerated in any order. i1, i2 := 1, 3 if _, ok := v.estack.Peek(i1).value.(*BoolItem); !ok { i1, i2 = i2, i1 } require.Equal(t, NewBoolItem(false), v.estack.Peek(i1).value) require.Equal(t, NewByteArrayItem([]byte{7}), v.estack.Peek(i2).value) require.Equal(t, NewBoolItem(true), v.estack.Peek(2).value) require.Equal(t, NewBoolItem(true), v.estack.Peek(4).value) } func getSyscallProg(name string) (prog []byte) { prog = []byte{byte(opcode.SYSCALL)} prog = append(prog, byte(len(name))) prog = append(prog, name...) return } func getSerializeProg() (prog []byte) { prog = append(prog, getSyscallProg("Neo.Runtime.Serialize")...) prog = append(prog, getSyscallProg("Neo.Runtime.Deserialize")...) prog = append(prog, byte(opcode.RET)) return } func testSerialize(t *testing.T, vm *VM) { err := vm.Step() require.NoError(t, err) require.Equal(t, 1, vm.estack.Len()) require.IsType(t, (*ByteArrayItem)(nil), vm.estack.Top().value) err = vm.Step() require.NoError(t, err) require.Equal(t, 1, vm.estack.Len()) } func TestSerializeBool(t *testing.T) { vm := load(getSerializeProg()) vm.estack.PushVal(true) testSerialize(t, vm) require.IsType(t, (*BoolItem)(nil), vm.estack.Top().value) require.Equal(t, true, vm.estack.Top().Bool()) } func TestSerializeByteArray(t *testing.T) { vm := load(getSerializeProg()) value := []byte{1, 2, 3} vm.estack.PushVal(value) testSerialize(t, vm) require.IsType(t, (*ByteArrayItem)(nil), vm.estack.Top().value) require.Equal(t, value, vm.estack.Top().Bytes()) } func TestSerializeInteger(t *testing.T) { vm := load(getSerializeProg()) value := int64(123) vm.estack.PushVal(value) testSerialize(t, vm) require.IsType(t, (*BigIntegerItem)(nil), vm.estack.Top().value) require.Equal(t, value, vm.estack.Top().BigInt().Int64()) } func TestSerializeArray(t *testing.T) { vm := load(getSerializeProg()) item := NewArrayItem([]StackItem{ makeStackItem(true), makeStackItem(123), NewMapItem(), }) vm.estack.Push(&Element{value: item}) testSerialize(t, vm) require.IsType(t, (*ArrayItem)(nil), vm.estack.Top().value) require.Equal(t, item.value, vm.estack.Top().Array()) } func TestSerializeArrayBad(t *testing.T) { vm := load(getSerializeProg()) item := NewArrayItem(makeArrayOfFalses(2)) item.value[1] = item vm.estack.Push(&Element{value: item}) err := vm.Step() require.Error(t, err) require.True(t, vm.HasFailed()) } func TestSerializeDupInteger(t *testing.T) { prog := []byte{ byte(opcode.PUSH0), byte(opcode.NEWARRAY), byte(opcode.DUP), byte(opcode.PUSH2), byte(opcode.DUP), byte(opcode.TOALTSTACK), byte(opcode.APPEND), byte(opcode.DUP), byte(opcode.FROMALTSTACK), byte(opcode.APPEND), } vm := load(append(prog, getSerializeProg()...)) runVM(t, vm) } func TestSerializeStruct(t *testing.T) { vm := load(getSerializeProg()) item := NewStructItem([]StackItem{ makeStackItem(true), makeStackItem(123), NewMapItem(), }) vm.estack.Push(&Element{value: item}) testSerialize(t, vm) require.IsType(t, (*StructItem)(nil), vm.estack.Top().value) require.Equal(t, item.value, vm.estack.Top().Array()) } func TestDeserializeUnknown(t *testing.T) { prog := append(getSyscallProg("Neo.Runtime.Deserialize"), byte(opcode.RET)) vm := load(prog) data, err := SerializeItem(NewBigIntegerItem(123)) require.NoError(t, err) data[0] = 0xFF vm.estack.PushVal(data) checkVMFailed(t, vm) } func TestSerializeMap(t *testing.T) { vm := load(getSerializeProg()) item := NewMapItem() item.Add(makeStackItem(true), makeStackItem([]byte{1, 2, 3})) item.Add(makeStackItem([]byte{0}), makeStackItem(false)) vm.estack.Push(&Element{value: item}) testSerialize(t, vm) require.IsType(t, (*MapItem)(nil), vm.estack.Top().value) require.Equal(t, item.value, vm.estack.Top().value.(*MapItem).value) } func TestSerializeInterop(t *testing.T) { vm := load(getSerializeProg()) item := NewInteropItem("kek") vm.estack.Push(&Element{value: item}) err := vm.Step() require.Error(t, err) require.True(t, vm.HasFailed()) } func callNTimes(n uint16) []byte { return makeProgram( opcode.PUSHBYTES2, opcode.Opcode(n), opcode.Opcode(n>>8), // little-endian opcode.TOALTSTACK, opcode.DUPFROMALTSTACK, opcode.JMPIF, 0x4, 0, opcode.RET, opcode.FROMALTSTACK, opcode.DEC, opcode.CALL, 0xF8, 0xFF) // -8 -> JMP to TOALTSTACK) } func TestInvocationLimitGood(t *testing.T) { prog := callNTimes(MaxInvocationStackSize - 1) v := load(prog) runVM(t, v) } func TestInvocationLimitBad(t *testing.T) { prog := callNTimes(MaxInvocationStackSize) v := load(prog) checkVMFailed(t, v) } func TestNOTNoArgument(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) checkVMFailed(t, vm) } func TestNOTBool(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.PushVal(false) runVM(t, vm) assert.Equal(t, &BoolItem{true}, vm.estack.Pop().value) } func TestNOTNonZeroInt(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } func TestNOTArray(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.PushVal([]StackItem{}) runVM(t, vm) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } func TestNOTStruct(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.Push(NewElement(&StructItem{[]StackItem{}})) runVM(t, vm) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } func TestNOTByteArray0(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.PushVal([]byte{0, 0}) runVM(t, vm) assert.Equal(t, &BoolItem{true}, vm.estack.Pop().value) } func TestNOTByteArray1(t *testing.T) { prog := makeProgram(opcode.NOT) vm := load(prog) vm.estack.PushVal([]byte{0, 1}) runVM(t, vm) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } // getBigInt returns 2^a+b func getBigInt(a, b int64) *big.Int { p := new(big.Int).Exp(big.NewInt(2), big.NewInt(a), nil) p.Add(p, big.NewInt(b)) return p } func TestAdd(t *testing.T) { prog := makeProgram(opcode.ADD) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, int64(6), vm.estack.Pop().BigInt().Int64()) } func TestADDBigResult(t *testing.T) { prog := makeProgram(opcode.ADD) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits, -1)) vm.estack.PushVal(1) checkVMFailed(t, vm) } func testBigArgument(t *testing.T, inst opcode.Opcode) { prog := makeProgram(inst) x := getBigInt(MaxBigIntegerSizeBits, 0) t.Run(inst.String()+" big 1-st argument", func(t *testing.T) { vm := load(prog) vm.estack.PushVal(x) vm.estack.PushVal(0) checkVMFailed(t, vm) }) t.Run(inst.String()+" big 2-nd argument", func(t *testing.T) { vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal(x) checkVMFailed(t, vm) }) } func TestArithBigArgument(t *testing.T) { testBigArgument(t, opcode.ADD) testBigArgument(t, opcode.SUB) testBigArgument(t, opcode.MUL) testBigArgument(t, opcode.DIV) testBigArgument(t, opcode.MOD) } func TestMul(t *testing.T) { prog := makeProgram(opcode.MUL) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, int64(8), vm.estack.Pop().BigInt().Int64()) } func TestMULBigResult(t *testing.T) { prog := makeProgram(opcode.MUL) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits/2+1, 0)) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits/2+1, 0)) checkVMFailed(t, vm) } func TestDiv(t *testing.T) { prog := makeProgram(opcode.DIV) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, int64(2), vm.estack.Pop().BigInt().Int64()) } func TestSub(t *testing.T) { prog := makeProgram(opcode.SUB) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, int64(2), vm.estack.Pop().BigInt().Int64()) } func TestSUBBigResult(t *testing.T) { prog := makeProgram(opcode.SUB) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits, -1)) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestSHRGood(t *testing.T) { prog := makeProgram(opcode.SHR) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) } func TestSHRZero(t *testing.T) { prog := makeProgram(opcode.SHR) vm := load(prog) vm.estack.PushVal([]byte{0, 1}) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem([]byte{0, 1}), vm.estack.Pop().value) } func TestSHRSmallValue(t *testing.T) { prog := makeProgram(opcode.SHR) vm := load(prog) vm.estack.PushVal(5) vm.estack.PushVal(minSHLArg - 1) checkVMFailed(t, vm) } func TestSHRBigArgument(t *testing.T) { prog := makeProgram(opcode.SHR) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits, 0)) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestSHLGood(t *testing.T) { prog := makeProgram(opcode.SHL) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(16), vm.estack.Pop().value) } func TestSHLZero(t *testing.T) { prog := makeProgram(opcode.SHL) vm := load(prog) vm.estack.PushVal([]byte{0, 1}) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem([]byte{0, 1}), vm.estack.Pop().value) } func TestSHLBigValue(t *testing.T) { prog := makeProgram(opcode.SHL) vm := load(prog) vm.estack.PushVal(5) vm.estack.PushVal(maxSHLArg + 1) checkVMFailed(t, vm) } func TestSHLBigResult(t *testing.T) { prog := makeProgram(opcode.SHL) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits/2, 0)) vm.estack.PushVal(MaxBigIntegerSizeBits / 2) checkVMFailed(t, vm) } func TestSHLBigArgument(t *testing.T) { prog := makeProgram(opcode.SHR) vm := load(prog) vm.estack.PushVal(getBigInt(MaxBigIntegerSizeBits, 0)) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestLT(t *testing.T) { prog := makeProgram(opcode.LT) vm := load(prog) vm.estack.PushVal(4) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestLTE(t *testing.T) { prog := makeProgram(opcode.LTE) vm := load(prog) vm.estack.PushVal(2) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestGT(t *testing.T) { prog := makeProgram(opcode.GT) vm := load(prog) vm.estack.PushVal(9) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestGTE(t *testing.T) { prog := makeProgram(opcode.GTE) vm := load(prog) vm.estack.PushVal(3) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestDepth(t *testing.T) { prog := makeProgram(opcode.DEPTH) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, int64(3), vm.estack.Pop().BigInt().Int64()) } func TestEQUALNoArguments(t *testing.T) { prog := makeProgram(opcode.EQUAL) vm := load(prog) checkVMFailed(t, vm) } func TestEQUALBad1Argument(t *testing.T) { prog := makeProgram(opcode.EQUAL) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestEQUALGoodInteger(t *testing.T) { prog := makeProgram(opcode.EQUAL) vm := load(prog) vm.estack.PushVal(5) vm.estack.PushVal(5) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BoolItem{true}, vm.estack.Pop().value) } func TestEQUALArrayTrue(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.EQUAL) vm := load(prog) vm.estack.PushVal([]StackItem{}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BoolItem{true}, vm.estack.Pop().value) } func TestEQUALArrayFalse(t *testing.T) { prog := makeProgram(opcode.EQUAL) vm := load(prog) vm.estack.PushVal([]StackItem{}) vm.estack.PushVal([]StackItem{}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } func TestEQUALMapTrue(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.EQUAL) vm := load(prog) vm.estack.Push(&Element{value: NewMapItem()}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BoolItem{true}, vm.estack.Pop().value) } func TestEQUALMapFalse(t *testing.T) { prog := makeProgram(opcode.EQUAL) vm := load(prog) vm.estack.Push(&Element{value: NewMapItem()}) vm.estack.Push(&Element{value: NewMapItem()}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BoolItem{false}, vm.estack.Pop().value) } func TestNumEqual(t *testing.T) { prog := makeProgram(opcode.NUMEQUAL) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestNumNotEqual(t *testing.T) { prog := makeProgram(opcode.NUMNOTEQUAL) vm := load(prog) vm.estack.PushVal(2) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestINC(t *testing.T) { prog := makeProgram(opcode.INC) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, big.NewInt(2), vm.estack.Pop().BigInt()) } func TestINCBigResult(t *testing.T) { prog := makeProgram(opcode.INC, opcode.INC) vm := load(prog) x := getBigInt(MaxBigIntegerSizeBits, -2) vm.estack.PushVal(x) require.NoError(t, vm.Step()) require.False(t, vm.HasFailed()) require.Equal(t, 1, vm.estack.Len()) require.Equal(t, new(big.Int).Add(x, big.NewInt(1)), vm.estack.Top().BigInt()) checkVMFailed(t, vm) } func TestDECBigResult(t *testing.T) { prog := makeProgram(opcode.DEC, opcode.DEC) vm := load(prog) x := getBigInt(MaxBigIntegerSizeBits, -2) x.Neg(x) vm.estack.PushVal(x) require.NoError(t, vm.Step()) require.False(t, vm.HasFailed()) require.Equal(t, 1, vm.estack.Len()) require.Equal(t, new(big.Int).Sub(x, big.NewInt(1)), vm.estack.Top().BigInt()) checkVMFailed(t, vm) } func TestNEWARRAYInteger(t *testing.T) { prog := makeProgram(opcode.NEWARRAY) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{[]StackItem{makeStackItem(false)}}, vm.estack.Pop().value) } func TestNEWARRAYStruct(t *testing.T) { prog := makeProgram(opcode.NEWARRAY) vm := load(prog) arr := []StackItem{makeStackItem(42)} vm.estack.Push(&Element{value: &StructItem{arr}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{arr}, vm.estack.Pop().value) } func testNEWARRAYIssue437(t *testing.T, i1, i2 opcode.Opcode, appended bool) { prog := makeProgram( opcode.PUSH2, i1, opcode.DUP, opcode.PUSH3, opcode.APPEND, opcode.TOALTSTACK, opcode.DUPFROMALTSTACK, i2, opcode.DUP, opcode.PUSH4, opcode.APPEND, opcode.FROMALTSTACK, opcode.PUSH5, opcode.APPEND) vm := load(prog) vm.Run() arr := makeArrayOfFalses(4) arr[2] = makeStackItem(3) arr[3] = makeStackItem(4) if appended { arr = append(arr, makeStackItem(5)) } assert.Equal(t, false, vm.HasFailed()) assert.Equal(t, 1, vm.estack.Len()) if i2 == opcode.NEWARRAY { assert.Equal(t, &ArrayItem{arr}, vm.estack.Pop().value) } else { assert.Equal(t, &StructItem{arr}, vm.estack.Pop().value) } } func TestNEWARRAYIssue437(t *testing.T) { t.Run("Array+Array", func(t *testing.T) { testNEWARRAYIssue437(t, opcode.NEWARRAY, opcode.NEWARRAY, true) }) t.Run("Struct+Struct", func(t *testing.T) { testNEWARRAYIssue437(t, opcode.NEWSTRUCT, opcode.NEWSTRUCT, true) }) t.Run("Array+Struct", func(t *testing.T) { testNEWARRAYIssue437(t, opcode.NEWARRAY, opcode.NEWSTRUCT, false) }) t.Run("Struct+Array", func(t *testing.T) { testNEWARRAYIssue437(t, opcode.NEWSTRUCT, opcode.NEWARRAY, false) }) } func TestNEWARRAYArray(t *testing.T) { prog := makeProgram(opcode.NEWARRAY) vm := load(prog) arr := []StackItem{makeStackItem(42)} vm.estack.Push(&Element{value: &ArrayItem{arr}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{arr}, vm.estack.Pop().value) } func TestNEWARRAYByteArray(t *testing.T) { prog := makeProgram(opcode.NEWARRAY) vm := load(prog) vm.estack.PushVal([]byte{}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{[]StackItem{}}, vm.estack.Pop().value) } func TestNEWARRAYBadSize(t *testing.T) { prog := makeProgram(opcode.NEWARRAY) vm := load(prog) vm.estack.PushVal(MaxArraySize + 1) checkVMFailed(t, vm) } func TestNEWSTRUCTInteger(t *testing.T) { prog := makeProgram(opcode.NEWSTRUCT) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &StructItem{[]StackItem{makeStackItem(false)}}, vm.estack.Pop().value) } func TestNEWSTRUCTArray(t *testing.T) { prog := makeProgram(opcode.NEWSTRUCT) vm := load(prog) arr := []StackItem{makeStackItem(42)} vm.estack.Push(&Element{value: &ArrayItem{arr}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &StructItem{arr}, vm.estack.Pop().value) } func TestNEWSTRUCTStruct(t *testing.T) { prog := makeProgram(opcode.NEWSTRUCT) vm := load(prog) arr := []StackItem{makeStackItem(42)} vm.estack.Push(&Element{value: &StructItem{arr}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &StructItem{arr}, vm.estack.Pop().value) } func TestNEWSTRUCTByteArray(t *testing.T) { prog := makeProgram(opcode.NEWSTRUCT) vm := load(prog) vm.estack.PushVal([]byte{}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &StructItem{[]StackItem{}}, vm.estack.Pop().value) } func TestNEWSTRUCTBadSize(t *testing.T) { prog := makeProgram(opcode.NEWSTRUCT) vm := load(prog) vm.estack.PushVal(MaxArraySize + 1) checkVMFailed(t, vm) } func TestAPPENDArray(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSH5, opcode.APPEND) vm := load(prog) vm.estack.Push(&Element{value: &ArrayItem{}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{[]StackItem{makeStackItem(5)}}, vm.estack.Pop().value) } func TestAPPENDStruct(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSH5, opcode.APPEND) vm := load(prog) vm.estack.Push(&Element{value: &StructItem{}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &StructItem{[]StackItem{makeStackItem(5)}}, vm.estack.Pop().value) } func TestAPPENDCloneStruct(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSH0, opcode.NEWSTRUCT, opcode.TOALTSTACK, opcode.DUPFROMALTSTACK, opcode.APPEND, opcode.FROMALTSTACK, opcode.PUSH1, opcode.APPEND) vm := load(prog) vm.estack.Push(&Element{value: &ArrayItem{}}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{[]StackItem{ &StructItem{[]StackItem{}}, }}, vm.estack.Pop().value) } func TestAPPENDBadNoArguments(t *testing.T) { prog := makeProgram(opcode.APPEND) vm := load(prog) checkVMFailed(t, vm) } func TestAPPENDBad1Argument(t *testing.T) { prog := makeProgram(opcode.APPEND) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestAPPENDWrongType(t *testing.T) { prog := makeProgram(opcode.APPEND) vm := load(prog) vm.estack.PushVal([]byte{}) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestAPPENDGoodSizeLimit(t *testing.T) { prog := makeProgram(opcode.NEWARRAY, opcode.DUP, opcode.PUSH0, opcode.APPEND) vm := load(prog) vm.estack.PushVal(MaxArraySize - 1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, MaxArraySize, len(vm.estack.Pop().Array())) } func TestAPPENDBadSizeLimit(t *testing.T) { prog := makeProgram(opcode.NEWARRAY, opcode.DUP, opcode.PUSH0, opcode.APPEND) vm := load(prog) vm.estack.PushVal(MaxArraySize) checkVMFailed(t, vm) } func TestPICKITEMBadIndex(t *testing.T) { prog := makeProgram(opcode.PICKITEM) vm := load(prog) vm.estack.PushVal([]StackItem{}) vm.estack.PushVal(0) checkVMFailed(t, vm) } func TestPICKITEMArray(t *testing.T) { prog := makeProgram(opcode.PICKITEM) vm := load(prog) vm.estack.PushVal([]StackItem{makeStackItem(1), makeStackItem(2)}) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestPICKITEMByteArray(t *testing.T) { prog := makeProgram(opcode.PICKITEM) vm := load(prog) vm.estack.PushVal([]byte{1, 2}) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestPICKITEMDupArray(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSH0, opcode.PICKITEM, opcode.ABS) vm := load(prog) vm.estack.PushVal([]StackItem{makeStackItem(-1)}) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) items := vm.estack.Pop().Value().([]StackItem) assert.Equal(t, big.NewInt(-1), items[0].Value()) } func TestPICKITEMDupMap(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSHBYTES1, 42, opcode.PICKITEM, opcode.ABS) vm := load(prog) m := NewMapItem() m.Add(makeStackItem([]byte{42}), makeStackItem(-1)) vm.estack.Push(&Element{value: m}) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) items := vm.estack.Pop().Value().(map[interface{}]StackItem) assert.Equal(t, big.NewInt(-1), items[string([]byte{42})].Value()) } func TestPICKITEMMap(t *testing.T) { prog := makeProgram(opcode.PICKITEM) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(3)) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(makeStackItem(5)) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(3), vm.estack.Pop().value) } func TestSETITEMMap(t *testing.T) { prog := makeProgram(opcode.SETITEM, opcode.PICKITEM) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(3)) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(5) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(5) vm.estack.PushVal([]byte{0, 1}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem([]byte{0, 1}), vm.estack.Pop().value) } func TestSETITEMBigMapBad(t *testing.T) { prog := makeProgram(opcode.SETITEM) vm := load(prog) m := NewMapItem() for i := 0; i < MaxArraySize; i++ { m.Add(makeStackItem(i), makeStackItem(i)) } vm.estack.Push(&Element{value: m}) vm.estack.PushVal(MaxArraySize) vm.estack.PushVal(0) checkVMFailed(t, vm) } func TestSETITEMBigMapGood(t *testing.T) { prog := makeProgram(opcode.SETITEM) vm := load(prog) m := NewMapItem() for i := 0; i < MaxArraySize; i++ { m.Add(makeStackItem(i), makeStackItem(i)) } vm.estack.Push(&Element{value: m}) vm.estack.PushVal(0) vm.estack.PushVal(0) runVM(t, vm) } func TestSIZENoArgument(t *testing.T) { prog := makeProgram(opcode.SIZE) vm := load(prog) checkVMFailed(t, vm) } func TestSIZEByteArray(t *testing.T) { prog := makeProgram(opcode.SIZE) vm := load(prog) vm.estack.PushVal([]byte{0, 1}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestSIZEBool(t *testing.T) { prog := makeProgram(opcode.SIZE) vm := load(prog) vm.estack.PushVal(false) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) // assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) // FIXME revert when NEO 3.0 https://github.com/nspcc-dev/neo-go/issues/477 assert.Equal(t, makeStackItem(0), vm.estack.Pop().value) } func TestARRAYSIZEArray(t *testing.T) { prog := makeProgram(opcode.ARRAYSIZE) vm := load(prog) vm.estack.PushVal([]StackItem{ makeStackItem(1), makeStackItem([]byte{}), }) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestARRAYSIZEMap(t *testing.T) { prog := makeProgram(opcode.ARRAYSIZE) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(6)) m.Add(makeStackItem([]byte{0, 1}), makeStackItem(6)) vm.estack.Push(&Element{value: m}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestKEYSMap(t *testing.T) { prog := makeProgram(opcode.KEYS) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(6)) m.Add(makeStackItem([]byte{0, 1}), makeStackItem(6)) vm.estack.Push(&Element{value: m}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) top := vm.estack.Pop().value.(*ArrayItem) assert.Equal(t, 2, len(top.value)) assert.Contains(t, top.value, makeStackItem(5)) assert.Contains(t, top.value, makeStackItem([]byte{0, 1})) } func TestKEYSNoArgument(t *testing.T) { prog := makeProgram(opcode.KEYS) vm := load(prog) checkVMFailed(t, vm) } func TestKEYSWrongType(t *testing.T) { prog := makeProgram(opcode.KEYS) vm := load(prog) vm.estack.PushVal([]StackItem{}) checkVMFailed(t, vm) } func TestVALUESMap(t *testing.T) { prog := makeProgram(opcode.VALUES) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem([]byte{2, 3})) m.Add(makeStackItem([]byte{0, 1}), makeStackItem([]StackItem{})) vm.estack.Push(&Element{value: m}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) top := vm.estack.Pop().value.(*ArrayItem) assert.Equal(t, 2, len(top.value)) assert.Contains(t, top.value, makeStackItem([]byte{2, 3})) assert.Contains(t, top.value, makeStackItem([]StackItem{})) } func TestVALUESArray(t *testing.T) { prog := makeProgram(opcode.VALUES) vm := load(prog) vm.estack.PushVal([]StackItem{makeStackItem(4)}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ArrayItem{[]StackItem{makeStackItem(4)}}, vm.estack.Pop().value) } func TestVALUESNoArgument(t *testing.T) { prog := makeProgram(opcode.VALUES) vm := load(prog) checkVMFailed(t, vm) } func TestVALUESWrongType(t *testing.T) { prog := makeProgram(opcode.VALUES) vm := load(prog) vm.estack.PushVal(5) checkVMFailed(t, vm) } func TestHASKEYArrayTrue(t *testing.T) { prog := makeProgram(opcode.PUSH5, opcode.NEWARRAY, opcode.PUSH4, opcode.HASKEY) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(true), vm.estack.Pop().value) } func TestHASKEYArrayFalse(t *testing.T) { prog := makeProgram(opcode.PUSH5, opcode.NEWARRAY, opcode.PUSH5, opcode.HASKEY) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(false), vm.estack.Pop().value) } func TestHASKEYStructTrue(t *testing.T) { prog := makeProgram(opcode.PUSH5, opcode.NEWSTRUCT, opcode.PUSH4, opcode.HASKEY) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(true), vm.estack.Pop().value) } func TestHASKEYStructFalse(t *testing.T) { prog := makeProgram(opcode.PUSH5, opcode.NEWSTRUCT, opcode.PUSH5, opcode.HASKEY) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(false), vm.estack.Pop().value) } func TestHASKEYMapTrue(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(6)) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(5) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(true), vm.estack.Pop().value) } func TestHASKEYMapFalse(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(6)) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(6) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(false), vm.estack.Pop().value) } func TestHASKEYNoArguments(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) checkVMFailed(t, vm) } func TestHASKEY1Argument(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestHASKEYWrongKeyType(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) vm.estack.PushVal([]StackItem{}) vm.estack.PushVal([]StackItem{}) checkVMFailed(t, vm) } func TestHASKEYWrongCollectionType(t *testing.T) { prog := makeProgram(opcode.HASKEY) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestSIGNNoArgument(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) checkVMFailed(t, vm) } func TestSIGNWrongType(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal([]StackItem{}) checkVMFailed(t, vm) } func TestSIGNBool(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal(false) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BigIntegerItem{big.NewInt(0)}, vm.estack.Pop().value) } func TestSIGNPositiveInt(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BigIntegerItem{big.NewInt(1)}, vm.estack.Pop().value) } func TestSIGNNegativeInt(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal(-1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BigIntegerItem{big.NewInt(-1)}, vm.estack.Pop().value) } func TestSIGNZero(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BigIntegerItem{big.NewInt(0)}, vm.estack.Pop().value) } func TestSIGNByteArray(t *testing.T) { prog := makeProgram(opcode.SIGN) vm := load(prog) vm.estack.PushVal([]byte{0, 1}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &BigIntegerItem{big.NewInt(1)}, vm.estack.Pop().value) } func TestAppCall(t *testing.T) { prog := []byte{byte(opcode.APPCALL)} hash := util.Uint160{} prog = append(prog, hash.BytesBE()...) prog = append(prog, byte(opcode.RET)) vm := load(prog) vm.SetScriptGetter(func(in util.Uint160) []byte { if in.Equals(hash) { return makeProgram(opcode.DEPTH) } return nil }) vm.estack.PushVal(2) runVM(t, vm) elem := vm.estack.Pop() // depth should be 1 assert.Equal(t, int64(1), elem.BigInt().Int64()) } func TestSimpleCall(t *testing.T) { progStr := "52c56b525a7c616516006c766b00527ac46203006c766b00c3616c756653c56b6c766b00527ac46c766b51527ac46203006c766b00c36c766b51c393616c7566" result := 12 prog, err := hex.DecodeString(progStr) require.NoError(t, err) vm := load(prog) runVM(t, vm) assert.Equal(t, result, int(vm.estack.Pop().BigInt().Int64())) } func TestNZtrue(t *testing.T) { prog := makeProgram(opcode.NZ) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestNZfalse(t *testing.T) { prog := makeProgram(opcode.NZ) vm := load(prog) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestPICKbadNoitem(t *testing.T) { prog := makeProgram(opcode.PICK) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestPICKbadNegative(t *testing.T) { prog := makeProgram(opcode.PICK) vm := load(prog) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestPICKgood(t *testing.T) { prog := makeProgram(opcode.PICK) result := 2 vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal(1) vm.estack.PushVal(result) vm.estack.PushVal(3) vm.estack.PushVal(4) vm.estack.PushVal(5) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, int64(result), vm.estack.Pop().BigInt().Int64()) } func TestPICKDup(t *testing.T) { prog := makeProgram(opcode.PUSHM1, opcode.PUSH0, opcode.PUSH1, opcode.PUSH2, opcode.PICK, opcode.ABS) vm := load(prog) runVM(t, vm) assert.Equal(t, 4, vm.estack.Len()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(0), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(-1), vm.estack.Pop().BigInt().Int64()) } func TestROTBad(t *testing.T) { prog := makeProgram(opcode.ROT) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestROTGood(t *testing.T) { prog := makeProgram(opcode.ROT) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, 3, vm.estack.Len()) assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) assert.Equal(t, makeStackItem(3), vm.estack.Pop().value) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestROLLBad1(t *testing.T) { prog := makeProgram(opcode.ROLL) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestROLLBad2(t *testing.T) { prog := makeProgram(opcode.ROLL) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) vm.estack.PushVal(3) checkVMFailed(t, vm) } func TestROLLGood(t *testing.T) { prog := makeProgram(opcode.ROLL) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) vm.estack.PushVal(4) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 4, vm.estack.Len()) assert.Equal(t, makeStackItem(3), vm.estack.Pop().value) assert.Equal(t, makeStackItem(4), vm.estack.Pop().value) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) } func TestXTUCKbadNoitem(t *testing.T) { prog := makeProgram(opcode.XTUCK) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestXTUCKbadNoN(t *testing.T) { prog := makeProgram(opcode.XTUCK) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestXTUCKbadNegative(t *testing.T) { prog := makeProgram(opcode.XTUCK) vm := load(prog) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestXTUCKbadZero(t *testing.T) { prog := makeProgram(opcode.XTUCK) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(0) checkVMFailed(t, vm) } func TestXTUCKgood(t *testing.T) { prog := makeProgram(opcode.XTUCK) topelement := 5 xtuckdepth := 3 vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) vm.estack.PushVal(4) vm.estack.PushVal(topelement) vm.estack.PushVal(xtuckdepth) runVM(t, vm) assert.Equal(t, int64(topelement), vm.estack.Peek(0).BigInt().Int64()) assert.Equal(t, int64(topelement), vm.estack.Peek(xtuckdepth).BigInt().Int64()) } func TestTUCKbadNoitems(t *testing.T) { prog := makeProgram(opcode.TUCK) vm := load(prog) checkVMFailed(t, vm) } func TestTUCKbadNoitem(t *testing.T) { prog := makeProgram(opcode.TUCK) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestTUCKgood(t *testing.T) { prog := makeProgram(opcode.TUCK) vm := load(prog) vm.estack.PushVal(42) vm.estack.PushVal(34) runVM(t, vm) assert.Equal(t, int64(34), vm.estack.Peek(0).BigInt().Int64()) assert.Equal(t, int64(42), vm.estack.Peek(1).BigInt().Int64()) assert.Equal(t, int64(34), vm.estack.Peek(2).BigInt().Int64()) } func TestTUCKgood2(t *testing.T) { prog := makeProgram(opcode.TUCK) vm := load(prog) vm.estack.PushVal(11) vm.estack.PushVal(42) vm.estack.PushVal(34) runVM(t, vm) assert.Equal(t, int64(34), vm.estack.Peek(0).BigInt().Int64()) assert.Equal(t, int64(42), vm.estack.Peek(1).BigInt().Int64()) assert.Equal(t, int64(34), vm.estack.Peek(2).BigInt().Int64()) assert.Equal(t, int64(11), vm.estack.Peek(3).BigInt().Int64()) } func TestOVERbadNoitem(t *testing.T) { prog := makeProgram(opcode.OVER) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) } func TestOVERbadNoitems(t *testing.T) { prog := makeProgram(opcode.OVER) vm := load(prog) checkVMFailed(t, vm) } func TestOVERgood(t *testing.T) { prog := makeProgram(opcode.OVER) vm := load(prog) vm.estack.PushVal(42) vm.estack.PushVal(34) runVM(t, vm) assert.Equal(t, int64(42), vm.estack.Peek(0).BigInt().Int64()) assert.Equal(t, int64(34), vm.estack.Peek(1).BigInt().Int64()) assert.Equal(t, int64(42), vm.estack.Peek(2).BigInt().Int64()) assert.Equal(t, 3, vm.estack.Len()) } func TestOVERDup(t *testing.T) { prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.PUSH1, opcode.OVER, opcode.PUSH1, opcode.LEFT, opcode.PUSHBYTES1, 2, opcode.CAT) vm := load(prog) runVM(t, vm) assert.Equal(t, 3, vm.estack.Len()) assert.Equal(t, []byte{0x01, 0x02}, vm.estack.Pop().Bytes()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, []byte{0x01, 0x00}, vm.estack.Pop().Bytes()) } func TestNIPBadNoItem(t *testing.T) { prog := makeProgram(opcode.NIP) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestNIPGood(t *testing.T) { prog := makeProgram(opcode.NIP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(2), vm.estack.Pop().value) } func TestDROPBadNoItem(t *testing.T) { prog := makeProgram(opcode.DROP) vm := load(prog) checkVMFailed(t, vm) } func TestDROPGood(t *testing.T) { prog := makeProgram(opcode.DROP) vm := load(prog) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 0, vm.estack.Len()) } func TestXDROPbadNoitem(t *testing.T) { prog := makeProgram(opcode.XDROP) vm := load(prog) checkVMFailed(t, vm) } func TestXDROPbadNoN(t *testing.T) { prog := makeProgram(opcode.XDROP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestXDROPbadNegative(t *testing.T) { prog := makeProgram(opcode.XDROP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestXDROPgood(t *testing.T) { prog := makeProgram(opcode.XDROP) vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, int64(2), vm.estack.Peek(0).BigInt().Int64()) assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64()) } func TestINVERTbadNoitem(t *testing.T) { prog := makeProgram(opcode.INVERT) vm := load(prog) checkVMFailed(t, vm) } func TestINVERTgood1(t *testing.T) { prog := makeProgram(opcode.INVERT) vm := load(prog) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, int64(-1), vm.estack.Peek(0).BigInt().Int64()) } func TestINVERTgood2(t *testing.T) { prog := makeProgram(opcode.INVERT) vm := load(prog) vm.estack.PushVal(-1) runVM(t, vm) assert.Equal(t, int64(0), vm.estack.Peek(0).BigInt().Int64()) } func TestINVERTgood3(t *testing.T) { prog := makeProgram(opcode.INVERT) vm := load(prog) vm.estack.PushVal(0x69) runVM(t, vm) assert.Equal(t, int64(-0x6A), vm.estack.Peek(0).BigInt().Int64()) } func TestINVERTWithConversion1(t *testing.T) { prog := makeProgram(opcode.PUSHDATA2, 0, 0, opcode.INVERT) vm := load(prog) runVM(t, vm) assert.Equal(t, int64(-1), vm.estack.Peek(0).BigInt().Int64()) } func TestINVERTWithConversion2(t *testing.T) { prog := makeProgram(opcode.PUSH0, opcode.PUSH1, opcode.NUMEQUAL, opcode.INVERT) vm := load(prog) runVM(t, vm) assert.Equal(t, int64(-1), vm.estack.Peek(0).BigInt().Int64()) } func TestCATBadNoArgs(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) checkVMFailed(t, vm) } func TestCATBadOneArg(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) vm.estack.PushVal([]byte("abc")) checkVMFailed(t, vm) } func TestCATBadBigItem(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) vm.estack.PushVal(make([]byte, MaxItemSize/2+1)) vm.estack.PushVal(make([]byte, MaxItemSize/2+1)) vm.Run() assert.Equal(t, true, vm.HasFailed()) } func TestCATGood(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) vm.estack.PushVal([]byte("abc")) vm.estack.PushVal([]byte("def")) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("abcdef"), vm.estack.Peek(0).Bytes()) } func TestCATInt0ByteArray(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal([]byte{}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ByteArrayItem{[]byte{0}}, vm.estack.Pop().value) } func TestCATByteArrayInt1(t *testing.T) { prog := makeProgram(opcode.CAT) vm := load(prog) vm.estack.PushVal([]byte{}) vm.estack.PushVal(1) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, &ByteArrayItem{[]byte{1}}, vm.estack.Pop().value) } func TestSUBSTRBadNoArgs(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) checkVMFailed(t, vm) } func TestSUBSTRBadOneArg(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestSUBSTRBadTwoArgs(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal(0) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestSUBSTRGood(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(1) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("bc"), vm.estack.Peek(0).Bytes()) } func TestSUBSTRBadOffset(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(7) vm.estack.PushVal(1) // checkVMFailed(t, vm) // FIXME revert when NEO 3.0 https://github.com/nspcc-dev/neo-go/issues/477 runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte{}, vm.estack.Peek(0).Bytes()) } func TestSUBSTRBigLen(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(1) vm.estack.PushVal(6) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("bcdef"), vm.estack.Pop().Bytes()) } func TestSUBSTRBad387(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) b := make([]byte, 6, 20) copy(b, "abcdef") vm.estack.PushVal(b) vm.estack.PushVal(1) vm.estack.PushVal(6) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("bcdef"), vm.estack.Pop().Bytes()) } func TestSUBSTRBadNegativeOffset(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(-1) vm.estack.PushVal(3) checkVMFailed(t, vm) } func TestSUBSTRBadNegativeLen(t *testing.T) { prog := makeProgram(opcode.SUBSTR) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(3) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestLEFTBadNoArgs(t *testing.T) { prog := makeProgram(opcode.LEFT) vm := load(prog) checkVMFailed(t, vm) } func TestLEFTBadNoString(t *testing.T) { prog := makeProgram(opcode.LEFT) vm := load(prog) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestLEFTBadNegativeLen(t *testing.T) { prog := makeProgram(opcode.LEFT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestLEFTGood(t *testing.T) { prog := makeProgram(opcode.LEFT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("ab"), vm.estack.Peek(0).Bytes()) } func TestLEFTGoodLen(t *testing.T) { prog := makeProgram(opcode.LEFT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(8) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("abcdef"), vm.estack.Peek(0).Bytes()) } func TestRIGHTBadNoArgs(t *testing.T) { prog := makeProgram(opcode.RIGHT) vm := load(prog) checkVMFailed(t, vm) } func TestRIGHTBadNoString(t *testing.T) { prog := makeProgram(opcode.RIGHT) vm := load(prog) vm.estack.PushVal(2) checkVMFailed(t, vm) } func TestRIGHTBadNegativeLen(t *testing.T) { prog := makeProgram(opcode.RIGHT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestRIGHTGood(t *testing.T) { prog := makeProgram(opcode.RIGHT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(2) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []byte("ef"), vm.estack.Peek(0).Bytes()) } func TestRIGHTBadLen(t *testing.T) { prog := makeProgram(opcode.RIGHT) vm := load(prog) vm.estack.PushVal([]byte("abcdef")) vm.estack.PushVal(8) checkVMFailed(t, vm) } func TestPACKBadLen(t *testing.T) { prog := makeProgram(opcode.PACK) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestPACKBigLen(t *testing.T) { prog := makeProgram(opcode.PACK) vm := load(prog) for i := 0; i <= MaxArraySize; i++ { vm.estack.PushVal(0) } vm.estack.PushVal(MaxArraySize + 1) checkVMFailed(t, vm) } func TestPACKGoodZeroLen(t *testing.T) { prog := makeProgram(opcode.PACK) vm := load(prog) vm.estack.PushVal(0) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, []StackItem{}, vm.estack.Peek(0).Array()) } func TestPACKGood(t *testing.T) { prog := makeProgram(opcode.PACK) elements := []int{55, 34, 42} vm := load(prog) // canary vm.estack.PushVal(1) for i := len(elements) - 1; i >= 0; i-- { vm.estack.PushVal(elements[i]) } vm.estack.PushVal(len(elements)) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) a := vm.estack.Peek(0).Array() assert.Equal(t, len(elements), len(a)) for i := 0; i < len(elements); i++ { e := a[i].Value().(*big.Int) assert.Equal(t, int64(elements[i]), e.Int64()) } assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64()) } func TestUNPACKBadNotArray(t *testing.T) { prog := makeProgram(opcode.UNPACK) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestUNPACKGood(t *testing.T) { prog := makeProgram(opcode.UNPACK) elements := []int{55, 34, 42} vm := load(prog) // canary vm.estack.PushVal(1) vm.estack.PushVal(elements) runVM(t, vm) assert.Equal(t, 5, vm.estack.Len()) assert.Equal(t, int64(len(elements)), vm.estack.Peek(0).BigInt().Int64()) for k, v := range elements { assert.Equal(t, int64(v), vm.estack.Peek(k+1).BigInt().Int64()) } assert.Equal(t, int64(1), vm.estack.Peek(len(elements)+1).BigInt().Int64()) } func TestREVERSEBadNotArray(t *testing.T) { prog := makeProgram(opcode.REVERSE) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func testREVERSEIssue437(t *testing.T, i1, i2 opcode.Opcode, reversed bool) { prog := makeProgram( opcode.PUSH0, i1, opcode.DUP, opcode.PUSH1, opcode.APPEND, opcode.DUP, opcode.PUSH2, opcode.APPEND, opcode.DUP, i2, opcode.REVERSE) vm := load(prog) vm.Run() arr := make([]StackItem, 2) if reversed { arr[0] = makeStackItem(2) arr[1] = makeStackItem(1) } else { arr[0] = makeStackItem(1) arr[1] = makeStackItem(2) } assert.Equal(t, false, vm.HasFailed()) assert.Equal(t, 1, vm.estack.Len()) if i1 == opcode.NEWARRAY { assert.Equal(t, &ArrayItem{arr}, vm.estack.Pop().value) } else { assert.Equal(t, &StructItem{arr}, vm.estack.Pop().value) } } func TestREVERSEIssue437(t *testing.T) { t.Run("Array+Array", func(t *testing.T) { testREVERSEIssue437(t, opcode.NEWARRAY, opcode.NEWARRAY, true) }) t.Run("Struct+Struct", func(t *testing.T) { testREVERSEIssue437(t, opcode.NEWSTRUCT, opcode.NEWSTRUCT, true) }) t.Run("Array+Struct", func(t *testing.T) { testREVERSEIssue437(t, opcode.NEWARRAY, opcode.NEWSTRUCT, false) }) t.Run("Struct+Array", func(t *testing.T) { testREVERSEIssue437(t, opcode.NEWSTRUCT, opcode.NEWARRAY, false) }) } func TestREVERSEGoodOneElem(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.REVERSE) elements := []int{22} vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(elements) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) a := vm.estack.Peek(0).Array() assert.Equal(t, len(elements), len(a)) e := a[0].Value().(*big.Int) assert.Equal(t, int64(elements[0]), e.Int64()) } func TestREVERSEGoodStruct(t *testing.T) { eodd := []int{22, 34, 42, 55, 81} even := []int{22, 34, 42, 55, 81, 99} eall := [][]int{eodd, even} for _, elements := range eall { prog := makeProgram(opcode.DUP, opcode.REVERSE) vm := load(prog) vm.estack.PushVal(1) arr := make([]StackItem, len(elements)) for i := range elements { arr[i] = makeStackItem(elements[i]) } vm.estack.Push(&Element{value: &StructItem{arr}}) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) a := vm.estack.Peek(0).Array() assert.Equal(t, len(elements), len(a)) for k, v := range elements { e := a[len(a)-1-k].Value().(*big.Int) assert.Equal(t, int64(v), e.Int64()) } assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64()) } } func TestREVERSEGood(t *testing.T) { eodd := []int{22, 34, 42, 55, 81} even := []int{22, 34, 42, 55, 81, 99} eall := [][]int{eodd, even} for _, elements := range eall { prog := makeProgram(opcode.DUP, opcode.REVERSE) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(elements) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) a := vm.estack.Peek(0).Array() assert.Equal(t, len(elements), len(a)) for k, v := range elements { e := a[len(a)-1-k].Value().(*big.Int) assert.Equal(t, int64(v), e.Int64()) } assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64()) } } func TestREMOVEBadNoArgs(t *testing.T) { prog := makeProgram(opcode.REMOVE) vm := load(prog) checkVMFailed(t, vm) } func TestREMOVEBadOneArg(t *testing.T) { prog := makeProgram(opcode.REMOVE) vm := load(prog) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestREMOVEBadNotArray(t *testing.T) { prog := makeProgram(opcode.REMOVE) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(1) checkVMFailed(t, vm) } func TestREMOVEBadIndex(t *testing.T) { prog := makeProgram(opcode.REMOVE) elements := []int{22, 34, 42, 55, 81} vm := load(prog) vm.estack.PushVal(elements) vm.estack.PushVal(10) checkVMFailed(t, vm) } func TestREMOVEGood(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.PUSH2, opcode.REMOVE) elements := []int{22, 34, 42, 55, 81} reselements := []int{22, 34, 55, 81} vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(elements) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, makeStackItem(reselements), vm.estack.Pop().value) assert.Equal(t, makeStackItem(1), vm.estack.Pop().value) } func TestREMOVEMap(t *testing.T) { prog := makeProgram(opcode.REMOVE, opcode.PUSH5, opcode.HASKEY) vm := load(prog) m := NewMapItem() m.Add(makeStackItem(5), makeStackItem(3)) m.Add(makeStackItem([]byte{0, 1}), makeStackItem([]byte{2, 3})) vm.estack.Push(&Element{value: m}) vm.estack.Push(&Element{value: m}) vm.estack.PushVal(makeStackItem(5)) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, makeStackItem(false), vm.estack.Pop().value) } func TestCHECKSIGNoArgs(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) vm := load(prog) checkVMFailed(t, vm) } func TestCHECKSIGOneArg(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.estack.PushVal(pbytes) checkVMFailed(t, vm) } func TestCHECKSIGNoSigLoaded(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := "NEO - An Open Network For Smart Economy" sig := pk.Sign([]byte(msg)) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.estack.PushVal(sig) vm.estack.PushVal(pbytes) checkVMFailed(t, vm) } func TestCHECKSIGBadKey(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig := pk.Sign(msg) pbytes := pk.PublicKey().Bytes()[:4] vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal(sig) vm.estack.PushVal(pbytes) checkVMFailed(t, vm) } func TestCHECKSIGWrongSig(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig := pk.Sign(msg) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal(util.ArrayReverse(sig)) vm.estack.PushVal(pbytes) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestCHECKSIGGood(t *testing.T) { prog := makeProgram(opcode.CHECKSIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig := pk.Sign(msg) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal(sig) vm.estack.PushVal(pbytes) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestVERIFYGood(t *testing.T) { prog := makeProgram(opcode.VERIFY) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig := pk.Sign(msg) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.estack.PushVal(msg) vm.estack.PushVal(sig) vm.estack.PushVal(pbytes) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestVERIFYBad(t *testing.T) { prog := makeProgram(opcode.VERIFY) pk, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig := pk.Sign(msg) pbytes := pk.PublicKey().Bytes() vm := load(prog) vm.estack.PushVal(util.ArrayReverse(msg)) vm.estack.PushVal(sig) vm.estack.PushVal(pbytes) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, false, vm.estack.Pop().Bool()) } func TestCHECKMULTISIGNoArgs(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) vm := load(prog) checkVMFailed(t, vm) } func TestCHECKMULTISIGOneArg(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) pk, err := keys.NewPrivateKey() assert.Nil(t, err) vm := load(prog) pbytes := pk.PublicKey().Bytes() vm.estack.PushVal([]StackItem{NewByteArrayItem(pbytes)}) checkVMFailed(t, vm) } func TestCHECKMULTISIGNotEnoughKeys(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) pk1, err := keys.NewPrivateKey() assert.Nil(t, err) pk2, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig1 := pk1.Sign(msg) sig2 := pk2.Sign(msg) pbytes1 := pk1.PublicKey().Bytes() vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal([]StackItem{NewByteArrayItem(sig1), NewByteArrayItem(sig2)}) vm.estack.PushVal([]StackItem{NewByteArrayItem(pbytes1)}) checkVMFailed(t, vm) } func TestCHECKMULTISIGNoHash(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) pk1, err := keys.NewPrivateKey() assert.Nil(t, err) pk2, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig1 := pk1.Sign(msg) sig2 := pk2.Sign(msg) pbytes1 := pk1.PublicKey().Bytes() pbytes2 := pk2.PublicKey().Bytes() vm := load(prog) vm.estack.PushVal([]StackItem{NewByteArrayItem(sig1), NewByteArrayItem(sig2)}) vm.estack.PushVal([]StackItem{NewByteArrayItem(pbytes1), NewByteArrayItem(pbytes2)}) checkVMFailed(t, vm) } func TestCHECKMULTISIGBadKey(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) pk1, err := keys.NewPrivateKey() assert.Nil(t, err) pk2, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig1 := pk1.Sign(msg) sig2 := pk2.Sign(msg) pbytes1 := pk1.PublicKey().Bytes() pbytes2 := pk2.PublicKey().Bytes()[:4] vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal([]StackItem{NewByteArrayItem(sig1), NewByteArrayItem(sig2)}) vm.estack.PushVal([]StackItem{NewByteArrayItem(pbytes1), NewByteArrayItem(pbytes2)}) checkVMFailed(t, vm) } func TestCHECKMULTISIGBadSig(t *testing.T) { prog := makeProgram(opcode.CHECKMULTISIG) pk1, err := keys.NewPrivateKey() assert.Nil(t, err) pk2, err := keys.NewPrivateKey() assert.Nil(t, err) msg := []byte("NEO - An Open Network For Smart Economy") sig1 := pk1.Sign(msg) sig2 := pk2.Sign(msg) pbytes1 := pk1.PublicKey().Bytes() pbytes2 := pk2.PublicKey().Bytes() vm := load(prog) vm.SetCheckedHash(hash.Sha256(msg).BytesBE()) vm.estack.PushVal([]StackItem{NewByteArrayItem(util.ArrayReverse(sig1)), NewByteArrayItem(sig2)}) vm.estack.PushVal([]StackItem{NewByteArrayItem(pbytes1), NewByteArrayItem(pbytes2)}) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, false, vm.estack.Pop().Bool()) } func initCHECKMULTISIG(msg []byte, n int) ([]StackItem, []StackItem, map[string]*keys.PublicKey, error) { var err error keyMap := make(map[string]*keys.PublicKey) pkeys := make([]*keys.PrivateKey, n) pubs := make([]StackItem, n) for i := range pubs { pkeys[i], err = keys.NewPrivateKey() if err != nil { return nil, nil, nil, err } pk := pkeys[i].PublicKey() data := pk.Bytes() pubs[i] = NewByteArrayItem(data) keyMap[string(data)] = pk } sigs := make([]StackItem, n) for i := range sigs { sig := pkeys[i].Sign(msg) sigs[i] = NewByteArrayItem(sig) } return pubs, sigs, keyMap, nil } func subSlice(arr []StackItem, indices []int) []StackItem { if indices == nil { return arr } result := make([]StackItem, len(indices)) for i, j := range indices { result[i] = arr[j] } return result } func initCHECKMULTISIGVM(t *testing.T, n int, ik, is []int) *VM { prog := makeProgram(opcode.CHECKMULTISIG) v := load(prog) msg := []byte("NEO - An Open Network For Smart Economy") v.SetCheckedHash(hash.Sha256(msg).BytesBE()) pubs, sigs, _, err := initCHECKMULTISIG(msg, n) require.NoError(t, err) pubs = subSlice(pubs, ik) sigs = subSlice(sigs, is) v.estack.PushVal(sigs) v.estack.PushVal(pubs) return v } func testCHECKMULTISIGGood(t *testing.T, n int, is []int) { v := initCHECKMULTISIGVM(t, n, nil, is) runVM(t, v) assert.Equal(t, 1, v.estack.Len()) assert.True(t, v.estack.Pop().Bool()) } func TestCHECKMULTISIGGood(t *testing.T) { t.Run("3_1", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{1}) }) t.Run("2_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 2, []int{0, 1}) }) t.Run("3_3", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{0, 1, 2}) }) t.Run("3_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{0, 2}) }) t.Run("4_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 4, []int{0, 2}) }) t.Run("10_7", func(t *testing.T) { testCHECKMULTISIGGood(t, 10, []int{2, 3, 4, 5, 6, 8, 9}) }) t.Run("12_9", func(t *testing.T) { testCHECKMULTISIGGood(t, 12, []int{0, 1, 4, 5, 6, 7, 8, 9}) }) } func testCHECKMULTISIGBad(t *testing.T, n int, ik, is []int) { v := initCHECKMULTISIGVM(t, n, ik, is) runVM(t, v) assert.Equal(t, 1, v.estack.Len()) assert.False(t, v.estack.Pop().Bool()) } func TestCHECKMULTISIGBad(t *testing.T) { t.Run("1_1 wrong signature", func(t *testing.T) { testCHECKMULTISIGBad(t, 2, []int{0}, []int{1}) }) t.Run("3_2 wrong order", func(t *testing.T) { testCHECKMULTISIGBad(t, 3, []int{0, 2}, []int{2, 0}) }) t.Run("3_2 duplicate sig", func(t *testing.T) { testCHECKMULTISIGBad(t, 3, nil, []int{0, 0}) }) } func TestSWAPGood(t *testing.T) { prog := makeProgram(opcode.SWAP) vm := load(prog) vm.estack.PushVal(2) vm.estack.PushVal(4) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, int64(2), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(4), vm.estack.Pop().BigInt().Int64()) } func TestSWAPBad1(t *testing.T) { prog := makeProgram(opcode.SWAP) vm := load(prog) vm.estack.PushVal(4) checkVMFailed(t, vm) } func TestSWAPBad2(t *testing.T) { prog := makeProgram(opcode.SWAP) vm := load(prog) checkVMFailed(t, vm) } func TestXSWAPGood(t *testing.T) { prog := makeProgram(opcode.XSWAP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) vm.estack.PushVal(4) vm.estack.PushVal(5) vm.estack.PushVal(3) runVM(t, vm) assert.Equal(t, 5, vm.estack.Len()) assert.Equal(t, int64(2), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(4), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(3), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(5), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) } func TestXSWAPBad1(t *testing.T) { prog := makeProgram(opcode.XSWAP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(-1) checkVMFailed(t, vm) } func TestXSWAPBad2(t *testing.T) { prog := makeProgram(opcode.XSWAP) vm := load(prog) vm.estack.PushVal(1) vm.estack.PushVal(2) vm.estack.PushVal(3) vm.estack.PushVal(4) vm.estack.PushVal(4) checkVMFailed(t, vm) } func TestDupInt(t *testing.T) { prog := makeProgram(opcode.DUP, opcode.ABS) vm := load(prog) vm.estack.PushVal(-1) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64()) assert.Equal(t, int64(-1), vm.estack.Pop().BigInt().Int64()) } func TestDupByteArray(t *testing.T) { prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.DUP, opcode.PUSH1, opcode.LEFT, opcode.PUSHBYTES1, 2, opcode.CAT) vm := load(prog) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, []byte{0x01, 0x02}, vm.estack.Pop().Bytes()) assert.Equal(t, []byte{0x01, 0x00}, vm.estack.Pop().Bytes()) } func TestDupBool(t *testing.T) { prog := makeProgram(opcode.PUSH0, opcode.NOT, opcode.DUP, opcode.PUSH1, opcode.NOT, opcode.BOOLAND) vm := load(prog) runVM(t, vm) assert.Equal(t, 2, vm.estack.Len()) assert.Equal(t, false, vm.estack.Pop().Bool()) assert.Equal(t, true, vm.estack.Pop().Bool()) } func TestSHA1(t *testing.T) { // 0x0100 hashes to 0e356ba505631fbf715758bed27d503f8b260e3a res := "0e356ba505631fbf715758bed27d503f8b260e3a" prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.SHA1) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, res, hex.EncodeToString(vm.estack.Pop().Bytes())) } func TestSHA256(t *testing.T) { // 0x0100 hashes to 47dc540c94ceb704a23875c11273e16bb0b8a87aed84de911f2133568115f254 res := "47dc540c94ceb704a23875c11273e16bb0b8a87aed84de911f2133568115f254" prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.SHA256) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, res, hex.EncodeToString(vm.estack.Pop().Bytes())) } func TestHASH160(t *testing.T) { // 0x0100 hashes to fbc22d517f38e7612798ece8e5957cf6c41d8caf res := "fbc22d517f38e7612798ece8e5957cf6c41d8caf" prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.HASH160) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, res, hex.EncodeToString(vm.estack.Pop().Bytes())) } func TestHASH256(t *testing.T) { // 0x0100 hashes to 677b2d718464ee0121475600b929c0b4155667486577d1320b18c2dc7d4b4f99 res := "677b2d718464ee0121475600b929c0b4155667486577d1320b18c2dc7d4b4f99" prog := makeProgram(opcode.PUSHBYTES2, 1, 0, opcode.HASH256) vm := load(prog) runVM(t, vm) assert.Equal(t, 1, vm.estack.Len()) assert.Equal(t, res, hex.EncodeToString(vm.estack.Pop().Bytes())) } func makeProgram(opcodes ...opcode.Opcode) []byte { prog := make([]byte, len(opcodes)+1) // RET for i := 0; i < len(opcodes); i++ { prog[i] = byte(opcodes[i]) } prog[len(prog)-1] = byte(opcode.RET) return prog } func load(prog []byte) *VM { vm := New() vm.LoadScript(prog) return vm } func randomBytes(n int) []byte { const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" b := make([]byte, n) for i := range b { b[i] = charset[rand.Intn(len(charset))] } return b }