tstor/iio/wrapper_test.go

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2021-11-23 12:05:49 +00:00
package iio_test
import (
"bytes"
"io"
"testing"
"github.com/distribyted/distribyted/fs"
"github.com/distribyted/distribyted/iio"
"github.com/stretchr/testify/require"
)
var testData []byte = []byte("Hello World")
func TestReadAtWrapper(t *testing.T) {
t.Parallel()
require := require.New(t)
br := bytes.NewReader(testData)
r := iio.NewReadAtWrapper(br)
defer r.Close()
toRead := make([]byte, 5)
n, err := r.ReadAt(toRead, 6)
require.NoError(err)
require.Equal(5, n)
require.Equal("World", string(toRead))
n, err = r.ReadAt(toRead, 0)
require.NoError(err)
require.Equal(5, n)
require.Equal("Hello", string(toRead))
}
func TestSeekerWrapper(t *testing.T) {
t.Parallel()
require := require.New(t)
mf := fs.NewMemoryFile(testData)
r := iio.NewSeekerWrapper(mf, mf.Size())
defer r.Close()
n, err := r.Seek(6, io.SeekStart)
require.NoError(err)
require.Equal(int64(6), n)
toRead := make([]byte, 5)
nn, err := r.Read(toRead)
require.NoError(err)
require.Equal(5, nn)
require.Equal("World", string(toRead))
}