10 "github.com/anacrolix/missinggo"
11 "github.com/anacrolix/torrent/bencode"
12 "github.com/anacrolix/torrent/internal/testutil"
13 "github.com/anacrolix/torrent/metainfo"
14 pp "github.com/anacrolix/torrent/peer_protocol"
15 "github.com/anacrolix/torrent/storage"
16 "github.com/bradfitz/iter"
17 "github.com/stretchr/testify/assert"
18 "github.com/stretchr/testify/require"
21 func r(i, b, l pp.Integer) request {
22 return request{i, chunkSpec{b, l}}
25 // Check the given Request is correct for various torrent offsets.
26 func TestTorrentRequest(t *testing.T) {
27 const s = 472183431 // Length of torrent.
28 for _, _case := range []struct {
29 off int64 // An offset into the torrent.
30 req request // The expected Request. The zero value means !ok.
35 // One before the end of a piece.
36 {1<<18 - 1, r(0, 1<<18-16384, 16384)},
37 // Offset beyond torrent length.
38 {472 * 1 << 20, request{}},
39 // One before the end of the torrent. Complicates the chunk length.
40 {s - 1, r((s-1)/(1<<18), (s-1)%(1<<18)/(16384)*(16384), 12935)},
42 // One before end of chunk.
43 {16383, r(0, 0, 16384)},
45 {16384, r(0, 16384, 16384)},
47 req, ok := torrentOffsetRequest(472183431, 1<<18, 16384, _case.off)
48 if (_case.req == request{}) == ok {
49 t.Fatalf("expected %v, got %v", _case.req, req)
52 t.Fatalf("expected %v, got %v", _case.req, req)
57 func TestAppendToCopySlice(t *testing.T) {
58 orig := []int{1, 2, 3}
59 dupe := append([]int{}, orig...)
66 func TestTorrentString(t *testing.T) {
68 s := tor.InfoHash().HexString()
69 if s != "0000000000000000000000000000000000000000" {
74 // This benchmark is from the observation that a lot of overlapping Readers on
75 // a large torrent with small pieces had a lot of overhead in recalculating
76 // piece priorities everytime a reader (possibly in another Torrent) changed.
77 func BenchmarkUpdatePiecePriorities(b *testing.B) {
80 pieceLength = 256 << 10
82 cl := &Client{config: &ClientConfig{}}
84 t := cl.newTorrent(metainfo.Hash{}, nil)
85 require.NoError(b, t.setInfo(&metainfo.Info{
86 Pieces: make([]byte, metainfo.HashSize*numPieces),
87 PieceLength: pieceLength,
88 Length: pieceLength * numPieces,
90 assert.EqualValues(b, 13410, t.numPieces())
93 r.SetReadahead(32 << 20)
96 assert.Len(b, t.readers, 7)
97 for i := 0; i < int(t.numPieces()); i += 3 {
98 t.completedPieces.Set(i, true)
100 t.DownloadPieces(0, t.numPieces())
101 for range iter.N(b.N) {
102 t.updateAllPiecePriorities()
106 // Check that a torrent containing zero-length file(s) will start, and that
107 // they're created in the filesystem. The client storage is assumed to be
108 // file-based on the native filesystem based.
109 func testEmptyFilesAndZeroPieceLength(t *testing.T, cfg *ClientConfig) {
110 cl, err := NewClient(cfg)
111 require.NoError(t, err)
113 ib, err := bencode.Marshal(metainfo.Info{
118 require.NoError(t, err)
119 fp := filepath.Join(cfg.DataDir, "empty")
121 assert.False(t, missinggo.FilePathExists(fp))
122 tt, err := cl.AddTorrent(&metainfo.MetaInfo{
125 require.NoError(t, err)
128 require.True(t, cl.WaitAll())
129 assert.True(t, missinggo.FilePathExists(fp))
132 func TestEmptyFilesAndZeroPieceLengthWithFileStorage(t *testing.T) {
133 cfg := TestingConfig()
134 ci := storage.NewFile(cfg.DataDir)
136 cfg.DefaultStorage = ci
137 testEmptyFilesAndZeroPieceLength(t, cfg)
140 func TestEmptyFilesAndZeroPieceLengthWithMMapStorage(t *testing.T) {
141 cfg := TestingConfig()
142 ci := storage.NewMMap(cfg.DataDir)
144 cfg.DefaultStorage = ci
145 testEmptyFilesAndZeroPieceLength(t, cfg)
148 func TestPieceHashFailed(t *testing.T) {
149 mi := testutil.GreetingMetaInfo()
151 cl.config = &ClientConfig{}
153 tt := cl.newTorrent(mi.HashInfoBytes(), badStorage{})
155 require.NoError(t, tt.setInfoBytes(mi.InfoBytes))
157 tt.pieces[1].dirtyChunks.AddRange(0, 3)
158 require.True(t, tt.pieceAllDirty(1))
159 tt.pieceHashed(1, false)
160 // Dirty chunks should be cleared so we can try again.
161 require.False(t, tt.pieceAllDirty(1))
165 // Check the behaviour of Torrent.Metainfo when metadata is not completed.
166 func TestTorrentMetainfoIncompleteMetadata(t *testing.T) {
167 cfg := TestingConfig()
169 cl, err := NewClient(cfg)
170 require.NoError(t, err)
173 mi := testutil.GreetingMetaInfo()
174 ih := mi.HashInfoBytes()
176 tt, _ := cl.AddTorrentInfoHash(ih)
177 assert.Nil(t, tt.Metainfo().InfoBytes)
178 assert.False(t, tt.haveAllMetadataPieces())
180 nc, err := net.Dial("tcp", fmt.Sprintf(":%d", cl.LocalPort()))
181 require.NoError(t, err)
184 var pex PeerExtensionBits
185 pex.SetBit(pp.ExtensionBitExtended)
186 hr, ok, err := pp.Handshake(nc, &ih, [20]byte{}, pex)
187 require.NoError(t, err)
189 assert.True(t, hr.PeerExtensionBits.GetBit(pp.ExtensionBitExtended))
190 assert.EqualValues(t, cl.PeerID(), hr.PeerID)
191 assert.EqualValues(t, ih, hr.Hash)
193 assert.EqualValues(t, 0, tt.metadataSize())
199 _, err = nc.Write(pp.Message{
201 ExtendedID: pp.HandshakeExtendedID,
202 ExtendedPayload: func() []byte {
203 d := map[string]interface{}{
204 "metadata_size": len(mi.InfoBytes),
206 b, err := bencode.Marshal(d)
212 }.MustMarshalBinary())
213 require.NoError(t, err)
215 tt.metadataChanged.Wait()
217 assert.Equal(t, make([]byte, len(mi.InfoBytes)), tt.metadataBytes)
218 assert.False(t, tt.haveAllMetadataPieces())
219 assert.Nil(t, tt.Metainfo().InfoBytes)