Database cleaner removes data when it shouldn't

Question

Has anyone ran into problem like that?

I have a controller, which triggers mailer delivery:

  def create
    create! do |success, failure|
      success.js do
        CandidateMailer.donation_notification(current_candidate).deliver
      end
    end
  end

And I got that mailer:

  def donation_notification(candidate)
    puts Candidate.count  # note: during test - count of candidates is 0
    @candidate = candidate
    email_with_name = "#{@candidate.profile.name} <#{@candidate.email}>"
    mail(to: email_with_name, subject: 'New Donation Received!')
  end

I don't understand why database cleaner removes all data before test is actually finished.

It's a JS test (with Webkit) if that matters at all.

Here's my config:

RSpec.configure do |config|

  config.before(:suite) do
    DatabaseCleaner.clean_with :truncation
  end

  config.before(:each) do
    if Capybara.current_driver == :rack_test
      DatabaseCleaner.strategy = :transaction
    else
      DatabaseCleaner.strategy = [:truncation, { pre_count: true }]
    end

    DatabaseCleaner.start
  end

  config.after(:each) do
    DatabaseCleaner.clean
  end
end

Answer 1

If I understand correctly from the code, both clean and clean_with actually delegate to strategy.clean, which means they both actively clean.

When you call

  config.before(:suite) do
    DatabaseCleaner.clean_with :truncation
  end

It cleans your database before the tests begin.

In a test situation, this might be OK, if you seed your test data at the beginning of the suite (or before each test).