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// SPDX-FileCopyrightText: 2020 Ethel Morgan
//
// SPDX-License-Identifier: MIT
package catbus
import (
"fmt"
"log"
"reflect"
"testing"
"time"
mqtt "github.com/eclipse/paho.mqtt.golang"
)
type (
message struct {
retention Retention
payload []byte
}
)
func TestOnConnect(t *testing.T) {
tests := []struct {
payloadByTopic map[string][]byte
subscribe []string
receive map[string]message
want map[string][]byte
}{
{
payloadByTopic: map[string][]byte{
"tv/power": []byte("off"),
},
want: map[string][]byte{
"tv/power": []byte("off"),
},
},
{
payloadByTopic: map[string][]byte{
"tv/power": []byte("off"),
},
subscribe: []string{
"tv/power",
},
receive: map[string]message{
"tv/power": {Retain, []byte("on")},
},
want: map[string][]byte{
"tv/power": []byte("on"),
},
},
{
subscribe: []string{
"tv/power",
},
receive: map[string]message{
"tv/power": {Retain, []byte("on")},
},
want: map[string][]byte{
"tv/power": []byte("on"),
},
},
{
payloadByTopic: map[string][]byte{
"tv/power": []byte("off"),
},
subscribe: []string{
"tv/power",
},
receive: map[string]message{
"tv/power": {DontRetain, []byte("on")},
},
want: map[string][]byte{
"tv/power": []byte("on"),
},
},
{
subscribe: []string{
"tv/power",
},
receive: map[string]message{
"tv/power": {DontRetain, []byte("on")},
},
want: map[string][]byte{},
},
{
payloadByTopic: map[string][]byte{
"tv/power": []byte("off"),
},
subscribe: []string{
"tv/power",
},
receive: map[string]message{
"tv/power": {DontRetain, []byte{}},
},
want: map[string][]byte{},
},
}
for i, tt := range tests {
fakeMQTT := &fakeMQTT{
callbackByTopic: map[string]mqtt.MessageHandler{},
payloadByTopic: map[string][]byte{},
}
catbus := &Client{
mqtt: fakeMQTT,
payloadByTopic: map[string][]byte{},
onconnectTimerByTopic: map[string]*time.Timer{},
onconnectDelay: 1 * time.Millisecond,
onconnectJitter: 1,
}
if tt.payloadByTopic != nil {
catbus.payloadByTopic = tt.payloadByTopic
}
for _, topic := range tt.subscribe {
catbus.Subscribe(topic, func(_ *Client, _ Message) {})
}
for topic, message := range tt.receive {
fakeMQTT.send(topic, message.retention, message.payload)
}
catbus.stopAllTimers()
catbus.startAllTimers()
// TODO: replace with proper channel signaling or sth.
time.Sleep(1 * time.Second)
got := fakeMQTT.payloadByTopic
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("[%d]: got %v, want %v", i, got, tt.want)
}
}
}
type (
fakeMQTT struct {
mqtt.Client
callbackByTopic map[string]mqtt.MessageHandler
payloadByTopic map[string][]byte
}
fakeMessage struct {
mqtt.Message
topic string
retained bool
payload []byte
}
fakeToken struct{}
)
func (f *fakeMQTT) Publish(topic string, qos byte, retain bool, payload interface{}) mqtt.Token {
bytes, ok := payload.([]byte)
if !ok {
panic(fmt.Sprintf("expected type []byte, got %v", reflect.TypeOf(payload)))
}
log.Printf("topic %q payload %s", topic, payload)
f.payloadByTopic[topic] = bytes
return &fakeToken{}
}
func (f *fakeMQTT) Subscribe(topic string, qos byte, callback mqtt.MessageHandler) mqtt.Token {
f.callbackByTopic[topic] = callback
return &fakeToken{}
}
func (f *fakeMQTT) send(topic string, retention Retention, payload []byte) {
// if retention == Retain {
// f.payloadByTopic[topic] = payload
// }
if callback, ok := f.callbackByTopic[topic]; ok {
msg := &fakeMessage{
topic: topic,
retained: bool(retention),
payload: payload,
}
callback(f, msg)
}
}
func (f *fakeMessage) Topic() string {
return f.topic
}
func (f *fakeMessage) Payload() []byte {
return f.payload
}
func (f *fakeMessage) Retained() bool {
return f.retained
}
func (_ *fakeToken) Wait() bool {
return false
}
func (_ *fakeToken) WaitTimeout(_ time.Duration) bool {
return false
}
func (_ *fakeToken) Error() error {
return nil
}
|
