layer1: test namespace manager summary logging

pkg/utils/namespace_manager_test.go

@@ -562,6 +562,26 @@ func TestNamespaceManagerSummary(t *testing.T) {
 	}
 }
 
+func TestLogNamespaceManagerSummary(t *testing.T) {
+	LogNamespaceManagerSummary(nil, "ignored", NamespaceManagerSummary{})
+
+	logger := zap.NewNop()
+	summary := NamespaceManagerSummary{
+		TotalNamespaces: 2,
+		LiveNamespaces:  1,
+		PhaseCounts: map[NamespacePhase]int{
+			NamespacePhaseActive: 1,
+			NamespacePhaseRemoved: 1,
+		},
+		SourceCounts: map[NamespaceSource]int{
+			NamespaceSourceWatcher: 1,
+			NamespaceSourceEnv:     1,
+		},
+		Subscribers: []string{"router", "buildermgr"},
+	}
+
+	LogNamespaceManagerSummary(logger, "namespace summary", summary)
+}
 func TestLogNamespaceManagerSummaryWithNilLogger(t *testing.T) {
 	LogNamespaceManagerSummary(nil, "ignored", NamespaceManagerSummary{TotalNamespaces: 1})
 }