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package sevenzip
import (
"io"
"math"
"path/filepath"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestFileReadCloser_Seek(t *testing.T) {
t.Parallel()
r, err := OpenReader(filepath.Join("testdata", "t0.7z"))
if err != nil {
t.Fatal(err)
}
defer func() {
if err = r.Close(); err != nil {
t.Fatal(err)
}
}()
require.GreaterOrEqual(t, len(r.File), 1)
rc, _, _, err := r.folderReader(r.si, r.File[0].folder)
if err != nil {
t.Fatal(err)
}
defer func() {
if err = rc.Close(); err != nil {
t.Fatal(err)
}
}()
_, err = rc.Seek(0, math.MaxInt)
assert.Equal(t, err, errInvalidWhence)
_, err = rc.Seek(-1, io.SeekStart)
assert.Equal(t, err, errNegativeSeek)
n, err := rc.Seek(1, io.SeekCurrent)
assert.Equal(t, int64(1), n)
assert.NoError(t, err) //nolint:testifylint
_, err = rc.Seek(-1, io.SeekCurrent)
assert.Equal(t, err, errSeekBackwards)
_, err = rc.Seek(int64(r.File[0].UncompressedSize), io.SeekCurrent) //nolint:gosec
assert.Equal(t, err, errSeekEOF)
n, err = rc.Seek(int64(r.File[0].UncompressedSize), io.SeekStart) //nolint:gosec
assert.Equal(t, n, int64(r.File[0].UncompressedSize)) //nolint:gosec
assert.NoError(t, err) //nolint:testifylint
n, err = rc.Seek(0, io.SeekEnd)
assert.Equal(t, n, int64(r.File[0].UncompressedSize)) //nolint:gosec
assert.NoError(t, err)
}
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