Assertions

assert.rb

module Assert
  class AssertionError < StandardError
  end

  def self.expect(value)
    raise 'No block with error message given to Assert.expect' unless block_given?

    # In tests make sure that the assertion parameters are correct. This is a
    # bit slower, but prevents errors in assertions.
    return if value && !Rails.env.test?

    error_data = yield

    case error_data
    when String
      message = error_data
      extra = {}
    when Hash
      message = error_data.fetch(:message)
      extra = error_data.dup
      extra.delete(:message)
    else
      raise 'Assert.expect block may only return a String or Hash'
    end

    return if value # Again, for in tests.

    if Rails.env.development? || Rails.env.test?
      message += " | extra: #{extra.inspect}" unless extra.empty?
      raise AssertionError, message
    else
      # Prevent spamming Sentry many times from the same request.
      RequestStore.store[:assert_expect_messages_sent] ||= {}
      if RequestStore.store[:assert_expect_messages_sent][message].nil?
        RequestStore.store[:assert_expect_messages_sent][message] = true

        Raven.capture_message(message, extra: extra, level: 'warning')
      end
    end
  end
end