save_and_open_page和叉勺，叉勺是失去的测试套件/输出

Question

当我跑我的叉勺RSpec的测试，我每次使用水豚的save_and_open_page时间，叉勺是失去测试套件..也许犯规输出什么了......

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

不知怎的，你的STDOUT正在被一些其他缓冲区替换。因此，无论是由水豚写入标准输出都被忽略或消耗在其他地方。

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宝石。所以我相信STDOUT和STDERR在其中一个宝石中变得残存。

Answer 2

我在http://blog.mikecordell.com/2013/08/14/guard-and-capybara's-save_and_open_page.html找到了描述问题的真实解决方案。特别感谢此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