assert_emails

assert_emails(number)

Instance Public methods

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

def test_emails
  assert_emails 0
  ContactMailer.welcome.deliver
  assert_emails 1
  ContactMailer.welcome.deliver
  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
  end
 
  assert_emails 2 do
    ContactMailer.welcome.deliver
    ContactMailer.welcome.deliver
  end
end

Links:

https://github.com/rails/rails/blob/db4af113048b5890177c1ac136f0ae7d1c066375/actionmailer/lib/action_mailer/test_helper.rb#L26

doc_ruby_on_rails

2025-01-10 15:47:30

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