Issue #1: Add support for nested multipart messages

src/main/java/net/kemitix/wiser/assertions/WiserAssertions.java

@@ -269,7 +269,13 @@ public final class WiserAssertions {
             throws MessagingException, IOException {
         final StringBuilder sb = new StringBuilder();
         for (int i = 0; i < mimeMultipart.getCount(); i++) {
-            sb.append(mimeMultipart.getBodyPart(i).getContent());
+            Object content = mimeMultipart.getBodyPart(i).getContent();
+
+            if (content instanceof MimeMultipart) {
+                sb.append(getMimeMultipartAsString((MimeMultipart) content));
+            } else {
+                sb.append(content);
+            }
         }
         return sb.toString();
     }

src/test/java/net/kemitix/wiser/assertions/AbstractWiserTest.java

@@ -54,6 +54,7 @@ public abstract class AbstractWiserTest {
 
     protected Session getSession() {
         Properties properties = new Properties();
+        properties.setProperty("mail.transport.protocol", "smtp");
         properties.setProperty("mail.smtp.host", "localhost");
         properties.setProperty("mail.smtp.port", "" + WiserAssertionsTest.PORT);
         Session session = Session.getDefaultInstance(properties);

src/test/java/net/kemitix/wiser/assertions/Issue1Test.java

@@ -14,24 +14,24 @@ import javax.mail.Message;
  */
 public class Issue1Test extends AbstractWiserTest {
 
+    /**
+     * Test {@link WiserAssertions#withContentContains(String)} where
+     * the nested multipart message contains the expected text
+     */
     @Test
     public void shouldParseNestedMultiPartEmails() {
         //given
         final Email email = new Email();
-        email.addRecipient("Jonjo McKay", "jonjo.mckay@manywho.com",
+        email.addRecipient("Carl", "carl@b.com",
                 Message.RecipientType.TO);
-        email.setFromAddress("ManyWho", "no-reply@manywho.com");
-        email.setSubject("New activity");
-        email.setText("Hi Jonjo McKay,\n\nA new message was just posted in a "
-                + "stream you follow on ManyWho. The message was:\n\nLance "
-                + "Drake Mandrell: \"This is a test message\"\n\nJoin the flow "
-                + "at https://flow.manywho.com to read the stream and reply.\n"
-                + "\nManyWho Email Bot");
+        email.setFromAddress("Bob", "bob@a.com");
+        email.setSubject("Subject");
+        email.setText("Hi Carl,\n\nA new message was just posted.");
         Mailer mailer = new Mailer(getSession());
         //when
         mailer.sendMail(email);
         //then
-        getAssertions().withContent("Hi Jonjo McKay");
+        getAssertions().withContentContains("Hi Carl");
     }
 
 }