module RSpec::Rails

def self.initialize_configuration(config)

Other tags:
    Private: -
def self.initialize_configuration(config)
  config.backtrace_exclusion_patterns << /vendor\//
  config.backtrace_exclusion_patterns << %r{lib/rspec/rails}
  # controller settings
  config.add_setting :infer_base_class_for_anonymous_controllers, :default => true
  # fixture support
  config.add_setting :use_transactional_fixtures, :alias_with => :use_transactional_examples
  config.add_setting :use_instantiated_fixtures
  config.add_setting :global_fixtures
  config.add_setting :fixture_path
  config.include RSpec::Rails::FixtureSupport, :use_fixtures
  # We'll need to create a deprecated module in order to properly report to
  # gems / projects which are relying on this being loaded globally.
  #
  # See rspec/rspec-rails#1355 for history
  #
  # @deprecated Include `RSpec::Rails::RailsExampleGroup` or
  #   `RSpec::Rails::FixtureSupport` directly instead
  config.include RSpec::Rails::FixtureSupport
  if ::Rails::VERSION::STRING > '5'
    config.add_setting :file_fixture_path, :default => 'spec/fixtures/files'
    config.include RSpec::Rails::FileFixtureSupport
  end
  # Add support for fixture_path on fixture_file_upload
  config.include RSpec::Rails::FixtureFileUploadSupport
  # This allows us to expose `render_views` as a config option even though it
  # breaks the convention of other options by using `render_views` as a
  # command (i.e. `render_views = true`), where it would normally be used
  # as a getter. This makes it easier for rspec-rails users because we use
  # `render_views` directly in example groups, so this aligns the two APIs,
  # but requires this workaround:
  config.add_setting :rendering_views, :default => false
  config.instance_exec do
    def render_views=(val)
      self.rendering_views = val
    end
    def render_views
      self.rendering_views = true
    end
    def render_views?
      rendering_views
    end
    def infer_spec_type_from_file_location!
      DIRECTORY_MAPPINGS.each do |type, dir_parts|
        escaped_path = Regexp.compile(dir_parts.join('[\\\/]') + '[\\\/]')
        define_derived_metadata(:file_path => escaped_path) do |metadata|
          metadata[:type] ||= type
        end
      end
    end
    # Adds exclusion filters for gems included with Rails
    def filter_rails_from_backtrace!
      filter_gems_from_backtrace "actionmailer", "actionpack", "actionview"
      filter_gems_from_backtrace "activemodel", "activerecord",
                                 "activesupport", "activejob"
    end
  end
  add_test_type_configurations(config)
  if defined?(::Rails::Controller::Testing)
    [:controller, :view, :request].each do |type|
      config.include ::Rails::Controller::Testing::TestProcess, :type => type
      config.include ::Rails::Controller::Testing::TemplateAssertions, :type => type
      config.include ::Rails::Controller::Testing::Integration, :type => type
    end
  end
  if defined?(ActionMailer)
    config.include RSpec::Rails::MailerExampleGroup, :type => :mailer
  end
  if defined?(ActiveJob)
    config.include RSpec::Rails::JobExampleGroup, :type => :job
  end
end