feat(M6): token-ring incremental log sync — append-only op log, delta rides token round-2, nodes converge on identical history (e2e verified join events)

internal/cluster/token_transport_test.go

@@ -0,0 +1,66 @@
+package cluster
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+// TestTokenTransportPOST verifies a token serializes over HTTP POST to the
+// peer endpoint and receives 2xx.
+func TestTokenTransportPOST(t *testing.T) {
+	var got Token
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/api/manager/cluster/token" {
+			http.NotFound(w, r)
+			return
+		}
+		if err := json.NewDecoder(r.Body).Decode(&got); err != nil {
+			http.Error(w, "bad token", http.StatusBadRequest)
+			return
+		}
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	tr := &TokenTransport{User: "u", Pass: "p"}
+	host := srv.Listener.Addr().String()
+	send := tr.SendTo(func(nodeID string) string { return host })
+	err := send(context.Background(), "peer1", &Token{Cycle: 3, Phase: PhaseCollect})
+	if err != nil {
+		t.Fatalf("send: %v", err)
+	}
+	if got.Cycle != 3 || got.Phase != PhaseCollect {
+		t.Fatalf("got token = %+v", got)
+	}
+}
+
+// TestTokenTransportHeartbeat verifies a nil-token ping (leader heartbeat).
+func TestTokenTransportHeartbeat(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/api/manager/cluster/token" {
+			http.NotFound(w, r)
+			return
+		}
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+	tr := &TokenTransport{User: "u", Pass: "p"}
+	if err := tr.HeartbeatPing(context.Background(), srv.Listener.Addr().String()); err != nil {
+		t.Fatalf("heartbeat: %v", err)
+	}
+}
+
+// TestTokenTransportError verifies non-2xx -> error (dead peer detection).
+func TestTokenTransportError(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.Error(w, "gone", http.StatusServiceUnavailable)
+	}))
+	defer srv.Close()
+	tr := &TokenTransport{User: "u", Pass: "p"}
+	if err := tr.HeartbeatPing(context.Background(), srv.Listener.Addr().String()); err == nil {
+		t.Fatal("expected error on 503")
+	}
+}