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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"
fixtures "github.com/go-git/go-git-fixtures/v4"
. "gopkg.in/check.v1"
)
func Test(t *testing.T) { TestingT(t) }
type IdxfileSuite struct {
fixtures.Suite
}
var _ = Suite(&IdxfileSuite{})
func (s *IdxfileSuite) TestDecode(c *C) {
f := fixtures.Basic().One()
d := NewDecoder(f.Idx())
idx := new(MemoryIndex)
err := d.Decode(idx)
c.Assert(err, IsNil)
count, _ := idx.Count()
c.Assert(count, Equals, int64(31))
hash := plumbing.NewHash("1669dce138d9b841a518c64b10914d88f5e488ea")
ok, err := idx.Contains(hash)
c.Assert(err, IsNil)
c.Assert(ok, Equals, true)
offset, err := idx.FindOffset(hash)
c.Assert(err, IsNil)
c.Assert(offset, Equals, int64(615))
crc32, err := idx.FindCRC32(hash)
c.Assert(err, IsNil)
c.Assert(crc32, Equals, uint32(3645019190))
c.Assert(fmt.Sprintf("%x", idx.IdxChecksum), Equals, "fb794f1ec720b9bc8e43257451bd99c4be6fa1c9")
c.Assert(fmt.Sprintf("%x", idx.PackfileChecksum), Equals, f.PackfileHash)
}
func (s *IdxfileSuite) TestDecode64bitsOffsets(c *C) {
f := bytes.NewBufferString(fixtureLarge4GB)
idx := new(MemoryIndex)
d := NewDecoder(base64.NewDecoder(base64.StdEncoding, f))
err := d.Decode(idx)
c.Assert(err, IsNil)
expected := map[string]uint64{
"303953e5aa461c203a324821bc1717f9b4fff895": 12,
"5296768e3d9f661387ccbff18c4dea6c997fd78c": 142,
"03fc8d58d44267274edef4585eaeeb445879d33f": 1601322837,
"8f3ceb4ea4cb9e4a0f751795eb41c9a4f07be772": 2646996529,
"e0d1d625010087f79c9e01ad9d8f95e1628dda02": 3452385606,
"90eba326cdc4d1d61c5ad25224ccbf08731dd041": 3707047470,
"bab53055add7bc35882758a922c54a874d6b1272": 5323223332,
"1b8995f51987d8a449ca5ea4356595102dc2fbd4": 5894072943,
"35858be9c6f5914cbe6768489c41eb6809a2bceb": 5924278919,
}
iter, err := idx.Entries()
c.Assert(err, IsNil)
var entries int
for {
e, err := iter.Next()
if err == io.EOF {
break
}
c.Assert(err, IsNil)
entries++
c.Assert(expected[e.Hash.String()], Equals, e.Offset)
}
c.Assert(entries, Equals, len(expected))
}
const fixtureLarge4GB = `/3RPYwAAAAIAAAAAAAAAAAAAAAAAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEA
AAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAA
AAEAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAA
AgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAADAAAAAwAAAAMAAAADAAAAAwAAAAQAAAAE
AAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQA
AAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABQAA
AAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAA
BQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAF
AAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUA
AAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAAAAUAAAAFAAAABQAA
AAUAAAAFAAAABQAAAAYAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAA
BwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAH
AAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcAAAAHAAAABwAAAAcA
AAAHAAAABwAAAAcAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAA
AAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAA
CAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAkAAAAJ
AAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAAAAkA
AAAJAAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAAAAkAAAAJAAAACQAA
AAkAAAAJA/yNWNRCZydO3vRYXq7rRFh50z8biZX1GYfYpEnKXqQ1ZZUQLcL71DA5U+WqRhwgOjJI
IbwXF/m0//iVNYWL6cb1kUy+Z2hInEHraAmivOtSlnaOPZ9mE4fMv/GMTepsmX/XjI88606ky55K
D3UXletByaTwe+dykOujJs3E0dYcWtJSJMy/CHMd0EG6tTBVrde8NYgnWKkixUqHTWsScuDR1iUB
AIf3nJ4BrZ2PleFijdoCkp36qiGHwFa8NHxMnInZ0s3CKEKmHe+KcZPzuqwmm44GvqGAX3I/VYAA
AAAAAAAMgAAAAQAAAI6AAAACgAAAA4AAAASAAAAFAAAAAV9Qam8AAAABYR1ShwAAAACdxfYxAAAA
ANz1Di4AAAABPUnxJAAAAADNxzlGr6vCJpIFz4XaG/fi/f9C9zgQ8ptKSQpfQ1NMJBGTDTxxYGGp
ch2xUA==
`
func BenchmarkDecode(b *testing.B) {
f := fixtures.Basic().One()
fixture, err := io.ReadAll(f.Idx())
if err != nil {
b.Errorf("unexpected error reading idx file: %s", err)
}
defer fixtures.Clean()
for i := 0; i < b.N; i++ {
f := bytes.NewBuffer(fixture)
idx := new(MemoryIndex)
d := NewDecoder(f)
if err := d.Decode(idx); err != nil {
b.Errorf("unexpected error decoding: %s", err)
}
}
}
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