package pack_test import ( "bytes" "crypto/rand" "crypto/sha256" "encoding/binary" "encoding/json" "io" "io/ioutil" "testing" "github.com/restic/restic/backend" "github.com/restic/restic/crypto" "github.com/restic/restic/pack" . "github.com/restic/restic/test" ) var lengths = []int{23, 31650, 25860, 10928, 13769, 19862, 5211, 127, 13690, 30231} func TestCreatePack(t *testing.T) { type Buf struct { data []byte id backend.ID } bufs := []Buf{} for _, l := range lengths { b := make([]byte, l) _, err := io.ReadFull(rand.Reader, b) OK(t, err) h := sha256.Sum256(b) bufs = append(bufs, Buf{data: b, id: h}) } // create random keys k := crypto.NewRandomKey() // pack blobs p := pack.NewPacker(k, nil) for _, b := range bufs { p.Add(pack.Tree, b.id, bytes.NewReader(b.data)) } packData, err := p.Finalize() OK(t, err) written := 0 for _, l := range lengths { written += l } // header length written += binary.Size(uint32(0)) // header written += len(lengths) * (binary.Size(pack.BlobType(0)) + binary.Size(uint32(0)) + backend.IDSize) // header crypto written += crypto.Extension // check length Equals(t, written, len(packData)) Equals(t, uint(written), p.Size()) // read and parse it again rd := bytes.NewReader(packData) np, err := pack.NewUnpacker(k, rd) OK(t, err) Equals(t, len(np.Entries), len(bufs)) for i, b := range bufs { e := np.Entries[i] Equals(t, b.id, e.ID) brd, err := e.GetReader(rd) OK(t, err) data, err := ioutil.ReadAll(brd) OK(t, err) Assert(t, bytes.Equal(b.data, data), "data for blob %v doesn't match", i) } } var blobTypeJSON = []struct { t pack.BlobType res string }{ {pack.Data, `"data"`}, {pack.Tree, `"tree"`}, } func TestBlobTypeJSON(t *testing.T) { for _, test := range blobTypeJSON { // test serialize buf, err := json.Marshal(test.t) OK(t, err) Equals(t, test.res, string(buf)) // test unserialize var v pack.BlobType err = json.Unmarshal([]byte(test.res), &v) OK(t, err) Equals(t, test.t, v) } }