factory_girl

https://github.com/thoughtbot/factory_girl

Ruby

A library for setting up Ruby objects as test data.

Mail::Message#is_marked_for_delete?

Returns whether message will be marked for deletion.
If so, the message will be deleted at session close (i.e. after #find
exits), but only if also using the #find_and_delete method, or by
calling #find with :delete_after_find set to true.

Side-note: Just to be clear, this method will return true even if
the message hasn't yet been marked for delete on the mail server.
However, if this method returns true, it *will be* marked on the
server after each block yields back to #find or #find_and_delete.

Source | Google | Stack overflow

Edit

git clone [email protected]:thoughtbot/factory_girl.git
cd factory_girl
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Mail--Message-is_marked_for_delete--for-pr

# Commit to git

git add git commit -m "better docs for Mail::Message#is_marked_for_delete?"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Mail--Message-is_marked_for_delete--for-pr

hub pull-request

# Celebrate!