1
0
mirror of https://github.com/v2fly/v2ray-core.git synced 2024-12-22 18:17:52 -05:00
v2fly/common/buf/writer_test.go
2018-04-02 20:00:50 +02:00

89 lines
2.2 KiB
Go

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())
const size = 50000
reader := bufio.NewReader(io.LimitReader(rand.Reader, size))
writer := NewBufferedWriter(cache)
writer.SetBuffered(false)
nBytes, err := reader.WriteTo(writer)
assert(nBytes, Equals, int64(size))
assert(err, IsNil)
mb, err := cache.ReadMultiBuffer()
assert(err, IsNil)
assert(mb.Len(), Equals, int32(size))
}
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)
}
func TestWriterInterface(t *testing.T) {
assert := With(t)
assert((*BufferToBytesWriter)(nil), Implements, (*Writer)(nil))
assert((*BufferToBytesWriter)(nil), Implements, (*io.Writer)(nil))
assert((*BufferToBytesWriter)(nil), Implements, (*io.ReaderFrom)(nil))
assert((*BufferedWriter)(nil), Implements, (*Writer)(nil))
assert((*BufferedWriter)(nil), Implements, (*io.Writer)(nil))
assert((*BufferedWriter)(nil), Implements, (*io.ReaderFrom)(nil))
assert((*BufferedWriter)(nil), Implements, (*io.ByteWriter)(nil))
}