github.com/n1ghtfa1l/go-vnt@v0.6.4-alpha.6/core/wavm/utils/uitis_test.go (about)

     1  // Copyright 2019 The go-vnt Authors
     2  // This file is part of the go-vnt library.
     3  //
     4  // The go-vnt 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-vnt 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-vnt library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package utils_test
    18  
    19  import (
    20  	"bytes"
    21  	"math/big"
    22  	"testing"
    23  
    24  	"github.com/vntchain/go-vnt/core/wavm/utils"
    25  )
    26  
    27  func TestSplit(t *testing.T) {
    28  	teststr := []byte("111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111")
    29  	n, res := utils.Split(teststr)
    30  	testres := []byte{}
    31  	for i := 0; i < n; i++ {
    32  		testres = append(testres, res[i]...)
    33  	}
    34  
    35  	if !bytes.Equal(teststr, new(big.Int).SetBytes(testres).Bytes()) {
    36  		t.Errorf("want %s | get %s", teststr, new(big.Int).SetBytes(testres).Bytes())
    37  	}
    38  }
    39  
    40  func TestGetU256(t *testing.T) {
    41  
    42  	var mem []byte
    43  	bigint := utils.GetU256(mem)
    44  	if bigint.String() != "0" {
    45  		t.Fatalf("want %s |get %s", "0", bigint.String())
    46  	}
    47  
    48  	mem = []byte(nil)
    49  	bigint = utils.GetU256(mem)
    50  	if bigint.String() != "0" {
    51  		t.Fatalf("want %s |get %s", "0", bigint.String())
    52  	}
    53  
    54  	mem = []byte{}
    55  	bigint = utils.GetU256(mem)
    56  	if bigint.String() != "0" {
    57  		t.Fatalf("want %s |get %s", "0", bigint.String())
    58  	}
    59  
    60  	mem = []byte("111111111")
    61  	bigint = utils.GetU256(mem)
    62  	if bigint.String() != "111111111" {
    63  		t.Fatalf("want %s |get %s", "111111111", bigint.String())
    64  	}
    65  
    66  }