Issue #7556 has been reported by usa (Usaku NAKAMURA).

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Bug #7556: test error on refinement
https://bugs.ruby-lang.org/issues/7556

Author: usa (Usaku NAKAMURA)
Status: Assigned
Priority: Normal
Assignee: shugo (Shugo Maeda)
Category: ext
Target version: 2.0.0
ruby -v: ruby -v: ruby 2.0.0dev (2012-12-13 trunk 38354) [x64-mswin64_100]


  1) Error:
test_refine_recursion(TestRefinement):
NoMethodError: undefined method `recursive_length' for "oo":String
    C:/Users/usa/ruby/test/ruby/test_refinement.rb:567:in `recursive_length'
    <main>:in `<main>'
    C:/Users/usa/ruby/test/ruby/test_refinement.rb:806:in `eval'
    C:/Users/usa/ruby/test/ruby/test_refinement.rb:806:in `eval_using'
    C:/Users/usa/ruby/test/ruby/test_refinement.rb:574:in `test_refine_recursion'


On my box this error is 100% reproducible, but I also know that RubyCI and
RubyInstaller CI don't report this error.
I've heard that nobu reproduced this bug on x86_64-dawrin, but I don't know
the detail of his environment.

# Once I wrote the detail of my debuggin, but it is lost by accidenal reboot
# of my PC.
# I have no energy to rewrite it, because writing long English sentences
# irritates me, especially after seeing mails which reproach our native
# language.


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