method

assert_emails

v7.2.3 - Show latest stable - Class: ActionMailer::TestHelper

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

# File actionmailer/lib/action_mailer/test_helper.rb, line 35
    def assert_emails(number, &block)
      if block_given?
        diff = capture_emails(&block).length
        assert_equal number, diff, "#{number} emails expected, but #{diff} were sent"
      else
        assert_equal number, ActionMailer::Base.deliveries.size
      end
    end

1Note

Asserting Emails

thewinner · May 6, 2011

--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

assert_emails

1Note

Asserting Emails

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