73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package pack
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import (
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"bytes"
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"encoding/binary"
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"io"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestDecodeIndexV1InvalidFanout(t *testing.T) {
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idx, err := DecodeIndex(bytes.NewReader(make([]byte, indexFanoutWidth-1)))
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assert.Equal(t, ErrShortFanout, err)
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assert.Nil(t, idx)
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}
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func TestDecodeIndexV2(t *testing.T) {
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buf := make([]byte, 0, indexV2Width+indexFanoutWidth)
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buf = append(buf, 0xff, 0x74, 0x4f, 0x63)
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buf = append(buf, 0x0, 0x0, 0x0, 0x2)
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for i := 0; i < indexFanoutEntries; i++ {
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x := make([]byte, 4)
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binary.BigEndian.PutUint32(x, uint32(3))
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buf = append(buf, x...)
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}
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idx, err := DecodeIndex(bytes.NewReader(buf))
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assert.NoError(t, err)
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assert.EqualValues(t, 3, idx.Count())
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}
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func TestDecodeIndexV2InvalidFanout(t *testing.T) {
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buf := make([]byte, 0, indexV2Width+indexFanoutWidth-indexFanoutEntryWidth)
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buf = append(buf, 0xff, 0x74, 0x4f, 0x63)
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buf = append(buf, 0x0, 0x0, 0x0, 0x2)
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buf = append(buf, make([]byte, indexFanoutWidth-1)...)
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idx, err := DecodeIndex(bytes.NewReader(buf))
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assert.Nil(t, idx)
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assert.Equal(t, ErrShortFanout, err)
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}
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func TestDecodeIndexV1(t *testing.T) {
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idx, err := DecodeIndex(bytes.NewReader(make([]byte, indexFanoutWidth)))
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assert.NoError(t, err)
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assert.EqualValues(t, 0, idx.Count())
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}
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func TestDecodeIndexUnsupportedVersion(t *testing.T) {
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buf := make([]byte, 0, 4+4)
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buf = append(buf, 0xff, 0x74, 0x4f, 0x63)
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buf = append(buf, 0x0, 0x0, 0x0, 0x3)
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idx, err := DecodeIndex(bytes.NewReader(buf))
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assert.EqualError(t, err, "git/odb/pack: unsupported version: 3")
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assert.Nil(t, idx)
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}
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func TestDecodeIndexEmptyContents(t *testing.T) {
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idx, err := DecodeIndex(bytes.NewReader(make([]byte, 0)))
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assert.Equal(t, io.EOF, err)
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assert.Nil(t, idx)
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}
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