save_and_open_page和spork，spork正在失去测试套件/输出

Question

当我用spork运行我的rspec测试时，每次我使用水豚的save_and_open_page，spork都会丢失测试套件。或者可能不再输出任何内容...

查看日志

# => without save_and_open_page
09:04:24 - INFO - Spork server for RSpec, Test::Unit successfully started

09:04:24 - INFO - Guard::RSpec is running
09:04:24 - INFO - Running all specs
Running tests with args ["--drb", "-f", "progress", "-r", "/Users/myuser/.rvm/gems/ruby-1.9.3-p392/gems/guard-rspec-2.5.2/lib/guard/rspec/formatter.rb", "-f", "Guard::RSpec::Formatter", "--failure-exit-code", "2", "spec"]...
................

Finished in 4.1 seconds
16 examples, 0 failures


Randomized with seed 50331

Done.

# => with save_and_open_page, no .... are shown anymore
09:04:29 - INFO - Guard is now watching at '/Users/myuser/coding/myproject'
09:04:39 - INFO - Running: spec/features/registration/registration_process_spec.rb
Running tests with args ["--drb", "-f", "progress", "-r", "/Users/myuser/.rvm/gems/ruby-1.9.3-p392/gems/guard-rspec-2.5.2/lib/guard/rspec/formatter.rb", "-f", "Guard::RSpec::Formatter", "--failure-exit-code", "2", "spec/features/registration/registration_process_spec.rb"]...
Done.

# => without save_and_open_page, also no .... anymore (after restart it works again)
[1] guard(main)> Running tests with args ["--drb", "-f", "progress", "-r", "/Users/myuser/.rvm/gems/ruby-1.9.3-p392/gems/guard-rspec-2.5.2/lib/guard/rspec/formatter.rb", "-f", "Guard::RSpec::Formatter", "--failure-exit-code", "2", "spec/features/registration/registration_process_spec.rb"]...
Done.

    # => here i added some errors into my code... still no error message shown...
[1] guard(main)> Running tests with args ["--drb", "-f", "progress", "-r", "/Users/myuser/.rvm/gems/ruby-1.9.3-p392/gems/guard-rspec-2.5.2/lib/guard/rspec/formatter.rb", "-f", "Guard::RSpec::Formatter", "--failure-exit-code", "2", "spec/features/registration/registration_process_spec.rb"]...
Done.

# only works again after restarting spork

有什么建议吗？

Answer 1

我在http://blog.mikecordell.com/2013/08/14/guard-and-capybara's-save_and_open_page.html找到了所描述问题的真正解决方案。特别感谢本解决方案的实际作者。

只需添加：

RSpec.configure do |config|
  config.before(:each) do
    @old_stdout, @old_stderr = STDOUT, STDERR
  end

  config.after(:each) do
    $stdout, $stderr = @old_stdout, @old_stderr
  end
end

到spec_helper.rb

Answer 2

不知怎么的，你的STDOUT被其他的缓冲区替换了。因此，无论Capybara写给STDOUT的是什么，都会被忽略或在其他地方使用。

尝试以下操作：

# Add global before/after blocks
before :each do
  @old_stdout, @old_stderr = STDOUT, STDERR
end

after :each do
  STDOUT,  STDERR  = @old_stdout, @old_stderr

  # Some gems use $stdout and $stderr, instead of STDOUT and STDERR, replace those too
  $stdout, $stderr = @old_stdout, @old_stderr
end

水豚的save_and_open_page使用Launchy gem。因此，我认为STDOUT和STDERR在这些宝石中被卡住了。