ruby-on-rails - Windows 上的 Rails 测试错误 "UNIXServer is required (LoadError)"

Question

尝试在 Windows 上执行“rails 测试”时遇到问题。

问题:

 17: from test/controllers/users_controller_test.rb:1:in `<main>'
        16: from C:/Ruby25-x64/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        15: from C:/Ruby25-x64/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        14: from C:/Users/ES0074223/RubyOnRails/firefly/test/test_helper.rb:5:in `<top (required)>'
        13: from C:/Users/ES0074223/RubyOnRails/firefly/test/test_helper.rb:6:in `<class:TestCase>'
        12: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/test_case.rb:82:in `parallelize'
        11: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/test_case.rb:82:in `new'
        10: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/testing/parallelization.rb:54:in `initialize'
         9: from C:/Ruby25-x64/lib/ruby/2.5.0/drb/drb.rb:1710:in `start_service'
         8: from C:/Ruby25-x64/lib/ruby/2.5.0/drb/drb.rb:1710:in `new'
         7: from C:/Ruby25-x64/lib/ruby/2.5.0/drb/drb.rb:1404:in `initialize'
         6: from C:/Ruby25-x64/lib/ruby/2.5.0/drb/drb.rb:772:in `open_server'
         5: from C:/Ruby25-x64/lib/ruby/2.5.0/drb/drb.rb:804:in `auto_load'
         4: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/dependencies.rb:297:in `require'
         3: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/dependencies.rb:263:in `load_dependency'
         2: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/dependencies.rb:297:in `block in require'
         1: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/activesupport-6.0.0.beta1/lib/active_support/dependencies.rb:297:in `require'
C:/Ruby25-x64/lib/ruby/2.5.0/drb/unix.rb:6:in `<top (required)>': UNIXServer is required (LoadError)

任何帮助深表感谢。

Answer 1

可能与Rails Issue #34410 Windows support for parallelization and instrumenter有关

问题今天仍然存在(2019 年 11 月下旬)

$ rails test
Traceback (most recent call last):
    28: from bin/rails:9:in `<main>'
    ...
     8: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.1/lib/active_support/testing/parallelization.rb:58:in `initialize'
     7: from C:/Ruby26-x64/lib/ruby/2.6.0/drb/drb.rb:1715:in `start_service'
     6: from C:/Ruby26-x64/lib/ruby/2.6.0/drb/drb.rb:1715:in `new'
     5: from C:/Ruby26-x64/lib/ruby/2.6.0/drb/drb.rb:1403:in `initialize'
     4: from C:/Ruby26-x64/lib/ruby/2.6.0/drb/drb.rb:772:in `open_server'
     3: from C:/Ruby26-x64/lib/ruby/2.6.0/drb/drb.rb:804:in `auto_load'
     2: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/zeitwerk-2.2.1/lib/zeitwerk/kernel.rb:23:in `require'
     1: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/zeitwerk-2.2.1/lib/zeitwerk/kernel.rb:23:in `require'
     C:/Ruby26-x64/lib/ruby/2.6.0/drb/unix.rb:6:in `<top (required)>': UNIXServer is required (LoadError)

错误消息的重要部分来自 测试/并行化.rb .

在 test/test_helper.rb 中:添加“带线程”:

parallelize(workers: :number_of_processors, with: :threads)

但这并不能解决问题。我也有
在 Gemfile 中将 sass-rails 升级到版本 6(我之前有 5 个):

gem 'sass-rails', '>= 6'

并进行捆绑更新。

为什么涉及 sass-rails 是一个谜。