assert_emails(number) public

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

  def test_emails
    assert_emails 0
    ContactMailer.deliver_contact
    assert_emails 1
    ContactMailer.deliver_contact
    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.deliver_contact
    end

    assert_emails 2 do
      ContactMailer.deliver_contact
      ContactMailer.deliver_contact
    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