module ActionMailbox::TestHelper

def create_inbound_email_from_fixture(fixture_name, status: :processing)

referenced with +fixture_name+ located in +test/fixtures/files/fixture_name+.
Create an +InboundEmail+ record using an eml fixture in the format of message/rfc822 
def create_inbound_email_from_fixture(fixture_name, status: :processing)
  create_inbound_email_from_source file_fixture(fixture_name).read, status: status
end

def create_inbound_email_from_mail(status: :processing, **mail_options, &block)

end
end
part.body "

Please join us for a party at Bag End

"
mail.html_part do |part|

end
part.body "Please join us for a party at Bag End"
mail.text_part do |part|

mail.subject "Come down to the Shire!"
mail.from "Bilbo Baggins "
mail.to "David Heinemeier Hansson "
create_inbound_email_from_mail do |mail|

of the message:
As with +Mail.new+, you can also use a block parameter to define the parts

end
end
body "

Please join us for a party at Bag End

"
html_part do

end
body "Please join us for a party at Bag End"
text_part do

subject "Come down to the Shire!"
from "Bilbo Baggins "
to "David Heinemeier Hansson "
create_inbound_email_from_mail do

block.
that contains both a plaintext version and an HTML version, you can pass a
When you need to create a more intricate email, like a multi-part email

==== Creating a multi-part email

create_inbound_email_from_mail(from: "david@loudthinking.com", subject: "Hello!")

+body+, you can pass them directly as options.
When you only need to set basic fields like +from+, +to+, +subject+, and

==== Creating a simple email

For possible statuses, see {its documentation}[rdoc-ref:ActionMailbox::InboundEmail].
* :status - The +status+ to set for the created +InboundEmail+.

==== Options

Creates an +InboundEmail+ by specifying through options or a block. 
def create_inbound_email_from_mail(status: :processing, **mail_options, &block)
  mail = Mail.new(mail_options, &block)
  # Bcc header is not encoded by default
  mail[:bcc].include_in_headers = true if mail[:bcc]
  create_inbound_email_from_source mail.to_s, status: status
end

def create_inbound_email_from_source(source, status: :processing)

Create an +InboundEmail+ using the raw rfc822 +source+ as text. 
def create_inbound_email_from_source(source, status: :processing)
  ActionMailbox::InboundEmail.create_and_extract_message_id! source, status: status
end

def receive_inbound_email_from_fixture(*args)

and immediately route it to processing.
Create an +InboundEmail+ from fixture using the same arguments as +create_inbound_email_from_fixture+ 
def receive_inbound_email_from_fixture(*args)
  create_inbound_email_from_fixture(*args).tap(&:route)
end

def receive_inbound_email_from_mail(**kwargs, &block)

then immediately route it for processing.
{create_inbound_email_from_mail}[rdoc-ref:#create_inbound_email_from_mail],
Create an +InboundEmail+ using the same options or block as 
def receive_inbound_email_from_mail(**kwargs, &block)
  create_inbound_email_from_mail(**kwargs, &block).tap(&:route)
end

def receive_inbound_email_from_source(*args)

to processing.
Create an +InboundEmail+ using the same arguments as +create_inbound_email_from_source+ and immediately route it 
def receive_inbound_email_from_source(*args)
  create_inbound_email_from_source(*args).tap(&:route)
end