b, err := yaml.Marshal(tc.cfg)
			if err != nil {
				t.Fatalf("unexpected error while marshalling to YAML: %v", err)
			}

			cfg, err := BytesToInitConfiguration(b, true)
			if err != nil {
				t.Fatalf("unexpected error of BytesToInitConfiguration: %v\nconfig: %s", err, string(b))
			}

			if tc.expectedTaintCnt != len(cfg.NodeRegistration.Taints) {