Question

我第二次做Rails教程。当我进入这个

rails generate integration_test static_pages

我得到spec/rails_helper.rb和spec/spec_helper.rb而非spec/spec_helper.rb

现在，当我运行我的测试时，它们比我上次这样做时更长（更“冗长”）并且更慢。我想知道两个文件之间有什么区别，如果我做错了什么。另外，有没有办法摆脱rails_helper.rb文件而不搞乱一切？

Answer 1

rspec-rails 3会生成spec_helper.rb和rails_helper.rb。 spec_helper.rb用于不依赖于Rails的规范（例如lib目录中的类的规范）。 rails_helper.rb用于依赖于Rails的规范（在Rails项目中，大部分或全部）。 rails_helper.rb需要spec_helper.rb。所以不，不要摆脱rails_helper.rb;在你的规范中要求它（而不是spec_helper.rb）。

如果您希望非依赖于Rails的规范强制执行它们非依赖于Rails，并且在您自己运行它们时尽可能快地运行，则可能需要spec_helper.rb而不是rails_helper.rb {1}}。但是-r rails_helper中的.rspec非常方便，而不是在每个规范文件中要求一个帮助者或另一个帮助者，所以这肯定是一种流行的方法。

如果您正在使用弹簧预加载器，则每个类只需要加载一次，spring loads classes eagerly even if you only run a single spec that requires spec_helper，因此在某些文件中仅要求spec_helper没有多少价值。

来源：https://www.relishapp.com/rspec/rspec-rails/docs/upgrade#default-helper-files

Answer 2

您始终可以将所有配置组合到spec_helper中，只需要int rails helper文件中的spec helper。

这绝不是“理想的”，因为在一天结束时，您是手动执行此“重构”的，但是如果它真的困扰您的话。只知道这完全取决于您如何构造Rspec.configure

#rails_helper.rb

require 'spec_helper'

#EMPTY FILE

并在其中引入所有特定于Rails的设置

# spec_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'

require File.expand_path('../config/environment', __dir__)

# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside
# of increasing the boot-up time by auto-requiring all files in the support
# directory. Alternatively, in the individual `*_spec.rb` files, manually
# require only the support files necessary.
#
# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }

# Checks for pending migrations and applies them before tests are run.
# If you are not using ActiveRecord, you can remove these lines.
begin
  ActiveRecord::Migration.maintain_test_schema!
rescue ActiveRecord::PendingMigrationError => e
  puts e.to_s.strip
  exit 1
end
RSpec.configure do |config|

... all our config.whatever_your_heart_desires

spec / rails_helper.rb与spec / spec_helper.rb的不同之处是什么？我需要它吗？

2 个答案: