github.com/uber/kraken@v0.1.4/lib/torrent/storage/originstorage/torrent_test.go (about)

     1  // Copyright (c) 2016-2019 Uber Technologies, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package originstorage
    15  
    16  import (
    17  	"bytes"
    18  	"io/ioutil"
    19  	"sync"
    20  	"testing"
    21  
    22  	"github.com/uber/kraken/core"
    23  	"github.com/uber/kraken/lib/store"
    24  	"github.com/uber/kraken/lib/torrent/storage/piecereader"
    25  	"github.com/uber/kraken/utils/bitsetutil"
    26  
    27  	"github.com/stretchr/testify/require"
    28  )
    29  
    30  func TestTorrentCreate(t *testing.T) {
    31  	require := require.New(t)
    32  
    33  	cas, cleanup := store.CAStoreFixture()
    34  	defer cleanup()
    35  
    36  	blob := core.SizedBlobFixture(7, 2)
    37  	mi := blob.MetaInfo
    38  
    39  	cas.CreateCacheFile(mi.Digest().Hex(), bytes.NewReader(blob.Content))
    40  
    41  	tor, err := NewTorrent(cas, mi)
    42  	require.NoError(err)
    43  
    44  	// New torrent
    45  	require.Equal(mi.Digest(), tor.Digest())
    46  	require.Equal(4, tor.NumPieces())
    47  	require.Equal(int64(7), tor.Length())
    48  	require.Equal(int64(2), tor.PieceLength(0))
    49  	require.Equal(int64(1), tor.PieceLength(3))
    50  	require.Equal(mi.InfoHash(), tor.InfoHash())
    51  	require.True(tor.Complete())
    52  	require.Equal(int64(7), tor.BytesDownloaded())
    53  	require.Equal(bitsetutil.FromBools(true, true, true, true), tor.Bitfield())
    54  	require.True(tor.HasPiece(0))
    55  	require.Equal([]int{}, tor.MissingPieces())
    56  }
    57  
    58  func TestTorrentGetPieceReaderConcurrent(t *testing.T) {
    59  	require := require.New(t)
    60  
    61  	cas, cleanup := store.CAStoreFixture()
    62  	defer cleanup()
    63  
    64  	blob := core.SizedBlobFixture(7, 2)
    65  	mi := blob.MetaInfo
    66  
    67  	cas.CreateCacheFile(mi.Digest().Hex(), bytes.NewReader(blob.Content))
    68  
    69  	tor, err := NewTorrent(cas, mi)
    70  	require.NoError(err)
    71  
    72  	wg := sync.WaitGroup{}
    73  	wg.Add(tor.NumPieces())
    74  	for i := 0; i < tor.NumPieces(); i++ {
    75  		go func(i int) {
    76  			defer wg.Done()
    77  			start := i * int(mi.PieceLength())
    78  			end := start + int(tor.PieceLength(i))
    79  			r, err := tor.GetPieceReader(i)
    80  			require.NoError(err)
    81  			defer r.Close()
    82  			result, err := ioutil.ReadAll(r)
    83  			require.NoError(err)
    84  			require.Equal(blob.Content[start:end], result)
    85  		}(i)
    86  	}
    87  
    88  	wg.Wait()
    89  }
    90  
    91  func TestTorrentWritePieceError(t *testing.T) {
    92  	require := require.New(t)
    93  
    94  	cas, cleanup := store.CAStoreFixture()
    95  	defer cleanup()
    96  
    97  	blob := core.SizedBlobFixture(7, 2)
    98  	mi := blob.MetaInfo
    99  
   100  	cas.CreateCacheFile(mi.Digest().Hex(), bytes.NewReader(blob.Content))
   101  
   102  	tor, err := NewTorrent(cas, mi)
   103  	require.NoError(err)
   104  
   105  	err = tor.WritePiece(piecereader.NewBuffer([]byte{}), 0)
   106  	require.Equal(ErrReadOnly, err)
   107  }