Module: ActionMailer::TestHelper

Extended by:

ActiveSupport::Concern

Defined in:

actionmailer/lib/action_mailer/test_helper.rb

Instance Method Summary (collapse)

• - (Object) assert_emails(number)

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

• - (Object) assert_no_emails(&block)

  Assert that no emails have been sent.

Methods included from ActiveSupport::Concern

append_features, extended, included

  def test_emails
    assert_emails 0
    ContactMailer.deliver_contact
    assert_emails 1
    ContactMailer.deliver_contact
    assert_emails 2
  end

  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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# File 'actionmailer/lib/action_mailer/test_helper.rb', line 27

def assert_emails(number)
  if block_given?
    original_count = ActionMailer::Base.deliveries.size
    yield
    new_count = ActionMailer::Base.deliveries.size
    assert_equal original_count + number, new_count, "#{number} emails expected, but #{new_count - original_count} were sent"
  else
    assert_equal number, ActionMailer::Base.deliveries.size
  end
end

  def test_emails
    assert_no_emails
    ContactMailer.deliver_contact
    assert_emails 1
  end

  def test_emails_again
    assert_no_emails do
      # No emails should be sent from this block
    end
  end

  assert_emails 0

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# File 'actionmailer/lib/action_mailer/test_helper.rb', line 57

def assert_no_emails(&block)
  assert_emails 0, &block
end