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