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- // Copyright 2017 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- package asm
- import (
- "testing"
- "encoding/hex"
- )
- // Tests disassembling the instructions for valid evm code
- func TestInstructionIteratorValid(t *testing.T) {
- cnt := 0
- script, _ := hex.DecodeString("61000000")
- it := NewInstructionIterator(script)
- for it.Next() {
- cnt++
- }
- if err := it.Error(); err != nil {
- t.Errorf("Expected 2, but encountered error %v instead.", err)
- }
- if cnt != 2 {
- t.Errorf("Expected 2, but got %v instead.", cnt)
- }
- }
- // Tests disassembling the instructions for invalid evm code
- func TestInstructionIteratorInvalid(t *testing.T) {
- cnt := 0
- script, _ := hex.DecodeString("6100")
- it := NewInstructionIterator(script)
- for it.Next() {
- cnt++
- }
- if it.Error() == nil {
- t.Errorf("Expected an error, but got %v instead.", cnt)
- }
- }
- // Tests disassembling the instructions for empty evm code
- func TestInstructionIteratorEmpty(t *testing.T) {
- cnt := 0
- script, _ := hex.DecodeString("")
- it := NewInstructionIterator(script)
- for it.Next() {
- cnt++
- }
- if err := it.Error(); err != nil {
- t.Errorf("Expected 0, but encountered error %v instead.", err)
- }
- if cnt != 0 {
- t.Errorf("Expected 0, but got %v instead.", cnt)
- }
- }
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