metainfo/metainfo_test.go

   1 package metainfo
   2
   3 import (
   4         "io"
   5         "io/ioutil"
   6         "os"
   7         "path"
   8         "path/filepath"
   9         "strings"
  10         "testing"
  11
  12         "github.com/anacrolix/missinggo"
  13         qt "github.com/frankban/quicktest"
  14         "github.com/stretchr/testify/assert"
  15         "github.com/stretchr/testify/require"
  16
  17         "github.com/anacrolix/torrent/bencode"
  18 )
  19
  20 func testFile(t *testing.T, filename string) {
  21         mi, err := LoadFromFile(filename)
  22         require.NoError(t, err)
  23         info, err := mi.UnmarshalInfo()
  24         require.NoError(t, err)
  25
  26         if len(info.Files) == 1 {
  27                 t.Logf("Single file: %s (length: %d)\n", info.Name, info.Files[0].Length)
  28         } else {
  29                 t.Logf("Multiple files: %s\n", info.Name)
  30                 for _, f := range info.Files {
  31                         t.Logf(" - %s (length: %d)\n", path.Join(f.Path...), f.Length)
  32                 }
  33         }
  34
  35         for _, group := range mi.AnnounceList {
  36                 for _, tracker := range group {
  37                         t.Logf("Tracker: %s\n", tracker)
  38                 }
  39         }
  40
  41         b, err := bencode.Marshal(&info)
  42         require.NoError(t, err)
  43         assert.EqualValues(t, string(b), string(mi.InfoBytes))
  44 }
  45
  46 func TestFile(t *testing.T) {
  47         testFile(t, "testdata/archlinux-2011.08.19-netinstall-i686.iso.torrent")
  48         testFile(t, "testdata/continuum.torrent")
  49         testFile(t, "testdata/23516C72685E8DB0C8F15553382A927F185C4F01.torrent")
  50         testFile(t, "testdata/trackerless.torrent")
  51 }
  52
  53 // Ensure that the correct number of pieces are generated when hashing files.
  54 func TestNumPieces(t *testing.T) {
  55         for _, _case := range []struct {
  56                 PieceLength int64
  57                 Files       []FileInfo
  58                 NumPieces   int
  59         }{
  60                 {256 * 1024, []FileInfo{{Length: 1024*1024 + -1}}, 4},
  61                 {256 * 1024, []FileInfo{{Length: 1024 * 1024}}, 4},
  62                 {256 * 1024, []FileInfo{{Length: 1024*1024 + 1}}, 5},
  63                 {5, []FileInfo{{Length: 1}, {Length: 12}}, 3},
  64                 {5, []FileInfo{{Length: 4}, {Length: 12}}, 4},
  65         } {
  66                 info := Info{
  67                         Files:       _case.Files,
  68                         PieceLength: _case.PieceLength,
  69                 }
  70                 err := info.GeneratePieces(func(fi FileInfo) (io.ReadCloser, error) {
  71                         return ioutil.NopCloser(missinggo.ZeroReader), nil
  72                 })
  73                 assert.NoError(t, err)
  74                 assert.EqualValues(t, _case.NumPieces, info.NumPieces())
  75         }
  76 }
  77
  78 func touchFile(path string) (err error) {
  79         f, err := os.Create(path)
  80         if err != nil {
  81                 return
  82         }
  83         err = f.Close()
  84         return
  85 }
  86
  87 func TestBuildFromFilePathOrder(t *testing.T) {
  88         td, err := ioutil.TempDir("", "anacrolix")
  89         require.NoError(t, err)
  90         defer os.RemoveAll(td)
  91         require.NoError(t, touchFile(filepath.Join(td, "b")))
  92         require.NoError(t, touchFile(filepath.Join(td, "a")))
  93         info := Info{
  94                 PieceLength: 1,
  95         }
  96         require.NoError(t, info.BuildFromFilePath(td))
  97         assert.EqualValues(t, []FileInfo{{
  98                 Path: []string{"a"},
  99         }, {
 100                 Path: []string{"b"},
 101         }}, info.Files)
 102 }
 103
 104 func testUnmarshal(t *testing.T, input string, expected *MetaInfo) {
 105         var actual MetaInfo
 106         err := bencode.Unmarshal([]byte(input), &actual)
 107         if expected == nil {
 108                 assert.Error(t, err)
 109                 return
 110         }
 111         assert.NoError(t, err)
 112         assert.EqualValues(t, *expected, actual)
 113 }
 114
 115 func TestUnmarshal(t *testing.T) {
 116         testUnmarshal(t, `de`, &MetaInfo{})
 117         testUnmarshal(t, `d4:infoe`, nil)
 118         testUnmarshal(t, `d4:infoabce`, nil)
 119         testUnmarshal(t, `d4:infodee`, &MetaInfo{InfoBytes: []byte("de")})
 120 }
 121
 122 func TestMetainfoWithListURLList(t *testing.T) {
 123         mi, err := LoadFromFile("testdata/SKODAOCTAVIA336x280_archive.torrent")
 124         require.NoError(t, err)
 125         assert.Len(t, mi.UrlList, 3)
 126         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 127                 strings.Join([]string{
 128                         "magnet:?xt=urn:btih:d4b197dff199aad447a9a352e31528adbbd97922",
 129                         "tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce",
 130                         "tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce",
 131                         "ws=https%3A%2F%2Farchive.org%2Fdownload%2F",
 132                         "ws=http%3A%2F%2Fia601600.us.archive.org%2F26%2Fitems%2F",
 133                         "ws=http%3A%2F%2Fia801600.us.archive.org%2F26%2Fitems%2F",
 134                 }, "&"))
 135 }
 136
 137 func TestMetainfoWithStringURLList(t *testing.T) {
 138         mi, err := LoadFromFile("testdata/flat-url-list.torrent")
 139         require.NoError(t, err)
 140         assert.Len(t, mi.UrlList, 1)
 141         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 142                 strings.Join([]string{
 143                         "magnet:?xt=urn:btih:9da24e606e4ed9c7b91c1772fb5bf98f82bd9687",
 144                         "tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce",
 145                         "tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce",
 146                         "ws=https%3A%2F%2Farchive.org%2Fdownload%2F",
 147                 }, "&"))
 148 }
 149
 150 // https://github.com/anacrolix/torrent/issues/247
 151 //
 152 // The decoder buffer wasn't cleared before starting the next dict item after
 153 // a syntax error on a field with the ignore_unmarshal_type_error tag.
 154 func TestStringCreationDate(t *testing.T) {
 155         var mi MetaInfo
 156         assert.NoError(t, bencode.Unmarshal([]byte("d13:creation date23:29.03.2018 22:18:14 UTC4:infodee"), &mi))
 157 }