94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
package pack
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import (
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"bytes"
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"encoding/binary"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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var (
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V2IndexHeader = []byte{
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0xff, 0x74, 0x4f, 0x63,
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0x00, 0x00, 0x00, 0x02,
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}
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V2IndexFanout = make([]uint32, indexFanoutEntries)
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V2IndexNames = []byte{
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0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1,
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0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1,
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0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2,
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0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2, 0x2,
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0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3,
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0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3,
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}
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V2IndexSmallSha = V2IndexNames[0:20]
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V2IndexMediumSha = V2IndexNames[20:40]
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V2IndexLargeSha = V2IndexNames[40:60]
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V2IndexCRCs = []byte{
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0x0, 0x0, 0x0, 0x0,
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0x1, 0x1, 0x1, 0x1,
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0x2, 0x2, 0x2, 0x2,
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}
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V2IndexOffsets = []byte{
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0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x02,
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0x80, 0x00, 0x00, 0x01, // use the second large offset
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // filler data
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, // large offset
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}
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V2Index = &Index{
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fanout: V2IndexFanout,
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version: new(V2),
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}
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)
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func TestIndexV2EntryExact(t *testing.T) {
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e, err := new(V2).Entry(V2Index, 1)
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assert.NoError(t, err)
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assert.EqualValues(t, 2, e.PackOffset)
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}
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func TestIndexV2EntryExtendedOffset(t *testing.T) {
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e, err := new(V2).Entry(V2Index, 2)
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assert.NoError(t, err)
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assert.EqualValues(t, 3, e.PackOffset)
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}
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func TestIndexVersionWidthV2(t *testing.T) {
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assert.EqualValues(t, 8, new(V2).Width())
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}
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func init() {
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V2IndexFanout[1] = 1
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V2IndexFanout[2] = 2
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V2IndexFanout[3] = 3
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for i := 3; i < len(V2IndexFanout); i++ {
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V2IndexFanout[i] = 3
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}
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fanout := make([]byte, indexFanoutWidth)
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for i, n := range V2IndexFanout {
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binary.BigEndian.PutUint32(fanout[i*indexFanoutEntryWidth:], n)
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}
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buf := make([]byte, 0, indexOffsetV2Start+3*(indexObjectEntryV2Width)+indexObjectLargeOffsetWidth)
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buf = append(buf, V2IndexHeader...)
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buf = append(buf, fanout...)
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buf = append(buf, V2IndexNames...)
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buf = append(buf, V2IndexCRCs...)
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buf = append(buf, V2IndexOffsets...)
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V2Index.r = bytes.NewReader(buf)
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}
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