github.com/core-coin/go-core/v2@v2.1.9/core/asm/asm_test.go (about)

     1  // Copyright 2017 by the Authors
     2  // This file is part of the go-core library.
     3  //
     4  // The go-core library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-core library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-core library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package asm
    18  
    19  import (
    20  	"encoding/hex"
    21  	"testing"
    22  )
    23  
    24  // Tests disassembling the instructions for valid cvm code
    25  func TestInstructionIteratorValid(t *testing.T) {
    26  	cnt := 0
    27  	script, _ := hex.DecodeString("61000000")
    28  
    29  	it := NewInstructionIterator(script)
    30  	for it.Next() {
    31  		cnt++
    32  	}
    33  
    34  	if err := it.Error(); err != nil {
    35  		t.Errorf("Expected 2, but encountered error %v instead.", err)
    36  	}
    37  	if cnt != 2 {
    38  		t.Errorf("Expected 2, but got %v instead.", cnt)
    39  	}
    40  }
    41  
    42  // Tests disassembling the instructions for invalid cvm code
    43  func TestInstructionIteratorInvalid(t *testing.T) {
    44  	cnt := 0
    45  	script, _ := hex.DecodeString("6100")
    46  
    47  	it := NewInstructionIterator(script)
    48  	for it.Next() {
    49  		cnt++
    50  	}
    51  
    52  	if it.Error() == nil {
    53  		t.Errorf("Expected an error, but got %v instead.", cnt)
    54  	}
    55  }
    56  
    57  // Tests disassembling the instructions for empty cvm code
    58  func TestInstructionIteratorEmpty(t *testing.T) {
    59  	cnt := 0
    60  	script, _ := hex.DecodeString("")
    61  
    62  	it := NewInstructionIterator(script)
    63  	for it.Next() {
    64  		cnt++
    65  	}
    66  
    67  	if err := it.Error(); err != nil {
    68  		t.Errorf("Expected 0, but encountered error %v instead.", err)
    69  	}
    70  	if cnt != 0 {
    71  		t.Errorf("Expected 0, but got %v instead.", cnt)
    72  	}
    73  }