はじめに

ローカルでsmpメールをテストする方法を紹介致します。

docker

docker run -p 80:80 -p 25:25 maildev/maildev

build.gradle

dependencies {
...
   implementation 'org.springframework.boot:spring-boot-starter-mail'
}

test {
...
   String activeProfile = System.properties['spring.profiles.active']
   println "zone: $activeProfile"
   systemProperty "spring.profiles.active", activeProfile
}

config

@Slf4j
@Configuration
public class CoreConfigration {


    @Value("${projects.properties.email-host}")
    String emailHost;

    @Value("${projects.properties.email-protocal}")
    String emailProtocal;

    @Value("${projects.properties.email-port}")
    int emailPort;

    @Bean
    public JavaMailSenderImpl mailSender() {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
        javaMailSender.setProtocol(emailProtocal);
        javaMailSender.setHost(emailHost);
        javaMailSender.setPort(emailPort);
        return javaMailSender;
    }
...


}

yaml

spring:
  profiles: local

projects:
  properties:
    email-host: localhost
    email-port: 25
    email-protocal: smtp
    email-from: serviceteam@company.com

mailservice

@Service
public class MailService {

    @Autowired
    @Qualifier("mailSender")
    JavaMailSenderImpl javaMailSender;

    @Value("${projects.properties.email-from}")
    String from;


    public void sendHtml(String to, String subject, String content) throws MessagingException {
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
        messageHelper.setFrom(from);
        messageHelper.setTo(to);
        messageHelper.setSubject(subject);
        messageHelper.setText(content, true);
        javaMailSender.send(mimeMessage);
    }}

test

@SpringBootTest(classes = {ServiceMonitorApplication.class, MailService.class, JavaMailSenderImpl.class, ProjectProperties.class}, webEnvironment= SpringBootTest.WebEnvironment.RANDOM_PORT)
@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
@Slf4j
class MailServiceTest {

    @Autowired
    MailService mailService;

    @Autowired
    ProjectProperties projectProperties;

    @Test
    public void test() throws MessagingException {
        mailService.sendHtml(
                "asd@asd.net",
                "こんにちは",
                "<b>Asdasd</b> <a href='http://google.con'> google</a>"
        );
    }
}

実行

spring test start

-Dspring.profiles.active=local 

gradle :test --tests "com.....MailServiceTest.test" -Dspring.profiles.active=local'