module RSpec::Rails::FeatureCheck

def can_check_pending_migrations?
  has_active_record_migration? &&
    ::ActiveRecord::Migration.respond_to?(:check_pending!)
end

def can_maintain_test_schema?
  has_active_record_migration? &&
    ::ActiveRecord::Migration.respond_to?(:maintain_test_schema!)
end

def has_1_9_hash_syntax?
  ::Rails::VERSION::STRING > '4.0'
end

def has_action_mailer?
  defined?(::ActionMailer)
end

def has_action_mailer_preview?
  has_action_mailer? && defined?(::ActionMailer::Preview)
end

def has_action_mailer_show_preview?
  has_action_mailer_preview? &&
    ::ActionMailer::Base.respond_to?(:show_previews=)
end

def has_active_job?
  defined?(::ActiveJob)
end

def has_active_record?
  defined?(::ActiveRecord)
end

def has_active_record_migration?
  has_active_record? && defined?(::ActiveRecord::Migration)
end

def has_file_fixture?
  ::Rails::VERSION::STRING > '5.0'
end

def type_metatag(type)
  if has_1_9_hash_syntax?
    "type: :#{type}"
  else
    ":type => :#{type}"
  end
end