Deploy MQTT test backend with private viewer and Gitea CI/CD

internal/backend/receipts_test.go

@@ -0,0 +1,108 @@
+package backend
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/eclipse/paho.golang/paho"
+	"robot-market/test-mqtt-5/internal/events"
+)
+
+func TestReceiptRawPayloadRoutingAndCorrelation(t *testing.T) {
+	b := testBackend()
+	b.Client.Config.Topics.ObserveAll = true
+	for _, payload := range []string{"hello", "", "[1,2]", `{"device_id":"different","timestamp":"{{$isoTimestamp}}","message_id":"msg-1"}`} {
+		reply := b.receipt(&paho.Publish{Topic: "robot-market/test/v1/real-device/telemetry", Payload: []byte(payload)})
+		if reply == nil || reply.Topic != "robot-market/test/v1/real-device/acks" || reply.Retain || reply.QoS != 1 {
+			t.Fatal("missing/routed/retained reply")
+		}
+		var ack ReceiptAck
+		if json.Unmarshal(reply.Payload, &ack) != nil || !ack.OK || ack.Type != "receipt_ack" || ack.PayloadBytes != len(payload) || len(ack.PayloadSHA256) != 64 {
+			t.Fatal("invalid receipt")
+		}
+	}
+	p := &paho.Publish{Topic: "robot-market/test/v1/device/telemetry", Payload: []byte("x"), Properties: &paho.PublishProperties{ResponseTopic: "robot-market/test/v1/replies/custom", CorrelationData: []byte{0, 255, 1}}}
+	reply := b.receipt(p)
+	p.Properties.CorrelationData[0] = 99
+	if reply.Topic != "robot-market/test/v1/replies/custom" || reply.Properties.CorrelationData[0] != 0 || reply.Properties.ResponseTopic != "" {
+		t.Fatal("native response/correlation lost or aliased")
+	}
+	p.Properties.ResponseTopic = "outside/test"
+	if b.receipt(p).Topic != "robot-market/test/v1/device/acks" {
+		t.Fatal("unusable response topic should use default receipt topic")
+	}
+}
+
+func TestReceiptLoopAndRetainedReplayPrevention(t *testing.T) {
+	b := testBackend()
+	b.Client.Config.Topics.ObserveAll = true
+	for _, topic := range []string{"acks", "commands", "receipts"} {
+		if b.receipt(&paho.Publish{Topic: "robot-market/test/v1/device/" + topic, Payload: []byte("hello")}) != nil {
+			t.Fatal("ACK loop possible")
+		}
+	}
+	for _, p := range []*paho.Publish{
+		{Topic: "robot-market/test/v1/device/status", Retain: true, Payload: []byte("online")},
+		{Topic: "robot-market/test/v1/custom/topic", Payload: []byte(`{"type":"receipt_ack","ok":true}`)},
+		{Topic: "outside/device/topic", Payload: []byte("hello")},
+	} {
+		if b.receipt(p) != nil {
+			t.Fatal("reply created for replay, receipt or external topic")
+		}
+	}
+}
+
+func TestReceiptDuplicateDeliveryRepliesWithoutCommandExecution(t *testing.T) {
+	b := testBackend()
+	b.Client.Config.Topics.ObserveAll = true
+	b.Client.Config.Receipts.Enabled = true
+	p := &paho.Publish{Topic: "robot-market/test/v1/device/telemetry", Payload: []byte("same message")}
+	b.Handle(p)
+	b.Handle(p)
+	if len(b.receipts) != 2 || len(b.pending) != 0 {
+		t.Fatal("duplicate receipt handling must not execute commands")
+	}
+}
+
+func TestReceiptQueueFailureAndShutdown(t *testing.T) {
+	b := testBackend()
+	b.Client.Config.Topics.ObserveAll = true
+	b.Client.Config.Receipts.Enabled = true
+	b.receipts = make(chan *paho.Publish, 1)
+	p := &paho.Publish{Topic: "robot-market/test/v1/device/telemetry", Payload: []byte("hello")}
+	b.Handle(p)
+	b.Handle(p)
+	_, counts := b.Client.Events.Snapshot()
+	if counts[events.Kind("receipt_ack_dropped")] != 1 {
+		t.Fatal("queue overflow invisible")
+	}
+	b.PublishReceipt = func(context.Context, *paho.Publish) error { return errors.New("test disconnect") }
+	ctx, cancel := context.WithCancel(context.Background())
+	done := make(chan struct{})
+	go func() { b.receiptWorker(ctx); close(done) }()
+	deadline := time.Now().Add(time.Second)
+	for {
+		_, counts = b.Client.Events.Snapshot()
+		if counts[events.Kind("receipt_ack_failed")] == 1 {
+			break
+		}
+		if time.Now().After(deadline) {
+			t.Fatal("failure not recorded")
+		}
+		time.Sleep(time.Millisecond)
+	}
+	cancel()
+	select {
+	case <-done:
+	case <-time.After(time.Second):
+		t.Fatal("worker shutdown blocked")
+	}
+	history, _ := b.Client.Events.Snapshot()
+	if !strings.Contains(history[len(history)-1].Outcome, "not confirmed") {
+		t.Fatal("failure claims success")
+	}
+}