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

internal/mqtt/client_test.go

@@ -0,0 +1,92 @@
+package mqtt
+
+import (
+	"io"
+	"log/slog"
+	"testing"
+	"time"
+
+	"github.com/eclipse/paho.golang/paho"
+	"robot-market/test-mqtt-5/internal/config"
+	"robot-market/test-mqtt-5/internal/events"
+)
+
+func TestCopyAndOverflow(t *testing.T) {
+	cfg := config.Defaults()
+	cfg.Limits.InboundQueue = 1
+	c := New(cfg, events.NewStore(4, slog.New(slog.NewTextHandler(io.Discard, nil))))
+	p := &paho.Publish{Topic: Topic(cfg, "acks"), Payload: []byte("payload"), Properties: &paho.PublishProperties{CorrelationData: []byte("id"), MessageExpiry: paho.Uint32(5)}}
+	c.receive(paho.PublishReceived{Packet: p})
+	p.Payload[0] = 'X'
+	p.Properties.CorrelationData[0] = 'X'
+	*p.Properties.MessageExpiry = 99
+	c.receive(paho.PublishReceived{Packet: p})
+	if c.dropped.Load() != 1 {
+		t.Fatal("overflow not counted")
+	}
+	got := <-c.Incoming
+	if string(got.Payload) != "payload" || string(got.Properties.CorrelationData) != "id" || *got.Properties.MessageExpiry != 5 {
+		t.Fatal("callback input was aliased")
+	}
+	p.Topic = "production/topic"
+	c.receive(paho.PublishReceived{Packet: p})
+	if c.invalid.Load() != 1 {
+		t.Fatal("foreign topic not rejected")
+	}
+}
+func TestBoundedBackoff(t *testing.T) {
+	f := Backoff(time.Second, 30*time.Second)
+	for attempt := 0; attempt < 100; attempt++ {
+		for n := 0; n < 10; n++ {
+			d := f(attempt)
+			if d < time.Second || d > 30*time.Second {
+				t.Fatal("backoff outside bounds")
+			}
+		}
+	}
+}
+func TestTLSNeverSkipsVerification(t *testing.T) {
+	cfg := config.Defaults()
+	tc, err := TLSConfig(cfg)
+	if err != nil || tc.InsecureSkipVerify || tc.MinVersion == 0 {
+		t.Fatal("unsafe TLS")
+	}
+}
+
+func TestObservedDeviceTopicIdentity(t *testing.T) {
+	cfg := config.Defaults()
+	cfg.Topics.ObserveDevices = "sim-001, esp32-lab-001,esp32-lab-001"
+	if len(ObservedDevices(cfg)) != 2 {
+		t.Fatal("duplicate subscriptions")
+	}
+	device, kind := Identity(cfg, "robot-market/test/v1/esp32-lab-001/telemetry")
+	if device != "esp32-lab-001" || kind != "telemetry" {
+		t.Fatal("device topic missing")
+	}
+	for _, topic := range []string{"robot-market/test/v1/other/telemetry", "production/esp32-lab-001/telemetry", "robot-market/test/v1/esp32-lab-001/unknown"} {
+		if _, kind := Identity(cfg, topic); kind != "" {
+			t.Fatal("unconfigured topic admitted")
+		}
+	}
+}
+
+func TestRawObservationAdmitsNamespaceWithoutDeviceOrCategoryRestriction(t *testing.T) {
+	cfg := config.Defaults()
+	cfg.Topics.ObserveAll = true
+	c := New(cfg, events.NewStore(8, slog.New(slog.NewTextHandler(io.Discard, nil))))
+	for _, topic := range []string{cfg.Topics.Namespace, cfg.Topics.Namespace + "/custom", cfg.Topics.Namespace + "/new-device/custom-topic"} {
+		c.receive(paho.PublishReceived{Packet: &paho.Publish{Topic: topic, Payload: []byte("not JSON")}})
+		select {
+		case got := <-c.Incoming:
+			if got.Topic != topic {
+				t.Fatal("topic changed")
+			}
+		default:
+			t.Fatal("raw topic filtered")
+		}
+	}
+	c.receive(paho.PublishReceived{Packet: &paho.Publish{Topic: cfg.Topics.Namespace + "-other/device/custom"}})
+	if c.invalid.Load() != 1 {
+		t.Fatal("namespace boundary lost")
+	}
+}