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stream_test.go
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stream_test.go
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package ks
import (
"bytes"
"crypto/md5"
"crypto/rand"
"io"
mrand "math/rand"
"testing"
"github.com/myml/kfs-ks/storage/mem"
"github.com/stretchr/testify/require"
)
func TestSteram(t *testing.T) {
assert := require.New(t)
b := &mem.Storage{}
stream := NewStream(WithStorage(b), WithDebug(true))
getData := bytes.Repeat([]byte{1}, 1024)
_, err := stream.ReadAt(getData[24:], 24)
assert.NoError(err)
assert.EqualValues(bytes.Repeat([]byte{1}, 24), getData[:24])
assert.EqualValues(make([]byte, 1000), getData[24:])
data := make([]byte, 1024)
_, err = io.ReadFull(rand.Reader, data)
assert.NoError(err)
_, err = stream.WriteAt(data, 0)
assert.NoError(err)
getData = make([]byte, 1024)
_, err = stream.ReadAt(getData, 0)
assert.NoError(err)
assert.EqualValues(data, getData)
getData = make([]byte, 1014)
_, err = stream.ReadAt(getData, 10)
assert.NoError(err)
assert.EqualValues(data[10:], getData)
getData = make([]byte, 1004)
_, err = stream.ReadAt(getData, 20)
assert.NoError(err)
assert.EqualValues(data[20:], getData)
}
func BenchmarkSteram(b *testing.B) {
s := &mem.Storage{}
stream := NewStream(WithStorage(s), WithChunkSize(100))
data := make([]byte, 999)
getData := make([]byte, 999)
io.ReadFull(rand.Reader, data)
b.ResetTimer()
for n := 0; n < b.N; n++ {
i := int64(mrand.Intn(999))
stream.WriteAt(data, i)
stream.ReadAt(getData, i)
d1, d2 := md5.Sum(data), md5.Sum(getData)
if !bytes.Equal(d1[:], d2[:]) {
b.Log("data", data)
b.Log("getData", getData)
b.Fail()
}
}
}