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package frame
import (
"bytes"
"io/ioutil"
"reflect"
"testing"
)
type fakeTrans struct {
*bytes.Buffer
}
func (c *fakeTrans) Close() error { return nil }
func loadedTrans(p []byte) (*fakeTrans, *BasicTransport) {
trans := &fakeTrans{bytes.NewBuffer(p)}
return trans, NewBasicTransport(trans)
}
type DataTestParams struct {
streamId StreamId
data []byte
fin bool
}
func TestSerializeData(t *testing.T) {
t.Parallel()
cases := []struct {
params DataTestParams
expected []byte
}{
{
// test a generic data frame
DataTestParams{0x49a1bb00, []byte{0x00, 0x01, 0x02, 0x03, 0x04}, false},
[]byte{0x0, 0x5, 0x0, TypeStreamData, 0x49, 0xa1, 0xbb, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04},
},
{
// test a a frame with fin
DataTestParams{streamMask, []byte{0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00}, true},
[]byte{0x00, 0x10, flagFin, TypeStreamData, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00},
},
{
// test a zero-length frame
DataTestParams{0x0, []byte{}, false},
[]byte{0x0, 0x0, 0x0, TypeStreamData, 0x0, 0x0, 0x0, 0x0},
},
}
for _, tcase := range cases {
buf, trans := loadedTrans([]byte{})
var f *WStreamData = NewWStreamData()
if err := f.Set(tcase.params.streamId, tcase.params.data, tcase.params.fin); err != nil {
t.Fatalf("Error while setting params %v!", tcase.params)
}
if err := f.writeTo(trans); err != nil {
t.Fatalf("Error while writing %v!", tcase.params)
}
if !reflect.DeepEqual(tcase.expected, buf.Bytes()) {
t.Errorf("Failed to serialize STREAM_DATA, expected: %v got %v", tcase.expected, buf.Bytes())
}
}
}
func TestDeserializeData(t *testing.T) {
_, trans := loadedTrans([]byte{0x00, 0x10, flagFin, TypeStreamData, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00})
h := newHeader()
if err := h.readFrom(trans); err != nil {
t.Fatalf("Failed to read header")
}
var f RStreamData
f.Header = h
if err := f.readFrom(trans); err != nil {
t.Fatalf("Read failed with %v", err)
}
got, err := ioutil.ReadAll(f.Reader())
if err != nil {
t.Fatalf("Error %v while reading data", err)
}
expected := []byte{0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00}
if !reflect.DeepEqual(expected, got) {
t.Errorf("Wrong bytes read from transport. Expected %v, got %v", expected, got)
}
if !f.Fin() {
t.Errorf("Fin flag was not deserialized")
}
}
func TestTooLongSerializeData(t *testing.T) {
t.Parallel()
var f *WStreamData = NewWStreamData()
if err := f.Set(0, make([]byte, lengthMask+1), true); err == nil {
t.Errorf("Expected error when setting too long buffer, got none.")
}
}
func TestLengthLimitationData(t *testing.T) {
dataLen := 0x4
_, trans := loadedTrans([]byte{0x00, byte(dataLen), 0x0, TypeStreamData, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00})
h := newHeader()
if err := h.readFrom(trans); err != nil {
t.Fatalf("Failed to read header")
}
var f RStreamData
f.Header = h
if err := f.readFrom(trans); err != nil {
t.Fatalf("Read failed with %v", err)
}
got, err := ioutil.ReadAll(f.Reader())
if err != nil {
t.Fatalf("Error %v while reading data", err)
}
if len(got) != dataLen {
t.Errorf("Read with wrong number of bytes, got %d expected %d", len(got), 4)
}
expected := []byte{0xFF, 0xEE, 0xDD, 0xCC}
if !reflect.DeepEqual(expected, got) {
t.Errorf("Wrong bytes read from transport. Expected %v, got %v", expected, got)
}
}
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