vpnem: VPN infrastructure with load-balanced multi-protocol nodesHEADmain

- Multi-protocol VPS nodes (VLESS-REALITY + Hysteria2 + SOCKS5)
- Smart load balancing via recommendation API
- Windows/Linux client (Go + Wails + sing-box)
- Server API with RealIP detection and connection tracking
- Auto-deployment via vpnui control plane
- Silent Windows installer with UAC elevation
- Load-based server recommendation (no sticky sessions)
- Best Server one-click connection workflow

1 files changed, 55 insertions, 0 deletions

diff --git a/internal/control/upgrade_test.go b/internal/control/upgrade_test.go
new file mode 100644
index 0000000..c3e5404
--- /dev/null
+++ b/internal/control/upgrade_test.go
@@ -0,0 +1,55 @@
+package control
+
+import (
+	"context"
+	"strings"
+	"testing"
+)
+
+type fakeRunner struct{}
+
+func (fakeRunner) Run(ctx context.Context, node Node, script string) (*CommandResult, error) {
+	if strings.Contains(script, "HEALTHZ_HTTP_CODE=") {
+		return &CommandResult{
+			Stdout: "{\"Service\":\"sing-box\",\"Status\":\"running\"}\nHEALTHZ_HTTP_CODE=200\n",
+		}, nil
+	}
+	return &CommandResult{Stdout: "ok\n"}, nil
+}
+
+func (fakeRunner) Check(ctx context.Context, node Node) (*CommandResult, error) {
+	return &CommandResult{Stdout: "ok"}, nil
+}
+
+func (fakeRunner) CopyFile(ctx context.Context, node Node, localPath, remotePath string) error {
+	return nil
+}
+
+func TestUpgradeNode(t *testing.T) {
+	t.Parallel()
+
+	state, err := UpgradeNode(context.Background(), fakeRunner{}, Node{
+		ID:      "nl-01",
+		Name:    "NL 01",
+		Region:  "nl",
+		Host:    "203.0.113.10",
+		Domain:  "nl-01.example.com",
+		Enabled: true,
+		SSH:     SSHConfig{User: "root", Port: 22, Auth: "key", IdentityFile: "~/.ssh/id_ed25519"},
+		Protocols: []ProtocolProfile{
+			{Type: "vless", Enabled: true, Port: 443, TLS: &TLSProfile{Enabled: true, ServerName: "nl-01.example.com"}, Auth: &AuthProfile{UUID: "11111111-1111-1111-1111-111111111111"}, Extra: map[string]any{"path": "/ws"}},
+		},
+	}, t.TempDir())
+	if err != nil {
+		t.Fatalf("UpgradeNode() error = %v", err)
+	}
+	if state == nil {
+		t.Fatal("expected state")
+	}
+	if state.BootstrapStatus != "healthy" {
+		t.Fatalf("BootstrapStatus = %q, want healthy", state.BootstrapStatus)
+	}
+	if got := state.Metadata["lifecycle_action"]; got != "upgrade" {
+		t.Fatalf("lifecycle_action = %v, want upgrade", got)
+	}
+}