SimpleCov报告在使用Spork运行RSpec测试后没有在Rails 3应用程序中生成

Question

我刚刚安装了SimpleCov gem以在我的Rails 3.2.6应用程序上生成代码覆盖率报告,它与RSpec一起工作很好,而不是Spork.我可以通过运行获得所需的正确报告rspec --no-drb spec/,但我也想让它们使用Spork运行rspec spec/.

鉴于有人在这方面取得了成功,我的设置似乎有误.我已经阅读了设置说明以及声称为Spork用户修复的GitHub问题,但仍然没有运气.我想知道是否有人可以提供他们可以用作参考的工作规范/ spec_helper.rb文件的完整示例,因为广泛的谷歌搜索只发现了片段.根据其他网站的建议,我尝试将config.cache_classesin config/environments/test.rb从默认值更改true为falseto !(ENV['DRB'] == 'true'),没有运气.

作为参考,这是我的设置方式:

的Gemfile

group :development, :test do
  # ...
  gem 'rspec-rails', '2.10.1'
end

group :test do
  # ...
  gem 'spork', '0.9.0'
  gem 'simplecov', '0.6.4', require: false
end

的.spec

--colour
--drb

spec/spec_helper.rb(根据GitHub问题更改)

require 'simplecov'
SimpleCov.start 'rails'

require 'rubygems'
require 'spork'

Spork.prefork do
  unless ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
  end

  ENV["RAILS_ENV"] ||= 'test'
  require File.expand_path("../../config/environment", __FILE__)
  require 'rspec/rails'
  require 'rspec/autorun'

  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

  RSpec.configure do |config|
    config.mock_with :rspec
    config.fixture_path = "#{::Rails.root}/spec/fixtures"
    config.use_transactional_fixtures = true
    config.infer_base_class_for_anonymous_controllers = false
  end
end

Spork.each_run do
  if ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
  end
end

我已经尝试注释/更改SimpleCov此文件的前两个语句和Spork块内的Simplecov语句,但似乎无法找到有效的组合.

我错过了什么？我需要更改其他文件吗？

Answer 1

我设法得到一个正常工作的spec/spec_helper.rb配置,只需使用该$ rspec spec/命令就可以正确执行SimpleCov,这要归功于Github问题的评论,该问题将我发送到此博客条目,其示例spec/spec_helper.rb.所有的原因,为什么这个作品中包含的(非常详细!)博客条目.替换SampleApp为您的应用程序的名称.

投机/ spec_helper.rb

require 'rubygems'
require 'spork'

Spork.prefork do
  unless ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
  end

  require 'rails/application'
  require Rails.root.join("config/application")

  ENV["RAILS_ENV"] ||= 'test'
  require 'rspec/rails'
  require 'rspec/autorun'

  RSpec.configure do |config|
    config.mock_with :rspec
    config.fixture_path = "#{::Rails.root}/spec/fixtures"
    config.use_transactional_fixtures = false

    config.before :each do
      if Capybara.current_driver == :rack_test
        DatabaseCleaner.strategy = :transaction
      else
        DatabaseCleaner.strategy = :truncation
      end
      DatabaseCleaner.start
    end

    config.after do
      DatabaseCleaner.clean
    end

    config.infer_base_class_for_anonymous_controllers = false
  end
end

Spork.each_run do
  if ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
    SampleApp::Application.initialize!
    class SampleApp::Application
      def initialize!; end
    end
  end

  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
end

编辑

如果您使用Travis-CI,请不要按原样使用此代码,因为您可能会收到undefined method 'root' for Rails:Module (NoMethodError)错误.如果你知道如何解决这个问题,请分享.

编辑2

我让Travis CI基本上把所有东西放在了Spork.each_run块中,这似乎显着减慢了测试速度.必须有一个更好的方法来做到这一点,或者它似乎不值得为了不必运行$ rspec --no-drb spec/一次来获得SimpleCov报告...

投机/ spec_helper.rb

require 'rubygems'
require 'spork'

Spork.prefork do
  unless ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
  end

  require 'rails/application'
  ENV["RAILS_ENV"] ||= 'test'
end

Spork.each_run do
  if ENV['DRB']
    require 'simplecov'
    SimpleCov.start 'rails'
    require Rails.root.join("config/application")
    SampleApp::Application.initialize!
    class SampleApp::Application
      def initialize!; end
    end
  end

  unless ENV['DRB']
    require File.expand_path("../../config/environment", __FILE__)
  end

  require 'rspec/rails'
  require 'rspec/autorun'

  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

  RSpec.configure do |config|
    config.mock_with :rspec

    config.fixture_path = "#{::Rails.root}/spec/fixtures"
    config.use_transactional_fixtures = false
    config.before :each do
      if Capybara.current_driver == :rack_test
        DatabaseCleaner.strategy = :transaction
      else
        DatabaseCleaner.strategy = :truncation
      end
      DatabaseCleaner.start
    end

    config.after do
      DatabaseCleaner.clean
    end
    config.infer_base_class_for_anonymous_controllers = false
  end
end

编辑3

在使用这个配置几天之后,它似乎没有像我之前想象的那样减慢速度,所以我会认为这是接受的答案,除非发布更优雅的答案.

编辑4

使用这个配置了几个月之后,我认识到,这是比我想象的要慢.其中一部分是认识到Spork似乎可以减慢测试套件,并且最好是快速迭代聚焦测试,而不是总是运行整个测试套件.下面的SO问题和博客文章让我看到下面的spec_helper.rb文件,该文件可以运行带有或不带Spork的SimpleCov,运行速度比之前更快,并且与Capybara 2.0一起使用.

• 使用spork的Rails项目 - 总是要使用spork？
• 如何使用perftools和bundler来分析RSpec？
• Spork.trap_method Jujitsu
• 当Spork在您的黄瓜和扳手中放入叉子时
• 恶作剧您的规格
• 分析Spork可缩短启动时间
• Sane RSpec配置干净,速度稍快的规格

投机/ spec_helper.rb

require 'rubygems'
require 'spork'
require 'simplecov'
#uncomment the following line to use spork with the debugger
#require 'spork/ext/ruby-debug'

Spork.prefork do
  ENV["RAILS_ENV"] ||= 'test'
  unless ENV['DRB']
    SimpleCov.start 'rails'
    require File.expand_path("../../config/environment", __FILE__)
  end

  require 'rspec/rails'
  require 'rspec/autorun'
  require 'capybara/rails'
  require 'capybara/rspec'

  # files to preload based on results of Kernel override code below
  # ie they took more than 100 ms to load
  require "sprockets"
  require "sprockets/eco_template"
  require "sprockets/base"
  require "active_record/connection_adapters/postgresql_adapter"
  require "tzinfo"
  require "tilt"
  require "journey"
  require "journey/router"
  require "haml/template"

  RSpec.configure do |config|
    config.mock_with :rspec

    # If you're not using ActiveRecord, or you'd prefer not to run each of your
    # examples within a transaction, remove the following line or assign false
    # instead of true.
    config.use_transactional_fixtures = false

    # If true, the base class of anonymous controllers will be inferred
    # automatically. This will be the default behavior in future versions of
    # rspec-rails.
    config.infer_base_class_for_anonymous_controllers = false

    config.include FactoryGirl::Syntax::Methods

    config.before :suite do
      # PerfTools::CpuProfiler.start("/tmp/rspec_profile")
      DatabaseCleaner.strategy = :transaction
      DatabaseCleaner.clean_with(:truncation)
    end

    # Request specs cannot use a transaction because Capybara runs in a
    # separate thread with a different database connection.
    config.before type: :request do
      DatabaseCleaner.strategy = :truncation
    end

    # Reset so other non-request specs don't have to deal with slow truncation.
    config.after type: :request  do
      DatabaseCleaner.strategy = :transaction
    end

    RESERVED_IVARS = %w(@loaded_fixtures)
    last_gc_run = Time.now

    config.before(:each) do
      GC.disable
    end

    config.before do
      DatabaseCleaner.start
    end

    config.after do
      DatabaseCleaner.clean
    end

    # Release instance variables and trigger garbage collection
    # manually every second to make tests faster
    # http://blog.carbonfive.com/2011/02/02/crank-your-specs/
    config.after(:each) do
      (instance_variables - RESERVED_IVARS).each do |ivar|
        instance_variable_set(ivar, nil)
      end
      if Time.now - last_gc_run > 1.0
        GC.enable
        GC.start
        last_gc_run = Time.now
      end
    end

    config.after :suite do
      # PerfTools::CpuProfiler.stop

      # REPL to query ObjectSpace
      # http://blog.carbonfive.com/2011/02/02/crank-your-specs/
      # while true
      #   '> '.display
      #   begin
      #     puts eval($stdin.gets)
      #   rescue Exception => e
      #     puts e.message
      #   end
      # end
    end
  end

  # Find files to put into preload
  # http://www.opinionatedprogrammer.com/2011/02/profiling-spork-for-faster-start-up-time/
  # module Kernel
  #   def require_with_trace(*args)
  #     start = Time.now.to_f
  #     @indent ||= 0
  #     @indent += 2
  #     require_without_trace(*args)
  #     @indent -= 2
  #     Kernel::puts "#{' '*@indent}#{((Time.now.to_f - start)*1000).to_i} #{args[0]}"
  #   end
  #   alias_method_chain :require, :trace
  # end
end

Spork.each_run do
  # This code will be run each time you run your specs.
  if ENV['DRB']
    SimpleCov.start 'rails'
    SampleApp::Application.initialize!
    class SampleApp::Application
      def initialize!; end
    end
  end

  # Requires supporting ruby files with custom matchers and macros, etc,
  # in spec/support/ and its subdirectories.
  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
  FactoryGirl.reload
  I18n.backend.reload!
end