如何从 RSpec 获取当前测试文件名? [英] How to get the current test filename from RSpec?

问题描述

我正在尝试加快大型 RSpec 项目的测试速度.除了使用 RSpec 的 --profile 选项之外，我还想打印出运行时间最长的测试文件 [1].

I'm trying to speed up a large RSpec project's tests. In addition to using RSpec's --profile option I wanted to get the longest running test files [1] printed out.

在我的 spec_helper.rb 中，我将正在测试的类和总时间转储到一个文件中，但是因为我们有 spec/model 和 spec/request 目录我真的希望能够打印当前测试的 filename 而不仅仅是类名 (written_class)，以便用户可以消除 code>model/foo_spec.rb 和 request/foo_spec.rb 优化时.

In my spec_helper.rb I dump the classes being tested and total time to a file, however as we have spec/model and spec/request directories I'd really like to be able to print the current test's filename and not just the class name (described_class), so that the user can disambiguate between model/foo_spec.rb and request/foo_spec.rb when optimizing.

在 spec/spec_helper.rb 的 before 块中，如何获取当前测试文件的文件名?

In a before block in the spec/spec_helper.rb, how can I get the current test file's filename?

我的(经过大量修剪的)spec_helper 看起来像这样:

My (heavily trimmed) spec_helper looks like this:

config.before :all do
  @start_time = Time.now
end

config.after :all do |test|
  timings.push({ :name => test.described_class,
                 :file => 'I do not know how to get this',
                 :duration_in_seconds => (Time.now - @start_time) })
end

config.after :suite do
  timing_logfile_name = 'log/rspec_file_times.log'
  timing_logfile = "#{File.dirname(__FILE__)}/../#{timing_logfile_name}"
  file = File.open(timing_logfile, 'w')
  timings.sort_by{ |timing| timing[:duration_in_seconds].to_f }.reverse!.each do |timing|
    file.write( sprintf("%-25.25s    % 9.3f seconds\n",
                        timing[:name], timing[:duration_in_seconds]) )
  end
  file.close
  tell_if_verbose("Overall test times are logged in '#{timing_logfile_name}'")
end

这在当前的 RSpec 元数据中似乎不可用，但我希望更熟悉内部结构的人可以想出一种方法来公开它.谢谢，戴夫

This doesn't seem to be available in the curretn RSpec meta-data, but I'm hoping someone more familiar with the internals can think of a way to expose it. Thanks, Dave

[1] 通常，包含 100 个示例的文件比 --profile 中的单个示例产生的速度更快 - 当该大文件的 before :each/before :所有块都是有针对性的，显然即使是保存的毫秒数也会乘以文件中的测试数.除了 --profile 之外，使用这种技术对我帮助很大.

[1] Often a file with, say, 100 examples in it yields more speed up than a single example from --profile - when that large file's before :each / before :all blocks are targetted, obviously even a ms saved is multiplied up by the number of tests in the file. Using this technique in addition to --profile helped me a lot.

推荐答案

只要你只是用它来分析你的测试以确定哪些文件需要改进，你应该能够将它扔到你的 spec_helper.rb 文件(然后将其删除).我完全理解这在生产环境中并不漂亮/干净/优雅/可接受，我否认我曾经写过它:)

As long as you're just using this for profiling your tests to identify which files need to be improved, you should be able to toss this into your spec_helper.rb file (and remove it afterwards). I fully understand that this is not pretty/clean/elegant/acceptible in production environments and I disavow that I ever wrote it :)

config.before(:each) do |example|
  path = example.metadata[:example_group][:file_path]
  curr_path = config.instance_variable_get(:@curr_file_path)
  if (curr_path.nil? || path != curr_path)
    config.instance_variable_set(:@curr_file_path, path)
    puts path
  end
end

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