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package idxfile_test
import (
"bytes"
"encoding/base64"
"fmt"
"io"
"testing"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/format/idxfile"
. "gopkg.in/check.v1"
"github.com/go-git/go-git-fixtures/v4"
)
func BenchmarkFindOffset(b *testing.B) {
idx, err := fixtureIndex()
if err != nil {
b.Fatalf(err.Error())
}
for i := 0; i < b.N; i++ {
for _, h := range fixtureHashes {
_, err := idx.FindOffset(h)
if err != nil {
b.Fatalf("error getting offset: %s", err)
}
}
}
}
func BenchmarkFindCRC32(b *testing.B) {
idx, err := fixtureIndex()
if err != nil {
b.Fatalf(err.Error())
}
for i := 0; i < b.N; i++ {
for _, h := range fixtureHashes {
_, err := idx.FindCRC32(h)
if err != nil {
b.Fatalf("error getting crc32: %s", err)
}
}
}
}
func BenchmarkContains(b *testing.B) {
idx, err := fixtureIndex()
if err != nil {
b.Fatalf(err.Error())
}
for i := 0; i < b.N; i++ {
for _, h := range fixtureHashes {
ok, err := idx.Contains(h)
if err != nil {
b.Fatalf("error checking if hash is in index: %s", err)
}
if !ok {
b.Error("expected hash to be in index")
}
}
}
}
func BenchmarkEntries(b *testing.B) {
idx, err := fixtureIndex()
if err != nil {
b.Fatalf(err.Error())
}
for i := 0; i < b.N; i++ {
iter, err := idx.Entries()
if err != nil {
b.Fatalf("unexpected error getting entries: %s", err)
}
var entries int
for {
_, err := iter.Next()
if err != nil {
if err == io.EOF {
break
}
b.Errorf("unexpected error getting entry: %s", err)
}
entries++
}
if entries != len(fixtureHashes) {
b.Errorf("expecting entries to be %d, got %d", len(fixtureHashes), entries)
}
}
}
type IndexSuite struct {
fixtures.Suite
}
var _ = Suite(&IndexSuite{})
func (s *IndexSuite) TestFindHash(c *C) {
idx, err := fixtureIndex()
c.Assert(err, IsNil)
for i, pos := range fixtureOffsets {
hash, err := idx.FindHash(pos)
c.Assert(err, IsNil)
c.Assert(hash, Equals, fixtureHashes[i])
}
}
func (s *IndexSuite) TestEntriesByOffset(c *C) {
idx, err := fixtureIndex()
c.Assert(err, IsNil)
entries, err := idx.EntriesByOffset()
c.Assert(err, IsNil)
for _, pos := range fixtureOffsets {
e, err := entries.Next()
c.Assert(err, IsNil)
c.Assert(e.Offset, Equals, uint64(pos))
}
}
var fixtureHashes = []plumbing.Hash{
plumbing.NewHash("303953e5aa461c203a324821bc1717f9b4fff895"),
plumbing.NewHash("5296768e3d9f661387ccbff18c4dea6c997fd78c"),
plumbing.NewHash("03fc8d58d44267274edef4585eaeeb445879d33f"),
plumbing.NewHash("8f3ceb4ea4cb9e4a0f751795eb41c9a4f07be772"),
plumbing.NewHash("e0d1d625010087f79c9e01ad9d8f95e1628dda02"),
plumbing.NewHash("90eba326cdc4d1d61c5ad25224ccbf08731dd041"),
plumbing.NewHash("bab53055add7bc35882758a922c54a874d6b1272"),
plumbing.NewHash("1b8995f51987d8a449ca5ea4356595102dc2fbd4"),
plumbing.NewHash("35858be9c6f5914cbe6768489c41eb6809a2bceb"),
}
var fixtureOffsets = []int64{
12,
142,
1601322837,
2646996529,
3452385606,
3707047470,
5323223332,
5894072943,
5924278919,
}
func fixtureIndex() (*idxfile.MemoryIndex, error) {
f := bytes.NewBufferString(fixtureLarge4GB)
idx := new(idxfile.MemoryIndex)
d := idxfile.NewDecoder(base64.NewDecoder(base64.StdEncoding, f))
err := d.Decode(idx)
if err != nil {
return nil, fmt.Errorf("unexpected error decoding index: %s", err)
}
return idx, nil
}
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