assert_emails(number, &block) public

Asserts that the number of emails sent matches the given number.

def test_emails
  assert_emails 0
  ContactMailer.welcome.deliver_now
  assert_emails 1
  ContactMailer.welcome.deliver_now
  assert_emails 2
end

If a block is passed, that block should cause the specified number of emails to be sent.

def test_emails_again
  assert_emails 1 do
    ContactMailer.welcome.deliver_now
  end

  assert_emails 2 do
    ContactMailer.welcome.deliver_now
    ContactMailer.welcome.deliver_later
  end
end
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May 6, 2011
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Asserting Emails

–setup_mailer.rb in config/initializers –rails g mailer MailerName –methods in mailer_name.rb –files in views/mailer_name –MailerName.method(@object).deliver in object controller