NullPointerException in Email using ImapMailConnector

[TobiasAdler]

Describe the bug During the usage of the imap mail connector a null pointer exception is thrown when using an EmailQuery object to search for an email.

To Reproduce Steps to reproduce the behavior:

1. Use an ImapMailConnector
2. Send & recieve an email
3. Create an EmailQuery object and set a search term
4. Create an Optional of Email and use findFirst() using the query
5. Inside the method readMessageContents() in Email a null pointer exception is thrown in line 166 while accessing the Part object

Expected behavior An Email object should be created and an Optional should be returned.

Actual behavior A null pointer exception is thrown.

Test

EmailQuery query = new EmailQuery().setSearchTerm(new AndTerm(new SubjectTerm("test form"), new BodyTerm(currentDate)));
Optional<Email> foundEmailOptional = imap.query(query).findFirst();

Environment

• Testerra 2.6 (in Testerra 2.4 the code works as expected)