“Rails 生成性能测试”不可用？

Question

我目前正在尝试遵循Ruby on Rails 文档中给出的性能测试教程。但我在第一步就陷入了困境！

当我尝试运行下面给出的命令时，出现错误，

命令：

$ rails generate performance_test homepage

我得到的错误：

Could not find generator 'performance_test'. Maybe you meant 'integration_test', 'resource_route' or 'coffee:assets'

我跑去"rails generator --help"查看可以生成的可能文件，下面是我得到的输出，

Running via Spring preloader in process 9465
Expected string default value for '--jbuilder'; got true (boolean)
Usage: rails generate GENERATOR [args] [options]

General options:
  -h, [--help]     # Print generator's options and usage
  -p, [--pretend]  # Run but do not make any changes
  -f, [--force]    # Overwrite files that already exist
  -s, [--skip]     # Skip files that already exist
  -q, [--quiet]    # Suppress status output

Please choose a generator below.

Expected string default value for '--helper'; got true (boolean)
Expected string default value for '--assets'; got true (boolean)
Rails:
  assets
  channel
  controller
  generator
  helper
  integration_test
  jbuilder
  job
  mailer
  migration
  model
  resource
  responders_controller
  scaffold
  scaffold_controller
  task

Coffee:
  coffee:assets

Js:
  js:assets

RailsScript:
  rails_script:class
  rails_script:controller
  rails_script:element
  rails_script:install
  rails_script:utility

Responders:
  responders:install

Rspec:
  rspec:controller
  rspec:feature
  rspec:helper
  rspec:install
  rspec:integration
  rspec:job
  rspec:mailer
  rspec:model
  rspec:observer
  rspec:request
  rspec:scaffold
  rspec:view

SimpleCalendar:
  simple_calendar:views

TestUnit:
  test_unit:controller
  test_unit:generator
  test_unit:helper
  test_unit:integration
  test_unit:job
  test_unit:mailer
  test_unit:model
  test_unit:plugin
  test_unit:scaffold

如上所示，那里没有定义性能测试单元。RoR 5 中是否存在这种情况，或者我是否搞乱了项目，从而无法生成 Performance_test 文件？

Answer 1

Rails 4 取消了 Performance_test 的默认设置。您可以在您提供的 Rails 文档链接中看到，它适用于 Rails 3.2.x

来自https://github.com/rails/rails-perftest

从 Rails 4 开始，性能测试不再是默认堆栈的一部分。

在他们的 github 页面上有将其添加回来的说明，这里是相关的 gem。

gem 'rails-perftest'
gem 'ruby-prof'