git add

Hunter0x7c7

2022-08-11 a82f9cb69f63aaeba40c024960deda7d75b9fece

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package buf_test 
 
import ( 
    "bufio" 
    "bytes" 
    "crypto/rand" 
    "io" 
    "testing" 
 
    "github.com/google/go-cmp/cmp" 
 
    "github.com/v2fly/v2ray-core/v5/common" 
    . "github.com/v2fly/v2ray-core/v5/common/buf" 
    "github.com/v2fly/v2ray-core/v5/transport/pipe" 
) 
 
func TestWriter(t *testing.T) { 
    lb := New() 
    common.Must2(lb.ReadFrom(rand.Reader)) 
 
    expectedBytes := append([]byte(nil), lb.Bytes()...) 
 
    writeBuffer := bytes.NewBuffer(make([]byte, 0, 1024*1024)) 
 
    writer := NewBufferedWriter(NewWriter(writeBuffer)) 
    writer.SetBuffered(false) 
    common.Must(writer.WriteMultiBuffer(MultiBuffer{lb})) 
    common.Must(writer.Flush()) 
 
    if r := cmp.Diff(expectedBytes, writeBuffer.Bytes()); r != "" { 
        t.Error(r) 
    } 
} 
 
func TestBytesWriterReadFrom(t *testing.T) { 
    const size = 50000 
    pReader, pWriter := pipe.New(pipe.WithSizeLimit(size)) 
    reader := bufio.NewReader(io.LimitReader(rand.Reader, size)) 
    writer := NewBufferedWriter(pWriter) 
    writer.SetBuffered(false) 
    nBytes, err := reader.WriteTo(writer) 
    if nBytes != size { 
        t.Fatal("unexpected size of bytes written: ", nBytes) 
    } 
    if err != nil { 
        t.Fatal("expect success, but actually error: ", err.Error()) 
    } 
 
    mb, err := pReader.ReadMultiBuffer() 
    common.Must(err) 
    if mb.Len() != size { 
        t.Fatal("unexpected size read: ", mb.Len()) 
    } 
} 
 
func TestDiscardBytes(t *testing.T) { 
    b := New() 
    common.Must2(b.ReadFullFrom(rand.Reader, Size)) 
 
    nBytes, err := io.Copy(DiscardBytes, b) 
    common.Must(err) 
    if nBytes != Size { 
        t.Error("copy size: ", nBytes) 
    } 
} 
 
func TestDiscardBytesMultiBuffer(t *testing.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, &BufferedReader{Reader: r}) 
    common.Must(err) 
    if nBytes != size { 
        t.Error("copy size: ", nBytes) 
    } 
} 
 
func TestWriterInterface(t *testing.T) { 
    { 
        var writer interface{} = (*BufferToBytesWriter)(nil) 
        switch writer.(type) { 
        case Writer, io.Writer, io.ReaderFrom: 
        default: 
            t.Error("BufferToBytesWriter is not Writer, io.Writer or io.ReaderFrom") 
        } 
    } 
 
    { 
        var writer interface{} = (*BufferedWriter)(nil) 
        switch writer.(type) { 
        case Writer, io.Writer, io.ReaderFrom, io.ByteWriter: 
        default: 
            t.Error("BufferedWriter is not Writer, io.Writer, io.ReaderFrom or io.ByteWriter") 
        } 
    } 
}