cert:          validKubeadmCert,
			},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := createKeyAndCSR(tt.args.kubeadmConfig, tt.args.cert); (err != nil) != tt.wantErr {
				t.Errorf("createKeyAndCSR() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestGetConfig(t *testing.T) {
	var (
		now      = time.Now()

	if err != nil {
		return nil, err
	}

	var out Certificates
	for _, leafCertificates := range certTree {
		out = append(out, leafCertificates...)
	}
	return out, nil
}

func createKeyAndCSR(kubeadmConfig *kubeadmapi.InitConfiguration, cert *KubeadmCert) error {
	if kubeadmConfig == nil {
		return errors.Errorf("%s: kubeadmConfig was nil", errInvalid)
	}
	if cert == nil {