mirror of
https://github.com/asticode/go-astiav.git
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f8f8f0e7ee
* OpenIOContextWithDictionary * OpenIOContext * OpenIOContext * IOInterrupterCB * OpenIOContext(filename string, flags IOContextFlags, ii *IOInterrupter, d *Dictionary)
73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package astiav
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import (
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"io"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestIOContext(t *testing.T) {
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t.Run("read write seek", func(t *testing.T) {
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var seeked bool
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rb := []byte("read")
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wb := []byte("write")
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var written []byte
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c, err := AllocIOContext(8, true, func(b []byte) (int, error) {
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copy(b, rb)
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return len(rb), nil
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}, func(offset int64, whence int) (n int64, err error) {
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seeked = true
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return offset, nil
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}, func(b []byte) (int, error) {
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written = make([]byte, len(b))
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copy(written, b)
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return len(b), nil
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})
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require.NoError(t, err)
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defer c.Free()
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b := make([]byte, 6)
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n, err := c.Read(b)
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require.NoError(t, err)
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require.Equal(t, 4, n)
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require.Equal(t, rb, b[:n])
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_, err = c.Seek(2, 0)
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require.NoError(t, err)
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require.True(t, seeked)
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c.Write(wb)
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c.Flush()
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require.Equal(t, wb, written)
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})
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t.Run("io.EOF is mapped to AVERROR_EOF when reading", func(t *testing.T) {
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c, err := AllocIOContext(8, false, func(b []byte) (int, error) {
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return 0, io.EOF
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}, nil, nil)
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require.NoError(t, err)
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defer c.Free()
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b := make([]byte, 100)
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n, err := c.Read(b)
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require.ErrorIs(t, err, ErrEof)
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require.Equal(t, 0, n)
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})
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}
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func TestOpenIOContext(t *testing.T) {
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path := filepath.Join(t.TempDir(), "iocontext.txt")
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c, err := OpenIOContext(path, NewIOContextFlags(IOContextFlagWrite), nil, nil)
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require.NoError(t, err)
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cl := c.Class()
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require.NotNil(t, cl)
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require.Equal(t, "AVIOContext", cl.Name())
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c.Write(nil)
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c.Write([]byte("test"))
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require.NoError(t, c.Close())
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b, err := os.ReadFile(path)
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require.NoError(t, err)
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require.Equal(t, "test", string(b))
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err = os.Remove(path)
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require.NoError(t, err)
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}
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