github.com/ethereum/go-ethereum@v1.14.4-0.20240516095835-473ee8fc07a3/cmd/rlpdump/rlpdump_test.go (about)

     1  // Copyright 2021 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // go-ethereum is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU 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  // go-ethereum 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 General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"bytes"
    21  	"fmt"
    22  	"strings"
    23  	"testing"
    24  
    25  	"github.com/ethereum/go-ethereum/common"
    26  	"github.com/ethereum/go-ethereum/common/hexutil"
    27  )
    28  
    29  func TestRoundtrip(t *testing.T) {
    30  	t.Parallel()
    31  	for i, want := range []string{
    32  		"0xf880806482520894d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0a1010000000000000000000000000000000000000000000000000000000000000001801ba0c16787a8e25e941d67691954642876c08f00996163ae7dfadbbfd6cd436f549da06180e5626cae31590f40641fe8f63734316c4bfeb4cdfab6714198c1044d2e28",
    33  		"0xd5c0d3cb84746573742a2a808213378667617a6f6e6b",
    34  		"0xc780c0c1c0825208",
    35  	} {
    36  		var out strings.Builder
    37  		in := newInStream(bytes.NewReader(common.FromHex(want)), 0)
    38  		err := rlpToText(in, &out)
    39  		if err != nil {
    40  			t.Fatal(err)
    41  		}
    42  		text := out.String()
    43  		rlpBytes, err := textToRlp(strings.NewReader(text))
    44  		if err != nil {
    45  			t.Errorf("test %d: error %v", i, err)
    46  			continue
    47  		}
    48  		have := fmt.Sprintf("%#x", rlpBytes)
    49  		if have != want {
    50  			t.Errorf("test %d: have\n%v\nwant:\n%v\n", i, have, want)
    51  		}
    52  	}
    53  }
    54  
    55  func TestTextToRlp(t *testing.T) {
    56  	t.Parallel()
    57  	type tc struct {
    58  		text string
    59  		want string
    60  	}
    61  	cases := []tc{
    62  		{
    63  			text: `[
    64    "",
    65    [],
    66  [     
    67   [],
    68      ],
    69    5208,
    70  ]`,
    71  			want: "0xc780c0c1c0825208",
    72  		},
    73  	}
    74  	for i, tc := range cases {
    75  		have, err := textToRlp(strings.NewReader(tc.text))
    76  		if err != nil {
    77  			t.Errorf("test %d: error %v", i, err)
    78  			continue
    79  		}
    80  		if hexutil.Encode(have) != tc.want {
    81  			t.Errorf("test %d:\nhave %v\nwant %v", i, hexutil.Encode(have), tc.want)
    82  		}
    83  	}
    84  }