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package packfile_test
import (
"bytes"
"io"
"math/rand"
"testing"
"gopkg.in/src-d/go-billy.v4/memfs"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/cache"
"gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
. "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
"gopkg.in/src-d/go-git.v4/storage/filesystem"
. "gopkg.in/check.v1"
"gopkg.in/src-d/go-git-fixtures.v3"
)
type EncoderAdvancedSuite struct {
fixtures.Suite
}
var _ = Suite(&EncoderAdvancedSuite{})
func (s *EncoderAdvancedSuite) TestEncodeDecode(c *C) {
if testing.Short() {
c.Skip("skipping test in short mode.")
}
fixs := fixtures.Basic().ByTag("packfile").ByTag(".git")
fixs = append(fixs, fixtures.ByURL("https://github.com/src-d/go-git.git").
ByTag("packfile").ByTag(".git").One())
fixs.Test(c, func(f *fixtures.Fixture) {
storage := filesystem.NewStorage(f.DotGit(), cache.NewObjectLRUDefault())
s.testEncodeDecode(c, storage, 10)
})
}
func (s *EncoderAdvancedSuite) TestEncodeDecodeNoDeltaCompression(c *C) {
if testing.Short() {
c.Skip("skipping test in short mode.")
}
fixs := fixtures.Basic().ByTag("packfile").ByTag(".git")
fixs = append(fixs, fixtures.ByURL("https://github.com/src-d/go-git.git").
ByTag("packfile").ByTag(".git").One())
fixs.Test(c, func(f *fixtures.Fixture) {
storage := filesystem.NewStorage(f.DotGit(), cache.NewObjectLRUDefault())
s.testEncodeDecode(c, storage, 0)
})
}
func (s *EncoderAdvancedSuite) testEncodeDecode(
c *C,
storage storer.Storer,
packWindow uint,
) {
objIter, err := storage.IterEncodedObjects(plumbing.AnyObject)
c.Assert(err, IsNil)
expectedObjects := map[plumbing.Hash]bool{}
var hashes []plumbing.Hash
err = objIter.ForEach(func(o plumbing.EncodedObject) error {
expectedObjects[o.Hash()] = true
hashes = append(hashes, o.Hash())
return err
})
c.Assert(err, IsNil)
// Shuffle hashes to avoid delta selector getting order right just because
// the initial order is correct.
auxHashes := make([]plumbing.Hash, len(hashes))
for i, j := range rand.Perm(len(hashes)) {
auxHashes[j] = hashes[i]
}
hashes = auxHashes
buf := bytes.NewBuffer(nil)
enc := NewEncoder(buf, storage, false)
encodeHash, err := enc.Encode(hashes, packWindow)
c.Assert(err, IsNil)
fs := memfs.New()
f, err := fs.Create("packfile")
c.Assert(err, IsNil)
_, err = f.Write(buf.Bytes())
c.Assert(err, IsNil)
_, err = f.Seek(0, io.SeekStart)
c.Assert(err, IsNil)
w := new(idxfile.Writer)
parser, err := NewParser(NewScanner(f), w)
c.Assert(err, IsNil)
_, err = parser.Parse()
c.Assert(err, IsNil)
index, err := w.Index()
c.Assert(err, IsNil)
_, err = f.Seek(0, io.SeekStart)
c.Assert(err, IsNil)
p := NewPackfile(index, fs, f)
decodeHash, err := p.ID()
c.Assert(err, IsNil)
c.Assert(encodeHash, Equals, decodeHash)
objIter, err = p.GetAll()
c.Assert(err, IsNil)
obtainedObjects := map[plumbing.Hash]bool{}
err = objIter.ForEach(func(o plumbing.EncodedObject) error {
obtainedObjects[o.Hash()] = true
return nil
})
c.Assert(err, IsNil)
c.Assert(obtainedObjects, DeepEquals, expectedObjects)
for h := range obtainedObjects {
if !expectedObjects[h] {
c.Errorf("obtained unexpected object: %s", h)
}
}
for h := range expectedObjects {
if !obtainedObjects[h] {
c.Errorf("missing object: %s", h)
}
}
}
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