neoneo-go/pkg/core/transaction/witness_condition_test.go

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package transaction
import (
"encoding/json"
"errors"
"testing"
"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/stackitem"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type InvalidCondition struct{}
func (c InvalidCondition) Type() WitnessConditionType {
return 0xff
}
func (c InvalidCondition) Match(_ MatchContext) (bool, error) {
return true, nil
}
func (c InvalidCondition) EncodeBinary(w *io.BinWriter) {
w.WriteB(byte(c.Type()))
}
func (c InvalidCondition) DecodeBinarySpecific(r *io.BinReader, _ int) {
}
func (c InvalidCondition) MarshalJSON() ([]byte, error) {
aux := conditionAux{
Type: c.Type().String(),
}
return json.Marshal(aux)
}
func (c InvalidCondition) ToStackItem() stackitem.Item {
panic("invalid")
}
type condCase struct {
condition WitnessCondition
success bool
expectedStackItem []stackitem.Item
}
func TestWitnessConditionSerDes(t *testing.T) {
var someBool bool
pk, err := keys.NewPrivateKey()
require.NoError(t, err)
var cases = []condCase{
{(*ConditionBoolean)(&someBool), true, []stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)}},
{&ConditionNot{(*ConditionBoolean)(&someBool)}, true, []stackitem.Item{stackitem.Make(WitnessNot), stackitem.NewArray([]stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)})}},
{&ConditionAnd{(*ConditionBoolean)(&someBool), (*ConditionBoolean)(&someBool)}, true, []stackitem.Item{stackitem.Make(WitnessAnd), stackitem.Make([]stackitem.Item{
stackitem.NewArray([]stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)}),
stackitem.NewArray([]stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)}),
})}},
{&ConditionOr{(*ConditionBoolean)(&someBool), (*ConditionBoolean)(&someBool)}, true, []stackitem.Item{stackitem.Make(WitnessOr), stackitem.Make([]stackitem.Item{
stackitem.NewArray([]stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)}),
stackitem.NewArray([]stackitem.Item{stackitem.Make(WitnessBoolean), stackitem.Make(someBool)}),
})}},
{&ConditionScriptHash{1, 2, 3}, true, []stackitem.Item{stackitem.Make(WitnessScriptHash), stackitem.Make(util.Uint160{1, 2, 3}.BytesBE())}},
{(*ConditionGroup)(pk.PublicKey()), true, []stackitem.Item{stackitem.Make(WitnessGroup), stackitem.Make(pk.PublicKey().Bytes())}},
{ConditionCalledByEntry{}, true, []stackitem.Item{stackitem.Make(WitnessCalledByEntry)}},
{&ConditionCalledByContract{1, 2, 3}, true, []stackitem.Item{stackitem.Make(WitnessCalledByContract), stackitem.Make(util.Uint160{1, 2, 3}.BytesBE())}},
{(*ConditionCalledByGroup)(pk.PublicKey()), true, []stackitem.Item{stackitem.Make(WitnessCalledByGroup), stackitem.Make(pk.PublicKey().Bytes())}},
{InvalidCondition{}, false, nil},
{&ConditionAnd{}, false, nil},
{&ConditionOr{}, false, nil},
{&ConditionNot{&ConditionNot{&ConditionNot{(*ConditionBoolean)(&someBool)}}}, false, nil},
}
var maxSubCondAnd = &ConditionAnd{}
var maxSubCondOr = &ConditionAnd{}
for i := 0; i < maxSubitems+1; i++ {
*maxSubCondAnd = append(*maxSubCondAnd, (*ConditionBoolean)(&someBool))
*maxSubCondOr = append(*maxSubCondOr, (*ConditionBoolean)(&someBool))
}
cases = append(cases, condCase{maxSubCondAnd, false, nil})
cases = append(cases, condCase{maxSubCondOr, false, nil})
t.Run("binary", func(t *testing.T) {
for i, c := range cases {
w := io.NewBufBinWriter()
c.condition.EncodeBinary(w.BinWriter)
require.NoError(t, w.Err)
b := w.Bytes()
r := io.NewBinReaderFromBuf(b)
res := DecodeBinaryCondition(r)
if !c.success {
require.Nil(t, res)
require.Errorf(t, r.Err, "case %d", i)
continue
}
require.NoErrorf(t, r.Err, "case %d", i)
require.Equal(t, c.condition, res)
}
})
t.Run("json", func(t *testing.T) {
for i, c := range cases {
jj, err := c.condition.MarshalJSON()
require.NoError(t, err)
res, err := UnmarshalConditionJSON(jj)
if !c.success {
require.Errorf(t, err, "case %d, json %s", i, jj)
continue
}
require.NoErrorf(t, err, "case %d, json %s", i, jj)
require.Equal(t, c.condition, res)
}
})
t.Run("stackitem", func(t *testing.T) {
for i, c := range cases[1:] {
if c.expectedStackItem != nil {
expected := stackitem.NewArray(c.expectedStackItem)
actual := c.condition.ToStackItem()
assert.Equal(t, expected, actual, i)
}
}
})
}
func TestWitnessConditionZeroDeser(t *testing.T) {
r := io.NewBinReaderFromBuf([]byte{})
res := DecodeBinaryCondition(r)
require.Nil(t, res)
require.Error(t, r.Err)
}
func TestWitnessConditionJSONErrors(t *testing.T) {
var cases = []string{
`[]`,
`{}`,
`{"type":"Boolean"}`,
`{"type":"Not"}`,
`{"type":"And"}`,
`{"type":"Or"}`,
`{"type":"ScriptHash"}`,
`{"type":"Group"}`,
`{"type":"CalledByContract"}`,
`{"type":"CalledByGroup"}`,
`{"type":"Boolean", "expression":42}`,
`{"type":"Not", "expression":true}`,
`{"type":"And", "expressions":[{"type":"CalledByGroup"},{"type":"Not", "expression":true}]}`,
`{"type":"Or", "expressions":{"type":"CalledByGroup"}}`,
`{"type":"Or", "expressions":[{"type":"CalledByGroup"},{"type":"Not", "expression":false}]}`,
`{"type":"ScriptHash", "hash":"1122"}`,
`{"type":"Group", "group":"032211"}`,
`{"type":"CalledByContract", "hash":"1122"}`,
`{"type":"CalledByGroup", "group":"032211"}`,
}
for i := range cases {
res, err := UnmarshalConditionJSON([]byte(cases[i]))
require.Errorf(t, err, "case %d, json %s", i, cases[i])
require.Nil(t, res)
}
}
type TestMC struct {
calling util.Uint160
current util.Uint160
entry util.Uint160
goodKey *keys.PublicKey
badKey *keys.PublicKey
}
func (t *TestMC) GetCallingScriptHash() util.Uint160 {
return t.calling
}
func (t *TestMC) GetCurrentScriptHash() util.Uint160 {
return t.current
}
func (t *TestMC) GetEntryScriptHash() util.Uint160 {
return t.entry
}
func (t *TestMC) IsCalledByEntry() bool {
return t.entry.Equals(t.calling) || t.calling.Equals(util.Uint160{})
}
func (t *TestMC) CallingScriptHasGroup(k *keys.PublicKey) (bool, error) {
res, err := t.CurrentScriptHasGroup(k)
return !res, err // To differentiate from current we invert the logic value.
}
func (t *TestMC) CurrentScriptHasGroup(k *keys.PublicKey) (bool, error) {
if k.Equal(t.goodKey) {
return true, nil
}
if k.Equal(t.badKey) {
return false, errors.New("baaad key")
}
return false, nil
}
func TestWitnessConditionMatch(t *testing.T) {
pkGood, err := keys.NewPrivateKey()
require.NoError(t, err)
pkBad, err := keys.NewPrivateKey()
require.NoError(t, err)
pkNeutral, err := keys.NewPrivateKey()
require.NoError(t, err)
entrySC := util.Uint160{1, 2, 3}
currentSC := util.Uint160{4, 5, 6}
tmc := &TestMC{
calling: entrySC,
entry: entrySC,
current: currentSC,
goodKey: pkGood.PublicKey(),
badKey: pkBad.PublicKey(),
}
t.Run("boolean", func(t *testing.T) {
var b bool
var c = (*ConditionBoolean)(&b)
res, err := c.Match(tmc)
require.NoError(t, err)
require.False(t, res)
b = true
res, err = c.Match(tmc)
require.NoError(t, err)
require.True(t, res)
})
t.Run("not", func(t *testing.T) {
var b bool
var cInner = (*ConditionBoolean)(&b)
var cInner2 = (*ConditionGroup)(pkBad.PublicKey())
var c = &ConditionNot{cInner}
var c2 = &ConditionNot{cInner2}
res, err := c.Match(tmc)
require.NoError(t, err)
require.True(t, res)
b = true
res, err = c.Match(tmc)
require.NoError(t, err)
require.False(t, res)
_, err = c2.Match(tmc)
require.Error(t, err)
})
t.Run("and", func(t *testing.T) {
var bFalse, bTrue bool
var cInnerFalse = (*ConditionBoolean)(&bFalse)
var cInnerTrue = (*ConditionBoolean)(&bTrue)
var cInnerBad = (*ConditionGroup)(pkBad.PublicKey())
var c = &ConditionAnd{cInnerTrue, cInnerFalse, cInnerFalse}
var cBad = &ConditionAnd{cInnerTrue, cInnerBad}
bTrue = true
res, err := c.Match(tmc)
require.NoError(t, err)
require.False(t, res)
bFalse = true
res, err = c.Match(tmc)
require.NoError(t, err)
require.True(t, res)
_, err = cBad.Match(tmc)
require.Error(t, err)
})
t.Run("or", func(t *testing.T) {
var bFalse, bTrue bool
var cInnerFalse = (*ConditionBoolean)(&bFalse)
var cInnerTrue = (*ConditionBoolean)(&bTrue)
var cInnerBad = (*ConditionGroup)(pkBad.PublicKey())
var c = &ConditionOr{cInnerTrue, cInnerFalse, cInnerFalse}
var cBad = &ConditionOr{cInnerTrue, cInnerBad}
bTrue = true
res, err := c.Match(tmc)
require.NoError(t, err)
require.True(t, res)
bTrue = false
res, err = c.Match(tmc)
require.NoError(t, err)
require.False(t, res)
_, err = cBad.Match(tmc)
require.Error(t, err)
})
t.Run("script hash", func(t *testing.T) {
var cEntry = (*ConditionScriptHash)(&entrySC)
var cCurrent = (*ConditionScriptHash)(&currentSC)
res, err := cEntry.Match(tmc)
require.NoError(t, err)
require.False(t, res)
res, err = cCurrent.Match(tmc)
require.NoError(t, err)
require.True(t, res)
})
t.Run("group", func(t *testing.T) {
var cBad = (*ConditionGroup)(pkBad.PublicKey())
var cGood = (*ConditionGroup)(pkGood.PublicKey())
var cNeutral = (*ConditionGroup)(pkNeutral.PublicKey())
res, err := cGood.Match(tmc)
require.NoError(t, err)
require.True(t, res)
res, err = cNeutral.Match(tmc)
require.NoError(t, err)
require.False(t, res)
_, err = cBad.Match(tmc)
require.Error(t, err)
})
t.Run("called by entry", func(t *testing.T) {
var c = ConditionCalledByEntry{}
res, err := c.Match(tmc)
require.NoError(t, err)
require.True(t, res)
tmc2 := *tmc
tmc2.entry = util.Uint160{0, 9, 8}
res, err = c.Match(&tmc2)
require.NoError(t, err)
require.False(t, res)
tmc3 := *tmc
tmc3.calling = util.Uint160{}
tmc3.current = tmc3.entry
res, err = c.Match(&tmc3)
require.NoError(t, err)
require.True(t, res)
})
t.Run("called by contract", func(t *testing.T) {
var cEntry = (*ConditionCalledByContract)(&entrySC)
var cCurrent = (*ConditionCalledByContract)(&currentSC)
res, err := cEntry.Match(tmc)
require.NoError(t, err)
require.True(t, res)
res, err = cCurrent.Match(tmc)
require.NoError(t, err)
require.False(t, res)
})
t.Run("called by group", func(t *testing.T) {
var cBad = (*ConditionCalledByGroup)(pkBad.PublicKey())
var cGood = (*ConditionCalledByGroup)(pkGood.PublicKey())
var cNeutral = (*ConditionCalledByGroup)(pkNeutral.PublicKey())
res, err := cGood.Match(tmc)
require.NoError(t, err)
require.False(t, res)
res, err = cNeutral.Match(tmc)
require.NoError(t, err)
require.True(t, res)
_, err = cBad.Match(tmc)
require.Error(t, err)
})
}