email-sender/pkg/email/mock.go

package email

import (
	"crypto/tls"
	"io"
	"net/smtp"
)

type MockCallbackFn func(params ...interface{})

func NewMockMailService(callbackFn MockCallbackFn, params ...interface{}) *EmailService {
	return &EmailService{
		auth: smtp.PlainAuth("", "", "", ""),
		host: "",
		port: "",
		from: "",
		tlsconfig: &tls.Config{
			InsecureSkipVerify: true,
			ServerName:         "",
		},
		dial: func(hostPort string) (SMTPClientIface, error) {
			callbackFn(params)
			return &mockSMTP{}, nil
		},
	}

}

type mockWriter struct{}

func (w *mockWriter) Close() error {
	return nil
}
func (w *mockWriter) Write(p []byte) (n int, err error) {
	return 10, nil
}

// Mock SMTP Client
type mockSMTP struct{}

func (m *mockSMTP) StartTLS(*tls.Config) error {
	return nil
}
func (m *mockSMTP) Auth(a smtp.Auth) error {
	return nil
}
func (m *mockSMTP) Close() error {
	return nil
}
func (m *mockSMTP) Data() (io.WriteCloser, error) {
	return &mockWriter{}, nil
}
func (m *mockSMTP) Mail(from string) error {
	return nil
}
func (m *mockSMTP) Quit() error {
	return nil
}
func (m *mockSMTP) Rcpt(to string) error {
	return nil
}