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package kcp_test
import (
"testing"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
. "github.com/xtls/xray-core/transport/internet/kcp"
)
func TestBadSegment(t *testing.T) {
seg, buf := ReadSegment(nil)
if seg != nil {
t.Error("non-nil seg")
}
if len(buf) != 0 {
t.Error("buf len: ", len(buf))
}
}
func TestDataSegment(t *testing.T) {
seg := &DataSegment{
Conv: 1,
Timestamp: 3,
Number: 4,
SendingNext: 5,
}
seg.Data().Write([]byte{'a', 'b', 'c', 'd'})
nBytes := seg.ByteSize()
bytes := make([]byte, nBytes)
seg.Serialize(bytes)
iseg, _ := ReadSegment(bytes)
seg2 := iseg.(*DataSegment)
if r := cmp.Diff(seg2, seg, cmpopts.IgnoreUnexported(DataSegment{})); r != "" {
t.Error(r)
}
if r := cmp.Diff(seg2.Data().Bytes(), seg.Data().Bytes()); r != "" {
t.Error(r)
}
}
func Test1ByteDataSegment(t *testing.T) {
seg := &DataSegment{
Conv: 1,
Timestamp: 3,
Number: 4,
SendingNext: 5,
}
seg.Data().WriteByte('a')
nBytes := seg.ByteSize()
bytes := make([]byte, nBytes)
seg.Serialize(bytes)
iseg, _ := ReadSegment(bytes)
seg2 := iseg.(*DataSegment)
if r := cmp.Diff(seg2, seg, cmpopts.IgnoreUnexported(DataSegment{})); r != "" {
t.Error(r)
}
if r := cmp.Diff(seg2.Data().Bytes(), seg.Data().Bytes()); r != "" {
t.Error(r)
}
}
func TestACKSegment(t *testing.T) {
seg := &AckSegment{
Conv: 1,
ReceivingWindow: 2,
ReceivingNext: 3,
Timestamp: 10,
NumberList: []uint32{1, 3, 5, 7, 9},
}
nBytes := seg.ByteSize()
bytes := make([]byte, nBytes)
seg.Serialize(bytes)
iseg, _ := ReadSegment(bytes)
seg2 := iseg.(*AckSegment)
if r := cmp.Diff(seg2, seg); r != "" {
t.Error(r)
}
}
func TestCmdSegment(t *testing.T) {
seg := &CmdOnlySegment{
Conv: 1,
Cmd: CommandPing,
Option: SegmentOptionClose,
SendingNext: 11,
ReceivingNext: 13,
PeerRTO: 15,
}
nBytes := seg.ByteSize()
bytes := make([]byte, nBytes)
seg.Serialize(bytes)
iseg, _ := ReadSegment(bytes)
seg2 := iseg.(*CmdOnlySegment)
if r := cmp.Diff(seg2, seg); r != "" {
t.Error(r)
}
}