feat: add admin console, Redis broker and chaos lab for training demo

broker_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+func TestLocalBroker(t *testing.T) {
+	b := NewBroker("host-a", "1.0.0")
+	ch := b.Subscribe()
+	defer b.Unsubscribe(ch)
+
+	if ev := <-ch; ev.Type != "presence" || ev.Online != 1 {
+		t.Fatalf("want presence=1 on subscribe, got %+v", ev)
+	}
+
+	b.Publish(Event{Type: "deleted", ID: 7})
+	select {
+	case ev := <-ch:
+		if ev.Type != "deleted" || ev.ID != 7 {
+			t.Fatalf("unexpected event %+v", ev)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("published event not delivered")
+	}
+
+	if r := b.Replicas(); len(r) != 1 || r[0].Host != "host-a" || r[0].Online != 1 {
+		t.Fatalf("unexpected replicas %+v", r)
+	}
+	if b.Mode() != "local" {
+		t.Fatalf("mode = %s", b.Mode())
+	}
+}