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neoneo-go/pkg/vm/vm_test.go
Evgenii Stratonikov cd8445aa59 vm: update stack size in SETITEM properly
2020-05-21 15:20:37 +03:00

3523 lines
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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 TestSerializeMapCompat(t *testing.T) {
// Create a map, push key and value, add KV to map, serialize.
progHex := "c776036b65790576616c7565c468154e656f2e52756e74696d652e53657269616c697a65"
resHex := "820100036b6579000576616c7565"
prog, err := hex.DecodeString(progHex)
require.NoError(t, err)
res, err := hex.DecodeString(resHex)
require.NoError(t, err)
vm := load(prog)
runVM(t, vm)
assert.Equal(t, res, vm.estack.Pop().Bytes())
}
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 TestArithNegativeArguments(t *testing.T) {
runCase := func(op opcode.Opcode, p, q, result int64) func(t *testing.T) {
return func(t *testing.T) {
vm := load(makeProgram(op))
vm.estack.PushVal(p)
vm.estack.PushVal(q)
runVM(t, vm)
assert.Equal(t, result, vm.estack.Pop().BigInt().Int64())
}
}
t.Run("DIV", func(t *testing.T) {
t.Run("positive/positive", runCase(opcode.DIV, 5, 2, 2))
t.Run("positive/negative", runCase(opcode.DIV, 5, -2, -2))
t.Run("negative/positive", runCase(opcode.DIV, -5, 2, -2))
t.Run("negative/negative", runCase(opcode.DIV, -5, -2, 2))
})
t.Run("MOD", func(t *testing.T) {
t.Run("positive/positive", runCase(opcode.MOD, 5, 2, 1))
t.Run("positive/negative", runCase(opcode.MOD, 5, -2, 1))
t.Run("negative/positive", runCase(opcode.MOD, -5, 2, -1))
t.Run("negative/negative", runCase(opcode.MOD, -5, -2, -1))
})
t.Run("SHR", func(t *testing.T) {
t.Run("positive/positive", runCase(opcode.SHR, 5, 2, 1))
t.Run("positive/negative", runCase(opcode.SHR, 5, -2, 20))
t.Run("negative/positive", runCase(opcode.SHR, -5, 2, -2))
t.Run("negative/negative", runCase(opcode.SHR, -5, -2, -20))
})
t.Run("SHL", func(t *testing.T) {
t.Run("positive/positive", runCase(opcode.SHL, 5, 2, 20))
t.Run("positive/negative", runCase(opcode.SHL, 5, -2, 1))
t.Run("negative/positive", runCase(opcode.SHL, -5, 2, -20))
t.Run("negative/negative", runCase(opcode.SHL, -5, -2, -2))
})
}
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 TestEQUALIntegerByteArray(t *testing.T) {
prog := makeProgram(opcode.EQUAL)
vm := load(prog)
vm.estack.PushVal([]byte{16})
vm.estack.PushVal(16)
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)
checkVMFailed(t, vm)
}
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().([]MapElement)
assert.Equal(t, 1, len(items))
assert.Equal(t, []byte{42}, items[0].Key.Value())
assert.Equal(t, big.NewInt(-1), items[0].Value.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)
}
// This test checks is SETITEM properly updates reference counter.
// 1. Create 2 arrays of size MaxArraySize - 3. (MaxStackSize = 2 * MaxArraySize)
// 2. SETITEM each of them to a map.
// 3. Replace each of them with a scalar value.
func TestSETITEMMapStackLimit(t *testing.T) {
size := MaxArraySize - 3
m := NewMapItem()
m.Add(NewBigIntegerItem(1), NewArrayItem(makeArrayOfFalses(size)))
m.Add(NewBigIntegerItem(2), NewArrayItem(makeArrayOfFalses(size)))
prog := makeProgram(
opcode.DUP, opcode.PUSH1, opcode.PUSH1, opcode.SETITEM,
opcode.DUP, opcode.PUSH2, opcode.PUSH2, opcode.SETITEM,
opcode.DUP, opcode.PUSH3, opcode.PUSH3, opcode.SETITEM,
opcode.DUP, opcode.PUSH4, opcode.PUSH4, opcode.SETITEM)
v := load(prog)
v.estack.PushVal(m)
runVM(t, v)
}
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{1, 2}
prog = append(prog, hash.BytesBE()...)
prog = append(prog, byte(opcode.RET))
vm := load(prog)
vm.SetScriptGetter(func(in util.Uint160) ([]byte, bool) {
if in.Equals(hash) {
return makeProgram(opcode.DEPTH), true
}
return nil, false
})
vm.estack.PushVal(2)
runVM(t, vm)
elem := vm.estack.Pop() // depth should be 1
assert.Equal(t, int64(1), elem.BigInt().Int64())
}
func TestAppCallDynamicBad(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, bool) {
if in.Equals(hash) {
return makeProgram(opcode.DEPTH), true
}
return nil, false
})
vm.estack.PushVal(2)
vm.estack.PushVal(hash.BytesBE())
checkVMFailed(t, vm)
}
func TestAppCallDynamicGood(t *testing.T) {
prog := []byte{byte(opcode.APPCALL)}
zeroHash := util.Uint160{}
hash := util.Uint160{1, 2, 3}
prog = append(prog, zeroHash.BytesBE()...)
prog = append(prog, byte(opcode.RET))
vm := load(prog)
vm.SetScriptGetter(func(in util.Uint160) ([]byte, bool) {
if in.Equals(hash) {
return makeProgram(opcode.DEPTH), true
}
return nil, false
})
vm.estack.PushVal(42)
vm.estack.PushVal(42)
vm.estack.PushVal(hash.BytesBE())
vm.Context().hasDynamicInvoke = true
runVM(t, vm)
elem := vm.estack.Pop() // depth should be 2
assert.Equal(t, int64(2), 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()))
}
var opcodesTestCases = map[opcode.Opcode][]struct {
name string
args []interface{}
expected interface{}
actual func(vm *VM) interface{}
}{
opcode.AND: {
{
name: "1_1",
args: []interface{}{1, 1},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "1_0",
args: []interface{}{1, 0},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_1",
args: []interface{}{0, 1},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_0",
args: []interface{}{0, 0},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "random_values",
args: []interface{}{
[]byte{1, 0, 1, 0, 1, 0, 1, 1},
[]byte{1, 1, 0, 0, 0, 0, 0, 1},
},
expected: []byte{1, 0, 0, 0, 0, 0, 0, 1},
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bytes()
},
},
},
opcode.OR: {
{
name: "1_1",
args: []interface{}{1, 1},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_0",
args: []interface{}{0, 0},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_1",
args: []interface{}{0, 1},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "1_0",
args: []interface{}{1, 0},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "random_values",
args: []interface{}{
[]byte{1, 0, 1, 0, 1, 0, 1, 1},
[]byte{1, 1, 0, 0, 0, 0, 0, 1},
},
expected: []byte{1, 1, 1, 0, 1, 0, 1, 1},
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bytes()
},
},
},
opcode.XOR: {
{
name: "1_1",
args: []interface{}{1, 1},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_0",
args: []interface{}{0, 0},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0_1",
args: []interface{}{0, 1},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "1_0",
args: []interface{}{1, 0},
expected: int64(1),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "random_values",
args: []interface{}{
[]byte{1, 0, 1, 0, 1, 0, 1, 1},
[]byte{1, 1, 0, 0, 0, 0, 0, 1},
},
expected: []byte{0, 1, 1, 0, 1, 0, 1},
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bytes()
},
},
},
opcode.BOOLOR: {
{
name: "1_1",
args: []interface{}{true, true},
expected: true,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
{
name: "0_0",
args: []interface{}{false, false},
expected: false,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
{
name: "0_1",
args: []interface{}{false, true},
expected: true,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
{
name: "1_0",
args: []interface{}{true, false},
expected: true,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
},
opcode.MIN: {
{
name: "3_5",
args: []interface{}{3, 5},
expected: int64(3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "5_3",
args: []interface{}{5, 3},
expected: int64(3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "3_3",
args: []interface{}{3, 3},
expected: int64(3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
},
opcode.MAX: {
{
name: "3_5",
args: []interface{}{3, 5},
expected: int64(5),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "5_3",
args: []interface{}{5, 3},
expected: int64(5),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "3_3",
args: []interface{}{3, 3},
expected: int64(3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
},
opcode.WITHIN: {
{
name: "within",
args: []interface{}{4, 3, 5},
expected: true,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
{
name: "less",
args: []interface{}{2, 3, 5},
expected: false,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
{
name: "more",
args: []interface{}{6, 3, 5},
expected: false,
actual: func(vm *VM) interface{} {
return vm.estack.Pop().Bool()
},
},
},
opcode.NEGATE: {
{
name: "3",
args: []interface{}{3},
expected: int64(-3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "-3",
args: []interface{}{-3},
expected: int64(3),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
{
name: "0",
args: []interface{}{0},
expected: int64(0),
actual: func(vm *VM) interface{} {
return vm.estack.Pop().BigInt().Int64()
},
},
},
}
func TestBitAndNumericOpcodes(t *testing.T) {
for code, opcodeTestCases := range opcodesTestCases {
t.Run(code.String(), func(t *testing.T) {
for _, testCase := range opcodeTestCases {
prog := makeProgram(code)
vm := load(prog)
t.Run(testCase.name, func(t *testing.T) {
for _, arg := range testCase.args {
vm.estack.PushVal(arg)
}
runVM(t, vm)
assert.Equal(t, testCase.expected, testCase.actual(vm))
})
}
})
}
}
var stackIsolationTestCases = map[opcode.Opcode][]struct {
name string
params []interface{}
}{
opcode.CALLE: {
{
name: "no_params",
},
{
name: "with_params",
params: []interface{}{big.NewInt(5), true, []byte{1, 2, 3}},
},
},
opcode.CALLED: {
{
name: "no_paranms",
},
{
name: "with_params",
params: []interface{}{big.NewInt(5), true, []byte{1, 2, 3}},
},
},
opcode.CALLET: {
{
name: "no_params",
},
{
name: "with_params",
params: []interface{}{big.NewInt(5), true, []byte{1, 2, 3}},
},
},
opcode.CALLEDT: {
{
name: "no_params",
},
{
name: "with_params",
params: []interface{}{big.NewInt(5), true, []byte{1, 2, 3}},
},
},
}
func TestStackIsolationOpcodes(t *testing.T) {
scriptHash := util.Uint160{1, 2, 3}
for code, codeTestCases := range stackIsolationTestCases {
t.Run(code.String(), func(t *testing.T) {
for _, testCase := range codeTestCases {
t.Run(testCase.name, func(t *testing.T) {
rvcount := len(testCase.params) + 1 // parameters + DEPTH
pcount := len(testCase.params)
prog := []byte{byte(code), byte(rvcount), byte(pcount)}
if code == opcode.CALLE || code == opcode.CALLET {
prog = append(prog, scriptHash.BytesBE()...)
}
prog = append(prog, byte(opcode.RET))
vm := load(prog)
vm.SetScriptGetter(func(in util.Uint160) ([]byte, bool) {
if in.Equals(scriptHash) {
return makeProgram(opcode.DEPTH), true
}
return nil, false
})
if code == opcode.CALLED || code == opcode.CALLEDT {
vm.Context().hasDynamicInvoke = true
}
if code == opcode.CALLET || code == opcode.CALLEDT {
vm.Context().rvcount = rvcount
}
// add extra parameter just to check that it won't appear on new estack
vm.estack.PushVal(7)
for _, param := range testCase.params {
vm.estack.PushVal(param)
}
if code == opcode.CALLED || code == opcode.CALLEDT {
vm.estack.PushVal(scriptHash.BytesBE())
}
runVM(t, vm)
elem := vm.estack.Pop() // depth should be equal to params count, as it's a separate execution context
assert.Equal(t, int64(pcount), elem.BigInt().Int64())
for i := pcount; i > 0; i-- {
p := vm.estack.Pop()
assert.Equal(t, testCase.params[i-1], p.value.Value())
}
})
}
})
}
}
func TestCALLIAltStack(t *testing.T) {
prog := []byte{
byte(opcode.PUSH1),
byte(opcode.DUP),
byte(opcode.TOALTSTACK),
byte(opcode.JMP), 0x5, 0, // to CALLI (+5 including JMP parameters)
byte(opcode.FROMALTSTACK), // altstack is empty, so panic here
byte(opcode.RET),
byte(opcode.CALLI), byte(0), byte(0), 0xfc, 0xff, // to FROMALTSTACK (-4) with clean stacks
byte(opcode.RET),
}
vm := load(prog)
checkVMFailed(t, vm)
}
func TestCALLIDEPTH(t *testing.T) {
prog := []byte{
byte(opcode.PUSH3),
byte(opcode.PUSH2),
byte(opcode.PUSH1),
byte(opcode.JMP), 0x5, 0, // to CALLI (+5 including JMP parameters)
byte(opcode.DEPTH), // depth is 2, put it on stack
byte(opcode.RET),
byte(opcode.CALLI), byte(3), byte(2), 0xfc, 0xff, // to DEPTH (-4) with [21 on stack
byte(opcode.RET),
}
vm := load(prog)
runVM(t, vm)
assert.Equal(t, 4, vm.estack.Len())
assert.Equal(t, int64(2), vm.estack.Pop().BigInt().Int64()) // depth was 2
for i := 1; i < 4; i++ {
assert.Equal(t, int64(i), vm.estack.Pop().BigInt().Int64())
}
}
func TestCALLI(t *testing.T) {
prog := []byte{
byte(opcode.PUSH3),
byte(opcode.PUSH2),
byte(opcode.PUSH1),
byte(opcode.JMP), 0x5, 0, // to CALLI (+5 including JMP parameters)
byte(opcode.SUB), // 2 - 1
byte(opcode.RET),
byte(opcode.CALLI), byte(1), byte(2), 0xfc, 0xff, // to SUB (-4) with [21 on stack
byte(opcode.MUL), // 3 * 1
byte(opcode.RET),
}
vm := load(prog)
runVM(t, vm)
assert.Equal(t, 1, vm.estack.Len())
assert.Equal(t, int64(3), vm.estack.Pop().BigInt().Int64())
}
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
}
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