seaweedfs/weed/filesys/page_writer/chunked_stream_writer_test.go
chrislu 083d8e9ece add stream writer
this should improve streaming write performance, which is common in many cases, e.g., copying large files.

This is additional to improved random read write operations: 3e69d19380...19084d8791
2021-12-24 22:38:22 -08:00

34 lines
667 B
Go

package page_writer
import (
"github.com/stretchr/testify/assert"
"os"
"testing"
)
func TestWriteChunkedStream(t *testing.T) {
x := NewChunkedStreamWriter(20)
defer x.Reset()
y := NewChunkedFileWriter(os.TempDir(), 12)
defer y.Reset()
batchSize := 4
buf := make([]byte, batchSize)
for i := 0; i < 256; i++ {
for x := 0; x < batchSize; x++ {
buf[x] = byte(i)
}
x.WriteAt(buf, int64(i*batchSize))
y.WriteAt(buf, int64((255-i)*batchSize))
}
a := make([]byte, 1)
b := make([]byte, 1)
for i := 0; i < 256*batchSize; i++ {
x.ReadDataAt(a, int64(i))
y.ReadDataAt(b, int64(256*batchSize-1-i))
assert.Equal(t, a[0], b[0], "same read")
}
}