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v2ray-core/common/buf/writer_test.go

71 lines
1.5 KiB

package buf_test
import (
"bufio"
"bytes"
"crypto/rand"
"testing"
"context"
"io"
"v2ray.com/core/common"
. "v2ray.com/core/common/buf"
"v2ray.com/core/transport/ray"
. "v2ray.com/ext/assert"
)
func TestWriter(t *testing.T) {
assert := With(t)
lb := New()
assert(lb.AppendSupplier(ReadFrom(rand.Reader)), IsNil)
expectedBytes := append([]byte(nil), lb.Bytes()...)
writeBuffer := bytes.NewBuffer(make([]byte, 0, 1024*1024))
writer := NewWriter(NewBufferedWriter(writeBuffer))
err := writer.Write(NewMultiBufferValue(lb))
assert(err, IsNil)
assert(expectedBytes, Equals, writeBuffer.Bytes())
}
func TestBytesWriterReadFrom(t *testing.T) {
assert := With(t)
cache := ray.NewStream(context.Background())
reader := bufio.NewReader(io.LimitReader(rand.Reader, 8192))
_, err := reader.WriteTo(ToBytesWriter(cache))
assert(err, IsNil)
mb, err := cache.Read()
assert(err, IsNil)
assert(mb.Len(), Equals, 8192)
assert(len(mb), Equals, 4)
}
func TestDiscardBytes(t *testing.T) {
assert := With(t)
b := New()
common.Must(b.Reset(ReadFrom(rand.Reader)))
nBytes, err := io.Copy(DiscardBytes, b)
assert(nBytes, Equals, int64(Size))
assert(err, IsNil)
}
func TestDiscardBytesMultiBuffer(t *testing.T) {
assert := With(t)
const size = 10240*1024 + 1
buffer := bytes.NewBuffer(make([]byte, 0, size))
common.Must2(buffer.ReadFrom(io.LimitReader(rand.Reader, size)))
r := NewReader(buffer)
nBytes, err := io.Copy(DiscardBytes, ToBytesReader(r))
assert(nBytes, Equals, int64(size))
assert(err, IsNil)
}