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 := NewBufferedWriter(NewWriter(writeBuffer)) writer.SetBuffered(false) err := writer.WriteMultiBuffer(NewMultiBufferValue(lb)) assert(err, IsNil) assert(writer.Flush(), 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)) writer := NewBufferedWriter(cache) writer.SetBuffered(false) _, err := reader.WriteTo(writer) assert(err, IsNil) mb, err := cache.ReadMultiBuffer() assert(err, IsNil) assert(mb.Len(), Equals, 8192) } func TestDiscardBytes(t *testing.T) { assert := With(t) b := New() common.Must(b.Reset(ReadFullFrom(rand.Reader, Size))) 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, NewBufferedReader(r)) assert(nBytes, Equals, int64(size)) assert(err, IsNil) }