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disconnect_test.go
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disconnect_test.go
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package mqtt
import (
"bytes"
"testing"
"github.com/srishina/mqtt.go/internal/packettype"
"github.com/stretchr/testify/require"
)
func TestCodecDisconnectPacket(t *testing.T) {
encoded := []byte{0xE0, 0x02,
byte(DisconnectReasonCodeServerShuttingDown), // Reason code
0x00, // no properties
}
reader := bytes.NewBuffer(encoded)
byte0, remainingLength, err := readFixedHeader(reader)
require.NoError(t, err, "Decoding DISCONNECT fixed header returned error")
require.Equal(t, packettype.DISCONNECT, packettype.PacketType(byte0>>4))
require.Equal(t, uint32(0x02), remainingLength)
d := Disconnect{}
err = d.decode(reader, remainingLength)
require.NoError(t, err, "Disconnect.decode returned an error")
require.Equal(t, DisconnectReasonCodeServerShuttingDown, d.ReasonCode)
var buf bytes.Buffer
err = d.encode(&buf)
require.NoError(t, err, "Disconnect.encode returned an error")
if !bytes.Equal(encoded, buf.Bytes()) {
t.Errorf("Disconnect.encode did not return expected bytes %v but %v ", encoded, buf.Bytes())
}
}
func TestCodecDisconnectPacketWithProperties(t *testing.T) {
encoded := []byte{0xE0, 0x07,
byte(DisconnectReasonCodeServerShuttingDown), // Reason code
0x05,
0x11, // SessionIntervalPropertyID
0x00, 0x00, 0x00, 0x05, // session interval = 5
}
reader := bytes.NewBuffer(encoded)
byte0, remainingLength, err := readFixedHeader(reader)
require.NoError(t, err, "Decoding DISCONNECT fixed header returned error")
require.Equal(t, packettype.DISCONNECT, packettype.PacketType(byte0>>4))
require.Equal(t, uint32(0x07), remainingLength)
d := Disconnect{}
err = d.decode(reader, remainingLength)
require.NoError(t, err, "Disconnect.decode returned an error")
require.NotNil(t, d.Properties)
require.NotNil(t, d.Properties.SessionExpiryInterval)
require.Equal(t, uint32(5), *d.Properties.SessionExpiryInterval)
var buf bytes.Buffer
err = d.encode(&buf)
require.NoError(t, err, "Disconnect.encode returned an error")
if !bytes.Equal(encoded, buf.Bytes()) {
t.Errorf("Disconnect.encode did not return expected bytes %v but %v ", encoded, buf.Bytes())
}
}