Rspec极其缓慢

Question

我的rspec测试似乎运行速度非常慢,即使有防护和spork.

Finished in 5.36 seconds
13 examples, 2 failures

我知道我可以做几件事来优化我的测试并减少与数据库的交互,但我强烈怀疑spec_helper设置不正确.我在轨道3.2.11与mongoid.每次运行后数据库清理程序都会清理.

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:问题出在我的一个测试中.这需要3秒钟.请查看@Sam Peacey的答案,了解我用于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

您可以通过使用-p/ --profileflag 运行rspec来描述您的规范:

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.更多信息使用rspec --help