github.com/bcnmy/go-ethereum@v1.10.27/eth/protocols/snap/sort_test.go (about)

     1  // Copyright 2022 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum 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-ethereum 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-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package snap
    18  
    19  import (
    20  	"bytes"
    21  	"fmt"
    22  	"testing"
    23  
    24  	"github.com/ethereum/go-ethereum/common"
    25  )
    26  
    27  func hexToNibbles(s string) []byte {
    28  	if len(s) >= 2 && s[0] == '0' && s[1] == 'x' {
    29  		s = s[2:]
    30  	}
    31  	var s2 []byte
    32  	for _, ch := range []byte(s) {
    33  		s2 = append(s2, '0')
    34  		s2 = append(s2, ch)
    35  	}
    36  	return common.Hex2Bytes(string(s2))
    37  }
    38  
    39  func TestRequestSorting(t *testing.T) {
    40  	//   - Path 0x9  -> {0x19}
    41  	//   - Path 0x99 -> {0x0099}
    42  	//   - Path 0x01234567890123456789012345678901012345678901234567890123456789019  -> {0x0123456789012345678901234567890101234567890123456789012345678901, 0x19}
    43  	//   - Path 0x012345678901234567890123456789010123456789012345678901234567890199 -> {0x0123456789012345678901234567890101234567890123456789012345678901, 0x0099}
    44  	var f = func(path string) string {
    45  		data := hexToNibbles(path)
    46  		return string(data)
    47  	}
    48  	var (
    49  		hashes []common.Hash
    50  		paths  []string
    51  	)
    52  	for _, x := range []string{
    53  		"0x9",
    54  		"0x012345678901234567890123456789010123456789012345678901234567890195",
    55  		"0x012345678901234567890123456789010123456789012345678901234567890197",
    56  		"0x012345678901234567890123456789010123456789012345678901234567890196",
    57  		"0x99",
    58  		"0x012345678901234567890123456789010123456789012345678901234567890199",
    59  		"0x01234567890123456789012345678901012345678901234567890123456789019",
    60  		"0x0123456789012345678901234567890101234567890123456789012345678901",
    61  		"0x01234567890123456789012345678901012345678901234567890123456789010",
    62  		"0x01234567890123456789012345678901012345678901234567890123456789011",
    63  	} {
    64  		paths = append(paths, f(x))
    65  		hashes = append(hashes, common.Hash{})
    66  	}
    67  	_, _, syncPaths, pathsets := sortByAccountPath(paths, hashes)
    68  	{
    69  		var b = new(bytes.Buffer)
    70  		for i := 0; i < len(syncPaths); i++ {
    71  			fmt.Fprintf(b, "\n%d. paths %x", i, syncPaths[i])
    72  		}
    73  		want := `
    74  0. paths [0099]
    75  1. paths [0123456789012345678901234567890101234567890123456789012345678901 00]
    76  2. paths [0123456789012345678901234567890101234567890123456789012345678901 0095]
    77  3. paths [0123456789012345678901234567890101234567890123456789012345678901 0096]
    78  4. paths [0123456789012345678901234567890101234567890123456789012345678901 0097]
    79  5. paths [0123456789012345678901234567890101234567890123456789012345678901 0099]
    80  6. paths [0123456789012345678901234567890101234567890123456789012345678901 10]
    81  7. paths [0123456789012345678901234567890101234567890123456789012345678901 11]
    82  8. paths [0123456789012345678901234567890101234567890123456789012345678901 19]
    83  9. paths [19]`
    84  		if have := b.String(); have != want {
    85  			t.Errorf("have:%v\nwant:%v\n", have, want)
    86  		}
    87  	}
    88  	{
    89  		var b = new(bytes.Buffer)
    90  		for i := 0; i < len(pathsets); i++ {
    91  			fmt.Fprintf(b, "\n%d. pathset %x", i, pathsets[i])
    92  		}
    93  		want := `
    94  0. pathset [0099]
    95  1. pathset [0123456789012345678901234567890101234567890123456789012345678901 00 0095 0096 0097 0099 10 11 19]
    96  2. pathset [19]`
    97  		if have := b.String(); have != want {
    98  			t.Errorf("have:%v\nwant:%v\n", have, want)
    99  		}
   100  	}
   101  }