packet

2026-04-27 03:58:33 +00:00 · 2017-08-22 16:45:01 +08:00
parent 25a9a759f7
commit b4ec8ea870
40 changed files with 5864 additions and 13 deletions
--- a/lib/message/suback_test.go
+++ b/lib/message/suback_test.go
@@ -0,0 +1,134 @@
+// 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 TestSubackMessageFields(t *testing.T) {
+	msg := NewSubackMessage()
+
+	msg.SetPacketId(100)
+	require.Equal(t, 100, int(msg.PacketId()), "Error setting packet ID.")
+
+	msg.AddReturnCode(1)
+	require.Equal(t, 1, len(msg.ReturnCodes()), "Error adding return code.")
+
+	err := msg.AddReturnCode(0x90)
+	require.Error(t, err)
+}
+
+func TestSubackMessageDecode(t *testing.T) {
+	msgBytes := []byte{
+		byte(SUBACK << 4),
+		6,
+		0,    // packet ID MSB (0)
+		7,    // packet ID LSB (7)
+		0,    // return code 1
+		1,    // return code 2
+		2,    // return code 3
+		0x80, // return code 4
+	}
+
+	msg := NewSubackMessage()
+	n, err := msg.Decode(msgBytes)
+
+	require.NoError(t, err, "Error decoding message.")
+	require.Equal(t, len(msgBytes), n, "Error decoding message.")
+	require.Equal(t, SUBACK, msg.Type(), "Error decoding message.")
+	require.Equal(t, 4, len(msg.ReturnCodes()), "Error adding return code.")
+}
+
+// test with wrong return code
+func TestSubackMessageDecode2(t *testing.T) {
+	msgBytes := []byte{
+		byte(SUBACK << 4),
+		6,
+		0,    // packet ID MSB (0)
+		7,    // packet ID LSB (7)
+		0,    // return code 1
+		1,    // return code 2
+		2,    // return code 3
+		0x81, // return code 4
+	}
+
+	msg := NewSubackMessage()
+	_, err := msg.Decode(msgBytes)
+
+	require.Error(t, err)
+}
+
+func TestSubackMessageEncode(t *testing.T) {
+	msgBytes := []byte{
+		byte(SUBACK << 4),
+		6,
+		0,    // packet ID MSB (0)
+		7,    // packet ID LSB (7)
+		0,    // return code 1
+		1,    // return code 2
+		2,    // return code 3
+		0x80, // return code 4
+	}
+
+	msg := NewSubackMessage()
+	msg.SetPacketId(7)
+	msg.AddReturnCode(0)
+	msg.AddReturnCode(1)
+	msg.AddReturnCode(2)
+	msg.AddReturnCode(0x80)
+
+	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 TestSubackDecodeEncodeEquiv(t *testing.T) {
+	msgBytes := []byte{
+		byte(SUBACK << 4),
+		6,
+		0,    // packet ID MSB (0)
+		7,    // packet ID LSB (7)
+		0,    // return code 1
+		1,    // return code 2
+		2,    // return code 3
+		0x80, // return code 4
+	}
+
+	msg := NewSubackMessage()
+	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.")
+}