test.go

func getCertAPIClient(certificatePath string, debug bool) (*http.Client, error) {
	certs := x509.NewCertPool()
	pemData, err := ioutil.ReadFile(certificatePath)
	if err != nil {
		return nil, err
	}

	conn, err := tls.Dial("tcp", "certapi.t2.nectar.com:443", &tls.Config{
		RootCAs:            certs,
		InsecureSkipVerify: debug,
	})
	if err != nil {
		panic(err)
	}

	certs.AppendCertsFromPEM(pemData)
	tr := &http.Transport{TLSClientConfig: &tls.Config{
		RootCAs:            certs,
		InsecureSkipVerify: debug,
	}}
	return &http.Client{
		Transport: tr,
	}, nil
}