mirror of
https://github.com/FlipsideCrypto/dcrd.git
synced 2026-02-06 19:06:51 +00:00
f5dc86e9cc
This removes the ScriptVerifyMinimalData flag from the txscript package, changes the default semantics to always enforce its behavior, and updates all callers in the repository accordingly. This change is being made to simplify the script engine code since the flag has always been active and required by consensus in Decred, so there is no need to require a flag to conditionally toggle it. It should be noted that the tests removed from script_tests.json specifically dealt with ensuring equivalency of different ways to encode the same numbers when the ScriptVerifyMinimalData flag is not set. Therefore, they are no longer necessary. A few tests which dealt with equivalency that did not already have expected failing counterparts were converted to expected failure. Also, several of the tests which dealt with ensuring the specific encoding of numeric opcodes is being used have been converted to use hashes since the minimal data requirements specifically prevent alternate ways of pushing the same encoding which is necessary for directly checking equality of the raw bytes. Finally, the MINIMALDATA indicator to enable the flag in the test data has been retained for now in order to isolate the logic changes as much as possible.
932 lines
16 KiB
Go
932 lines
16 KiB
Go
// Copyright (c) 2013-2017 The btcsuite developers
|
|
// Copyright (c) 2015-2018 The Decred developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package txscript
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"testing"
|
|
)
|
|
|
|
// tstCheckScriptError ensures the type of the two passed errors are of the
|
|
// same type (either both nil or both of type Error) and their error codes
|
|
// match when not nil.
|
|
func tstCheckScriptError(gotErr, wantErr error) error {
|
|
// Ensure the error code is of the expected type and the error
|
|
// code matches the value specified in the test instance.
|
|
if reflect.TypeOf(gotErr) != reflect.TypeOf(wantErr) {
|
|
return fmt.Errorf("wrong error - got %T (%[1]v), want %T",
|
|
gotErr, wantErr)
|
|
}
|
|
if gotErr == nil {
|
|
return nil
|
|
}
|
|
|
|
// Ensure the want error type is a script error.
|
|
werr, ok := wantErr.(Error)
|
|
if !ok {
|
|
return fmt.Errorf("unexpected test error type %T", wantErr)
|
|
}
|
|
|
|
// Ensure the error codes match. It's safe to use a raw type assert
|
|
// here since the code above already proved they are the same type and
|
|
// the want error is a script error.
|
|
gotErrorCode := gotErr.(Error).ErrorCode
|
|
if gotErrorCode != werr.ErrorCode {
|
|
return fmt.Errorf("mismatched error code - got %v (%v), want %v",
|
|
gotErrorCode, gotErr, werr.ErrorCode)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// TestStack tests that all of the stack operations work as expected.
|
|
func TestStack(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
tests := []struct {
|
|
name string
|
|
before [][]byte
|
|
operation func(*stack) error
|
|
err error
|
|
after [][]byte
|
|
}{
|
|
{
|
|
"noop",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
},
|
|
{
|
|
"peek underflow (byte)",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
_, err := s.PeekByteArray(5)
|
|
return err
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"peek underflow (int)",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
_, err := s.PeekInt(5)
|
|
return err
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"peek underflow (bool)",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
_, err := s.PeekBool(5)
|
|
return err
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"pop",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
val, err := s.PopByteArray()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !bytes.Equal(val, []byte{5}) {
|
|
return errors.New("not equal")
|
|
}
|
|
return err
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
},
|
|
{
|
|
"pop everything",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
for i := 0; i < 5; i++ {
|
|
_, err := s.PopByteArray()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"pop underflow",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
|
func(s *stack) error {
|
|
for i := 0; i < 6; i++ {
|
|
_, err := s.PopByteArray()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"pop bool",
|
|
[][]byte{nil},
|
|
func(s *stack) error {
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"pop bool",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"pop bool",
|
|
nil,
|
|
func(s *stack) error {
|
|
_, err := s.PopBool()
|
|
return err
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"popInt 0",
|
|
[][]byte{nil},
|
|
func(s *stack) error {
|
|
v, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if v != 0 {
|
|
return errors.New("0 != 0 on PopInt")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"non-minimal popInt 0",
|
|
[][]byte{{0x0}},
|
|
func(s *stack) error {
|
|
_, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
return err
|
|
},
|
|
scriptError(ErrMinimalData, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"non-minimal popInt -0",
|
|
[][]byte{{0x80}},
|
|
func(s *stack) error {
|
|
_, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
return err
|
|
},
|
|
scriptError(ErrMinimalData, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"popInt 1",
|
|
[][]byte{{0x01}},
|
|
func(s *stack) error {
|
|
v, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if v != 1 {
|
|
return errors.New("1 != 1 on PopInt")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"non-minal popInt 1 leading 0",
|
|
[][]byte{{0x01, 0x00, 0x00, 0x00}},
|
|
func(s *stack) error {
|
|
_, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
return err
|
|
},
|
|
scriptError(ErrMinimalData, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"popInt -1",
|
|
[][]byte{{0x81}},
|
|
func(s *stack) error {
|
|
v, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if v != -1 {
|
|
return errors.New("-1 != -1 on PopInt")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
// Triggers the multibyte case in asInt
|
|
{
|
|
"popInt -513",
|
|
[][]byte{{0x1, 0x82}},
|
|
func(s *stack) error {
|
|
v, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if v != -513 {
|
|
fmt.Printf("%v != %v\n", v, -513)
|
|
return errors.New("1 != 1 on PopInt")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
// Confirm that the asInt code doesn't modify the base data.
|
|
{
|
|
"peekint nomodify -1",
|
|
[][]byte{{0x81}},
|
|
func(s *stack) error {
|
|
v, err := s.PeekInt(0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if v != -1 {
|
|
fmt.Printf("%v != %v\n", v, -1)
|
|
return errors.New("-1 != -1 on PeekInt")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{0x81}},
|
|
},
|
|
{
|
|
"PushInt 0",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(0))
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{}},
|
|
},
|
|
{
|
|
"PushInt 1",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(1))
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{0x1}},
|
|
},
|
|
{
|
|
"PushInt -1",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(-1))
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{0x81}},
|
|
},
|
|
{
|
|
"PushInt two bytes",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(256))
|
|
return nil
|
|
},
|
|
nil,
|
|
// little endian.. *sigh*
|
|
[][]byte{{0x00, 0x01}},
|
|
},
|
|
{
|
|
"PushInt leading zeros",
|
|
nil,
|
|
func(s *stack) error {
|
|
// this will have the highbit set
|
|
s.PushInt(scriptNum(128))
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{0x80, 0x00}},
|
|
},
|
|
{
|
|
"dup",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.DupN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {1}},
|
|
},
|
|
{
|
|
"dup2",
|
|
[][]byte{{1}, {2}},
|
|
func(s *stack) error {
|
|
return s.DupN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {1}, {2}},
|
|
},
|
|
{
|
|
"dup3",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.DupN(3)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {1}, {2}, {3}},
|
|
},
|
|
{
|
|
"dup0",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.DupN(0)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"dup-1",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.DupN(-1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"dup too much",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.DupN(2)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"PushBool true",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushBool(true)
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{1}},
|
|
},
|
|
{
|
|
"PushBool false",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushBool(false)
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{nil},
|
|
},
|
|
{
|
|
"PushBool PopBool",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushBool(true)
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"PushBool PopBool 2",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushBool(false)
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"PushInt PopBool",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(1))
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"PushInt PopBool 2",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(0))
|
|
val, err := s.PopBool()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val {
|
|
return errors.New("unexpected value")
|
|
}
|
|
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"Nip top",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.NipN(0)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}},
|
|
},
|
|
{
|
|
"Nip middle",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.NipN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {3}},
|
|
},
|
|
{
|
|
"Nip low",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.NipN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{2}, {3}},
|
|
},
|
|
{
|
|
"Nip too much",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
// bite off more than we can chew
|
|
return s.NipN(3)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
[][]byte{{2}, {3}},
|
|
},
|
|
{
|
|
"keep on tucking",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.Tuck()
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {3}, {2}, {3}},
|
|
},
|
|
{
|
|
"a little tucked up",
|
|
[][]byte{{1}}, // too few arguments for tuck
|
|
func(s *stack) error {
|
|
return s.Tuck()
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"all tucked up",
|
|
nil, // too few arguments for tuck
|
|
func(s *stack) error {
|
|
return s.Tuck()
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"drop 1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}},
|
|
},
|
|
{
|
|
"drop 2",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}},
|
|
},
|
|
{
|
|
"drop 3",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(3)
|
|
},
|
|
nil,
|
|
[][]byte{{1}},
|
|
},
|
|
{
|
|
"drop 4",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(4)
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"drop 4/5",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(5)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"drop invalid",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.DropN(0)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Rot1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.RotN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {3}, {4}, {2}},
|
|
},
|
|
{
|
|
"Rot2",
|
|
[][]byte{{1}, {2}, {3}, {4}, {5}, {6}},
|
|
func(s *stack) error {
|
|
return s.RotN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{3}, {4}, {5}, {6}, {1}, {2}},
|
|
},
|
|
{
|
|
"Rot too little",
|
|
[][]byte{{1}, {2}},
|
|
func(s *stack) error {
|
|
return s.RotN(1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Rot0",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.RotN(0)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Swap1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.SwapN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {4}, {3}},
|
|
},
|
|
{
|
|
"Swap2",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.SwapN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{3}, {4}, {1}, {2}},
|
|
},
|
|
{
|
|
"Swap too little",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.SwapN(1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Swap0",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.SwapN(0)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Over1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.OverN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}, {3}},
|
|
},
|
|
{
|
|
"Over2",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.OverN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}, {1}, {2}},
|
|
},
|
|
{
|
|
"Over too little",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.OverN(1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Over0",
|
|
[][]byte{{1}, {2}, {3}},
|
|
func(s *stack) error {
|
|
return s.OverN(0)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Pick1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.PickN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}, {3}},
|
|
},
|
|
{
|
|
"Pick2",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.PickN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {3}, {4}, {2}},
|
|
},
|
|
{
|
|
"Pick too little",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.PickN(1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Roll1",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.RollN(1)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {2}, {4}, {3}},
|
|
},
|
|
{
|
|
"Roll2",
|
|
[][]byte{{1}, {2}, {3}, {4}},
|
|
func(s *stack) error {
|
|
return s.RollN(2)
|
|
},
|
|
nil,
|
|
[][]byte{{1}, {3}, {4}, {2}},
|
|
},
|
|
{
|
|
"Roll too little",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
return s.RollN(1)
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
{
|
|
"Peek bool",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
// Peek bool is otherwise pretty well tested,
|
|
// just check it works.
|
|
val, err := s.PeekBool(0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !val {
|
|
return errors.New("invalid result")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{1}},
|
|
},
|
|
{
|
|
"Peek bool 2",
|
|
[][]byte{nil},
|
|
func(s *stack) error {
|
|
// Peek bool is otherwise pretty well tested,
|
|
// just check it works.
|
|
val, err := s.PeekBool(0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val {
|
|
return errors.New("invalid result")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{nil},
|
|
},
|
|
{
|
|
"Peek int",
|
|
[][]byte{{1}},
|
|
func(s *stack) error {
|
|
// Peek int is otherwise pretty well tested,
|
|
// just check it works.
|
|
val, err := s.PeekInt(0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val != 1 {
|
|
return errors.New("invalid result")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{{1}},
|
|
},
|
|
{
|
|
"Peek int 2",
|
|
[][]byte{nil},
|
|
func(s *stack) error {
|
|
// Peek int is otherwise pretty well tested,
|
|
// just check it works.
|
|
val, err := s.PeekInt(0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val != 0 {
|
|
return errors.New("invalid result")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
[][]byte{nil},
|
|
},
|
|
{
|
|
"pop int",
|
|
nil,
|
|
func(s *stack) error {
|
|
s.PushInt(scriptNum(1))
|
|
// Peek int is otherwise pretty well tested,
|
|
// just check it works.
|
|
val, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if val != 1 {
|
|
return errors.New("invalid result")
|
|
}
|
|
return nil
|
|
},
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"pop empty",
|
|
nil,
|
|
func(s *stack) error {
|
|
// Peek int is otherwise pretty well tested,
|
|
// just check it works.
|
|
_, err := s.PopInt(mathOpCodeMaxScriptNumLen)
|
|
return err
|
|
},
|
|
scriptError(ErrInvalidStackOperation, ""),
|
|
nil,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
// Setup the initial stack state and perform the test operation.
|
|
s := stack{}
|
|
for i := range test.before {
|
|
s.PushByteArray(test.before[i])
|
|
}
|
|
err := test.operation(&s)
|
|
|
|
// Ensure the error code is of the expected type and the error
|
|
// code matches the value specified in the test instance.
|
|
if e := tstCheckScriptError(err, test.err); e != nil {
|
|
t.Errorf("%s: %v", test.name, e)
|
|
continue
|
|
}
|
|
if err != nil {
|
|
continue
|
|
}
|
|
|
|
// Ensure the resulting stack is the expected length.
|
|
if int32(len(test.after)) != s.Depth() {
|
|
t.Errorf("%s: stack depth doesn't match expected: %v "+
|
|
"vs %v", test.name, len(test.after),
|
|
s.Depth())
|
|
continue
|
|
}
|
|
|
|
// Ensure all items of the resulting stack are the expected
|
|
// values.
|
|
for i := range test.after {
|
|
val, err := s.PeekByteArray(s.Depth() - int32(i) - 1)
|
|
if err != nil {
|
|
t.Errorf("%s: can't peek %dth stack entry: %v",
|
|
test.name, i, err)
|
|
break
|
|
}
|
|
|
|
if !bytes.Equal(val, test.after[i]) {
|
|
t.Errorf("%s: %dth stack entry doesn't match "+
|
|
"expected: %v vs %v", test.name, i, val,
|
|
test.after[i])
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|