if err != nil {
		t.Fatalf("Create failed: %v", err)
	}
}

func configureTLSCerts(t *testing.T) (certFile, keyFile, caFile string) {
	baseDir := os.TempDir()
	tempDir, err := ioutil.TempDir(baseDir, "etcd_certificates")
	if err != nil {
		t.Fatal(err)
	}
	certFile = path.Join(tempDir, "etcdcert.pem")
	if err := ioutil.WriteFile(certFile, []byte(testingcert.CertFileContent), 0644); err != nil {
		t.Fatal(err)
	}