Files
hmq/lib/message/pubrel_test.go
zhouyuyan b4ec8ea870 packet
2017-08-22 16:45:01 +08:00

109 lines
2.7 KiB
Go
Executable File

// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package message
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestPubrelMessageFields(t *testing.T) {
msg := NewPubrelMessage()
msg.SetPacketId(100)
require.Equal(t, 100, int(msg.PacketId()))
}
func TestPubrelMessageDecode(t *testing.T) {
msgBytes := []byte{
byte(PUBREL<<4) | 2,
2,
0, // packet ID MSB (0)
7, // packet ID LSB (7)
}
msg := NewPubrelMessage()
n, err := msg.Decode(msgBytes)
require.NoError(t, err, "Error decoding message.")
require.Equal(t, len(msgBytes), n, "Error decoding message.")
require.Equal(t, PUBREL, msg.Type(), "Error decoding message.")
require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
}
// test insufficient bytes
func TestPubrelMessageDecode2(t *testing.T) {
msgBytes := []byte{
byte(PUBREL<<4) | 2,
2,
7, // packet ID LSB (7)
}
msg := NewPubrelMessage()
_, err := msg.Decode(msgBytes)
require.Error(t, err)
}
func TestPubrelMessageEncode(t *testing.T) {
msgBytes := []byte{
byte(PUBREL<<4) | 2,
2,
0, // packet ID MSB (0)
7, // packet ID LSB (7)
}
msg := NewPubrelMessage()
msg.SetPacketId(7)
dst := make([]byte, 10)
n, err := msg.Encode(dst)
require.NoError(t, err, "Error decoding message.")
require.Equal(t, len(msgBytes), n, "Error decoding message.")
require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
}
// test to ensure encoding and decoding are the same
// decode, encode, and decode again
func TestPubrelDecodeEncodeEquiv(t *testing.T) {
msgBytes := []byte{
byte(PUBREL<<4) | 2,
2,
0, // packet ID MSB (0)
7, // packet ID LSB (7)
}
msg := NewPubrelMessage()
n, err := msg.Decode(msgBytes)
require.NoError(t, err, "Error decoding message.")
require.Equal(t, len(msgBytes), n, "Error decoding message.")
dst := make([]byte, 100)
n2, err := msg.Encode(dst)
require.NoError(t, err, "Error decoding message.")
require.Equal(t, len(msgBytes), n2, "Error decoding message.")
require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
n3, err := msg.Decode(dst)
require.NoError(t, err, "Error decoding message.")
require.Equal(t, len(msgBytes), n3, "Error decoding message.")
}