Ruby 1.9.3在并行运行时不会运行任何单元测试

Question

当并行运行时，Ruby 1.9.3不会运行任何单元测试

给定以下代码，

# Modified from https://gist.github.com/1334056/121396125ca4dd7ee1bb81536cce0754700f20fb
# replication.rb
require 'test/unit'
class TestTest < Test::Unit::TestCase
  def test_one
    assert true
  end

  def test_two
    assert true
  end
end

单元测试在不并行运行时有效，但在并行运行时不起作用：

$ ruby1.9.1 replication.rb 
Run options: 

# Running tests:

..

Finished tests in 0.000348s, 5740.7094 tests/s, 5740.7094 assertions/s.

2 tests, 2 assertions, 0 failures, 0 errors, 0 skips

$ ruby1.9.1 replication.rb --jobs=2 --ruby /usr/bin/ruby1.9.1
Run options: --jobs=2 --ruby /usr/bin/ruby1.9.1

# Running tests:


Retrying...





Finished tests in 0.039012s, 0.0000 tests/s, 0.0000 assertions/s.

0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

以下是调试开关打开时发生的情况：

$ export RUBYOPT="-d"
$ ruby1.9.1 replication.rb 
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1243 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1252 - cannot load such file -- rubygems/defaults/ruby
Run options: 

# Running tests:

..

Finished tests in 0.000350s, 5718.3539 tests/s, 5718.3539 assertions/s.

2 tests, 2 assertions, 0 failures, 0 errors, 0 skips
$ ruby1.9.1 replication.rb --jobs=2 --ruby /usr/bin/ruby1.9.1
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1243 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1252 - cannot load such file -- rubygems/defaults/ruby
Run options: --jobs=2 --ruby /usr/bin/ruby1.9.1

# Running tests:

Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1243 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1252 - cannot load such file -- rubygems/defaults/ruby
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1243 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /usr/lib/ruby/1.9.1/rubygems.rb:1252 - cannot load such file -- rubygems/defaults/ruby
/usr/lib/ruby/1.9.1/test/unit/parallel.rb:149: warning: method redefined; discarding old on_parallel_worker?
/usr/lib/ruby/1.9.1/test/unit/testcase.rb:11: warning: previous definition of on_parallel_worker? was here
/usr/lib/ruby/1.9.1/test/unit/parallel.rb:149: warning: method redefined; discarding old on_parallel_worker?
/usr/lib/ruby/1.9.1/test/unit/testcase.rb:11: warning: previous definition of on_parallel_worker? was here
Exception `Errno::EPIPE' at /usr/lib/ruby/1.9.1/test/unit/parallel.rb:125 - Broken pipe - <STDOUT>
Exception `Errno::EPIPE' at /usr/lib/ruby/1.9.1/test/unit/parallel.rb:133 - Broken pipe - <STDOUT>

Retrying...





Finished tests in 0.033203s, 0.0000 tests/s, 0.0000 assertions/s.

0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

我也尝试过使用minitest，但是没有并行测试：

# mini_me.rb
# modified from http://apidock.com/ruby/MiniTest
require 'minitest/autorun'

class TestMeme < MiniTest::Unit::TestCase
  def test_one
    assert true
  end

  def test_two
    assert true
  end
end

给出

$ ruby1.9.1 mini_me.rb --help
minitest options:
    -h, --help                       Display this help.
    -s, --seed SEED                  Sets random seed
    -v, --verbose                    Verbose. Show progress processing files.
    -n, --name PATTERN               Filter test names on pattern.

这是Ruby和ubuntu的版本。

$ ruby1.9.1 --version
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

$ uname -a
Linux [redacted] 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

我还使用最近在OS X雪豹上提交的Ruby (ruby 2.0.0dev (2012-05-05主干35543) x86_64-darwin10.8.0)运行了第一个脚本，但它在那里不起作用。

我做错了什么？

当我有多个文件，但没有显式使用Test::Unit::Runner时，会发生以下情况

test1.rb

require "test/unit"

class Test1 < Test::Unit::TestCase
  def test_one
    assert true
  end
end

test2.rb

require "test/unit"

class Test2 < Test::Unit::TestCase
  def test_two
    assert true
  end
end

test_all.rb

require_relative "test1"
require_relative "test2"

尝试使用此方法：

$ ruby test_all.rb --basedir=. --jobs 2 --ruby /Users/agrimm/.rvm/rubies/ruby-head/bin/ruby
Run options: --basedir=. --jobs 2 --ruby /Users/agrimm/.rvm/rubies/ruby-head/bin/ruby

# Running tests:


Retrying...





Finished tests in 0.075256s, 0.0000 tests/s, 0.0000 assertions/s.

0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

ruby -v: ruby 2.0.0dev (2012-05-05 trunk 35543) [x86_64-darwin10.8.0]

Answer 1

我是test/unit的维护者sora_h。

test/unit对每个测试文件进行并行化。

你需要把测试文件和TestCase分开才能并行化。

很抱歉给您带来不便，但我们不能为每个test_*方法并行化，因为有些test_*方法不能单独运行。(需要订购)

您可以使用Test::Unit::Runner运行多个文件。

谢谢。