refactor: stabilize runtime and unify config

pkg/bus/bus_test.go

@@ -0,0 +1,61 @@
+package bus
+
+import (
+	"context"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestMessageBusPublishAfterCloseDoesNotPanic(t *testing.T) {
+	t.Parallel()
+
+	mb := NewMessageBus()
+	mb.Close()
+
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		mb.PublishInbound(InboundMessage{Channel: "test"})
+		mb.PublishOutbound(OutboundMessage{Channel: "test"})
+	}()
+
+	select {
+	case <-done:
+	case <-time.After(2 * time.Second):
+		t.Fatal("publish after close blocked")
+	}
+}
+
+func TestMessageBusCloseWhilePublishingDoesNotPanic(t *testing.T) {
+	t.Parallel()
+
+	mb := NewMessageBus()
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	go func() {
+		for {
+			if _, ok := mb.ConsumeInbound(ctx); !ok {
+				return
+			}
+		}
+	}()
+
+	var wg sync.WaitGroup
+	for i := 0; i < 8; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < 50; j++ {
+				mb.PublishInbound(InboundMessage{Channel: "test"})
+				mb.PublishOutbound(OutboundMessage{Channel: "test"})
+			}
+		}()
+	}
+
+	time.Sleep(20 * time.Millisecond)
+	mb.Close()
+	cancel()
+	wg.Wait()
+}