metainfo/metainfo_test.go

   1 package metainfo
   2
   3 import (
   4         "io"
   5         "os"
   6         "path"
   7         "path/filepath"
   8         "strings"
   9         "testing"
  10
  11         "github.com/anacrolix/missinggo/v2"
  12         qt "github.com/frankban/quicktest"
  13         "github.com/stretchr/testify/assert"
  14         "github.com/stretchr/testify/require"
  15
  16         "github.com/anacrolix/torrent/bencode"
  17 )
  18
  19 func testFile(t *testing.T, filename string) {
  20         mi, err := LoadFromFile(filename)
  21         require.NoError(t, err)
  22         info, err := mi.UnmarshalInfo()
  23         require.NoError(t, err)
  24
  25         if len(info.Files) == 1 {
  26                 t.Logf("Single file: %s (length: %d)\n", info.Name, info.Files[0].Length)
  27         } else {
  28                 t.Logf("Multiple files: %s\n", info.Name)
  29                 for _, f := range info.Files {
  30                         t.Logf(" - %s (length: %d)\n", path.Join(f.Path...), f.Length)
  31                 }
  32         }
  33
  34         for _, group := range mi.AnnounceList {
  35                 for _, tracker := range group {
  36                         t.Logf("Tracker: %s\n", tracker)
  37                 }
  38         }
  39
  40         b, err := bencode.Marshal(&info)
  41         require.NoError(t, err)
  42         assert.EqualValues(t, string(b), string(mi.InfoBytes))
  43 }
  44
  45 func TestFile(t *testing.T) {
  46         testFile(t, "testdata/archlinux-2011.08.19-netinstall-i686.iso.torrent")
  47         testFile(t, "testdata/continuum.torrent")
  48         testFile(t, "testdata/23516C72685E8DB0C8F15553382A927F185C4F01.torrent")
  49         testFile(t, "testdata/trackerless.torrent")
  50 }
  51
  52 // Ensure that the correct number of pieces are generated when hashing files.
  53 func TestNumPieces(t *testing.T) {
  54         for _, _case := range []struct {
  55                 PieceLength int64
  56                 Files       []FileInfo
  57                 NumPieces   int
  58         }{
  59                 {256 * 1024, []FileInfo{{Length: 1024*1024 + -1}}, 4},
  60                 {256 * 1024, []FileInfo{{Length: 1024 * 1024}}, 4},
  61                 {256 * 1024, []FileInfo{{Length: 1024*1024 + 1}}, 5},
  62                 {5, []FileInfo{{Length: 1}, {Length: 12}}, 3},
  63                 {5, []FileInfo{{Length: 4}, {Length: 12}}, 4},
  64         } {
  65                 info := Info{
  66                         Files:       _case.Files,
  67                         PieceLength: _case.PieceLength,
  68                 }
  69                 err := info.GeneratePieces(func(fi FileInfo) (io.ReadCloser, error) {
  70                         return io.NopCloser(missinggo.ZeroReader), nil
  71                 })
  72                 assert.NoError(t, err)
  73                 assert.EqualValues(t, _case.NumPieces, info.NumPieces())
  74         }
  75 }
  76
  77 func touchFile(path string) (err error) {
  78         f, err := os.Create(path)
  79         if err != nil {
  80                 return
  81         }
  82         err = f.Close()
  83         return
  84 }
  85
  86 func TestBuildFromFilePathOrder(t *testing.T) {
  87         td := t.TempDir()
  88         require.NoError(t, touchFile(filepath.Join(td, "b")))
  89         require.NoError(t, touchFile(filepath.Join(td, "a")))
  90         info := Info{
  91                 PieceLength: 1,
  92         }
  93         require.NoError(t, info.BuildFromFilePath(td))
  94         assert.EqualValues(t, []FileInfo{{
  95                 Path: []string{"a"},
  96         }, {
  97                 Path: []string{"b"},
  98         }}, info.Files)
  99 }
 100
 101 func testUnmarshal(t *testing.T, input string, expected *MetaInfo) {
 102         var actual MetaInfo
 103         err := bencode.Unmarshal([]byte(input), &actual)
 104         if expected == nil {
 105                 assert.Error(t, err)
 106                 return
 107         }
 108         assert.NoError(t, err)
 109         assert.EqualValues(t, *expected, actual)
 110 }
 111
 112 func TestUnmarshal(t *testing.T) {
 113         testUnmarshal(t, `de`, &MetaInfo{})
 114         testUnmarshal(t, `d4:infoe`, nil)
 115         testUnmarshal(t, `d4:infoabce`, nil)
 116         testUnmarshal(t, `d4:infodee`, &MetaInfo{InfoBytes: []byte("de")})
 117 }
 118
 119 func TestMetainfoWithListURLList(t *testing.T) {
 120         mi, err := LoadFromFile("testdata/SKODAOCTAVIA336x280_archive.torrent")
 121         require.NoError(t, err)
 122         assert.Len(t, mi.UrlList, 3)
 123         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 124                 strings.Join([]string{
 125                         "magnet:?xt=urn:btih:d4b197dff199aad447a9a352e31528adbbd97922",
 126                         "tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce",
 127                         "tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce",
 128                         "ws=https%3A%2F%2Farchive.org%2Fdownload%2F",
 129                         "ws=http%3A%2F%2Fia601600.us.archive.org%2F26%2Fitems%2F",
 130                         "ws=http%3A%2F%2Fia801600.us.archive.org%2F26%2Fitems%2F",
 131                 }, "&"))
 132 }
 133
 134 func TestMetainfoWithStringURLList(t *testing.T) {
 135         mi, err := LoadFromFile("testdata/flat-url-list.torrent")
 136         require.NoError(t, err)
 137         assert.Len(t, mi.UrlList, 1)
 138         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 139                 strings.Join([]string{
 140                         "magnet:?xt=urn:btih:9da24e606e4ed9c7b91c1772fb5bf98f82bd9687",
 141                         "tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce",
 142                         "tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce",
 143                         "ws=https%3A%2F%2Farchive.org%2Fdownload%2F",
 144                 }, "&"))
 145 }
 146
 147 // https://github.com/anacrolix/torrent/issues/247
 148 //
 149 // The decoder buffer wasn't cleared before starting the next dict item after
 150 // a syntax error on a field with the ignore_unmarshal_type_error tag.
 151 func TestStringCreationDate(t *testing.T) {
 152         var mi MetaInfo
 153         assert.NoError(t, bencode.Unmarshal([]byte("d13:creation date23:29.03.2018 22:18:14 UTC4:infodee"), &mi))
 154 }
 155
 156 // See https://github.com/anacrolix/torrent/issues/843.
 157 func TestUnmarshalEmptyStringNodes(t *testing.T) {
 158         var mi MetaInfo
 159         c := qt.New(t)
 160         err := bencode.Unmarshal([]byte("d5:nodes0:e"), &mi)
 161         c.Assert(err, qt.IsNil)
 162 }