metainfo/metainfo_test.go

   1 package metainfo
   2
   3 import (
   4         "io"
   5         "io/ioutil"
   6         "os"
   7         "path"
   8         "path/filepath"
   9         "testing"
  10
  11         "github.com/anacrolix/missinggo"
  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 ioutil.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, err := ioutil.TempDir("", "anacrolix")
  88         require.NoError(t, err)
  89         defer os.RemoveAll(td)
  90         require.NoError(t, touchFile(filepath.Join(td, "b")))
  91         require.NoError(t, touchFile(filepath.Join(td, "a")))
  92         info := Info{
  93                 PieceLength: 1,
  94         }
  95         require.NoError(t, info.BuildFromFilePath(td))
  96         assert.EqualValues(t, []FileInfo{{
  97                 Path: []string{"a"},
  98         }, {
  99                 Path: []string{"b"},
 100         }}, info.Files)
 101 }
 102
 103 func testUnmarshal(t *testing.T, input string, expected *MetaInfo) {
 104         var actual MetaInfo
 105         err := bencode.Unmarshal([]byte(input), &actual)
 106         if expected == nil {
 107                 assert.Error(t, err)
 108                 return
 109         }
 110         assert.NoError(t, err)
 111         assert.EqualValues(t, *expected, actual)
 112 }
 113
 114 func TestUnmarshal(t *testing.T) {
 115         testUnmarshal(t, `de`, &MetaInfo{})
 116         testUnmarshal(t, `d4:infoe`, nil)
 117         testUnmarshal(t, `d4:infoabce`, nil)
 118         testUnmarshal(t, `d4:infodee`, &MetaInfo{InfoBytes: []byte("de")})
 119 }
 120
 121 func TestMetainfoWithListURLList(t *testing.T) {
 122         mi, err := LoadFromFile("testdata/SKODAOCTAVIA336x280_archive.torrent")
 123         require.NoError(t, err)
 124         assert.Len(t, mi.UrlList, 3)
 125         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 126                 "magnet:?xt=urn:btih:d4b197dff199aad447a9a352e31528adbbd97922&tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce&tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce")
 127 }
 128
 129 func TestMetainfoWithStringURLList(t *testing.T) {
 130         mi, err := LoadFromFile("testdata/flat-url-list.torrent")
 131         require.NoError(t, err)
 132         assert.Len(t, mi.UrlList, 1)
 133         qt.Assert(t, mi.Magnet(nil, nil).String(), qt.ContentEquals,
 134                 "magnet:?xt=urn:btih:9da24e606e4ed9c7b91c1772fb5bf98f82bd9687&tr=http%3A%2F%2Fbt1.archive.org%3A6969%2Fannounce&tr=http%3A%2F%2Fbt2.archive.org%3A6969%2Fannounce")
 135 }
 136
 137 // https://github.com/anacrolix/torrent/issues/247
 138 //
 139 // The decoder buffer wasn't cleared before starting the next dict item after
 140 // a syntax error on a field with the ignore_unmarshal_type_error tag.
 141 func TestStringCreationDate(t *testing.T) {
 142         var mi MetaInfo
 143         assert.NoError(t, bencode.Unmarshal([]byte("d13:creation date23:29.03.2018 22:18:14 UTC4:infodee"), &mi))
 144 }