added test case for sending mails

network/src/test/java/de/muehlencord/shared/network/mail/TestSendMail.java

@@ -0,0 +1,108 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package de.muehlencord.shared.network.mail;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Properties;
+import javax.mail.Message;
+import javax.mail.MessagingException;
+import javax.mail.Multipart;
+import javax.mail.PasswordAuthentication;
+import javax.mail.Session;
+import javax.mail.Transport;
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeBodyPart;
+import javax.mail.internet.MimeMessage;
+import javax.mail.internet.MimeMultipart;
+import org.junit.Assume;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ *
+ * @author Joern Muehlencord <joern at muehlencord.de>
+ */
+public class TestSendMail {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(TestSendMail.class);
+    
+    private final static String RECEIVER = null;
+    private final static String PASSWORD = null;
+
+    @Test
+    public void testSendEmail() throws AddressException, MessagingException, IOException {
+        
+        Assume.assumeFalse(RECEIVER == null);
+        Assume.assumeFalse(PASSWORD == null);
+        
+        Properties props = new Properties();
+        props.put("mail.smtp.host", "jomu.timelord.de");
+        props.put("mail.smtp.auth", true);
+        props.put("mail.smtp.starttls.enable", true);
+        props.put("mail.smtp.host", "jomu.timelord.de");
+        props.put("mail.smtp.port", "587");
+        props.put("mail.debug", "true");
+
+        Session mailSession = Session.getInstance(props, new javax.mail.Authenticator() {
+            @Override
+            protected PasswordAuthentication getPasswordAuthentication() {
+                return new PasswordAuthentication(RECEIVER, PASSWORD);
+            }
+        });
+
+        MimeMessage message = new MimeMessage(mailSession);
+        InternetAddress[] address = InternetAddress.parse("joern@muehlencord.de", false);
+        message.setFrom(address[0]);
+        message.setRecipients(Message.RecipientType.TO, address);
+
+        message.setSubject("Test HTML, Plan und Attachment", "UTF-8");
+
+        String htmlBody = "<h1>Das ist ein Test</h1>";
+        MimeBodyPart htmlBodyPart = new MimeBodyPart();
+        htmlBodyPart.setContent(htmlBody, "text/html; charset=UTF-8");
+
+        String plainBody = "Das ist ein Test";
+        MimeBodyPart plainBodyPart = new MimeBodyPart();
+        plainBodyPart.setText(plainBody, "UTF-8");
+
+        Multipart multipart = new MimeMultipart("alternative");
+        multipart.addBodyPart(plainBodyPart);
+        multipart.addBodyPart(htmlBodyPart);
+
+        MimeBodyPart content = new MimeBodyPart();
+        content.setContent(multipart);
+
+        // add all attachments
+        List<File> attachments = new ArrayList<>();
+        attachments.add(new File("/home/jomu/youtube.txt"));
+        attachments.add(new File("/home/jomu/vvh-contracts.sql"));
+        MimeMultipart wrapper = new MimeMultipart("related");
+        wrapper.addBodyPart(content);
+
+        for (File attachment : attachments) {
+            MimeBodyPart attachmentBodyPart = new MimeBodyPart();
+            attachmentBodyPart.attachFile(attachment);
+            String contentType = Files.probeContentType(attachment.toPath());
+            if (contentType != null) {
+                attachmentBodyPart.setHeader("Content-Type", contentType); 
+            }
+            wrapper.addBodyPart(attachmentBodyPart);
+        }
+
+        message.setContent(wrapper);
+        message.setSentDate(new Date());
+        Transport.send(message);
+        String messageId = message.getHeader("Message-ID")[0];
+        LOGGER.info("Message-Id = {}", messageId);
+    }
+}