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suback_test.go
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suback_test.go
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// Copyright (c) 2014 Dataence, LLC. 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 mqtt
import (
"bytes"
"testing"
"github.com/dataence/assert"
)
func TestSubackMessageFields(t *testing.T) {
msg := NewSubackMessage()
msg.SetPacketId(100)
assert.Equal(t, true, 100, msg.PacketId(), "Error setting packet ID.")
msg.AddReturnCode(1)
assert.Equal(t, true, 1, len(msg.ReturnCodes()), "Error adding return code.")
err := msg.AddReturnCode(0x90)
assert.Error(t, true, 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
}
src := bytes.NewBuffer(msgBytes)
msg := NewSubackMessage()
n, err := msg.Decode(src)
assert.NoError(t, true, err, "Error decoding message.")
assert.Equal(t, true, len(msgBytes), n, "Error decoding message.")
assert.Equal(t, true, SUBACK, msg.Type(), "Error decoding message.")
assert.Equal(t, true, 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
}
src := bytes.NewBuffer(msgBytes)
msg := NewSubackMessage()
_, err := msg.Decode(src)
assert.Error(t, true, 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, n, err := msg.Encode()
assert.NoError(t, true, err, "Error decoding message.")
assert.Equal(t, true, len(msgBytes), n, "Error decoding message.")
assert.Equal(t, true, msgBytes, dst.(*bytes.Buffer).Bytes(), "Error decoding message.")
}