expected = "user1@example.com -> user1@example.net\n" ++
"user2@example.com -> user1@example.org\n" ++
"user2@example.com -> user2@example.org\n" ++
- "user2@example.com -> user3@example.org\n"
+ "user2@example.com -> user3@example.org\n" ++
+ "user7@example.com -> user8@example.net\n"