ruby-on-rails - Rspec极慢

Question

我的rspec测试似乎在使用 guard 队和spork的情况下运行极其缓慢。

Finished in 5.36 seconds
13 examples, 2 failures

我知道可以做一些事情来优化测试并减少与数据库的交互，但是我强烈怀疑spec_helper的设置不正确。我在与3.2版的Mongoid混在一起。每次运行后，数据库清理器都会清理一次。

spec_helper.rb

require 'rubygems'
require 'spork'
Spork.prefork do
  ENV["RAILS_ENV"] ||= 'test'
  require File.expand_path("../../config/environment", __FILE__)
  require 'rspec/rails'
  require 'rspec/autorun'
  require 'capybara/rspec'

  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
  DatabaseCleaner[:mongoid].strategy = :truncation

  RSpec.configure do |config|
    config.infer_base_class_for_anonymous_controllers = false
    config.order = "random"
    config.filter_run focus: true
    config.filter_run_excluding :remove => true
    config.run_all_when_everything_filtered = true
    config.include Mongoid::Matchers
    config.include Capybara::DSL
    ActiveSupport::Dependencies.clear
  end
end


Spork.each_run do
  Fabrication.clear_definitions
  RSpec.configure do |config|
    config.before(:each) do
      DatabaseCleaner.clean
    end
  end
end

更新:问题出在我的一项测试中。这花了3秒钟。请检查@Sam Peacey的答案以获取我用来获得以下结果的命令

Dynamic Model should destroy collection when related source is destroyed
    2.46 seconds ./spec/models/dynamic_model_spec.rb:10
Dynamic Model Validations should validate uniqueness
    0.66357 seconds ./spec/models/dynamic_model_spec.rb:69

Answer 1

您可以通过运行带有-p/--profile标志的rspec来配置您的规范:

rspec spec -p [-drb, and whatever else]

这将列出10个最慢的示例及其执行时间。您可以通过为-p标志提供可选计数来更改默认值10。通过使用rspec --help获得更多信息